| // 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/gles2_cmd_copy_texture_chromium.h" |
| |
| #include <stddef.h> |
| |
| #include <algorithm> |
| |
| #include "gpu/command_buffer/service/gl_utils.h" |
| #include "gpu/command_buffer/service/gles2_cmd_copy_tex_image.h" |
| #include "gpu/command_buffer/service/gles2_cmd_decoder.h" |
| #include "gpu/command_buffer/service/texture_manager.h" |
| #include "ui/gl/gl_version_info.h" |
| |
| namespace { |
| |
| const GLfloat kIdentityMatrix[16] = {1.0f, 0.0f, 0.0f, 0.0f, |
| 0.0f, 1.0f, 0.0f, 0.0f, |
| 0.0f, 0.0f, 1.0f, 0.0f, |
| 0.0f, 0.0f, 0.0f, 1.0f}; |
| |
| enum { |
| SAMPLER_2D, |
| SAMPLER_RECTANGLE_ARB, |
| SAMPLER_EXTERNAL_OES, |
| NUM_SAMPLERS |
| }; |
| |
| enum { |
| S_FORMAT_ALPHA, |
| S_FORMAT_LUMINANCE, |
| S_FORMAT_LUMINANCE_ALPHA, |
| S_FORMAT_RED, |
| S_FORMAT_RGB, |
| S_FORMAT_RGBA, |
| S_FORMAT_RGB8, |
| S_FORMAT_RGBA8, |
| S_FORMAT_BGRA_EXT, |
| S_FORMAT_BGRA8_EXT, |
| S_FORMAT_RGB_YCBCR_420V_CHROMIUM, |
| S_FORMAT_RGB_YCBCR_422_CHROMIUM, |
| S_FORMAT_COMPRESSED, |
| NUM_S_FORMAT |
| }; |
| |
| enum { |
| D_FORMAT_RGB, |
| D_FORMAT_RGBA, |
| D_FORMAT_RGB8, |
| D_FORMAT_RGBA8, |
| D_FORMAT_BGRA_EXT, |
| D_FORMAT_BGRA8_EXT, |
| D_FORMAT_SRGB_EXT, |
| D_FORMAT_SRGB_ALPHA_EXT, |
| D_FORMAT_R8, |
| D_FORMAT_R8UI, |
| D_FORMAT_RG8, |
| D_FORMAT_RG8UI, |
| D_FORMAT_SRGB8, |
| D_FORMAT_RGB565, |
| D_FORMAT_RGB8UI, |
| D_FORMAT_SRGB8_ALPHA8, |
| D_FORMAT_RGB5_A1, |
| D_FORMAT_RGBA4, |
| D_FORMAT_RGBA8UI, |
| D_FORMAT_RGB9_E5, |
| D_FORMAT_R16F, |
| D_FORMAT_R32F, |
| D_FORMAT_RG16F, |
| D_FORMAT_RG32F, |
| D_FORMAT_RGB16F, |
| D_FORMAT_RGB32F, |
| D_FORMAT_RGBA16F, |
| D_FORMAT_RGBA32F, |
| D_FORMAT_R11F_G11F_B10F, |
| D_FORMAT_RGB10_A2, |
| NUM_D_FORMAT |
| }; |
| |
| const unsigned kNumVertexShaders = NUM_SAMPLERS; |
| const unsigned kNumFragmentShaders = |
| 4 * NUM_SAMPLERS * NUM_S_FORMAT * NUM_D_FORMAT; |
| |
| typedef unsigned ShaderId; |
| |
| ShaderId GetVertexShaderId(GLenum target) { |
| ShaderId id = 0; |
| switch (target) { |
| case GL_TEXTURE_2D: |
| id = SAMPLER_2D; |
| break; |
| case GL_TEXTURE_RECTANGLE_ARB: |
| id = SAMPLER_RECTANGLE_ARB; |
| break; |
| case GL_TEXTURE_EXTERNAL_OES: |
| id = SAMPLER_EXTERNAL_OES; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| return id; |
| } |
| |
| // Returns the correct fragment shader id to evaluate the copy operation for |
| // the premultiply alpha pixel store settings and target. |
| ShaderId GetFragmentShaderId(bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| GLenum target, |
| GLenum source_format, |
| GLenum dest_format) { |
| unsigned alphaIndex = 0; |
| unsigned targetIndex = 0; |
| unsigned sourceFormatIndex = 0; |
| unsigned destFormatIndex = 0; |
| |
| alphaIndex = (premultiply_alpha ? (1 << 0) : 0) | |
| (unpremultiply_alpha ? (1 << 1) : 0); |
| |
| switch (target) { |
| case GL_TEXTURE_2D: |
| targetIndex = SAMPLER_2D; |
| break; |
| case GL_TEXTURE_RECTANGLE_ARB: |
| targetIndex = SAMPLER_RECTANGLE_ARB; |
| break; |
| case GL_TEXTURE_EXTERNAL_OES: |
| targetIndex = SAMPLER_EXTERNAL_OES; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| switch (source_format) { |
| case GL_ALPHA: |
| sourceFormatIndex = S_FORMAT_ALPHA; |
| break; |
| case GL_LUMINANCE: |
| sourceFormatIndex = S_FORMAT_LUMINANCE; |
| break; |
| case GL_LUMINANCE_ALPHA: |
| sourceFormatIndex = S_FORMAT_LUMINANCE_ALPHA; |
| break; |
| case GL_RED: |
| case GL_R16_EXT: |
| sourceFormatIndex = S_FORMAT_RED; |
| break; |
| case GL_RGB: |
| sourceFormatIndex = S_FORMAT_RGB; |
| break; |
| case GL_RGBA: |
| sourceFormatIndex = S_FORMAT_RGBA; |
| break; |
| case GL_RGB8: |
| sourceFormatIndex = S_FORMAT_RGB8; |
| break; |
| case GL_RGBA8: |
| sourceFormatIndex = S_FORMAT_RGBA8; |
| break; |
| case GL_BGRA_EXT: |
| sourceFormatIndex = S_FORMAT_BGRA_EXT; |
| break; |
| case GL_BGRA8_EXT: |
| sourceFormatIndex = S_FORMAT_BGRA8_EXT; |
| break; |
| case GL_RGB_YCBCR_420V_CHROMIUM: |
| sourceFormatIndex = S_FORMAT_RGB_YCBCR_420V_CHROMIUM; |
| break; |
| case GL_RGB_YCBCR_422_CHROMIUM: |
| sourceFormatIndex = S_FORMAT_RGB_YCBCR_422_CHROMIUM; |
| break; |
| case GL_ATC_RGB_AMD: |
| case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD: |
| case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| case GL_ETC1_RGB8_OES: |
| sourceFormatIndex = S_FORMAT_COMPRESSED; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| switch (dest_format) { |
| case GL_RGB: |
| destFormatIndex = D_FORMAT_RGB; |
| break; |
| case GL_RGBA: |
| destFormatIndex = D_FORMAT_RGBA; |
| break; |
| case GL_RGB8: |
| destFormatIndex = D_FORMAT_RGB8; |
| break; |
| case GL_RGBA8: |
| destFormatIndex = D_FORMAT_RGBA8; |
| break; |
| case GL_BGRA_EXT: |
| destFormatIndex = D_FORMAT_BGRA_EXT; |
| break; |
| case GL_BGRA8_EXT: |
| destFormatIndex = D_FORMAT_BGRA8_EXT; |
| break; |
| case GL_SRGB_EXT: |
| destFormatIndex = D_FORMAT_SRGB_EXT; |
| break; |
| case GL_SRGB_ALPHA_EXT: |
| destFormatIndex = D_FORMAT_SRGB_ALPHA_EXT; |
| break; |
| case GL_R8: |
| destFormatIndex = D_FORMAT_R8; |
| break; |
| case GL_R8UI: |
| destFormatIndex = D_FORMAT_R8UI; |
| break; |
| case GL_RG8: |
| destFormatIndex = D_FORMAT_RG8; |
| break; |
| case GL_RG8UI: |
| destFormatIndex = D_FORMAT_RG8UI; |
| break; |
| case GL_SRGB8: |
| destFormatIndex = D_FORMAT_SRGB8; |
| break; |
| case GL_RGB565: |
| destFormatIndex = D_FORMAT_RGB565; |
| break; |
| case GL_RGB8UI: |
| destFormatIndex = D_FORMAT_RGB8UI; |
| break; |
| case GL_SRGB8_ALPHA8: |
| destFormatIndex = D_FORMAT_SRGB8_ALPHA8; |
| break; |
| case GL_RGB5_A1: |
