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chromium / chromium / src / c9f6b3de9 / . / gpu / command_buffer / service / program_manager.cc
blob: 754d5b0630b16d7d450787076dbbfbfd6b3fb257 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/command_buffer/service/program_manager.h"
#include <stddef.h>
#include <stdint.h>
#include <algorithm>
#include <memory>
#include <set>
#include <utility>
#include <vector>
#include "base/command_line.h"
#include "base/containers/hash_tables.h"
#include "base/logging.h"
#include "base/metrics/histogram_macros.h"
#include "base/numerics/safe_math.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/time/time.h"
#include "gpu/command_buffer/common/gles2_cmd_format.h"
#include "gpu/command_buffer/common/gles2_cmd_utils.h"
#include "gpu/command_buffer/service/feature_info.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gpu_preferences.h"
#include "gpu/command_buffer/service/program_cache.h"
#include "gpu/command_buffer/service/shader_manager.h"
#include "third_party/re2/src/re2/re2.h"
#include "ui/gl/gl_version_info.h"
using base::TimeDelta;
using base::TimeTicks;
namespace gpu {
namespace gles2 {
namespace {
int ShaderTypeToIndex(GLenum shader_type) {
switch (shader_type) {
case GL_VERTEX_SHADER:
return 0;
case GL_FRAGMENT_SHADER:
return 1;
default:
NOTREACHED();
return 0;
}
}
// Given a name like "foo.bar[123].moo[456]" sets new_name to "foo.bar[123].moo"
// and sets element_index to 456. returns false if element expression was not a
// whole decimal number. For example: "foo[1b2]"
bool GetUniformNameSansElement(
const std::string& name, int* element_index, std::string* new_name) {
DCHECK(element_index);
DCHECK(new_name);
if (name.size() < 3 || name.back() != ']') {
*element_index = 0;
*new_name = name;
return true;
}
// Look for an array specification.
size_t open_pos = name.find_last_of('[');
if (open_pos == std::string::npos ||
open_pos >= name.size() - 2) {
return false;
}
base::CheckedNumeric<GLint> index = 0;
size_t last = name.size() - 1;
for (size_t pos = open_pos + 1; pos < last; ++pos) {
int8_t digit = name[pos] - '0';
if (digit < 0 || digit > 9) {
return false;
}
index = index * 10 + digit;
}
if (!index.IsValid()) {
return false;
}
*element_index = index.ValueOrDie();
*new_name = name.substr(0, open_pos);
return true;
}
bool IsBuiltInFragmentVarying(const std::string& name) {
// Built-in variables for fragment shaders.
const char* kBuiltInVaryings[] = {
"gl_FragCoord",
"gl_FrontFacing",
"gl_PointCoord"
};
for (size_t ii = 0; ii < arraysize(kBuiltInVaryings); ++ii) {
if (name == kBuiltInVaryings[ii])
return true;
}
return false;
}
bool IsBuiltInInvariant(
const VaryingMap& varyings, const std::string& name) {
VaryingMap::const_iterator hit = varyings.find(name);
if (hit == varyings.end())
return false;
return hit->second.isInvariant;
}
uint32_t ComputeOffset(const void* start, const void* position) {
return static_cast<const uint8_t*>(position) -
static_cast<const uint8_t*>(start);
}
ShaderVariableBaseType InputOutputTypeToBaseType(bool is_input, GLenum type) {
switch (type) {
case GL_INT:
case GL_INT_VEC2:
case GL_INT_VEC3:
case GL_INT_VEC4:
return SHADER_VARIABLE_INT;
case GL_UNSIGNED_INT:
case GL_UNSIGNED_INT_VEC2:
case GL_UNSIGNED_INT_VEC3:
case GL_UNSIGNED_INT_VEC4:
return SHADER_VARIABLE_UINT;
case GL_FLOAT:
case GL_FLOAT_VEC2:
case GL_FLOAT_VEC3:
case GL_FLOAT_VEC4:
return SHADER_VARIABLE_FLOAT;
case GL_FLOAT_MAT2:
case GL_FLOAT_MAT3:
case GL_FLOAT_MAT4:
case GL_FLOAT_MAT2x3:
case GL_FLOAT_MAT3x2:
case GL_FLOAT_MAT2x4:
case GL_FLOAT_MAT4x2:
case GL_FLOAT_MAT3x4:
case GL_FLOAT_MAT4x3:
DCHECK(is_input);
return SHADER_VARIABLE_FLOAT;
default:
NOTREACHED();
return SHADER_VARIABLE_UNDEFINED_TYPE;
}
}
// Scoped object which logs three UMA stats related to program cleanup when
// destructed:
// - GPU.DestroyProgramManagerPrograms.Elapsed - The amount of time spent
// destroying programs during ProgramManager::Destroy.
// - GPU.DestroyProgramManagerPrograms.Programs - The number of progams
// destroyed during ProgramManager::Destroy.
// - GPU.DestroyProgramManagerPrograms.ProgramsPerMs - The number of programs
// destroyed per millisecond during ProgramManager::Destroy. Only logged if
// both the number of programs and the elapsed time are greater than zero.
class ProgramDeletionScopedUmaTimeAndRate {
public:
ProgramDeletionScopedUmaTimeAndRate(int32_t count)
: count_(count), start_(base::TimeTicks::Now()) {}
~ProgramDeletionScopedUmaTimeAndRate() {
base::TimeDelta elapsed = base::TimeTicks::Now() - start_;
UMA_HISTOGRAM_TIMES("GPU.DestroyProgramManagerPrograms.Elapsed", elapsed);
UMA_HISTOGRAM_COUNTS("GPU.DestroyProgramManagerPrograms.Programs", count_);
double elapsed_ms = elapsed.InMillisecondsF();
if (count_ > 0 && elapsed_ms > 0) {
double rate = static_cast<double>(count_) / elapsed_ms;
UMA_HISTOGRAM_COUNTS("GPU.DestroyProgramManagerPrograms.ProgramsPerMs",
base::saturated_cast<int32_t>(rate));
}
}
private:
const int32_t count_;
const base::TimeTicks start_;
};
} // anonymous namespace.
Program::UniformInfo::UniformInfo()
: size(0),
type(GL_NONE),
accepts_api_type(0),
fake_location_base(0),
is_array(false) {}
Program::UniformInfo::UniformInfo(const std::string& client_name,
int client_location_base,
GLenum _type,
bool _is_array,
const std::vector<GLint>& service_locations)
: size(service_locations.size()),
type(_type),
accepts_api_type(0),
fake_location_base(client_location_base),
is_array(_is_array),
name(client_name),
element_locations(service_locations) {
switch (type) {
case GL_INT:
accepts_api_type = kUniform1i;
break;
case GL_INT_VEC2:
accepts_api_type = kUniform2i;
break;
case GL_INT_VEC3:
accepts_api_type = kUniform3i;
break;
case GL_INT_VEC4:
accepts_api_type = kUniform4i;
break;
case GL_UNSIGNED_INT:
accepts_api_type = kUniform1ui;
break;
case GL_UNSIGNED_INT_VEC2:
accepts_api_type = kUniform2ui;
break;
case GL_UNSIGNED_INT_VEC3:
accepts_api_type = kUniform3ui;
break;
case GL_UNSIGNED_INT_VEC4:
accepts_api_type = kUniform4ui;
break;
case GL_BOOL:
accepts_api_type = kUniform1i | kUniform1ui | kUniform1f;
break;
case GL_BOOL_VEC2:
accepts_api_type = kUniform2i | kUniform2ui | kUniform2f;
break;
case GL_BOOL_VEC3:
accepts_api_type = kUniform3i | kUniform3ui | kUniform3f;
break;
case GL_BOOL_VEC4:
accepts_api_type = kUniform4i | kUniform4ui | kUniform4f;
break;
case GL_FLOAT:
accepts_api_type = kUniform1f;
break;
case GL_FLOAT_VEC2:
accepts_api_type = kUniform2f;
break;
case GL_FLOAT_VEC3:
accepts_api_type = kUniform3f;
break;
case GL_FLOAT_VEC4:
accepts_api_type = kUniform4f;
break;
case GL_FLOAT_MAT2:
accepts_api_type = kUniformMatrix2f;
break;
case GL_FLOAT_MAT3:
accepts_api_type = kUniformMatrix3f;
break;
case GL_FLOAT_MAT4:
accepts_api_type = kUniformMatrix4f;
break;
case GL_FLOAT_MAT2x3:
accepts_api_type = kUniformMatrix2x3f;
break;
case GL_FLOAT_MAT2x4:
accepts_api_type = kUniformMatrix2x4f;
break;
case GL_FLOAT_MAT3x2:
accepts_api_type = kUniformMatrix3x2f;
break;
case GL_FLOAT_MAT3x4:
accepts_api_type = kUniformMatrix3x4f;
break;
case GL_FLOAT_MAT4x2:
accepts_api_type = kUniformMatrix4x2f;
break;
case GL_FLOAT_MAT4x3:
accepts_api_type = kUniformMatrix4x3f;
break;
case GL_SAMPLER_2D:
case GL_SAMPLER_2D_RECT_ARB:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_3D_OES:
case GL_SAMPLER_EXTERNAL_OES:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_CUBE_SHADOW:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
accepts_api_type = kUniform1i;
break;
default:
NOTREACHED() << "Unhandled UniformInfo type " << type;
break;
}
DCHECK_LT(0, size);
DCHECK(is_array || size == 1);
size_t num_texture_units = IsSampler() ? static_cast<size_t>(size) : 0u;
texture_units.clear();
texture_units.resize(num_texture_units, 0);
}
Program::UniformInfo::UniformInfo(const UniformInfo& other) = default;
Program::UniformInfo::~UniformInfo() {}
bool ProgramManager::HasBuiltInPrefix(const std::string& name) {
return name.length() >= 3 && name[0] == 'g' && name[1] == 'l' &&
name[2] == '_';
}
Program::Program(ProgramManager* manager, GLuint service_id)
: manager_(manager),
use_count_(0),
max_attrib_name_length_(0),
max_uniform_name_length_(0),
service_id_(service_id),
deleted_(false),
valid_(false),
link_status_(false),
uniforms_cleared_(false),
transform_feedback_buffer_mode_(GL_NONE),
fragment_output_type_mask_(0u),
fragment_output_written_mask_(0u) {
DCHECK(manager_);
manager_->StartTracking(this);
uint32_t packed_size = (manager_->max_vertex_attribs() + 15) / 16;
vertex_input_base_type_mask_.resize(packed_size);
vertex_input_active_mask_.resize(packed_size);
ClearVertexInputMasks();
}
void Program::Reset() {
valid_ = false;
link_status_ = false;
max_uniform_name_length_ = 0;
max_attrib_name_length_ = 0;
attrib_infos_.clear();
uniform_infos_.clear();
uniform_locations_.clear();
fragment_input_infos_.clear();
fragment_input_locations_.clear();
program_output_infos_.clear();
sampler_indices_.clear();
attrib_location_to_index_map_.clear();
fragment_output_type_mask_ = 0u;
fragment_output_written_mask_ = 0u;
ClearVertexInputMasks();
}
void Program::ClearVertexInputMasks() {
for (uint32_t ii = 0; ii < vertex_input_base_type_mask_.size(); ++ii) {
vertex_input_base_type_mask_[ii] = 0u;
vertex_input_active_mask_[ii] = 0u;
}
}
void Program::UpdateFragmentOutputBaseTypes() {
fragment_output_type_mask_ = 0u;
fragment_output_written_mask_ = 0u;
Shader* fragment_shader =
attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
DCHECK(fragment_shader);
for (auto const& output : fragment_shader->output_variable_list()) {
int location = output.location;
DCHECK(location == -1 ||
(location >= 0 &&
location < static_cast<int>(manager_->max_draw_buffers())));
if (location == -1)
location = 0;
if (ProgramManager::HasBuiltInPrefix(output.name)) {
if (output.name != "gl_FragColor" && output.name != "gl_FragData")
continue;
}
int count = static_cast<int>(output.arraySize == 0 ? 1 : output.arraySize);
// TODO(zmo): Handle the special case in ES2 where gl_FragColor could
// be broadcasting to all draw buffers.
