gpu/command_buffer/service/image_factory.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "gpu/command_buffer/service/image_factory.h"
   6
   7 #include "gpu/command_buffer/common/capabilities.h"
   8 #include "ui/gl/gl_bindings.h"
   9
  10 namespace gpu {
  11
  12 ImageFactory::ImageFactory() {
  13 }
  14
  15 ImageFactory::~ImageFactory() {
  16 }
  17
  18 // static
  19 gfx::BufferFormat ImageFactory::DefaultBufferFormatForImageFormat(
  20     unsigned internalformat) {
  21   switch (internalformat) {
  22     case GL_R8:
  23       return gfx::BufferFormat::R_8;
  24     case GL_RGB:
  25       return gfx::BufferFormat::BGRX_8888;
  26     case GL_RGBA:
  27       return gfx::BufferFormat::RGBA_8888;
  28     case GL_BGRA_EXT:
  29       return gfx::BufferFormat::BGRA_8888;
  30     case GL_ATC_RGB_AMD:
  31       return gfx::BufferFormat::ATC;
  32     case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD:
  33       return gfx::BufferFormat::ATCIA;
  34     case GL_COMPRESSED_RGB_S3TC_DXT1_EXT:
  35       return gfx::BufferFormat::DXT1;
  36     case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT:
  37       return gfx::BufferFormat::DXT5;
  38     case GL_ETC1_RGB8_OES:
  39       return gfx::BufferFormat::ETC1;
  40     case GL_RGB_YUV_420_CHROMIUM:
  41       return gfx::BufferFormat::YUV_420;
  42     case GL_RGB_YCBCR_422_CHROMIUM:
  43       return gfx::BufferFormat::UYVY_422;
  44     default:
  45       NOTREACHED();
  46       return gfx::BufferFormat::RGBA_8888;
  47   }
  48 }
  49
  50 // static
  51 gfx::BufferUsage ImageFactory::ImageUsageToGpuMemoryBufferUsage(
  52     unsigned usage) {
  53   switch (usage) {
  54     case GL_MAP_CHROMIUM:
  55       return gfx::BufferUsage::MAP;
  56     case GL_SCANOUT_CHROMIUM:
  57       return gfx::BufferUsage::SCANOUT;
  58     default:
  59       NOTREACHED();
  60       return gfx::BufferUsage::MAP;
  61   }
  62 }
  63
  64 // static
  65 bool ImageFactory::IsImageFormatCompatibleWithGpuMemoryBufferFormat(
  66     unsigned internalformat,
  67     gfx::BufferFormat format) {
  68   switch (format) {
  69     case gfx::BufferFormat::ATC:
  70     case gfx::BufferFormat::ATCIA:
  71     case gfx::BufferFormat::BGRA_8888:
  72     case gfx::BufferFormat::BGRX_8888:
  73     case gfx::BufferFormat::DXT1:
  74     case gfx::BufferFormat::DXT5:
  75     case gfx::BufferFormat::ETC1:
  76     case gfx::BufferFormat::R_8:
  77     case gfx::BufferFormat::RGBA_8888:
  78     case gfx::BufferFormat::YUV_420:
  79     case gfx::BufferFormat::YUV_420_BIPLANAR:
  80     case gfx::BufferFormat::UYVY_422:
  81       return format == DefaultBufferFormatForImageFormat(internalformat);
  82     case gfx::BufferFormat::RGBA_4444:
  83       return internalformat == GL_RGBA;
  84   }
  85
  86   NOTREACHED();
  87   return false;
  88 }
  89
  90 // static
  91 bool ImageFactory::IsGpuMemoryBufferFormatSupported(
  92     gfx::BufferFormat format,
  93     const gpu::Capabilities& capabilities) {
  94   switch (format) {
  95     case gfx::BufferFormat::ATC:
  96     case gfx::BufferFormat::ATCIA:
  97       return capabilities.texture_format_atc;
  98     case gfx::BufferFormat::BGRA_8888:
  99       return capabilities.texture_format_bgra8888;
 100     case gfx::BufferFormat::DXT1:
 101       return capabilities.texture_format_dxt1;
 102     case gfx::BufferFormat::DXT5:
 103       return capabilities.texture_format_dxt5;
 104     case gfx::BufferFormat::ETC1:
 105       return capabilities.texture_format_etc1;
 106     case gfx::BufferFormat::R_8:
 107       return capabilities.texture_rg;
 108     case gfx::BufferFormat::UYVY_422:
 109       return capabilities.image_ycbcr_422;
 110     case gfx::BufferFormat::RGBA_4444:
 111     case gfx::BufferFormat::RGBA_8888:
 112     case gfx::BufferFormat::BGRX_8888:
 113     case gfx::BufferFormat::YUV_420:
 114       return true;
 115     case gfx::BufferFormat::YUV_420_BIPLANAR:
 116       return false;
 117   }
 118
 119   NOTREACHED();
 120   return false;
 121 }
 122
 123 // static
 124 bool ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat(
 125     const gfx::Size& size,
 126     gfx::BufferFormat format) {
 127   switch (format) {
 128     case gfx::BufferFormat::ATC:
 129     case gfx::BufferFormat::ATCIA:
 130     case gfx::BufferFormat::DXT1:
 131     case gfx::BufferFormat::DXT5:
 132     case gfx::BufferFormat::ETC1:
 133       // Compressed images must have a width and height that's evenly divisible
 134       // by the block size.
 135       return size.width() % 4 == 0 && size.height() % 4 == 0;
 136     case gfx::BufferFormat::R_8:
 137     case gfx::BufferFormat::RGBA_4444:
 138     case gfx::BufferFormat::RGBA_8888:
 139     case gfx::BufferFormat::BGRA_8888:
 140     case gfx::BufferFormat::BGRX_8888:
 141       return true;
 142     case gfx::BufferFormat::YUV_420:
 143     case gfx::BufferFormat::YUV_420_BIPLANAR:
 144       // U and V planes are subsampled by a factor of 2.
 145       return size.width() % 2 == 0 && size.height() % 2 == 0;
 146     case gfx::BufferFormat::UYVY_422:
 147       return size.width() % 2 == 0;
 148   }
 149
 150   NOTREACHED();
 151   return false;
 152 }
 153
 154 }  // namespace gpu