| destFormatIndex = D_FORMAT_RGB5_A1; |
| break; |
| case GL_RGBA4: |
| destFormatIndex = D_FORMAT_RGBA4; |
| break; |
| case GL_RGBA8UI: |
| destFormatIndex = D_FORMAT_RGBA8UI; |
| break; |
| case GL_RGB9_E5: |
| destFormatIndex = D_FORMAT_RGB9_E5; |
| break; |
| case GL_R16F: |
| destFormatIndex = D_FORMAT_R16F; |
| break; |
| case GL_R32F: |
| destFormatIndex = D_FORMAT_R32F; |
| break; |
| case GL_RG16F: |
| destFormatIndex = D_FORMAT_RG16F; |
| break; |
| case GL_RG32F: |
| destFormatIndex = D_FORMAT_RG32F; |
| break; |
| case GL_RGB16F: |
| destFormatIndex = D_FORMAT_RGB16F; |
| break; |
| case GL_RGB32F: |
| destFormatIndex = D_FORMAT_RGB32F; |
| break; |
| case GL_RGBA16F: |
| destFormatIndex = D_FORMAT_RGBA16F; |
| break; |
| case GL_RGBA32F: |
| destFormatIndex = D_FORMAT_RGBA32F; |
| break; |
| case GL_R11F_G11F_B10F: |
| destFormatIndex = D_FORMAT_R11F_G11F_B10F; |
| break; |
| case GL_RGB10_A2: |
| destFormatIndex = D_FORMAT_RGB10_A2; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| return alphaIndex + targetIndex * 4 + sourceFormatIndex * 4 * NUM_SAMPLERS + |
| destFormatIndex * 4 * NUM_SAMPLERS * NUM_S_FORMAT; |
| } |
| |
| const char* kShaderPrecisionPreamble = |
| "#ifdef GL_ES\n" |
| "precision mediump float;\n" |
| "#ifdef GL_FRAGMENT_PRECISION_HIGH\n" |
| "#define TexCoordPrecision highp\n" |
| "#else\n" |
| "#define TexCoordPrecision mediump\n" |
| "#endif\n" |
| "#else\n" |
| "#define TexCoordPrecision\n" |
| "#endif\n"; |
| |
| std::string GetVertexShaderSource(const gl::GLVersionInfo& gl_version_info, |
| GLenum target) { |
| std::string source; |
| |
| if (gl_version_info.is_es || gl_version_info.IsLowerThanGL(3, 2)) { |
| if (gl_version_info.is_es3 && target != GL_TEXTURE_EXTERNAL_OES) { |
| source += "#version 300 es\n"; |
| source += |
| "#define ATTRIBUTE in\n" |
| "#define VARYING out\n"; |
| } else { |
| source += |
| "#define ATTRIBUTE attribute\n" |
| "#define VARYING varying\n"; |
| } |
| } else { |
| source += "#version 150\n"; |
| source += |
| "#define ATTRIBUTE in\n" |
| "#define VARYING out\n"; |
| } |
| |
| // Preamble for texture precision. |
| source += kShaderPrecisionPreamble; |
| |
| // Main shader source. |
| source += |
| "uniform vec2 u_vertex_dest_mult;\n" |
| "uniform vec2 u_vertex_dest_add;\n" |
| "uniform vec2 u_vertex_source_mult;\n" |
| "uniform vec2 u_vertex_source_add;\n" |
| "ATTRIBUTE vec2 a_position;\n" |
| "VARYING TexCoordPrecision vec2 v_uv;\n" |
| "void main(void) {\n" |
| " gl_Position = vec4(0, 0, 0, 1);\n" |
| " gl_Position.xy =\n" |
| " a_position.xy * u_vertex_dest_mult + u_vertex_dest_add;\n" |
| " v_uv = a_position.xy * u_vertex_source_mult + u_vertex_source_add;\n" |
| "}\n"; |
| |
| return source; |
| } |
| |
| std::string GetFragmentShaderSource(const gl::GLVersionInfo& gl_version_info, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| bool nv_egl_stream_consumer_external, |
| GLenum target, |
| GLenum source_format, |
| GLenum dest_format) { |
| std::string source; |
| |
| // Preamble for core and compatibility mode. |
| if (gl_version_info.is_es || gl_version_info.IsLowerThanGL(3, 2)) { |
| if (gl_version_info.is_es3 && target != GL_TEXTURE_EXTERNAL_OES) { |
| source += "#version 300 es\n"; |
| } |
| if (target == GL_TEXTURE_EXTERNAL_OES) { |
| source += "#extension GL_OES_EGL_image_external : enable\n"; |
| |
| if (nv_egl_stream_consumer_external) { |
| source += "#extension GL_NV_EGL_stream_consumer_external : enable\n"; |
| } |
| } |
| } else { |
| source += "#version 150\n"; |
| } |
| |
| // Preamble for texture precision. |
| source += kShaderPrecisionPreamble; |
| |
| // According to the spec, |dest_format| can be unsigned integer format, float |
| // format or unsigned normalized fixed-point format. |source_format| can only |
| // be unsigned normalized fixed-point format. |
| if (gpu::gles2::GLES2Util::IsUnsignedIntegerFormat(dest_format)) { |
| source += "#define TextureType uvec4\n"; |
| source += "#define ZERO 0u\n"; |
| source += "#define MAX_COLOR 255u\n"; |
| source += "#define ScaleValue 255.0\n"; |
| } else { |
| DCHECK(!gpu::gles2::GLES2Util::IsIntegerFormat(dest_format)); |
| source += "#define TextureType vec4\n"; |
| source += "#define ZERO 0.0\n"; |
| source += "#define MAX_COLOR 1.0\n"; |
| source += "#define ScaleValue 1.0\n"; |
| } |
| if (gl_version_info.is_es2 || gl_version_info.IsLowerThanGL(3, 2) || |
| target == GL_TEXTURE_EXTERNAL_OES) { |
| switch (target) { |
| case GL_TEXTURE_2D: |
| case GL_TEXTURE_EXTERNAL_OES: |
| source += "#define TextureLookup texture2D\n"; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| source += |
| "#define VARYING varying\n" |
| "#define FRAGCOLOR gl_FragColor\n"; |
| } else { |
| source += |
| "#define VARYING in\n" |
| "out TextureType frag_color;\n" |
| "#define FRAGCOLOR frag_color\n" |
| "#define TextureLookup texture\n"; |
| } |
| |
| // Preamble for sampler type. |
| switch (target) { |
| case GL_TEXTURE_2D: |
| source += "#define SamplerType sampler2D\n"; |
| break; |
| case GL_TEXTURE_RECTANGLE_ARB: |
| source += "#define SamplerType sampler2DRect\n"; |
| break; |
| case GL_TEXTURE_EXTERNAL_OES: |
| source += "#define SamplerType samplerExternalOES\n"; |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| // Main shader source. |
| source += |
| "uniform SamplerType u_sampler;\n" |
| "uniform mat4 u_tex_coord_transform;\n" |
| "VARYING TexCoordPrecision vec2 v_uv;\n" |
| "void main(void) {\n" |
| " TexCoordPrecision vec4 uv =\n" |
| " u_tex_coord_transform * vec4(v_uv, 0, 1);\n" |