DCHECK_LE(location + count,
static_cast<int>(manager_->max_draw_buffers()));
for (int ii = location; ii < location + count; ++ii) {
// TODO(zmo): This does not work with glBindFragDataLocationIndexed.
// crbug.com/628010
// For example:
// glBindFragDataLocationIndexed(program, loc, 0, "FragData0");
// glBindFragDataLocationIndexed(program, loc, 1, "FragData1");
// The program links OK, but both calling glGetFragDataLocation on both
// "FragData0" and "FragData1" returns 0.
int shift_bits = ii * 2;
fragment_output_written_mask_ |= 0x3 << shift_bits;
fragment_output_type_mask_ |=
InputOutputTypeToBaseType(false, output.type) << shift_bits;
}
}
}
void Program::UpdateVertexInputBaseTypes() {
ClearVertexInputMasks();
DCHECK_LE(attrib_infos_.size(), manager_->max_vertex_attribs());
for (size_t ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& input = attrib_infos_[ii];
if (ProgramManager::HasBuiltInPrefix(input.name)) {
continue;
}
int shift_bits = (input.location % 16) * 2;
vertex_input_active_mask_[ii / 16] |= 0x3 << shift_bits;
vertex_input_base_type_mask_[ii / 16] |=
InputOutputTypeToBaseType(true, input.type) << shift_bits;
}
}
void Program::UpdateUniformBlockSizeInfo() {
if (feature_info().IsWebGL1OrES2Context()) {
// Uniform blocks do not exist in ES2.
return;
}
uniform_block_size_info_.clear();
GLint num_uniform_blocks = 0;
glGetProgramiv(service_id_, GL_ACTIVE_UNIFORM_BLOCKS, &num_uniform_blocks);
uniform_block_size_info_.resize(num_uniform_blocks);
for (GLint ii = 0; ii < num_uniform_blocks; ++ii) {
GLint binding = 0;
glGetActiveUniformBlockiv(
service_id_, ii, GL_UNIFORM_BLOCK_BINDING, &binding);
uniform_block_size_info_[ii].binding = static_cast<GLuint>(binding);
GLint size = 0;
glGetActiveUniformBlockiv(
service_id_, ii, GL_UNIFORM_BLOCK_DATA_SIZE, &size);
uniform_block_size_info_[ii].data_size = static_cast<GLuint>(size);
}
}
void Program::SetUniformBlockBinding(GLuint index, GLuint binding) {
DCHECK_GT(uniform_block_size_info_.size(), index);
uniform_block_size_info_[index].binding = binding;
}
std::string Program::ProcessLogInfo(
const std::string& log) {
std::string output;
re2::StringPiece input(log);
std::string prior_log;
std::string hashed_name;
while (RE2::Consume(&input,
"(.*?)(webgl_[0123456789abcdefABCDEF]+)",
&prior_log,
&hashed_name)) {
output += prior_log;
const std::string* original_name =
GetOriginalNameFromHashedName(hashed_name);
if (original_name)
output += *original_name;
else
output += hashed_name;
}
return output + input.as_string();
}
void Program::UpdateLogInfo() {
GLint max_len = 0;
glGetProgramiv(service_id_, GL_INFO_LOG_LENGTH, &max_len);
if (max_len == 0) {
set_log_info(nullptr);
return;
}
std::unique_ptr<char[]> temp(new char[max_len]);
GLint len = 0;
glGetProgramInfoLog(service_id_, max_len, &len, temp.get());
DCHECK(max_len == 0 || len < max_len);
DCHECK(len == 0 || temp[len] == '\0');
std::string log(temp.get(), len);
log = ProcessLogInfo(log);
set_log_info(log.empty() ? nullptr : log.c_str());
}
void Program::ClearUniforms(std::vector<uint8_t>* zero_buffer) {
DCHECK(zero_buffer);
if (uniforms_cleared_) {
return;
}
uniforms_cleared_ = true;
for (const UniformInfo& uniform_info : uniform_infos_) {
GLint location = uniform_info.element_locations[0];
GLsizei size = uniform_info.size;
uint32_t unit_size =
GLES2Util::GetElementCountForUniformType(uniform_info.type) *
GLES2Util::GetElementSizeForUniformType(uniform_info.type);
DCHECK_LT(0u, unit_size);
uint32_t size_needed = size * unit_size;
if (size_needed > zero_buffer->size()) {
zero_buffer->resize(size_needed, 0u);
}
const void* zero = &(*zero_buffer)[0];
switch (uniform_info.type) {
case GL_FLOAT:
glUniform1fv(location, size, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_VEC2:
glUniform2fv(location, size, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_VEC3:
glUniform3fv(location, size, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_VEC4:
glUniform4fv(location, size, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_INT:
case GL_BOOL:
case GL_SAMPLER_2D:
case GL_SAMPLER_CUBE:
case GL_SAMPLER_EXTERNAL_OES: // extension.
case GL_SAMPLER_2D_RECT_ARB: // extension.
glUniform1iv(location, size, reinterpret_cast<const GLint*>(zero));
break;
case GL_INT_VEC2:
case GL_BOOL_VEC2:
glUniform2iv(location, size, reinterpret_cast<const GLint*>(zero));
break;
case GL_INT_VEC3:
case GL_BOOL_VEC3:
glUniform3iv(location, size, reinterpret_cast<const GLint*>(zero));
break;
case GL_INT_VEC4:
case GL_BOOL_VEC4:
glUniform4iv(location, size, reinterpret_cast<const GLint*>(zero));
break;
case GL_FLOAT_MAT2:
glUniformMatrix2fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT3:
glUniformMatrix3fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT4:
glUniformMatrix4fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
// ES3 types.
case GL_UNSIGNED_INT:
glUniform1uiv(location, size, reinterpret_cast<const GLuint*>(zero));
break;
case GL_SAMPLER_3D:
case GL_SAMPLER_2D_SHADOW:
case GL_SAMPLER_2D_ARRAY:
case GL_SAMPLER_2D_ARRAY_SHADOW:
case GL_SAMPLER_CUBE_SHADOW:
case GL_INT_SAMPLER_2D:
case GL_INT_SAMPLER_3D:
case GL_INT_SAMPLER_CUBE:
case GL_INT_SAMPLER_2D_ARRAY:
case GL_UNSIGNED_INT_SAMPLER_2D:
case GL_UNSIGNED_INT_SAMPLER_3D:
case GL_UNSIGNED_INT_SAMPLER_CUBE:
case GL_UNSIGNED_INT_SAMPLER_2D_ARRAY:
glUniform1iv(location, size, reinterpret_cast<const GLint*>(zero));
break;
case GL_UNSIGNED_INT_VEC2:
glUniform2uiv(location, size, reinterpret_cast<const GLuint*>(zero));
break;
case GL_UNSIGNED_INT_VEC3:
glUniform3uiv(location, size, reinterpret_cast<const GLuint*>(zero));
break;
case GL_UNSIGNED_INT_VEC4:
glUniform4uiv(location, size, reinterpret_cast<const GLuint*>(zero));
break;
case GL_FLOAT_MAT2x3:
glUniformMatrix2x3fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT3x2:
glUniformMatrix3x2fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT2x4:
glUniformMatrix2x4fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT4x2:
glUniformMatrix4x2fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT3x4:
glUniformMatrix3x4fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
case GL_FLOAT_MAT4x3:
glUniformMatrix4x3fv(
location, size, false, reinterpret_cast<const GLfloat*>(zero));
break;
default:
NOTREACHED();
break;
}
}
}
void Program::Update() {
Reset();
UpdateLogInfo();
link_status_ = true;
uniforms_cleared_ = false;
GLint num_attribs = 0;
GLint max_len = 0;
GLint max_location = -1;
glGetProgramiv(service_id_, GL_ACTIVE_ATTRIBUTES, &num_attribs);
glGetProgramiv(service_id_, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max_len);
// TODO(gman): Should we check for error?
std::unique_ptr<char[]> name_buffer(new char[max_len]);
for (GLint ii = 0; ii < num_attribs; ++ii) {
GLsizei length = 0;
GLsizei size = 0;
GLenum type = 0;
glGetActiveAttrib(
service_id_, ii, max_len, &length, &size, &type, name_buffer.get());
DCHECK(max_len == 0 || length < max_len);
DCHECK(length == 0 || name_buffer[length] == '\0');
std::string original_name;
GetVertexAttribData(name_buffer.get(), &original_name, &type);
// TODO(gman): Should we check for error?
