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chromium / chromium / src / 70aa692d68ee86d365928edd160c3575fda2b453 / . / gpu / command_buffer / service / program_manager.cc
blob: b9a38351721dabe62772e65197d08c3d89d83439 [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 <algorithm>
#include <set>
#include <utility>
#include <vector>
#include "base/basictypes.h"
#include "base/command_line.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/metrics/histogram.h"
#include "base/numerics/safe_math.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.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/gles2_cmd_decoder.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "gpu/command_buffer/service/program_cache.h"
#include "gpu/command_buffer/service/shader_manager.h"
#include "third_party/re2/re2/re2.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[name.size() - 1] != ']') {
*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 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 ComputeOffset(const void* start, const void* position) {
return static_cast<const uint8*>(position) -
static_cast<const uint8*>(start);
}
} // anonymous namespace.
Program::UniformInfo::UniformInfo()
: size(0),
type(GL_NONE),
fake_location_base(0),
is_array(false) {
}
Program::UniformInfo::UniformInfo(GLsizei _size,
GLenum _type,
int _fake_location_base,
const std::string& _name)
: size(_size),
type(_type),
accepts_api_type(0),
fake_location_base(_fake_location_base),
is_array(false),
name(_name) {
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_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;
}
}
Program::UniformInfo::~UniformInfo() {}
bool ProgramManager::IsInvalidPrefix(const char* name, size_t length) {
static const char kInvalidPrefix[] = { 'g', 'l', '_' };
return (length >= sizeof(kInvalidPrefix) &&
memcmp(name, kInvalidPrefix, sizeof(kInvalidPrefix)) == 0);
}
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),
num_uniforms_(0),
transform_feedback_buffer_mode_(GL_NONE) {
manager_->StartTracking(this);
}
void Program::Reset() {
valid_ = false;
link_status_ = false;
num_uniforms_ = 0;
max_uniform_name_length_ = 0;
max_attrib_name_length_ = 0;
attrib_infos_.clear();
uniform_infos_.clear();
sampler_indices_.clear();
attrib_location_to_index_map_.clear();
}
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(NULL);
return;
}
scoped_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);
set_log_info(ProcessLogInfo(log).c_str());
}
void Program::ClearUniforms(
std::vector<uint8>* zero_buffer) {
DCHECK(zero_buffer);
if (uniforms_cleared_) {
return;
}
uniforms_cleared_ = true;
for (size_t ii = 0; ii < uniform_infos_.size(); ++ii) {
const UniformInfo& uniform_info = uniform_infos_[ii];
if (!uniform_info.IsValid()) {
continue;
}
GLint location = uniform_info.element_locations[0];
GLsizei size = uniform_info.size;
uint32 unit_size =
GLES2Util::GetElementCountForUniformType(uniform_info.type) *
GLES2Util::GetElementSizeForUniformType(uniform_info.type);
DCHECK_LT(0u, unit_size);
uint32 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;
}
}
}
namespace {
struct UniformData {
UniformData() : size(-1), type(GL_NONE), location(0), added(false) {
}
std::string queried_name;
std::string corrected_name;
std::string original_name;
GLsizei size;
GLenum type;
GLint location;
bool added;
};
struct UniformDataComparer {
bool operator()(const UniformData& lhs, const UniformData& rhs) const {
return lhs.queried_name < rhs.queried_name;
}
};
} // anonymous namespace
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?
scoped_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];
attrib_location_to_index_map_[info.location] = ii;
}
#if !defined(NDEBUG)
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableGPUServiceLoggingGPU)) {
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;
}
}
#endif
max_len = 0;
GLint num_uniforms = 0;
glGetProgramiv(service_id_, GL_ACTIVE_UNIFORMS, &num_uniforms);
glGetProgramiv(service_id_, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max_len);
name_buffer.reset(new char[max_len]);
// Reads all the names.
std::vector<UniformData> uniform_data;
for (GLint ii = 0; ii < num_uniforms; ++ii) {
GLsizei length = 0;
UniformData data;
glGetActiveUniform(
service_id_, ii, max_len, &length,
&data.size, &data.type, name_buffer.get());
DCHECK(max_len == 0 || length < max_len);
DCHECK(length == 0 || name_buffer[length] == '\0');
data.queried_name = std::string(name_buffer.get());
GetCorrectedUniformData(data.queried_name, &data.corrected_name,
&data.original_name, &data.size, &data.type);
uniform_data.push_back(data);
}
// NOTE: We don't care if 2 uniforms are bound to the same location.
// One of them will take preference. The spec allows this, same as
// BindAttribLocation.
//
// The reason we don't check is if we were to fail we'd have to
// restore the previous program but since we've already linked successfully
// at this point the previous program is gone.