| " vec4 color = TextureLookup(u_sampler, uv.st);\n"; |
| |
| // Premultiply or un-premultiply alpha. Must always do this, even |
| // if the destination format doesn't have an alpha channel. |
| if (premultiply_alpha) { |
| source += " color.rgb *= color.a;\n"; |
| } else if (unpremultiply_alpha) { |
| source += " if (color.a > 0.0) {\n"; |
| source += " color.rgb /= color.a;\n"; |
| source += " }\n"; |
| } |
| |
| source += " FRAGCOLOR = TextureType(color * ScaleValue);\n"; |
| |
| // Main function end. |
| source += "}\n"; |
| |
| return source; |
| } |
| |
| GLenum getIntermediateFormat(GLenum format) { |
| switch (format) { |
| case GL_LUMINANCE_ALPHA: |
| case GL_LUMINANCE: |
| case GL_ALPHA: |
| return GL_RGBA; |
| case GL_SRGB_EXT: |
| return GL_SRGB_ALPHA_EXT; |
| case GL_RGB16F: |
| return GL_RGBA16F; |
| case GL_RGB9_E5: |
| case GL_RGB32F: |
| return GL_RGBA32F; |
| case GL_SRGB8: |
| return GL_SRGB8_ALPHA8; |
| case GL_RGB8UI: |
| return GL_RGBA8UI; |
| default: |
| return format; |
| } |
| } |
| |
| void CompileShader(GLuint shader, const char* shader_source) { |
| glShaderSource(shader, 1, &shader_source, 0); |
| glCompileShader(shader); |
| #if DCHECK_IS_ON() |
| { |
| GLint compile_status; |
| glGetShaderiv(shader, GL_COMPILE_STATUS, &compile_status); |
| if (GL_TRUE != compile_status) { |
| char buffer[1024]; |
| GLsizei length = 0; |
| glGetShaderInfoLog(shader, sizeof(buffer), &length, buffer); |
| std::string log(buffer, length); |
| DLOG(ERROR) << "CopyTextureCHROMIUM: shader compilation failure: " << log; |
| } |
| } |
| #endif |
| } |
| |
| void DeleteShader(GLuint shader) { |
| if (shader) |
| glDeleteShader(shader); |
| } |
| |
| bool BindFramebufferTexture2D(GLenum target, |
| GLuint texture_id, |
| GLint level, |
| GLuint framebuffer) { |
| DCHECK(target == GL_TEXTURE_2D || target == GL_TEXTURE_RECTANGLE_ARB); |
| glActiveTexture(GL_TEXTURE0); |
| glBindTexture(target, texture_id); |
| // NVidia drivers require texture settings to be a certain way |
| // or they won't report FRAMEBUFFER_COMPLETE. |
| if (level > 0) |
| glTexParameteri(target, GL_TEXTURE_BASE_LEVEL, level); |
| glTexParameterf(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterf(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, framebuffer); |
| glFramebufferTexture2DEXT(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, target, |
| texture_id, level); |
| |
| #ifndef NDEBUG |
| GLenum fb_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER); |
| if (GL_FRAMEBUFFER_COMPLETE != fb_status) { |
| DLOG(ERROR) << "CopyTextureCHROMIUM: Incomplete framebuffer."; |
| return false; |
| } |
| #endif |
| return true; |
| } |
| |
| void DoCopyTexImage2D( |
| const gpu::gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_internal_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLsizei width, |
| GLsizei height, |
| GLuint framebuffer, |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| DCHECK_EQ(static_cast<GLenum>(GL_TEXTURE_2D), source_target); |
| GLenum dest_binding_target = |
| gpu::gles2::GLES2Util::GLFaceTargetToTextureTarget(dest_target); |
| DCHECK(dest_binding_target == GL_TEXTURE_2D || |
| dest_binding_target == GL_TEXTURE_CUBE_MAP); |
| DCHECK(source_level == 0 || decoder->GetFeatureInfo()->IsES3Capable()); |
| if (BindFramebufferTexture2D(source_target, source_id, source_level, |
| framebuffer)) { |
| glBindTexture(dest_binding_target, dest_id); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| // The blitter will only be non-null if we're on the desktop core |
| // profile. Use it only if it's needed. |
| if (luma_emulation_blitter && |
| gpu::gles2::CopyTexImageResourceManager::CopyTexImageRequiresBlit( |
| decoder->GetFeatureInfo(), dest_internal_format)) { |
| luma_emulation_blitter->DoCopyTexImage2DToLUMACompatibilityTexture( |
| decoder, dest_id, dest_binding_target, dest_target, |
| dest_internal_format, |
| gpu::gles2::TextureManager::ExtractTypeFromStorageFormat( |
| dest_internal_format), |
| dest_level, dest_internal_format, 0 /* x */, 0 /* y */, width, height, |
| framebuffer, source_internal_format); |
| } else { |
| glCopyTexImage2D(dest_target, dest_level, dest_internal_format, 0 /* x */, |
| 0 /* y */, width, height, 0 /* border */); |
| } |
| } |
| |
| decoder->RestoreTextureState(source_id); |
| decoder->RestoreTextureState(dest_id); |
| decoder->RestoreTextureUnitBindings(0); |
| decoder->RestoreActiveTexture(); |
| decoder->RestoreFramebufferBindings(); |
| } |
| |
| void DoCopyTexSubImage2D( |
| const gpu::gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_internal_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLint xoffset, |
| GLint yoffset, |
| GLint source_x, |
| GLint source_y, |
| GLsizei source_width, |
| GLsizei source_height, |
| GLuint framebuffer, |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| DCHECK(source_target == GL_TEXTURE_2D || |
| source_target == GL_TEXTURE_RECTANGLE_ARB); |
| GLenum dest_binding_target = |
| gpu::gles2::GLES2Util::GLFaceTargetToTextureTarget(dest_target); |
| DCHECK(dest_binding_target == GL_TEXTURE_2D || |
| dest_binding_target == GL_TEXTURE_CUBE_MAP); |
| DCHECK(source_level == 0 || decoder->GetFeatureInfo()->IsES3Capable()); |
| if (BindFramebufferTexture2D(source_target, source_id, source_level, |
| framebuffer)) { |
| glBindTexture(dest_binding_target, dest_id); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| // The blitter will only be non-null if we're on the desktop core |
| // profile. Use it only if it's needed. |
| if (luma_emulation_blitter && |