GLint location = glGetAttribLocation(service_id_, name_buffer.get());
if (location > max_location) {
max_location = location;
}
attrib_infos_.push_back(VertexAttrib(1, type, original_name, location));
max_attrib_name_length_ = std::max(
max_attrib_name_length_, static_cast<GLsizei>(original_name.size()));
}
// Create attrib location to index map.
attrib_location_to_index_map_.resize(max_location + 1);
for (GLint ii = 0; ii <= max_location; ++ii) {
attrib_location_to_index_map_[ii] = -1;
}
for (size_t ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& info = attrib_infos_[ii];
if (info.location >= 0 && info.location <= max_location) {
attrib_location_to_index_map_[info.location] = ii;
}
}
if (manager_->gpu_preferences_.enable_gpu_service_logging_gpu) {
DVLOG(1) << "----: attribs for service_id: " << service_id();
for (size_t ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& info = attrib_infos_[ii];
DVLOG(1) << ii << ": loc = " << info.location
<< ", size = " << info.size
<< ", type = " << GLES2Util::GetStringEnum(info.type)
<< ", name = " << info.name;
}
}
UpdateUniforms();
if (manager_->gpu_preferences_.enable_gpu_service_logging_gpu) {
DVLOG(1) << "----: uniforms for service_id: " << service_id();
size_t ii = 0;
for (const UniformInfo& info : uniform_infos_) {
DVLOG(1) << ii++ << ": loc = " << info.element_locations[0]
<< ", size = " << info.size
<< ", type = " << GLES2Util::GetStringEnum(info.type)
<< ", name = " << info.name;
}
}
UpdateFragmentInputs();
UpdateProgramOutputs();
UpdateFragmentOutputBaseTypes();
UpdateVertexInputBaseTypes();
UpdateUniformBlockSizeInfo();
valid_ = true;
}
void Program::UpdateUniforms() {
// Reserve each client-bound uniform location. This way unbound uniforms will
// not be allocated to locations that user expects bound uniforms to be, even
// if the expected uniforms are optimized away by the driver.
for (const auto& binding : bind_uniform_location_map_) {
if (binding.second < 0)
continue;
size_t client_location = static_cast<size_t>(binding.second);
if (uniform_locations_.size() <= client_location)
uniform_locations_.resize(client_location + 1);
uniform_locations_[client_location].SetInactive();
}
GLint num_uniforms = 0;
glGetProgramiv(service_id_, GL_ACTIVE_UNIFORMS, &num_uniforms);
if (num_uniforms <= 0)
return;
uniform_infos_.resize(num_uniforms);
GLint name_buffer_length = 0;
glGetProgramiv(service_id_, GL_ACTIVE_UNIFORM_MAX_LENGTH,
&name_buffer_length);
DCHECK(name_buffer_length > 0);
std::unique_ptr<char[]> name_buffer(new char[name_buffer_length]);
size_t unused_client_location_cursor = 0;
for (GLint uniform_index = 0; uniform_index < num_uniforms; ++uniform_index) {
GLsizei name_length = 0;
GLsizei size = 0;
GLenum type = GL_NONE;
glGetActiveUniform(service_id_, uniform_index, name_buffer_length,
&name_length, &size, &type, name_buffer.get());
DCHECK(name_length < name_buffer_length);
DCHECK(name_length == 0 || name_buffer[name_length] == '\0');
std::string service_name(name_buffer.get(), name_length);
GLint service_location = -1;
// Force builtin uniforms (gl_DepthRange) to have invalid location.
if (!ProgramManager::HasBuiltInPrefix(service_name)) {
service_location =
glGetUniformLocation(service_id_, service_name.c_str());
}
// Determine the client name of the uniform and whether it is an array
// or not.
bool is_array = false;
std::string client_name;
for (size_t i = 0; i < kMaxAttachedShaders && client_name.empty(); ++i) {
const auto& shader = attached_shaders_[i];
if (!shader)
continue;
const sh::ShaderVariable* info = nullptr;
const sh::Uniform* uniform = shader->GetUniformInfo(service_name);
if (uniform &&
uniform->findInfoByMappedName(service_name, &info, &client_name)) {
DCHECK(!client_name.empty());
is_array = info->arraySize > 0;
type = info->type;
size = std::max(1u, info->arraySize);
} else {
const InterfaceBlockMap& interface_block_map =
shader->interface_block_map();
for (const auto& key_value : interface_block_map) {
const sh::InterfaceBlock& block = key_value.second;
bool find = false;
if (block.instanceName.empty()) {
for (const auto& value : block.fields) {
if (value.findInfoByMappedName(service_name, &info,
&client_name)) {
find = true;
break;
}
}
} else {
size_t pos = service_name.find_first_of('.');
std::string top_variable_name = service_name.substr(0, pos);
if (block.mappedName == top_variable_name) {
DCHECK(pos != std::string::npos);
for (const auto& field : block.fields) {
if (field.findInfoByMappedName(service_name.substr(
pos + 1), &info, &client_name)) {
find = true;
client_name = block.name + "." + client_name;
break;
}
}
}
}
if (find) {
DCHECK(!client_name.empty());
is_array = info->arraySize > 0;
type = info->type;
size = std::max(1u, info->arraySize);
break;
}
}
}
}
if (client_name.empty()) {
// This happens only in cases where we do not have ANGLE or run unit tests
// (or ANGLE has a severe bug).
client_name = service_name;
GLSLArrayName parsed_service_name(service_name);
is_array = size > 1 || parsed_service_name.IsArrayName();
}
std::string service_base_name = service_name;
std::string client_base_name = client_name;
if (is_array) {
// Some drivers incorrectly return an uniform name of size-1 array without
// "[0]". In this case, we correct the service name by appending "[0]" to
// it.
GLSLArrayName parsed_service_name(service_name);
if (parsed_service_name.IsArrayName()) {
service_base_name = parsed_service_name.base_name();
GLSLArrayName parsed_client_name(client_name);
client_base_name = parsed_client_name.base_name();
} else {
service_name += "[0]";
client_name += "[0]";
}
}
// Assign a location for the uniform: use either client-bound
// location or automatically assigned to an unused location.
size_t client_location_base = 0;
LocationMap::const_iterator it =
bind_uniform_location_map_.find(client_base_name);
if (it != bind_uniform_location_map_.end()) {
client_location_base = it->second;
} else {
while (unused_client_location_cursor < uniform_locations_.size() &&
!uniform_locations_[unused_client_location_cursor].IsUnused())
unused_client_location_cursor++;
if (unused_client_location_cursor == uniform_locations_.size())
uniform_locations_.resize(unused_client_location_cursor + 1);
client_location_base = unused_client_location_cursor;
unused_client_location_cursor++;
}
// Populate the uniform list entry.
std::vector<GLint> service_locations;
service_locations.resize(size);
service_locations[0] = service_location;
if (size > 1) {
for (GLsizei ii = 1; ii < size; ++ii) {
std::string element_name(service_base_name + "[" +
base::IntToString(ii) + "]");
service_locations[ii] =
glGetUniformLocation(service_id_, element_name.c_str());
}
}
UniformInfo& info = uniform_infos_[uniform_index];
info = UniformInfo(client_name, client_location_base, type, is_array,
service_locations);
if (info.IsSampler()) {
sampler_indices_.push_back(uniform_index);
}
// Populate the uniform location list entry.
// Before linking, we already validated that no two statically used uniforms
// are bound to the same location.
DCHECK(!uniform_locations_[client_location_base].IsActive());
uniform_locations_[client_location_base].SetActive(&info);
max_uniform_name_length_ = std::max(max_uniform_name_length_,
static_cast<GLsizei>(info.name.size()));
}
}
void Program::UpdateFragmentInputs() {
if (!feature_info().feature_flags().chromium_path_rendering)
return;
for (const auto& binding : bind_fragment_input_location_map_) {
if (binding.second < 0)
continue;
size_t client_location = static_cast<size_t>(binding.second);
if (fragment_input_locations_.size() <= client_location)
fragment_input_locations_.resize(client_location + 1);
fragment_input_locations_[client_location].SetInactive();
}
GLint num_fragment_inputs = 0;
glGetProgramInterfaceiv(service_id_, GL_FRAGMENT_INPUT_NV,
GL_ACTIVE_RESOURCES, &num_fragment_inputs);
if (num_fragment_inputs <= 0)
return;
GLint max_len = 0;
glGetProgramInterfaceiv(service_id_, GL_FRAGMENT_INPUT_NV, GL_MAX_NAME_LENGTH,
&max_len);
DCHECK(max_len > 0);
std::unique_ptr<char[]> name_buffer(new char[max_len]);
Shader* fragment_shader =
attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
const GLenum kQueryProperties[] = {GL_LOCATION, GL_TYPE, GL_ARRAY_SIZE};
std::vector<size_t> client_location_indices;
for (GLint ii = 0; ii < num_fragment_inputs; ++ii) {
GLsizei name_length = 0;
glGetProgramResourceName(service_id_, GL_FRAGMENT_INPUT_NV, ii, max_len,
&name_length, name_buffer.get());
DCHECK(name_length < max_len);
DCHECK(name_length == 0 || name_buffer[name_length] == '\0');
// A fragment shader can have gl_FragCoord, gl_FrontFacing or gl_PointCoord
// built-ins as its input, as well as custom varyings. We are interested in
// custom varyings, client is allowed to bind only them.
std::string service_name(name_buffer.get(), name_length);
if (ProgramManager::HasBuiltInPrefix(service_name))
continue;
// Unlike when binding uniforms, we expect the driver to give correct
// names: "name" for simple variable, "name[0]" for an array.
GLsizei query_length = 0;
GLint query_results[arraysize(kQueryProperties)] = {
0,
};
glGetProgramResourceiv(service_id_, GL_FRAGMENT_INPUT_NV, ii,
arraysize(kQueryProperties), kQueryProperties,
arraysize(query_results), &query_length,
query_results);
DCHECK(query_length == arraysize(kQueryProperties));
GLenum type = static_cast<GLenum>(query_results[1]);
GLsizei size = static_cast<GLsizei>(query_results[2]);
std::string client_name;
const sh::Varying* varying = fragment_shader->GetVaryingInfo(service_name);
const sh::ShaderVariable* info = nullptr;
if (varying &&
varying->findInfoByMappedName(service_name, &info, &client_name)) {
type = info->type;
size = std::max(1u, info->arraySize);
} else {
// Should only happen if there are major bugs in the driver, ANGLE or if
// the shader translator is disabled.
DCHECK(feature_info().disable_shader_translator());
client_name = service_name;
if (size <= 0)
continue;
}
auto it = bind_fragment_input_location_map_.find(client_name);
if (it != bind_fragment_input_location_map_.end() && it->second >= 0 &&
query_results[0] >= 0) {
size_t client_location = static_cast<size_t>(it->second);
GLuint service_location = static_cast<GLuint>(query_results[0]);
fragment_input_infos_.push_back(
FragmentInputInfo(type, service_location));
client_location_indices.push_back(client_location);
}
if (size <= 1)
continue;
GLSLArrayName parsed_client_name(client_name);
GLSLArrayName parsed_service_name(service_name);
if (!parsed_client_name.IsArrayName() ||
parsed_client_name.element_index() != 0 ||
!parsed_service_name.IsArrayName() ||
parsed_service_name.element_index() != 0) {
NOTREACHED() << "GLSL array variable names should end with \"[0]\". "
"Likely driver or ANGLE error.";
continue;
}
for (GLsizei jj = 1; jj < size; ++jj) {
std::string array_spec(std::string("[") + base::IntToString(jj) + "]");
std::string client_element_name =
parsed_client_name.base_name() + array_spec;
auto it = bind_fragment_input_location_map_.find(client_element_name);
if (it != bind_fragment_input_location_map_.end() && it->second >= 0) {
size_t client_location = static_cast<size_t>(it->second);
std::string service_element_name =
parsed_service_name.base_name() + array_spec;
GLint service_location = glGetProgramResourceLocation(
service_id_, GL_FRAGMENT_INPUT_NV, service_element_name.c_str());
if (service_location >= 0) {
fragment_input_infos_.push_back(
FragmentInputInfo(type, static_cast<GLuint>(service_location)));
client_location_indices.push_back(client_location);
}
}
}
}
for (size_t i = 0; i < client_location_indices.size(); ++i) {
size_t client_location = client_location_indices[i];
// Before linking, we already validated that no two statically used fragment
// inputs are bound to the same location.