// Assigns the uniforms with bindings.
size_t next_available_index = 0;
for (size_t ii = 0; ii < uniform_data.size(); ++ii) {
UniformData& data = uniform_data[ii];
// Force builtin uniforms (gl_DepthRange) to have invalid location.
if (ProgramManager::IsInvalidPrefix(data.queried_name.c_str(),
data.queried_name.size())) {
data.location = -1;
} else {
data.location =
glGetUniformLocation(service_id_, data.queried_name.c_str());
}
// remove "[0]"
std::string short_name;
int element_index = 0;
bool good = GetUniformNameSansElement(data.queried_name, &element_index,
&short_name);
DCHECK(good);
LocationMap::const_iterator it = bind_uniform_location_map_.find(
short_name);
if (it != bind_uniform_location_map_.end()) {
AddUniformInfo(
data.size, data.type, data.location, it->second, data.corrected_name,
data.original_name, &next_available_index);
data.added = true;
}
}
// Assigns the uniforms that were not bound.
for (size_t ii = 0; ii < uniform_data.size(); ++ii) {
const UniformData& data = uniform_data[ii];
if (!data.added) {
AddUniformInfo(
data.size, data.type, data.location, -1, data.corrected_name,
data.original_name, &next_available_index);
}
}
#if !defined(NDEBUG)
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableGPUServiceLoggingGPU)) {
DVLOG(1) << "----: uniforms for service_id: " << service_id();
for (size_t ii = 0; ii < uniform_infos_.size(); ++ii) {
const UniformInfo& info = uniform_infos_[ii];
if (info.IsValid()) {
DVLOG(1) << ii << ": loc = " << info.element_locations[0]
<< ", size = " << info.size
<< ", type = " << GLES2Util::GetStringEnum(info.type)
<< ", name = " << info.name;
}
}
}
#endif
valid_ = true;
}
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;
}
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 (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 (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;
}
before_time = TimeTicks::Now();
if (cache && gfx::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) {
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()),
0,
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()),
0,
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 {
bool getting_array_location = false;
size_t open_pos = std::string::npos;
int index = 0;
if (!GLES2Util::ParseUniformName(
name, &open_pos, &index, &getting_array_location)) {
return -1;
}
for (GLuint ii = 0; ii < uniform_infos_.size(); ++ii) {
const UniformInfo& info = uniform_infos_[ii];
if (!info.IsValid()) {
continue;
}
if (info.name == name ||
(info.is_array &&
info.name.compare(0, info.name.size() - 3, name) == 0)) {
return info.fake_location_base;
} else if (getting_array_location && info.is_array) {
// Look for an array specification.
size_t open_pos_2 = info.name.find_last_of('[');
if (open_pos_2 == open_pos &&
name.compare(0, open_pos, info.name, 0, open_pos) == 0) {
if (index >= 0 && 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 NULL;
}
GLint uniform_index = GetUniformInfoIndexFromFakeLocation(fake_location);
if (uniform_index >= 0 &&
static_cast<size_t>(uniform_index) < uniform_infos_.size()) {
const UniformInfo& uniform_info = uniform_infos_[uniform_index];
if (!uniform_info.IsValid()) {
return NULL;
}
GLint element_index = GetArrayElementIndexFromFakeLocation(fake_location);
if (element_index < uniform_info.size) {
*real_location = uniform_info.element_locations[element_index];
*array_index = element_index;
return &uniform_info;
}
}
return NULL;
}
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;
}
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;
}
// Note: This is only valid to call right after a program has been linked
// successfully.
void Program::GetCorrectedUniformData(
const std::string& name,
std::string* corrected_name, std::string* original_name,
GLsizei* size, GLenum* type) const {
DCHECK(corrected_name && original_name && size && type);
for (auto shader : attached_shaders_) {
if (!shader)
continue;
const sh::ShaderVariable* info = NULL;
const sh::Uniform* uniform = shader->GetUniformInfo(name);
bool found = false;
if (uniform)
found = uniform->findInfoByMappedName(name, &info, original_name);
if (found) {
const std::string kArraySpec("[0]");
if (info->arraySize > 0 &&
!base::EndsWith(name, kArraySpec, base::CompareCase::SENSITIVE)) {
*corrected_name = name + kArraySpec;
*original_name += kArraySpec;
} else {
*corrected_name = name;
}
*type = info->type;
*size = std::max(1u, info->arraySize);
return;
}
}
// TODO(zmo): this path should never be reached unless there is a serious
// bug in the driver or in ANGLE translator.
*corrected_name = name;
*original_name = name;
}
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;
}
void Program::AddUniformInfo(
GLsizei size, GLenum type, GLint location, GLint fake_base_location,
const std::string& name, const std::string& original_name,
size_t* next_available_index) {
DCHECK(next_available_index);
const char* kArraySpec = "[0]";
size_t uniform_index =
fake_base_location >= 0 ? fake_base_location : *next_available_index;
if (uniform_infos_.size() < uniform_index + 1) {
uniform_infos_.resize(uniform_index + 1);
}
// Before linking, we already validated that no two statically used uniforms
// are bound to the same location.