| gpu::gles2::CopyTexImageResourceManager::CopyTexImageRequiresBlit( |
| decoder->GetFeatureInfo(), dest_internal_format)) { |
| luma_emulation_blitter->DoCopyTexSubImageToLUMACompatibilityTexture( |
| decoder, dest_id, dest_binding_target, dest_target, |
| dest_internal_format, |
| gpu::gles2::TextureManager::ExtractTypeFromStorageFormat( |
| dest_internal_format), |
| dest_level, xoffset, yoffset, 0 /* zoffset */, source_x, source_y, |
| source_width, source_height, framebuffer, source_internal_format); |
| } else { |
| glCopyTexSubImage2D(dest_target, dest_level, xoffset, yoffset, source_x, |
| source_y, source_width, source_height); |
| } |
| } |
| |
| decoder->RestoreTextureState(source_id); |
| decoder->RestoreTextureState(dest_id); |
| decoder->RestoreTextureUnitBindings(0); |
| decoder->RestoreActiveTexture(); |
| decoder->RestoreFramebufferBindings(); |
| } |
| |
| // Convert RGBA/UNSIGNED_BYTE source to RGB/UNSIGNED_BYTE destination. |
| void convertToRGB(const uint8_t* source, |
| uint8_t* destination, |
| unsigned length) { |
| for (unsigned i = 0; i < length; ++i) { |
| destination[0] = source[0]; |
| destination[1] = source[1]; |
| destination[2] = source[2]; |
| source += 4; |
| destination += 3; |
| } |
| } |
| |
| // Convert RGBA/UNSIGNED_BYTE source to RGB/FLOAT destination. |
| void convertToRGBFloat(const uint8_t* source, |
| float* destination, |
| unsigned length) { |
| const float scaleFactor = 1.0f / 255.0f; |
| for (unsigned i = 0; i < length; ++i) { |
| destination[0] = source[0] * scaleFactor; |
| destination[1] = source[1] * scaleFactor; |
| destination[2] = source[2] * scaleFactor; |
| source += 4; |
| destination += 3; |
| } |
| } |
| |
| // Prepare the image data to be uploaded to a texture in pixel unpack buffer. |
| void prepareUnpackBuffer(GLuint buffer[2], |
| bool is_es, |
| GLenum format, |
| GLenum type, |
| GLsizei width, |
| GLsizei height) { |
| uint32_t pixel_num = width * height; |
| |
| // Result of glReadPixels with format == GL_RGB and type == GL_UNSIGNED_BYTE |
| // from read framebuffer in RGBA fromat is not correct on desktop core |
| // profile on both Linux Mesa and Linux NVIDIA. This may be a driver bug. |
| bool is_rgb_unsigned_byte = format == GL_RGB && type == GL_UNSIGNED_BYTE; |
| if ((!is_es && !is_rgb_unsigned_byte) || |
| (format == GL_RGBA && type == GL_UNSIGNED_BYTE)) { |
| uint32_t bytes_per_group = |
| gpu::gles2::GLES2Util::ComputeImageGroupSize(format, type); |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, buffer[0]); |
| glBufferData(GL_PIXEL_PACK_BUFFER, pixel_num * bytes_per_group, 0, |
| GL_STATIC_READ); |
| glReadPixels(0, 0, width, height, format, type, 0); |
| glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer[0]); |
| return; |
| } |
| |
| uint32_t bytes_per_group = |
| gpu::gles2::GLES2Util::ComputeImageGroupSize(GL_RGBA, GL_UNSIGNED_BYTE); |
| uint32_t buf_size = pixel_num * bytes_per_group; |
| |
| if (format == GL_RGB && type == GL_FLOAT) { |
| #if defined(OS_ANDROID) |
| // Reading pixels to pbo with glReadPixels will cause random failures of |
| // GLCopyTextureCHROMIUMES3Test.FormatCombinations in gl_tests. This is seen |
| // on Nexus 5 but not Nexus 4. Read pixels to client memory, then upload to |
| // pixel unpack buffer with glBufferData. |
| std::unique_ptr<uint8_t[]> pixels(new uint8_t[width * height * 4]); |
| glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, pixels.get()); |
| std::unique_ptr<float[]> data(new float[width * height * 3]); |
| convertToRGBFloat(pixels.get(), data.get(), pixel_num); |
| bytes_per_group = |
| gpu::gles2::GLES2Util::ComputeImageGroupSize(format, type); |
| buf_size = pixel_num * bytes_per_group; |
| glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer[1]); |
| glBufferData(GL_PIXEL_UNPACK_BUFFER, buf_size, data.get(), GL_STATIC_DRAW); |
| #else |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, buffer[0]); |
| glBufferData(GL_PIXEL_PACK_BUFFER, buf_size, 0, GL_STATIC_READ); |
| glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, 0); |
| void* pixels = |
| glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, buf_size, GL_MAP_READ_BIT); |
| |
| glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer[1]); |
| bytes_per_group = |
| gpu::gles2::GLES2Util::ComputeImageGroupSize(format, type); |
| buf_size = pixel_num * bytes_per_group; |
| glBufferData(GL_PIXEL_UNPACK_BUFFER, buf_size, 0, GL_STATIC_DRAW); |
| void* data = |
| glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, buf_size, GL_MAP_WRITE_BIT); |
| convertToRGBFloat(static_cast<uint8_t*>(pixels), static_cast<float*>(data), |
| pixel_num); |
| glUnmapBuffer(GL_PIXEL_PACK_BUFFER); |
| glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER); |
| #endif |
| return; |
| } |
| |
| if (format == GL_RGB && type == GL_UNSIGNED_BYTE) { |
| glBindBuffer(GL_PIXEL_PACK_BUFFER, buffer[0]); |
| glBufferData(GL_PIXEL_PACK_BUFFER, buf_size, 0, GL_DYNAMIC_DRAW); |
| glReadPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, 0); |
| void* pixels = glMapBufferRange(GL_PIXEL_PACK_BUFFER, 0, buf_size, |
| GL_MAP_READ_BIT | GL_MAP_WRITE_BIT); |
| void* data = pixels; |
| convertToRGB((uint8_t*)pixels, (uint8_t*)data, pixel_num); |
| glUnmapBuffer(GL_PIXEL_PACK_BUFFER); |
| glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer[0]); |
| return; |
| } |
| |
| NOTREACHED(); |
| } |
| |
| enum TexImageCommandType { |
| kTexImage, |
| kTexSubImage, |
| }; |
| |
| void DoReadbackAndTexImage(TexImageCommandType command_type, |
| const gpu::gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLint xoffset, |