DCHECK(!fragment_input_locations_[client_location].IsActive());
fragment_input_locations_[client_location].SetActive(
&fragment_input_infos_[i]);
}
}
void Program::UpdateProgramOutputs() {
if (!feature_info().gl_version_info().is_es3_capable ||
feature_info().disable_shader_translator())
return;
Shader* fragment_shader =
attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
for (auto const& output_var : fragment_shader->output_variable_list()) {
const std::string& service_name = output_var.mappedName;
// A fragment shader can have gl_FragColor, gl_SecondaryFragColor, etc
// built-ins as its output, as well as custom varyings. We are interested
// only in custom varyings, client is allowed to bind only them.
if (ProgramManager::HasBuiltInPrefix(service_name))
continue;
std::string client_name = output_var.name;
if (output_var.arraySize == 0) {
GLint color_name =
glGetFragDataLocation(service_id_, service_name.c_str());
if (color_name < 0)
continue;
GLint index = 0;
if (feature_info().feature_flags().ext_blend_func_extended)
index = glGetFragDataIndex(service_id_, service_name.c_str());
if (index < 0)
continue;
program_output_infos_.push_back(
ProgramOutputInfo(color_name, index, client_name));
} else if (feature_info().workarounds().get_frag_data_info_bug) {
DCHECK(!feature_info().feature_flags().ext_blend_func_extended);
GLint color_name =
glGetFragDataLocation(service_id_, service_name.c_str());
if (color_name >= 0) {
GLint index = 0;
for (size_t ii = 0; ii < output_var.arraySize; ++ii) {
std::string array_spec(
std::string("[") + base::IntToString(ii) + "]");
program_output_infos_.push_back(ProgramOutputInfo(
color_name + ii, index, client_name + array_spec));
}
}
} else {
for (size_t ii = 0; ii < output_var.arraySize; ++ii) {
std::string array_spec(std::string("[") + base::IntToString(ii) + "]");
std::string service_element_name(service_name + array_spec);
GLint color_name =
glGetFragDataLocation(service_id_, service_element_name.c_str());
if (color_name < 0)
continue;
GLint index = 0;
if (feature_info().feature_flags().ext_blend_func_extended)
index = glGetFragDataIndex(service_id_, service_element_name.c_str());
if (index < 0)
continue;
program_output_infos_.push_back(
ProgramOutputInfo(color_name, index, client_name + array_spec));
}
}
}
}
void Program::ExecuteBindAttribLocationCalls() {
for (const auto& key_value : bind_attrib_location_map_) {
const std::string* mapped_name = GetAttribMappedName(key_value.first);
if (mapped_name)
glBindAttribLocation(service_id_, key_value.second, mapped_name->c_str());
}
}
bool Program::ExecuteTransformFeedbackVaryingsCall() {
if (!transform_feedback_varyings_.empty()) {
Shader* vertex_shader = attached_shaders_[0].get();
if (!vertex_shader) {
set_log_info("TransformFeedbackVaryings: missing vertex shader");
return false;
}
std::vector<const char*> mapped_names;
mapped_names.reserve(transform_feedback_varyings_.size());
for (StringVector::const_iterator it =
transform_feedback_varyings_.begin();
it != transform_feedback_varyings_.end(); ++it) {
const std::string& orig = *it;
const std::string* mapped = vertex_shader->GetVaryingMappedName(orig);
if (!mapped) {
std::string log = "TransformFeedbackVaryings: no varying named " + orig;
set_log_info(log.c_str());
return false;
}
mapped_names.push_back(mapped->c_str());
}
glTransformFeedbackVaryings(service_id_,
mapped_names.size(),
&mapped_names.front(),
transform_feedback_buffer_mode_);
}
return true;
}
void Program::ExecuteProgramOutputBindCalls() {
if (feature_info().disable_shader_translator()) {
return;
}
Shader* fragment_shader =
attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
DCHECK(fragment_shader && fragment_shader->valid());
if (fragment_shader->shader_version() != 100) {
// ES SL 1.00 does not have mechanism for introducing variables that could
// be bound. This means that ES SL 1.00 binding calls would be to
// non-existing variable names. Binding calls are only executed with ES SL
// 3.00 and higher.
for (auto const& output_var : fragment_shader->output_variable_list()) {
size_t count = std::max(output_var.arraySize, 1u);
bool is_array = output_var.arraySize > 0;
for (size_t jj = 0; jj < count; ++jj) {
std::string name = output_var.name;
std::string array_spec;
if (is_array) {
array_spec = std::string("[") + base::IntToString(jj) + "]";
name += array_spec;
}
auto it = bind_program_output_location_index_map_.find(name);
if (it == bind_program_output_location_index_map_.end())
continue;
std::string mapped_name = output_var.mappedName;
if (is_array) {
mapped_name += array_spec;
}
const auto& binding = it->second;
if (binding.second == 0) {
// Handles the cases where client called glBindFragDataLocation as
// well as glBindFragDataLocationIndexed with index == 0.
glBindFragDataLocation(service_id_, binding.first,
mapped_name.c_str());
} else {
DCHECK(feature_info().feature_flags().ext_blend_func_extended);
glBindFragDataLocationIndexed(service_id_, binding.first,
binding.second, mapped_name.c_str());
}
}
}
return;
}
// Support for EXT_blend_func_extended when used with ES SL 1.00 client
// shader.
if (feature_info().gl_version_info().is_es ||
!feature_info().feature_flags().ext_blend_func_extended)
return;
// The underlying context does not support EXT_blend_func_extended
// natively, need to emulate it.
// ES SL 1.00 is the only language which contains GLSL built-ins
// that need to be bound to color indices. If clients use other
// languages, they also bind the output variables themselves.
// Map gl_SecondaryFragColorEXT / gl_SecondaryFragDataEXT of
// EXT_blend_func_extended to real color indexes.
for (auto const& output_var : fragment_shader->output_variable_list()) {
const std::string& name = output_var.mappedName;
if (name == "gl_FragColor") {
DCHECK_EQ(-1, output_var.location);
DCHECK_EQ(0u, output_var.arraySize);
// We leave these unbound by not giving a binding name. The driver will
// bind this.
} else if (name == "gl_FragData") {
DCHECK_EQ(-1, output_var.location);
DCHECK_NE(0u, output_var.arraySize);
// We leave these unbound by not giving a binding name. The driver will
// bind this.
} else if (name == "gl_SecondaryFragColorEXT") {
DCHECK_EQ(-1, output_var.location);
DCHECK_EQ(0u, output_var.arraySize);
glBindFragDataLocationIndexed(service_id_, 0, 1,
"angle_SecondaryFragColor");
} else if (name == "gl_SecondaryFragDataEXT") {
DCHECK_EQ(-1, output_var.location);
DCHECK_NE(0u, output_var.arraySize);
glBindFragDataLocationIndexed(service_id_, 0, 1,
"angle_SecondaryFragData");
}
}
}
bool Program::Link(ShaderManager* manager,
Program::VaryingsPackingOption varyings_packing_option,
const ShaderCacheCallback& shader_callback) {
ClearLinkStatus();
if (!AttachedShadersExist()) {
set_log_info("missing shaders");
return false;
}
TimeTicks before_time = TimeTicks::Now();
bool link = true;
ProgramCache* cache = manager_->program_cache_;
if (cache) {
DCHECK(!attached_shaders_[0]->last_compiled_source().empty() &&
!attached_shaders_[1]->last_compiled_source().empty());
ProgramCache::LinkedProgramStatus status = cache->GetLinkedProgramStatus(
attached_shaders_[0]->last_compiled_signature(),
attached_shaders_[1]->last_compiled_signature(),
&bind_attrib_location_map_,
transform_feedback_varyings_,
transform_feedback_buffer_mode_);
bool cache_hit = status == ProgramCache::LINK_SUCCEEDED;
UMA_HISTOGRAM_BOOLEAN("GPU.ProgramCache.CacheHit", cache_hit);
if (cache_hit) {
ProgramCache::ProgramLoadResult success =
cache->LoadLinkedProgram(service_id(),
attached_shaders_[0].get(),
attached_shaders_[1].get(),
&bind_attrib_location_map_,
transform_feedback_varyings_,
transform_feedback_buffer_mode_,
shader_callback);
link = success != ProgramCache::PROGRAM_LOAD_SUCCESS;
UMA_HISTOGRAM_BOOLEAN("GPU.ProgramCache.LoadBinarySuccess", !link);
}
}
if (link) {
CompileAttachedShaders();
if (!CanLink()) {
set_log_info("invalid shaders");
return false;
}
if (DetectShaderVersionMismatch()) {
set_log_info("Versions of linked shaders have to match.");
return false;
}
if (DetectAttribLocationBindingConflicts()) {
set_log_info("glBindAttribLocation() conflicts");
return false;
}
std::string conflicting_name;
if (DetectUniformsMismatch(&conflicting_name)) {
std::string info_log = "Uniforms with the same name but different "
"type/precision: " + conflicting_name;
set_log_info(ProcessLogInfo(info_log).c_str());
return false;
}
if (DetectUniformLocationBindingConflicts()) {
set_log_info("glBindUniformLocationCHROMIUM() conflicts");
return false;
}
if (DetectInterfaceBlocksMismatch(&conflicting_name)) {
std::string info_log =
"Interface blocks with the same name but different"
" fields/layout: " +
conflicting_name;
set_log_info(ProcessLogInfo(info_log).c_str());
return false;
}
if (DetectVaryingsMismatch(&conflicting_name)) {
std::string info_log = "Varyings with the same name but different type, "
"or statically used varyings in fragment shader "
"are not declared in vertex shader: " +
conflicting_name;
set_log_info(ProcessLogInfo(info_log).c_str());
return false;
}
if (DetectFragmentInputLocationBindingConflicts()) {
set_log_info("glBindFragmentInputLocationCHROMIUM() conflicts");
return false;
}
if (DetectProgramOutputLocationBindingConflicts()) {
set_log_info("glBindFragDataLocation() conflicts");
return false;
}
if (DetectBuiltInInvariantConflicts()) {
set_log_info("Invariant settings for certain built-in varyings "
"have to match");
return false;
}
if (DetectGlobalNameConflicts(&conflicting_name)) {
std::string info_log = "Name conflicts between an uniform and an "
"attribute: " + conflicting_name;
set_log_info(ProcessLogInfo(info_log).c_str());
return false;
}
if (!CheckVaryingsPacking(varyings_packing_option)) {
set_log_info("Varyings over maximum register limit");
return false;
}
ExecuteBindAttribLocationCalls();
if (!ExecuteTransformFeedbackVaryingsCall()) {
return false;
}
ExecuteProgramOutputBindCalls();
before_time = TimeTicks::Now();
if (cache && gl::g_driver_gl.ext.b_GL_ARB_get_program_binary) {
glProgramParameteri(service_id(),
PROGRAM_BINARY_RETRIEVABLE_HINT,
GL_TRUE);
}
glLinkProgram(service_id());
}
GLint success = 0;
glGetProgramiv(service_id(), GL_LINK_STATUS, &success);
if (success == GL_TRUE) {
Update();
if (link) {
// ANGLE updates the translated shader sources on link.