DCHECK(!uniform_infos_[uniform_index].IsValid());
uniform_infos_[uniform_index] = UniformInfo(
size, type, uniform_index, original_name);
++num_uniforms_;
UniformInfo& info = uniform_infos_[uniform_index];
info.element_locations.resize(size);
info.element_locations[0] = location;
DCHECK_GE(size, 0);
size_t num_texture_units = info.IsSampler() ? static_cast<size_t>(size) : 0u;
info.texture_units.clear();
info.texture_units.resize(num_texture_units, 0);
if (size > 1) {
// Go through the array element locations looking for a match.
// We can skip the first element because it's the same as the
// the location without the array operators.
size_t array_pos = name.rfind(kArraySpec);
std::string base_name = name;
if (name.size() > 3) {
if (array_pos != name.size() - 3) {
info.name = name + kArraySpec;
} else {
base_name = name.substr(0, name.size() - 3);
}
}
for (GLsizei ii = 1; ii < info.size; ++ii) {
std::string element_name(base_name + "[" + base::IntToString(ii) + "]");
info.element_locations[ii] =
glGetUniformLocation(service_id_, element_name.c_str());
}
}
info.is_array =
(size > 1 ||
(info.name.size() > 3 &&
info.name.rfind(kArraySpec) == info.name.size() - 3));
if (info.IsSampler()) {
sampler_indices_.push_back(info.fake_location_base);
}
max_uniform_name_length_ =
std::max(max_uniform_name_length_,
static_cast<GLsizei>(info.name.size()));
while (*next_available_index < uniform_infos_.size() &&
uniform_infos_[*next_available_index].IsValid()) {
*next_available_index = *next_available_index + 1;
}
}
const Program::UniformInfo*
Program::GetUniformInfo(
GLint index) const {
if (static_cast<size_t>(index) >= uniform_infos_.size()) {
return NULL;
}
const UniformInfo& info = uniform_infos_[index];
return info.IsValid() ? &info : NULL;
}
bool Program::SetSamplers(
GLint num_texture_units, GLint fake_location,
GLsizei count, const GLint* value) {
if (fake_location < 0) {
return true;
}
GLint uniform_index = GetUniformInfoIndexFromFakeLocation(fake_location);
if (uniform_index >= 0 &&
static_cast<size_t>(uniform_index) < uniform_infos_.size()) {
UniformInfo& info = uniform_infos_[uniform_index];
if (!info.IsValid()) {
return false;
}
GLint element_index = GetArrayElementIndexFromFakeLocation(fake_location);
if (element_index < info.size) {
count = std::min(info.size - 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 = num_uniforms_;
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::DetachShader(
ShaderManager* shader_manager,
Shader* shader) {
DCHECK(shader_manager);
DCHECK(shader);
if (attached_shaders_[ShaderTypeToIndex(shader->shader_type())].get() !=
shader) {
return false;
}
attached_shaders_[ShaderTypeToIndex(shader->shader_type())] = NULL;
shader_manager->UnuseShader(shader);
return true;
}
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::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::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, ShVariableInfo> 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;
}
ShVariableInfo var;
var.type = static_cast<sh::GLenum>(key_value.second.type);
var.size = std::max(1u, key_value.second.arraySize);
combined_map[key_value.first] = var;
}
if (combined_map.size() == 0)
return true;
scoped_ptr<ShVariableInfo[]> variables(
new ShVariableInfo[combined_map.size()]);
size_t index = 0;
for (const auto& key_value : combined_map) {
variables[index].type = key_value.second.type;
variables[index].size = key_value.second.size;
++index;
}
return ShCheckVariablesWithinPackingLimits(
static_cast<int>(manager_->max_varying_vectors()),
variables.get(),
combined_map.size());
}
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 num_locations = 0;
uint32 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 (size_t ii = 0; ii < uniform_infos_.size(); ++ii) {
const UniformInfo& info = uniform_infos_[ii];
if (info.IsValid()) {
num_locations += info.element_locations.size();
total_string_size += info.name.size();
}
}
uint32 num_inputs = attrib_infos_.size() + num_uniforms_;
uint32 input_size = num_inputs * sizeof(ProgramInput);
uint32 location_size = num_locations * sizeof(int32);
uint32 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* locations = bucket->GetDataAs<int32*>(
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 = num_uniforms_;
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 (size_t ii = 0; ii < uniform_infos_.size(); ++ii) {
const UniformInfo& info = uniform_infos_[ii];
if (info.IsValid()) {
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(ii, jj);
}
memcpy(strings, info.name.c_str(), info.name.size());
strings += info.name.size();
++inputs;
}
}
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.
const std::string* original_name = GetOriginalNameFromHashedName(names[ii]);
if (original_name)
names[ii] = *original_name;
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;
}
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 max_varying_vectors)
: program_count_(0),
have_context_(true),
program_cache_(program_cache),
max_varying_vectors_(max_varying_vectors) { }
ProgramManager::~ProgramManager() {
DCHECK(programs_.empty());
}
void ProgramManager::Destroy(bool have_context) {
have_context_ = have_context;
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 ProgramManager::MakeFakeLocation(int32 index, int32 element) {
return index + element * 0x10000;
}
} // namespace gles2
} // namespace gpu