| GLint yoffset, |
| GLsizei width, |
| GLsizei height, |
| GLuint framebuffer) { |
| DCHECK_EQ(static_cast<GLenum>(GL_TEXTURE_2D), source_target); |
| GLenum dest_binding_target = |
| gpu::gles2::GLES2Util::GLFaceTargetToTextureTarget(dest_target); |
| DCHECK(dest_binding_target == GL_TEXTURE_2D || |
| dest_binding_target == GL_TEXTURE_CUBE_MAP); |
| DCHECK(source_level == 0 || decoder->GetFeatureInfo()->IsES3Capable()); |
| if (BindFramebufferTexture2D(source_target, source_id, source_level, |
| framebuffer)) { |
| glBindTexture(dest_binding_target, dest_id); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterf(dest_binding_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(dest_binding_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| GLenum format = GL_RGBA; |
| GLenum type = GL_UNSIGNED_BYTE; |
| switch (dest_internal_format) { |
| case GL_RGB9_E5: |
| format = GL_RGB; |
| type = GL_FLOAT; |
| break; |
| case GL_SRGB_EXT: |
| case GL_SRGB8: |
| format = GL_RGB; |
| break; |
| case GL_RGB5_A1: |
| case GL_SRGB_ALPHA_EXT: |
| case GL_SRGB8_ALPHA8: |
| break; |
| default: |
| NOTREACHED(); |
| break; |
| } |
| |
| // TODO(qiankun.miao@intel.com): PIXEL_PACK_BUFFER and PIXEL_UNPACK_BUFFER |
| // are not supported in ES2. |
| bool is_es = decoder->GetFeatureInfo()->gl_version_info().is_es; |
| DCHECK(!decoder->GetFeatureInfo()->gl_version_info().is_es2); |
| |
| uint32_t buffer_num = is_es && format == GL_RGB && type == GL_FLOAT ? 2 : 1; |
| GLuint buffer[2] = {0u}; |
| glGenBuffersARB(buffer_num, buffer); |
| prepareUnpackBuffer(buffer, is_es, format, type, width, height); |
| |
| if (command_type == kTexImage) { |
| glTexImage2D(dest_target, dest_level, dest_internal_format, width, height, |
| 0, format, type, 0); |
| } else { |
| glTexSubImage2D(dest_target, dest_level, xoffset, yoffset, width, height, |
| format, type, 0); |
| } |
| glDeleteBuffersARB(buffer_num, buffer); |
| } |
| |
| decoder->RestoreTextureState(source_id); |
| decoder->RestoreTextureState(dest_id); |
| decoder->RestoreTextureUnitBindings(0); |
| decoder->RestoreActiveTexture(); |
| decoder->RestoreFramebufferBindings(); |
| decoder->RestoreBufferBindings(); |
| } |
| |
| } // namespace |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| CopyTextureCHROMIUMResourceManager::CopyTextureCHROMIUMResourceManager() |
| : initialized_(false), |
| nv_egl_stream_consumer_external_(false), |
| vertex_shaders_(kNumVertexShaders, 0u), |
| fragment_shaders_(kNumFragmentShaders, 0u), |
| vertex_array_object_id_(0u), |
| buffer_id_(0u), |
| framebuffer_(0u) {} |
| |
| CopyTextureCHROMIUMResourceManager::~CopyTextureCHROMIUMResourceManager() { |
| // |buffer_id_| and |framebuffer_| can be not-null because when GPU context is |
| // lost, this class can be deleted without releasing resources like |
| // GLES2DecoderImpl. |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::Initialize( |
| const gles2::GLES2Decoder* decoder, |
| const gles2::FeatureInfo::FeatureFlags& feature_flags) { |
| static_assert( |
| kVertexPositionAttrib == 0u, |
| "kVertexPositionAttrib must be 0"); |
| DCHECK(!buffer_id_); |
| DCHECK(!vertex_array_object_id_); |
| DCHECK(!framebuffer_); |
| DCHECK(programs_.empty()); |
| |
| nv_egl_stream_consumer_external_ = |
| feature_flags.nv_egl_stream_consumer_external; |
| |
| if (feature_flags.native_vertex_array_object) { |
| glGenVertexArraysOES(1, &vertex_array_object_id_); |
| glBindVertexArrayOES(vertex_array_object_id_); |
| } |
| |
| // Initialize all of the GPU resources required to perform the copy. |
| glGenBuffersARB(1, &buffer_id_); |
| glBindBuffer(GL_ARRAY_BUFFER, buffer_id_); |
| const GLfloat kQuadVertices[] = {-1.0f, -1.0f, |
| 1.0f, -1.0f, |
| 1.0f, 1.0f, |
| -1.0f, 1.0f}; |
| glBufferData( |
| GL_ARRAY_BUFFER, sizeof(kQuadVertices), kQuadVertices, GL_STATIC_DRAW); |
| |
| glGenFramebuffersEXT(1, &framebuffer_); |
| |
| if (vertex_array_object_id_) { |
| glEnableVertexAttribArray(kVertexPositionAttrib); |
| glVertexAttribPointer(kVertexPositionAttrib, 2, GL_FLOAT, GL_FALSE, 0, 0); |
| decoder->RestoreAllAttributes(); |
| } |
| |
| decoder->RestoreBufferBindings(); |
| |
| initialized_ = true; |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::Destroy() { |
| if (!initialized_) |
| return; |
| |
| if (vertex_array_object_id_) { |
| glDeleteVertexArraysOES(1, &vertex_array_object_id_); |
| vertex_array_object_id_ = 0; |
| } |
| |
| glDeleteFramebuffersEXT(1, &framebuffer_); |
| framebuffer_ = 0; |
| |
| std::for_each( |
| vertex_shaders_.begin(), vertex_shaders_.end(), DeleteShader); |
| std::for_each( |
| fragment_shaders_.begin(), fragment_shaders_.end(), DeleteShader); |
| |
| for (ProgramMap::const_iterator it = programs_.begin(); it != programs_.end(); |
| ++it) { |
| const ProgramInfo& info = it->second; |
| glDeleteProgram(info.program); |
| } |
| |
| glDeleteBuffersARB(1, &buffer_id_); |
| buffer_id_ = 0; |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::DoCopyTexture( |
| const gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_internal_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLsizei width, |
| GLsizei height, |
| bool flip_y, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| CopyTextureMethod method, |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| if (method == DIRECT_COPY) { |
| DoCopyTexImage2D(decoder, source_target, source_id, source_level, |
| source_internal_format, dest_target, dest_id, dest_level, |
| dest_internal_format, width, height, framebuffer_, |
| luma_emulation_blitter); |