for (auto shader : attached_shaders_) {
shader->RefreshTranslatedShaderSource();
}
if (cache) {
cache->SaveLinkedProgram(service_id(),
attached_shaders_[0].get(),
attached_shaders_[1].get(),
&bind_attrib_location_map_,
transform_feedback_varyings_,
transform_feedback_buffer_mode_,
shader_callback);
}
UMA_HISTOGRAM_CUSTOM_COUNTS(
"GPU.ProgramCache.BinaryCacheMissTime",
static_cast<base::HistogramBase::Sample>(
(TimeTicks::Now() - before_time).InMicroseconds()),
1,
static_cast<base::HistogramBase::Sample>(
TimeDelta::FromSeconds(10).InMicroseconds()),
50);
} else {
UMA_HISTOGRAM_CUSTOM_COUNTS(
"GPU.ProgramCache.BinaryCacheHitTime",
static_cast<base::HistogramBase::Sample>(
(TimeTicks::Now() - before_time).InMicroseconds()),
1,
static_cast<base::HistogramBase::Sample>(
TimeDelta::FromSeconds(1).InMicroseconds()),
50);
}
} else {
UpdateLogInfo();
}
return success == GL_TRUE;
}
void Program::Validate() {
if (!IsValid()) {
set_log_info("program not linked");
return;
}
glValidateProgram(service_id());
UpdateLogInfo();
}
GLint Program::GetUniformFakeLocation(
const std::string& name) const {
GLSLArrayName parsed_name(name);
for (const UniformInfo& info : uniform_infos_) {
if (info.name == name ||
(info.is_array &&
info.name.compare(0, info.name.size() - 3, name) == 0)) {
return info.fake_location_base;
} else if (parsed_name.IsArrayName() && info.is_array) {
// Look for an array specification.
size_t open_pos = info.name.find_last_of('[');
if (info.name.compare(0, open_pos, parsed_name.base_name()) == 0) {
int index = parsed_name.element_index();
if (index < info.size) {
DCHECK_GT(static_cast<int>(info.element_locations.size()), index);
if (info.element_locations[index] == -1)
return -1;
return ProgramManager::MakeFakeLocation(
info.fake_location_base, index);
}
}
}
}
return -1;
}
GLint Program::GetAttribLocation(
const std::string& original_name) const {
for (GLuint ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& info = attrib_infos_[ii];
if (info.name == original_name) {
return info.location;
}
}
return -1;
}
const Program::UniformInfo*
Program::GetUniformInfoByFakeLocation(
GLint fake_location, GLint* real_location, GLint* array_index) const {
DCHECK(real_location);
DCHECK(array_index);
if (fake_location < 0)
return nullptr;
size_t location_index =
GetUniformLocationIndexFromFakeLocation(fake_location);
if (location_index >= uniform_locations_.size())
return nullptr;
if (!uniform_locations_[location_index].IsActive())
return nullptr;
const UniformInfo* info =
uniform_locations_[location_index].shader_variable();
size_t element_index = GetArrayElementIndexFromFakeLocation(fake_location);
if (static_cast<GLsizei>(element_index) >= info->size)
return nullptr;
*real_location = info->element_locations[element_index];
*array_index = element_index;
return info;
}
bool Program::IsInactiveUniformLocationByFakeLocation(
GLint fake_location) const {
if (fake_location < 0)
return true;
size_t location_index =
GetUniformLocationIndexFromFakeLocation(fake_location);
if (location_index >= uniform_locations_.size())
return false;
return uniform_locations_[location_index].IsInactive();
}
const std::string* Program::GetAttribMappedName(
const std::string& original_name) const {
for (auto shader : attached_shaders_) {
if (shader) {
const std::string* mapped_name =
shader->GetAttribMappedName(original_name);
if (mapped_name)
return mapped_name;
}
}
return nullptr;
}
const std::string* Program::GetUniformMappedName(
const std::string& original_name) const {
for (auto shader : attached_shaders_) {
if (shader) {
const std::string* mapped_name =
shader->GetUniformMappedName(original_name);
if (mapped_name)
return mapped_name;
}
}
return nullptr;
}
const std::string* Program::GetOriginalNameFromHashedName(
const std::string& hashed_name) const {
for (auto shader : attached_shaders_) {
if (shader) {
const std::string* original_name =
shader->GetOriginalNameFromHashedName(hashed_name);
if (original_name)
return original_name;
}
}
return nullptr;
}
const Program::FragmentInputInfo* Program::GetFragmentInputInfoByFakeLocation(
GLint fake_location) const {
if (fake_location < 0)
return nullptr;
size_t location_index = static_cast<size_t>(fake_location);
if (location_index >= fragment_input_locations_.size())
return nullptr;
if (!fragment_input_locations_[location_index].IsActive())
return nullptr;
return fragment_input_locations_[location_index].shader_variable();
}
bool Program::IsInactiveFragmentInputLocationByFakeLocation(
GLint fake_location) const {
if (fake_location < 0)
return true;
size_t location_index = static_cast<size_t>(fake_location);
if (location_index >= fragment_input_locations_.size())
return false;
return fragment_input_locations_[location_index].IsInactive();
}
bool Program::SetUniformLocationBinding(
const std::string& name, GLint location) {
std::string short_name;
int element_index = 0;
if (!GetUniformNameSansElement(name, &element_index, &short_name) ||
element_index != 0) {
return false;
}
bind_uniform_location_map_[short_name] = location;
return true;
}
void Program::SetFragmentInputLocationBinding(const std::string& name,
GLint location) {
// The client wants to bind either "name" or "name[0]".
// GL ES 3.1 spec refers to active array names with language such as:
// "if the string identifies the base name of an active array, where the
// string would exactly match the name of the variable if the suffix "[0]"
// were appended to the string".
// At this point we can not know if the string identifies a simple variable,
// a base name of an array, or nothing. Store both, so if user overwrites
// either, both still work correctly.
bind_fragment_input_location_map_[name] = location;
bind_fragment_input_location_map_[name + "[0]"] = location;
}
void Program::SetProgramOutputLocationBinding(const std::string& name,
GLuint color_name) {
SetProgramOutputLocationIndexedBinding(name, color_name, 0);
}
void Program::SetProgramOutputLocationIndexedBinding(const std::string& name,
GLuint color_name,
GLuint index) {
bind_program_output_location_index_map_[name] =
std::make_pair(color_name, index);
bind_program_output_location_index_map_[name + "[0]"] =
std::make_pair(color_name, index);
}
void Program::GetVertexAttribData(
const std::string& name, std::string* original_name, GLenum* type) const {
DCHECK(original_name);
DCHECK(type);
Shader* shader = attached_shaders_[ShaderTypeToIndex(GL_VERTEX_SHADER)].get();
if (shader) {
// Vertex attributes can not be arrays or structs (GLSL ES 3.00.4, section
// 4.3.4, "Input Variables"), so the top level sh::Attribute returns the
// information we need.
const sh::Attribute* info = shader->GetAttribInfo(name);
if (info) {
*original_name = info->name;
*type = info->type;
return;
}
}
// TODO(zmo): this path should never be reached unless there is a serious
// bug in the driver or in ANGLE translator.
*original_name = name;
}
const Program::UniformInfo*
Program::GetUniformInfo(
GLint index) const {
if (static_cast<size_t>(index) >= uniform_infos_.size()) {
return NULL;
}
return &uniform_infos_[index];
}
bool Program::SetSamplers(
GLint num_texture_units, GLint fake_location,
GLsizei count, const GLint* value) {
// The caller has checked that the location is active and valid.
DCHECK(fake_location >= 0);
size_t location_index =
GetUniformLocationIndexFromFakeLocation(fake_location);
DCHECK(location_index < uniform_locations_.size());
DCHECK(uniform_locations_[location_index].IsActive());
UniformInfo* info = uniform_locations_[location_index].shader_variable();
size_t element_index = GetArrayElementIndexFromFakeLocation(fake_location);
if (static_cast<GLsizei>(element_index) >= info->size)
return true;
count = std::min(info->size - static_cast<GLsizei>(element_index), count);
if (info->IsSampler() && count > 0) {
for (GLsizei ii = 0; ii < count; ++ii) {
if (value[ii] < 0 || value[ii] >= num_texture_units) {
return false;
}
}
std::copy(value, value + count,
info->texture_units.begin() + element_index);
return true;
}
return true;
}
void Program::GetProgramiv(GLenum pname, GLint* params) {
switch (pname) {
case GL_ACTIVE_ATTRIBUTES:
*params = attrib_infos_.size();
break;
case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH:
// Notice +1 to accomodate NULL terminator.
*params = max_attrib_name_length_ + 1;
break;
case GL_ACTIVE_UNIFORMS:
*params = uniform_infos_.size();
break;
case GL_ACTIVE_UNIFORM_MAX_LENGTH:
// Notice +1 to accomodate NULL terminator.
*params = max_uniform_name_length_ + 1;
break;
case GL_LINK_STATUS:
*params = link_status_;
break;
case GL_INFO_LOG_LENGTH:
// Notice +1 to accomodate NULL terminator.
*params = log_info_.get() ? (log_info_->size() + 1) : 0;
break;
case GL_DELETE_STATUS:
*params = deleted_;
break;
case GL_VALIDATE_STATUS:
if (!IsValid()) {
*params = GL_FALSE;
} else {
glGetProgramiv(service_id_, pname, params);
}
break;
default:
glGetProgramiv(service_id_, pname, params);
break;
}
}
bool Program::AttachShader(
ShaderManager* shader_manager,
Shader* shader) {
DCHECK(shader_manager);
DCHECK(shader);
int index = ShaderTypeToIndex(shader->shader_type());
if (attached_shaders_[index].get() != NULL) {
return false;
}
attached_shaders_[index] = scoped_refptr<Shader>(shader);
shader_manager->UseShader(shader);
return true;
}
bool Program::IsShaderAttached(Shader* shader) {
return attached_shaders_[ShaderTypeToIndex(shader->shader_type())].get() ==
shader;
}
void Program::DetachShader(
ShaderManager* shader_manager,
Shader* shader) {
DCHECK(shader_manager);
DCHECK(shader);
DCHECK(IsShaderAttached(shader));
attached_shaders_[ShaderTypeToIndex(shader->shader_type())] = NULL;
shader_manager->UnuseShader(shader);
}
void Program::DetachShaders(ShaderManager* shader_manager) {
DCHECK(shader_manager);
for (auto shader : attached_shaders_) {
if (shader) {
DetachShader(shader_manager, shader.get());
}
}
}
void Program::CompileAttachedShaders() {
for (auto shader : attached_shaders_) {
if (shader) {
shader->DoCompile();
}
}
}
bool Program::AttachedShadersExist() const {
for (auto shader : attached_shaders_) {
if (!shader)
return false;
}
return true;
}
bool Program::CanLink() const {
for (auto shader : attached_shaders_) {
if (!shader || !shader->valid()) {
return false;
}
}
return true;
}
bool Program::DetectShaderVersionMismatch() const {
int version = Shader::kUndefinedShaderVersion;
for (auto shader : attached_shaders_) {
if (shader) {
if (version != Shader::kUndefinedShaderVersion &&
shader->shader_version() != version) {
return true;
}
version = shader->shader_version();
DCHECK(version != Shader::kUndefinedShaderVersion);
}
}
return false;
}
bool Program::DetectAttribLocationBindingConflicts() const {
std::set<GLint> location_binding_used;
for (const auto& key_value : bind_attrib_location_map_) {
// Find out if an attribute is statically used in this program's shaders.
const sh::Attribute* attrib = NULL;
const std::string* mapped_name = GetAttribMappedName(key_value.first);
if (!mapped_name)
continue;
for (auto shader : attached_shaders_) {
if (!shader || !shader->valid())
continue;
attrib = shader->GetAttribInfo(*mapped_name);
if (attrib) {
if (attrib->staticUse)
break;
else
attrib = NULL;
}
}
if (attrib) {
size_t num_of_locations = 1;
switch (attrib->type) {
case GL_FLOAT_MAT2:
num_of_locations = 2;
break;
case GL_FLOAT_MAT3:
num_of_locations = 3;
break;
case GL_FLOAT_MAT4:
num_of_locations = 4;
break;
default:
break;
}
for (size_t ii = 0; ii < num_of_locations; ++ii) {
GLint loc = key_value.second + ii;
auto result = location_binding_used.insert(loc);
if (!result.second)
return true;
}
}
}
return false;
}
bool Program::DetectUniformLocationBindingConflicts() const {
std::set<GLint> location_binding_used;
for (auto it : bind_uniform_location_map_) {
// Find out if an attribute is statically used in this program's shaders.
const sh::Uniform* uniform = nullptr;
const std::string* mapped_name = GetUniformMappedName(it.first);
if (!mapped_name)
continue;
for (auto shader : attached_shaders_) {
if (!shader || !shader->valid())
continue;
uniform = shader->GetUniformInfo(*mapped_name);
if (uniform) {
if (uniform->staticUse)
break;
else
uniform = nullptr;
}
}
if (uniform) {
auto result = location_binding_used.insert(it.second);
if (!result.second)
return true;
}
}
return false;
}
bool Program::DetectUniformsMismatch(std::string* conflicting_name) const {
typedef std::map<std::string, const sh::Uniform*> UniformPointerMap;
UniformPointerMap uniform_pointer_map;
for (auto shader : attached_shaders_) {
const UniformMap& shader_uniforms = shader->uniform_map();
for (const auto& key_value : shader_uniforms) {
const std::string& name = key_value.first;
UniformPointerMap::iterator hit = uniform_pointer_map.find(name);
if (hit == uniform_pointer_map.end()) {
uniform_pointer_map[name] = &(key_value.second);
} else {
// If a uniform is in the map, i.e., it has already been declared by
// another shader, then the type, precision, etc. must match.
if (hit->second->isSameUniformAtLinkTime(key_value.second))
continue;
*conflicting_name = name;
return true;
}
}
}
return false;
}
bool Program::DetectInterfaceBlocksMismatch(
std::string* conflicting_name) const {
std::map<std::string, const sh::InterfaceBlock*> interface_pointer_map;
for (auto shader : attached_shaders_) {
const InterfaceBlockMap& shader_interfaces = shader->interface_block_map();
for (const auto& it : shader_interfaces) {
const auto& name = it.first;
auto hit = interface_pointer_map.find(name);
if (hit == interface_pointer_map.end()) {
interface_pointer_map[name] = &(it.second);
} else {
// If an interface is in the map, i.e., it has already been declared by
// another shader, then the layout must match.
if (hit->second->isSameInterfaceBlockAtLinkTime(it.second))
continue;
*conflicting_name = name;
return true;
}
}
}
return false;
}
bool Program::DetectVaryingsMismatch(std::string* conflicting_name) const {
DCHECK(attached_shaders_[0].get() &&
attached_shaders_[0]->shader_type() == GL_VERTEX_SHADER &&
attached_shaders_[1].get() &&
attached_shaders_[1]->shader_type() == GL_FRAGMENT_SHADER);
const VaryingMap* vertex_varyings = &(attached_shaders_[0]->varying_map());
const VaryingMap* fragment_varyings = &(attached_shaders_[1]->varying_map());
int shader_version = attached_shaders_[0]->shader_version();
for (const auto& key_value : *fragment_varyings) {
const std::string& name = key_value.first;
if (IsBuiltInFragmentVarying(name))
continue;
VaryingMap::const_iterator hit = vertex_varyings->find(name);
if (hit == vertex_varyings->end()) {
if (key_value.second.staticUse) {
*conflicting_name = name;
return true;
}
continue;
}
if (!hit->second.isSameVaryingAtLinkTime(key_value.second,
shader_version)) {
*conflicting_name = name;
return true;
}
}
return false;
}
bool Program::DetectFragmentInputLocationBindingConflicts() const {
auto* shader = attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
if (!shader || !shader->valid())
return false;
std::set<GLint> location_binding_used;
for (auto it : bind_fragment_input_location_map_) {
// Find out if an fragment input is statically used in this program's
// shaders.
const std::string* mapped_name = shader->GetVaryingMappedName(it.first);
if (!mapped_name)
continue;
const sh::Varying* fragment_input = shader->GetVaryingInfo(*mapped_name);
if (fragment_input && fragment_input->staticUse) {
auto result = location_binding_used.insert(it.second);
if (!result.second)
return true;
}
}
return false;
}
bool Program::DetectProgramOutputLocationBindingConflicts() const {
if (feature_info().disable_shader_translator()) {
return false;
}
Shader* shader =
attached_shaders_[ShaderTypeToIndex(GL_FRAGMENT_SHADER)].get();
DCHECK(shader && shader->valid());
if (shader->shader_version() == 100)
return false;
std::set<LocationIndexMap::mapped_type> location_binding_used;
for (auto const& output_var : shader->output_variable_list()) {
if (!output_var.staticUse)
continue;
size_t count = std::max(output_var.arraySize, 1u);
bool is_array = output_var.arraySize > 0;
for (size_t jj = 0; jj < count; ++jj) {
std::string name = output_var.name;
if (is_array)
name += std::string("[") + base::IntToString(jj) + "]";
auto it = bind_program_output_location_index_map_.find(name);
if (it == bind_program_output_location_index_map_.end())
continue;
auto result = location_binding_used.insert(it->second);
if (!result.second)
return true;
}
}
return false;
}
bool Program::DetectBuiltInInvariantConflicts() const {
DCHECK(attached_shaders_[0].get() &&
attached_shaders_[0]->shader_type() == GL_VERTEX_SHADER &&
attached_shaders_[1].get() &&
attached_shaders_[1]->shader_type() == GL_FRAGMENT_SHADER);
const VaryingMap& vertex_varyings = attached_shaders_[0]->varying_map();
const VaryingMap& fragment_varyings = attached_shaders_[1]->varying_map();
bool gl_position_invariant = IsBuiltInInvariant(
vertex_varyings, "gl_Position");
bool gl_point_size_invariant = IsBuiltInInvariant(
vertex_varyings, "gl_PointSize");
bool gl_frag_coord_invariant = IsBuiltInInvariant(
fragment_varyings, "gl_FragCoord");
bool gl_point_coord_invariant = IsBuiltInInvariant(
fragment_varyings, "gl_PointCoord");
return ((gl_frag_coord_invariant && !gl_position_invariant) ||
(gl_point_coord_invariant && !gl_point_size_invariant));
}
bool Program::DetectGlobalNameConflicts(std::string* conflicting_name) const {
DCHECK(attached_shaders_[0].get() &&
attached_shaders_[0]->shader_type() == GL_VERTEX_SHADER &&
attached_shaders_[1].get() &&
attached_shaders_[1]->shader_type() == GL_FRAGMENT_SHADER);
const UniformMap* uniforms[2];
uniforms[0] = &(attached_shaders_[0]->uniform_map());
uniforms[1] = &(attached_shaders_[1]->uniform_map());
const AttributeMap* attribs =
&(attached_shaders_[0]->attrib_map());
for (const auto& key_value : *attribs) {
for (int ii = 0; ii < 2; ++ii) {
if (uniforms[ii]->find(key_value.first) != uniforms[ii]->end()) {
*conflicting_name = key_value.first;
return true;
}
}
}
return false;
}
bool Program::CheckVaryingsPacking(
Program::VaryingsPackingOption option) const {
DCHECK(attached_shaders_[0].get() &&
attached_shaders_[0]->shader_type() == GL_VERTEX_SHADER &&
attached_shaders_[1].get() &&
attached_shaders_[1]->shader_type() == GL_FRAGMENT_SHADER);
const VaryingMap* vertex_varyings = &(attached_shaders_[0]->varying_map());
const VaryingMap* fragment_varyings = &(attached_shaders_[1]->varying_map());
std::map<std::string, const sh::ShaderVariable*> combined_map;
for (const auto& key_value : *fragment_varyings) {
if (!key_value.second.staticUse && option == kCountOnlyStaticallyUsed)
continue;
if (!IsBuiltInFragmentVarying(key_value.first)) {
VaryingMap::const_iterator vertex_iter =
vertex_varyings->find(key_value.first);
if (vertex_iter == vertex_varyings->end() ||
(!vertex_iter->second.staticUse &&
option == kCountOnlyStaticallyUsed))
continue;
}
combined_map[key_value.first] = &key_value.second;
}
if (combined_map.size() == 0)
return true;
std::vector<sh::ShaderVariable> variables;
for (const auto& key_value : combined_map) {
variables.push_back(*key_value.second);
}
return ShCheckVariablesWithinPackingLimits(
static_cast<int>(manager_->max_varying_vectors()),
variables);
}
void Program::GetProgramInfo(
ProgramManager* manager, CommonDecoder::Bucket* bucket) const {
// NOTE: It seems to me the math in here does not need check for overflow
// because the data being calucated from has various small limits. The max
// number of attribs + uniforms is somewhere well under 1024. The maximum size
// of an identifier is 256 characters.