| return; |
| } |
| |
| // Draw to level 0 of an intermediate GL_TEXTURE_2D texture. |
| GLuint dest_texture = dest_id; |
| GLuint intermediate_texture = 0; |
| GLint original_dest_level = dest_level; |
| GLenum original_dest_target = dest_target; |
| GLenum original_internal_format = dest_internal_format; |
| if (method == DRAW_AND_COPY || method == DRAW_AND_READBACK) { |
| GLenum adjusted_internal_format = |
| method == DRAW_AND_READBACK |
| ? GL_RGBA |
| : getIntermediateFormat(dest_internal_format); |
| dest_target = GL_TEXTURE_2D; |
| glGenTextures(1, &intermediate_texture); |
| glBindTexture(dest_target, intermediate_texture); |
| GLenum format = TextureManager::ExtractFormatFromStorageFormat( |
| adjusted_internal_format); |
| GLenum type = |
| TextureManager::ExtractTypeFromStorageFormat(adjusted_internal_format); |
| |
| glTexImage2D(dest_target, 0, adjusted_internal_format, width, height, 0, |
| format, type, nullptr); |
| dest_texture = intermediate_texture; |
| dest_level = 0; |
| dest_internal_format = adjusted_internal_format; |
| } |
| // Use kIdentityMatrix if no transform passed in. |
| DoCopyTextureWithTransform(decoder, source_target, source_id, source_level, |
| source_internal_format, dest_target, dest_texture, |
| dest_level, dest_internal_format, width, height, |
| flip_y, premultiply_alpha, unpremultiply_alpha, |
| kIdentityMatrix, luma_emulation_blitter); |
| |
| if (method == DRAW_AND_COPY || method == DRAW_AND_READBACK) { |
| source_level = 0; |
| if (method == DRAW_AND_COPY) { |
| DoCopyTexImage2D(decoder, dest_target, intermediate_texture, source_level, |
| dest_internal_format, original_dest_target, dest_id, |
| original_dest_level, original_internal_format, width, |
| height, framebuffer_, luma_emulation_blitter); |
| } else if (method == DRAW_AND_READBACK) { |
| DoReadbackAndTexImage( |
| kTexImage, decoder, dest_target, intermediate_texture, source_level, |
| original_dest_target, dest_id, original_dest_level, |
| original_internal_format, 0, 0, width, height, framebuffer_); |
| } |
| glDeleteTextures(1, &intermediate_texture); |
| } |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::DoCopySubTexture( |
| const gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_internal_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLint xoffset, |
| GLint yoffset, |
| GLint x, |
| GLint y, |
| GLsizei width, |
| GLsizei height, |
| GLsizei dest_width, |
| GLsizei dest_height, |
| GLsizei source_width, |
| GLsizei source_height, |
| bool flip_y, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| CopyTextureMethod method, |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| if (method == DIRECT_COPY) { |
| DoCopyTexSubImage2D(decoder, source_target, source_id, source_level, |
| source_internal_format, dest_target, dest_id, |
| dest_level, dest_internal_format, xoffset, yoffset, x, |
| y, width, height, framebuffer_, luma_emulation_blitter); |
| return; |
| } |
| |
| // Draw to level 0 of an intermediate GL_TEXTURE_2D texture. |
| GLint dest_xoffset = xoffset; |
| GLint dest_yoffset = yoffset; |
| GLuint dest_texture = dest_id; |
| GLint original_dest_level = dest_level; |
| GLenum original_dest_target = dest_target; |
| GLuint intermediate_texture = 0; |
| GLenum original_internal_format = dest_internal_format; |
| if (method == DRAW_AND_COPY || method == DRAW_AND_READBACK) { |
| GLenum adjusted_internal_format = |
| method == DRAW_AND_READBACK |
| ? GL_RGBA |
| : getIntermediateFormat(dest_internal_format); |
| dest_target = GL_TEXTURE_2D; |
| glGenTextures(1, &intermediate_texture); |
| glBindTexture(dest_target, intermediate_texture); |
| GLenum format = TextureManager::ExtractFormatFromStorageFormat( |
| adjusted_internal_format); |
| GLenum type = |
| TextureManager::ExtractTypeFromStorageFormat(adjusted_internal_format); |
| |
| glTexImage2D(dest_target, 0, adjusted_internal_format, width, height, 0, |
| format, type, nullptr); |
| dest_texture = intermediate_texture; |
| dest_level = 0; |
| dest_internal_format = adjusted_internal_format; |
| dest_xoffset = 0; |
| dest_yoffset = 0; |
| dest_width = width; |
| dest_height = height; |
| } |
| |
| DoCopySubTextureWithTransform( |
| decoder, source_target, source_id, source_level, source_internal_format, |
| dest_target, dest_texture, dest_level, dest_internal_format, dest_xoffset, |
| dest_yoffset, x, y, width, height, dest_width, dest_height, source_width, |
| source_height, flip_y, premultiply_alpha, unpremultiply_alpha, |
| kIdentityMatrix, luma_emulation_blitter); |
| |
| if (method == DRAW_AND_COPY || method == DRAW_AND_READBACK) { |
| source_level = 0; |
| if (method == DRAW_AND_COPY) { |
| DoCopyTexSubImage2D(decoder, dest_target, intermediate_texture, |
| source_level, dest_internal_format, |
| original_dest_target, dest_id, original_dest_level, |
| original_internal_format, xoffset, yoffset, 0, 0, |
| width, height, framebuffer_, luma_emulation_blitter); |
| } else if (method == DRAW_AND_READBACK) { |
| DoReadbackAndTexImage(kTexSubImage, decoder, dest_target, |
| intermediate_texture, source_level, |
| original_dest_target, dest_id, original_dest_level, |
| original_internal_format, xoffset, yoffset, width, |
| height, framebuffer_); |
| } |
| glDeleteTextures(1, &intermediate_texture); |
| } |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::DoCopySubTextureWithTransform( |
| const gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_internal_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_internal_format, |
| GLint xoffset, |
| GLint yoffset, |
| GLint x, |
| GLint y, |
| GLsizei width, |
| GLsizei height, |
| GLsizei dest_width, |
| GLsizei dest_height, |
| GLsizei source_width, |
| GLsizei source_height, |
| bool flip_y, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| const GLfloat transform_matrix[16], |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| DoCopyTextureInternal( |
| decoder, source_target, source_id, source_level, source_internal_format, |
| dest_target, dest_id, dest_level, dest_internal_format, xoffset, yoffset, |
| x, y, width, height, dest_width, dest_height, source_width, source_height, |
| flip_y, premultiply_alpha, unpremultiply_alpha, transform_matrix, |
| luma_emulation_blitter); |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::DoCopyTextureWithTransform( |
| const gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_format, |
| GLsizei width, |
| GLsizei height, |
| bool flip_y, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| const GLfloat transform_matrix[16], |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| GLsizei dest_width = width; |
| GLsizei dest_height = height; |
| DoCopyTextureInternal( |
| decoder, source_target, source_id, source_level, source_format, |
| dest_target, dest_id, dest_level, dest_format, 0, 0, 0, 0, width, height, |
| dest_width, dest_height, width, height, flip_y, premultiply_alpha, |
| unpremultiply_alpha, transform_matrix, luma_emulation_blitter); |
| } |
| |
| void CopyTextureCHROMIUMResourceManager::DoCopyTextureInternal( |
| const gles2::GLES2Decoder* decoder, |
| GLenum source_target, |
| GLuint source_id, |
| GLint source_level, |
| GLenum source_format, |
| GLenum dest_target, |
| GLuint dest_id, |
| GLint dest_level, |
| GLenum dest_format, |
| GLint xoffset, |
| GLint yoffset, |
| GLint x, |
| GLint y, |
| GLsizei width, |
| GLsizei height, |
| GLsizei dest_width, |
| GLsizei dest_height, |
| GLsizei source_width, |
| GLsizei source_height, |
| bool flip_y, |
| bool premultiply_alpha, |
| bool unpremultiply_alpha, |
| const GLfloat transform_matrix[16], |
| gpu::gles2::CopyTexImageResourceManager* luma_emulation_blitter) { |
| DCHECK(source_target == GL_TEXTURE_2D || |
| source_target == GL_TEXTURE_RECTANGLE_ARB || |
| source_target == GL_TEXTURE_EXTERNAL_OES); |
| DCHECK(dest_target == GL_TEXTURE_2D || |
| dest_target == GL_TEXTURE_RECTANGLE_ARB); |
| DCHECK_GE(source_level, 0); |
| DCHECK_GE(dest_level, 0); |
| DCHECK_GE(xoffset, 0); |
| DCHECK_LE(xoffset + width, dest_width); |
| DCHECK_GE(yoffset, 0); |
| DCHECK_LE(yoffset + height, dest_height); |
| if (dest_width == 0 || dest_height == 0 || source_width == 0 || |
| source_height == 0) { |
| return; |
| } |
| |
| if (!initialized_) { |
| DLOG(ERROR) << "CopyTextureCHROMIUM: Uninitialized manager."; |
| return; |
| } |
| const gl::GLVersionInfo& gl_version_info = |
| decoder->GetFeatureInfo()->gl_version_info(); |
| |
| if (vertex_array_object_id_) { |
| glBindVertexArrayOES(vertex_array_object_id_); |
| } else { |
| if (!gl_version_info.is_desktop_core_profile) { |
| decoder->ClearAllAttributes(); |
| } |
| glEnableVertexAttribArray(kVertexPositionAttrib); |
| glBindBuffer(GL_ARRAY_BUFFER, buffer_id_); |
| glVertexAttribPointer(kVertexPositionAttrib, 2, GL_FLOAT, GL_FALSE, 0, 0); |
| } |
| |
| ShaderId vertex_shader_id = GetVertexShaderId(source_target); |
| DCHECK_LT(static_cast<size_t>(vertex_shader_id), vertex_shaders_.size()); |
| ShaderId fragment_shader_id = GetFragmentShaderId( |
| premultiply_alpha, unpremultiply_alpha, source_target, |
| source_format, dest_format); |
| DCHECK_LT(static_cast<size_t>(fragment_shader_id), fragment_shaders_.size()); |
| |
| ProgramMapKey key(fragment_shader_id); |
| ProgramInfo* info = &programs_[key]; |
| // Create program if necessary. |
| if (!info->program) { |
| info->program = glCreateProgram(); |
| GLuint* vertex_shader = &vertex_shaders_[vertex_shader_id]; |
| if (!*vertex_shader) { |
| *vertex_shader = glCreateShader(GL_VERTEX_SHADER); |
| std::string source = |
| GetVertexShaderSource(gl_version_info, source_target); |
| CompileShader(*vertex_shader, source.c_str()); |
| } |
| glAttachShader(info->program, *vertex_shader); |
| GLuint* fragment_shader = &fragment_shaders_[fragment_shader_id]; |
| if (!*fragment_shader) { |
| *fragment_shader = glCreateShader(GL_FRAGMENT_SHADER); |
| std::string source = GetFragmentShaderSource( |
| gl_version_info, premultiply_alpha, unpremultiply_alpha, |
| nv_egl_stream_consumer_external_, source_target, source_format, |
| dest_format); |
| CompileShader(*fragment_shader, source.c_str()); |
| } |
| glAttachShader(info->program, *fragment_shader); |
| glBindAttribLocation(info->program, kVertexPositionAttrib, "a_position"); |
| glLinkProgram(info->program); |
| |
| #if DCHECK_IS_ON() |
| { |
| GLint linked; |
| glGetProgramiv(info->program, GL_LINK_STATUS, &linked); |
| if (!linked) { |
| char buffer[1024]; |
| GLsizei length = 0; |
| glGetProgramInfoLog(info->program, sizeof(buffer), &length, buffer); |
| std::string log(buffer, length); |
| DLOG(ERROR) << "CopyTextureCHROMIUM: program link failure: " << log; |
| } |
| } |
| #endif |
| info->vertex_dest_mult_handle = |
| glGetUniformLocation(info->program, "u_vertex_dest_mult"); |
| info->vertex_dest_add_handle = |
| glGetUniformLocation(info->program, "u_vertex_dest_add"); |
| info->vertex_source_mult_handle = |
| glGetUniformLocation(info->program, "u_vertex_source_mult"); |
| info->vertex_source_add_handle = |
| glGetUniformLocation(info->program, "u_vertex_source_add"); |
| |
| info->tex_coord_transform_handle = |