uint32_t num_locations = 0;
uint32_t total_string_size = 0;
for (size_t ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& info = attrib_infos_[ii];
num_locations += 1;
total_string_size += info.name.size();
}
for (const UniformInfo& info : uniform_infos_) {
num_locations += info.element_locations.size();
total_string_size += info.name.size();
}
uint32_t num_inputs = attrib_infos_.size() + uniform_infos_.size();
uint32_t input_size = num_inputs * sizeof(ProgramInput);
uint32_t location_size = num_locations * sizeof(int32_t);
uint32_t size = sizeof(ProgramInfoHeader) + input_size + location_size +
total_string_size;
bucket->SetSize(size);
ProgramInfoHeader* header = bucket->GetDataAs<ProgramInfoHeader*>(0, size);
ProgramInput* inputs = bucket->GetDataAs<ProgramInput*>(
sizeof(ProgramInfoHeader), input_size);
int32_t* locations = bucket->GetDataAs<int32_t*>(
sizeof(ProgramInfoHeader) + input_size, location_size);
char* strings = bucket->GetDataAs<char*>(
sizeof(ProgramInfoHeader) + input_size + location_size,
total_string_size);
DCHECK(header);
DCHECK(inputs);
DCHECK(locations);
DCHECK(strings);
header->link_status = link_status_;
header->num_attribs = attrib_infos_.size();
header->num_uniforms = uniform_infos_.size();
for (size_t ii = 0; ii < attrib_infos_.size(); ++ii) {
const VertexAttrib& info = attrib_infos_[ii];
inputs->size = info.size;
inputs->type = info.type;
inputs->location_offset = ComputeOffset(header, locations);
inputs->name_offset = ComputeOffset(header, strings);
inputs->name_length = info.name.size();
*locations++ = info.location;
memcpy(strings, info.name.c_str(), info.name.size());
strings += info.name.size();
++inputs;
}
for (const UniformInfo& info : uniform_infos_) {
inputs->size = info.size;
inputs->type = info.type;
inputs->location_offset = ComputeOffset(header, locations);
inputs->name_offset = ComputeOffset(header, strings);
inputs->name_length = info.name.size();
DCHECK(static_cast<size_t>(info.size) == info.element_locations.size());
for (size_t jj = 0; jj < info.element_locations.size(); ++jj) {
if (info.element_locations[jj] == -1)
*locations++ = -1;
else
*locations++ =
ProgramManager::MakeFakeLocation(info.fake_location_base, jj);
}
memcpy(strings, info.name.c_str(), info.name.size());
strings += info.name.size();
++inputs;
}
// NOTE: currently we do not pass inactive uniform binding locations
// through the program info call.
// NOTE: currently we do not pass fragment input infos through the program
// info call, because they are not exposed through any getter function.
DCHECK_EQ(ComputeOffset(header, strings), size);
}
bool Program::GetUniformBlocks(CommonDecoder::Bucket* bucket) const {
// The data is packed into the bucket in the following order
// 1) header
// 2) N entries of block data (except for name and indices)
// 3) name1, indices1, name2, indices2, ..., nameN, indicesN
//
// We query all the data directly through GL calls, assuming they are
// cheap through MANGLE.
DCHECK(bucket);
GLuint program = service_id();
uint32_t header_size = sizeof(UniformBlocksHeader);
bucket->SetSize(header_size); // In case we fail.
uint32_t num_uniform_blocks = 0;
GLint param = GL_FALSE;
// We assume program is a valid program service id.
glGetProgramiv(program, GL_LINK_STATUS, &param);
if (param == GL_TRUE) {
param = 0;
glGetProgramiv(program, GL_ACTIVE_UNIFORM_BLOCKS, &param);
num_uniform_blocks = static_cast<uint32_t>(param);
}
if (num_uniform_blocks == 0) {
// Although spec allows an implementation to return uniform block info
// even if a link fails, for consistency, we disallow that.
return true;
}
std::vector<UniformBlockInfo> blocks(num_uniform_blocks);
base::CheckedNumeric<uint32_t> size = sizeof(UniformBlockInfo);
size *= num_uniform_blocks;
uint32_t entry_size = size.ValueOrDefault(0);
size += header_size;
std::vector<std::string> names(num_uniform_blocks);
GLint max_name_length = 0;
glGetProgramiv(
program, GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH, &max_name_length);
std::vector<GLchar> buffer(max_name_length);
GLsizei length;
for (uint32_t ii = 0; ii < num_uniform_blocks; ++ii) {
param = 0;
glGetActiveUniformBlockiv(program, ii, GL_UNIFORM_BLOCK_BINDING, &param);
blocks[ii].binding = static_cast<uint32_t>(param);
param = 0;
glGetActiveUniformBlockiv(program, ii, GL_UNIFORM_BLOCK_DATA_SIZE, &param);
blocks[ii].data_size = static_cast<uint32_t>(param);
blocks[ii].name_offset = size.ValueOrDefault(0);
param = 0;
glGetActiveUniformBlockiv(
program, ii, GL_UNIFORM_BLOCK_NAME_LENGTH, &param);
DCHECK_GE(max_name_length, param);
memset(&buffer[0], 0, param);
length = 0;
glGetActiveUniformBlockName(
program, ii, static_cast<GLsizei>(param), &length, &buffer[0]);
DCHECK_EQ(param, length + 1);
names[ii] = std::string(&buffer[0], length);
// TODO(zmo): optimize the name mapping lookup.
size_t pos = names[ii].find_first_of('[');
const std::string* original_name;
std::string array_index_str = "";
if (pos != std::string::npos) {
original_name = GetOriginalNameFromHashedName(names[ii].substr(0, pos));
array_index_str = names[ii].substr(pos);
} else {
original_name = GetOriginalNameFromHashedName(names[ii]);
}
if (original_name)
names[ii] = *original_name + array_index_str;
blocks[ii].name_length = names[ii].size() + 1;
size += blocks[ii].name_length;
param = 0;
glGetActiveUniformBlockiv(
program, ii, GL_UNIFORM_BLOCK_ACTIVE_UNIFORMS, &param);
blocks[ii].active_uniforms = static_cast<uint32_t>(param);
blocks[ii].active_uniform_offset = size.ValueOrDefault(0);
base::CheckedNumeric<uint32_t> indices_size = blocks[ii].active_uniforms;
indices_size *= sizeof(uint32_t);
if (!indices_size.IsValid())
return false;
size += indices_size.ValueOrDefault(0);
param = 0;
glGetActiveUniformBlockiv(
program, ii, GL_UNIFORM_BLOCK_REFERENCED_BY_VERTEX_SHADER, &param);
blocks[ii].referenced_by_vertex_shader = static_cast<uint32_t>(param);
param = 0;
glGetActiveUniformBlockiv(
program, ii, GL_UNIFORM_BLOCK_REFERENCED_BY_FRAGMENT_SHADER, &param);
blocks[ii].referenced_by_fragment_shader = static_cast<uint32_t>(param);
}
if (!size.IsValid())
return false;
uint32_t total_size = size.ValueOrDefault(0);
DCHECK_LE(header_size + entry_size, total_size);
uint32_t data_size = total_size - header_size - entry_size;
bucket->SetSize(total_size);
UniformBlocksHeader* header =
bucket->GetDataAs<UniformBlocksHeader*>(0, header_size);
UniformBlockInfo* entries = bucket->GetDataAs<UniformBlockInfo*>(
header_size, entry_size);
char* data = bucket->GetDataAs<char*>(header_size + entry_size, data_size);
DCHECK(header);
DCHECK(entries);
DCHECK(data);
// Copy over data for the header and entries.
header->num_uniform_blocks = num_uniform_blocks;
memcpy(entries, &blocks[0], entry_size);
std::vector<GLint> params;
for (uint32_t ii = 0; ii < num_uniform_blocks; ++ii) {
// Get active uniform name.
memcpy(data, names[ii].c_str(), names[ii].length() + 1);
data += names[ii].length() + 1;
// Get active uniform indices.
if (params.size() < blocks[ii].active_uniforms)
params.resize(blocks[ii].active_uniforms);
uint32_t num_bytes = blocks[ii].active_uniforms * sizeof(GLint);
memset(&params[0], 0, num_bytes);
glGetActiveUniformBlockiv(
program, ii, GL_UNIFORM_BLOCK_ACTIVE_UNIFORM_INDICES, &params[0]);
uint32_t* indices = reinterpret_cast<uint32_t*>(data);
for (uint32_t uu = 0; uu < blocks[ii].active_uniforms; ++uu) {
indices[uu] = static_cast<uint32_t>(params[uu]);
}
data += num_bytes;
}
DCHECK_EQ(ComputeOffset(header, data), total_size);
return true;
}
bool Program::GetTransformFeedbackVaryings(
CommonDecoder::Bucket* bucket) const {
// The data is packed into the bucket in the following order
// 1) header
// 2) N entries of varying data (except for name)
// 3) name1, name2, ..., nameN
//
// We query all the data directly through GL calls, assuming they are
// cheap through MANGLE.
DCHECK(bucket);
GLuint program = service_id();
uint32_t header_size = sizeof(TransformFeedbackVaryingsHeader);
bucket->SetSize(header_size); // In case we fail.
GLenum transform_feedback_buffer_mode = 0;
GLint param = 0;
glGetProgramiv(program, GL_TRANSFORM_FEEDBACK_BUFFER_MODE, &param);
transform_feedback_buffer_mode = static_cast<GLenum>(param);
uint32_t num_transform_feedback_varyings = 0;
param = GL_FALSE;
// We assume program is a valid program service id.
glGetProgramiv(program, GL_LINK_STATUS, &param);
if (param == GL_TRUE) {
param = 0;
glGetProgramiv(program, GL_TRANSFORM_FEEDBACK_VARYINGS, &param);
num_transform_feedback_varyings = static_cast<uint32_t>(param);
}
if (num_transform_feedback_varyings == 0) {
TransformFeedbackVaryingsHeader* header =
bucket->GetDataAs<TransformFeedbackVaryingsHeader*>(0, header_size);
header->transform_feedback_buffer_mode = transform_feedback_buffer_mode;
return true;
}
std::vector<TransformFeedbackVaryingInfo> varyings(
num_transform_feedback_varyings);
base::CheckedNumeric<uint32_t> size = sizeof(TransformFeedbackVaryingInfo);
size *= num_transform_feedback_varyings;
uint32_t entry_size = size.ValueOrDefault(0);
size += header_size;
std::vector<std::string> names(num_transform_feedback_varyings);
GLint max_name_length = 0;
glGetProgramiv(
program, GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH, &max_name_length);
if (max_name_length < 1)
max_name_length = 1;
std::vector<char> buffer(max_name_length);
for (uint32_t ii = 0; ii < num_transform_feedback_varyings; ++ii) {
GLsizei var_size = 0;
GLsizei var_name_length = 0;
GLenum var_type = 0;
glGetTransformFeedbackVarying(
program, ii, max_name_length,
&var_name_length, &var_size, &var_type, &buffer[0]);
varyings[ii].size = static_cast<uint32_t>(var_size);
varyings[ii].type = static_cast<uint32_t>(var_type);
varyings[ii].name_offset = static_cast<uint32_t>(size.ValueOrDefault(0));
DCHECK_GT(max_name_length, var_name_length);
names[ii] = std::string(&buffer[0], var_name_length);
// TODO(zmo): optimize the name mapping lookup.
const std::string* original_name = GetOriginalNameFromHashedName(names[ii]);
if (original_name)
names[ii] = *original_name;
varyings[ii].name_length = names[ii].size() + 1;
size += names[ii].size();
size += 1;
}
if (!size.IsValid())
return false;
uint32_t total_size = size.ValueOrDefault(0);
DCHECK_LE(header_size + entry_size, total_size);
uint32_t data_size = total_size - header_size - entry_size;
bucket->SetSize(total_size);
TransformFeedbackVaryingsHeader* header =
bucket->GetDataAs<TransformFeedbackVaryingsHeader*>(0, header_size);
TransformFeedbackVaryingInfo* entries =
bucket->GetDataAs<TransformFeedbackVaryingInfo*>(header_size, entry_size);
char* data = bucket->GetDataAs<char*>(header_size + entry_size, data_size);
DCHECK(header);
DCHECK(entries);
DCHECK(data);
// Copy over data for the header and entries.
header->transform_feedback_buffer_mode = transform_feedback_buffer_mode;
header->num_transform_feedback_varyings = num_transform_feedback_varyings;
memcpy(entries, &varyings[0], entry_size);
for (uint32_t ii = 0; ii < num_transform_feedback_varyings; ++ii) {
memcpy(data, names[ii].c_str(), names[ii].length() + 1);
data += names[ii].length() + 1;
}
DCHECK_EQ(ComputeOffset(header, data), total_size);
return true;
}
bool Program::GetUniformsES3(CommonDecoder::Bucket* bucket) const {
// The data is packed into the bucket in the following order
// 1) header
// 2) N entries of UniformES3Info
//
// We query all the data directly through GL calls, assuming they are
// cheap through MANGLE.
DCHECK(bucket);
GLuint program = service_id();
uint32_t header_size = sizeof(UniformsES3Header);
bucket->SetSize(header_size); // In case we fail.
GLsizei count = 0;
GLint param = GL_FALSE;
// We assume program is a valid program service id.
glGetProgramiv(program, GL_LINK_STATUS, &param);
if (param == GL_TRUE) {
param = 0;
glGetProgramiv(program, GL_ACTIVE_UNIFORMS, &count);
}
if (count == 0) {
return true;
}
base::CheckedNumeric<uint32_t> size = sizeof(UniformES3Info);
size *= count;
uint32_t entry_size = size.ValueOrDefault(0);
size += header_size;
if (!size.IsValid())
return false;
uint32_t total_size = size.ValueOrDefault(0);
bucket->SetSize(total_size);
UniformsES3Header* header =
bucket->GetDataAs<UniformsES3Header*>(0, header_size);
DCHECK(header);
header->num_uniforms = static_cast<uint32_t>(count);
// Instead of GetDataAs<UniformES3Info*>, we do GetDataAs<int32_t>. This is
// because struct UniformES3Info is defined as five int32_t.
// By doing this, we can fill the structs through loops.
int32_t* entries =
bucket->GetDataAs<int32_t*>(header_size, entry_size);
DCHECK(entries);
const size_t kStride = sizeof(UniformES3Info) / sizeof(int32_t);
const GLenum kPname[] = {
GL_UNIFORM_BLOCK_INDEX,
GL_UNIFORM_OFFSET,
GL_UNIFORM_ARRAY_STRIDE,
GL_UNIFORM_MATRIX_STRIDE,
GL_UNIFORM_IS_ROW_MAJOR,
};
const GLint kDefaultValue[] = { -1, -1, -1, -1, 0 };
const size_t kNumPnames = arraysize(kPname);
std::vector<GLuint> indices(count);
for (GLsizei ii = 0; ii < count; ++ii) {
indices[ii] = ii;
}
std::vector<GLint> params(count);
for (size_t pname_index = 0; pname_index < kNumPnames; ++pname_index) {
for (GLsizei ii = 0; ii < count; ++ii) {
params[ii] = kDefaultValue[pname_index];
}
glGetActiveUniformsiv(
program, count, &indices[0], kPname[pname_index], &params[0]);
for (GLsizei ii = 0; ii < count; ++ii) {
entries[kStride * ii + pname_index] = params[ii];
}
}
return true;
}
const Program::ProgramOutputInfo* Program::GetProgramOutputInfo(
const std::string& name) const {
for (const auto& info : program_output_infos_) {
if (info.name == name) {
return &info;
}
}
return nullptr;
}
GLint Program::GetFragDataLocation(const std::string& original_name) const {
DCHECK(IsValid());
const ProgramOutputInfo* info = GetProgramOutputInfo(original_name);
if (!info)
info = GetProgramOutputInfo(original_name + "[0]");
if (!info)
return -1;
return info->color_name;
}
GLint Program::GetFragDataIndex(const std::string& original_name) const {
DCHECK(IsValid());
const ProgramOutputInfo* info = GetProgramOutputInfo(original_name);
if (!info)
info = GetProgramOutputInfo(original_name + "[0]");
if (!info)
return -1;
return info->index;
}
void Program::TransformFeedbackVaryings(GLsizei count,
const char* const* varyings,
GLenum buffer_mode) {
transform_feedback_varyings_.clear();
for (GLsizei i = 0; i < count; ++i) {
transform_feedback_varyings_.push_back(std::string(varyings[i]));
}
transform_feedback_buffer_mode_ = buffer_mode;
}
Program::~Program() {
if (manager_) {
if (manager_->have_context_) {
glDeleteProgram(service_id());
}
manager_->StopTracking(this);
manager_ = NULL;
}
}
ProgramManager::ProgramManager(
ProgramCache* program_cache,
uint32_t max_varying_vectors,
uint32_t max_draw_buffers,
uint32_t max_dual_source_draw_buffers,
uint32_t max_vertex_attribs,
const GpuPreferences& gpu_preferences,
FeatureInfo* feature_info)
: program_count_(0),
have_context_(true),
program_cache_(program_cache),
max_varying_vectors_(max_varying_vectors),
max_draw_buffers_(max_draw_buffers),
max_dual_source_draw_buffers_(max_dual_source_draw_buffers),
max_vertex_attribs_(max_vertex_attribs),
gpu_preferences_(gpu_preferences),
feature_info_(feature_info) {}
ProgramManager::~ProgramManager() {
DCHECK(programs_.empty());
}
void ProgramManager::Destroy(bool have_context) {
have_context_ = have_context;
ProgramDeletionScopedUmaTimeAndRate scoped_histogram(
base::saturated_cast<int32_t>(programs_.size()));
programs_.clear();
}
void ProgramManager::StartTracking(Program* /* program */) {
++program_count_;
}
void ProgramManager::StopTracking(Program* /* program */) {
--program_count_;
}
Program* ProgramManager::CreateProgram(
GLuint client_id, GLuint service_id) {
std::pair<ProgramMap::iterator, bool> result =
programs_.insert(
std::make_pair(client_id,
scoped_refptr<Program>(
new Program(this, service_id))));
DCHECK(result.second);
return result.first->second.get();
}
Program* ProgramManager::GetProgram(GLuint client_id) {
ProgramMap::iterator it = programs_.find(client_id);
return it != programs_.end() ? it->second.get() : NULL;
}
bool ProgramManager::GetClientId(GLuint service_id, GLuint* client_id) const {
// This doesn't need to be fast. It's only used during slow queries.
for (const auto& key_value : programs_) {
if (key_value.second->service_id() == service_id) {
*client_id = key_value.first;
return true;
}
}
return false;
}
ProgramCache* ProgramManager::program_cache() const {
return program_cache_;
}
bool ProgramManager::IsOwned(Program* program) const {
for (const auto& key_value : programs_) {
if (key_value.second.get() == program) {
return true;
}
}
return false;
}
void ProgramManager::RemoveProgramInfoIfUnused(
ShaderManager* shader_manager, Program* program) {
DCHECK(shader_manager);
DCHECK(program);
DCHECK(IsOwned(program));
if (program->IsDeleted() && !program->InUse()) {
program->DetachShaders(shader_manager);
for (ProgramMap::iterator it = programs_.begin();
it != programs_.end(); ++it) {
if (it->second.get() == program) {
programs_.erase(it);
return;
}
}
NOTREACHED();
}
}
void ProgramManager::MarkAsDeleted(
ShaderManager* shader_manager,
Program* program) {
DCHECK(shader_manager);
DCHECK(program);
DCHECK(IsOwned(program));
program->MarkAsDeleted();
RemoveProgramInfoIfUnused(shader_manager, program);
}
void ProgramManager::UseProgram(Program* program) {
DCHECK(program);
DCHECK(IsOwned(program));
program->IncUseCount();
}
void ProgramManager::UnuseProgram(
ShaderManager* shader_manager,
Program* program) {
DCHECK(shader_manager);
DCHECK(program);
DCHECK(IsOwned(program));
program->DecUseCount();
RemoveProgramInfoIfUnused(shader_manager, program);
}
void ProgramManager::ClearUniforms(Program* program) {
DCHECK(program);
program->ClearUniforms(&zero_);
}
int32_t ProgramManager::MakeFakeLocation(int32_t index, int32_t element) {
return index + element * 0x10000;
}
} // namespace gles2
} // namespace gpu