| glGetUniformLocation(info->program, "u_tex_coord_transform"); |
| info->sampler_handle = glGetUniformLocation(info->program, "u_sampler"); |
| } |
| glUseProgram(info->program); |
| |
| glUniformMatrix4fv(info->tex_coord_transform_handle, 1, GL_FALSE, |
| transform_matrix); |
| |
| // Note: For simplicity, the calculations in this comment block use a single |
| // dimension. All calculations trivially extend to the x-y plane. |
| // The target subrange in the destination texture has coordinates |
| // [xoffset, xoffset + width]. The full destination texture has range |
| // [0, dest_width]. |
| // |
| // We want to find A and B such that: |
| // A * X + B = Y |
| // C * Y + D = Z |
| // |
| // where X = [-1, 1], Z = [xoffset, xoffset + width] |
| // and C, D satisfy the relationship C * [-1, 1] + D = [0, dest_width]. |
| // |
| // Math shows: |
| // C = D = dest_width / 2 |
| // Y = [(xoffset * 2 / dest_width) - 1, |
| // (xoffset + width) * 2 / dest_width) - 1] |
| // A = width / dest_width |
| // B = (xoffset * 2 + width - dest_width) / dest_width |
| glUniform2f(info->vertex_dest_mult_handle, width * 1.f / dest_width, |
| height * 1.f / dest_height); |
| glUniform2f(info->vertex_dest_add_handle, |
| (xoffset * 2.f + width - dest_width) / dest_width, |
| (yoffset * 2.f + height - dest_height) / dest_height); |
| |
| // Note: For simplicity, the calculations in this comment block use a single |
| // dimension. All calculations trivially extend to the x-y plane. |
| // The target subrange in the source texture has coordinates [x, x + width]. |
| // The full source texture has range [0, source_width]. We need to transform |
| // the subrange into texture space ([0, M]), assuming that [0, source_width] |
| // gets mapped to [0, M]. If source_target == GL_TEXTURE_RECTANGLE_ARB, M = |
| // source_width. Otherwise, M = 1. |
| // |
| // We want to find A and B such that: |
| // A * X + B = Y |
| // C * Y + D = Z |
| // |
| // where X = [-1, 1], Z = [x, x + width] |
| // and C, D satisfy the relationship C * [0, M] + D = [0, source_width]. |
| // |
| // Math shows: |
| // D = 0 |
| // C = source_width / M |
| // Y = [x * M / source_width, (x + width) * M / source_width] |
| // B = (x + w/2) * M / source_width |
| // A = (w/2) * M / source_width |
| // |
| // When flip_y is true, we run the same calcluation, but with Z = [x + width, |
| // x]. (I'm intentionally keeping the x-plane notation, although the |
| // calculation only gets applied to the y-plane). |
| // |
| // Math shows: |
| // D = 0 |
| // C = source_width / M |
| // Y = [(x + width) * M / source_width, x * M / source_width] |
| // B = (x + w/2) * M / source_width |
| // A = (-w/2) * M / source_width |
| // |
| // So everything is the same but the sign of A is flipped. |
| GLfloat m_x = source_target == GL_TEXTURE_RECTANGLE_ARB ? source_width : 1; |
| GLfloat m_y = source_target == GL_TEXTURE_RECTANGLE_ARB ? source_height : 1; |
| GLfloat sign_a = flip_y ? -1 : 1; |
| glUniform2f(info->vertex_source_mult_handle, width / 2.f * m_x / source_width, |
| height / 2.f * m_y / source_height * sign_a); |
| glUniform2f(info->vertex_source_add_handle, |
| (x + width / 2.f) * m_x / source_width, |
| (y + height / 2.f) * m_y / source_height); |
| |
| DCHECK(dest_level == 0 || decoder->GetFeatureInfo()->IsES3Capable()); |
| if (BindFramebufferTexture2D(dest_target, dest_id, dest_level, |
| framebuffer_)) { |
| #ifndef NDEBUG |
| // glValidateProgram of MACOSX validates FBO unlike other platforms, so |
| // glValidateProgram must be called after FBO binding. crbug.com/463439 |
| glValidateProgram(info->program); |
| GLint validation_status; |
| glGetProgramiv(info->program, GL_VALIDATE_STATUS, &validation_status); |
| if (GL_TRUE != validation_status) { |
| DLOG(ERROR) << "CopyTextureCHROMIUM: Invalid shader."; |
| return; |
| } |
| #endif |
| |
| glUniform1i(info->sampler_handle, 0); |
| |
| glBindTexture(source_target, source_id); |
| DCHECK(source_level == 0 || decoder->GetFeatureInfo()->IsES3Capable()); |
| if (source_level > 0) |
| glTexParameteri(source_target, GL_TEXTURE_BASE_LEVEL, source_level); |
| glTexParameterf(source_target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameterf(source_target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| glTexParameteri(source_target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| glTexParameteri(source_target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| |
| glDisable(GL_DEPTH_TEST); |
| glDisable(GL_STENCIL_TEST); |
| glDisable(GL_CULL_FACE); |
| glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); |
| glDepthMask(GL_FALSE); |
| glDisable(GL_BLEND); |
| |
| bool need_scissor = |
| xoffset || yoffset || width != dest_width || height != dest_height; |
| if (need_scissor) { |
| glEnable(GL_SCISSOR_TEST); |
| glScissor(xoffset, yoffset, width, height); |
| } else { |
| glDisable(GL_SCISSOR_TEST); |
| } |
| if (decoder->GetFeatureInfo()->feature_flags().ext_window_rectangles) { |
| glWindowRectanglesEXT(GL_EXCLUSIVE_EXT, 0, nullptr); |
| } |
| glViewport(0, 0, dest_width, dest_height); |
| glDrawArrays(GL_TRIANGLE_FAN, 0, 4); |
| } |
| |
| decoder->RestoreAllAttributes(); |
| decoder->RestoreTextureState(source_id); |
| decoder->RestoreTextureState(dest_id); |
| decoder->RestoreTextureUnitBindings(0); |
| decoder->RestoreActiveTexture(); |
| decoder->RestoreProgramBindings(); |
| decoder->RestoreBufferBindings(); |
| decoder->RestoreFramebufferBindings(); |
| decoder->RestoreGlobalState(); |
| } |
| |
| } // namespace gles2 |
| } // namespace gpu |
