| // Copyright 2014 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/image_factory.h" |
| |
| #include "gpu/command_buffer/common/capabilities.h" |
| #include "ui/gl/gl_bindings.h" |
| |
| namespace gpu { |
| |
| ImageFactory::ImageFactory() { |
| } |
| |
| ImageFactory::~ImageFactory() { |
| } |
| |
| // static |
| gfx::BufferFormat ImageFactory::DefaultBufferFormatForImageFormat( |
| unsigned internalformat) { |
| switch (internalformat) { |
| case GL_R8: |
| return gfx::BufferFormat::R_8; |
| case GL_RGB: |
| return gfx::BufferFormat::BGRX_8888; |
| case GL_RGBA: |
| return gfx::BufferFormat::RGBA_8888; |
| case GL_BGRA_EXT: |
| return gfx::BufferFormat::BGRA_8888; |
| case GL_ATC_RGB_AMD: |
| return gfx::BufferFormat::ATC; |
| case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD: |
| return gfx::BufferFormat::ATCIA; |
| case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| return gfx::BufferFormat::DXT1; |
| case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| return gfx::BufferFormat::DXT5; |
| case GL_ETC1_RGB8_OES: |
| return gfx::BufferFormat::ETC1; |
| case GL_RGB_YUV_420_CHROMIUM: |
| return gfx::BufferFormat::YUV_420; |
| case GL_RGB_YCBCR_422_CHROMIUM: |
| return gfx::BufferFormat::UYVY_422; |
| default: |
| NOTREACHED(); |
| return gfx::BufferFormat::RGBA_8888; |
| } |
| } |
| |
| // static |
| gfx::BufferUsage ImageFactory::ImageUsageToGpuMemoryBufferUsage( |
| unsigned usage) { |
| switch (usage) { |
| case GL_MAP_CHROMIUM: |
| return gfx::BufferUsage::MAP; |
| case GL_SCANOUT_CHROMIUM: |
| return gfx::BufferUsage::SCANOUT; |
| default: |
| NOTREACHED(); |
| return gfx::BufferUsage::MAP; |
| } |
| } |
| |
| // static |
| bool ImageFactory::IsImageFormatCompatibleWithGpuMemoryBufferFormat( |
| unsigned internalformat, |
| gfx::BufferFormat format) { |
| switch (format) { |
| case gfx::BufferFormat::ATC: |
| case gfx::BufferFormat::ATCIA: |
| case gfx::BufferFormat::BGRA_8888: |
| case gfx::BufferFormat::BGRX_8888: |
| case gfx::BufferFormat::DXT1: |
| case gfx::BufferFormat::DXT5: |
| case gfx::BufferFormat::ETC1: |
| case gfx::BufferFormat::R_8: |
| case gfx::BufferFormat::RGBA_8888: |
| case gfx::BufferFormat::YUV_420: |
| case gfx::BufferFormat::YUV_420_BIPLANAR: |
| case gfx::BufferFormat::UYVY_422: |
| return format == DefaultBufferFormatForImageFormat(internalformat); |
| case gfx::BufferFormat::RGBA_4444: |
| return internalformat == GL_RGBA; |
| } |
| |
| NOTREACHED(); |
| return false; |
| } |
| |
| // static |
| bool ImageFactory::IsGpuMemoryBufferFormatSupported( |
| gfx::BufferFormat format, |
| const gpu::Capabilities& capabilities) { |
| switch (format) { |
| case gfx::BufferFormat::ATC: |
| case gfx::BufferFormat::ATCIA: |
| return capabilities.texture_format_atc; |
| case gfx::BufferFormat::BGRA_8888: |
| return capabilities.texture_format_bgra8888; |
| case gfx::BufferFormat::DXT1: |
| return capabilities.texture_format_dxt1; |
| case gfx::BufferFormat::DXT5: |
| return capabilities.texture_format_dxt5; |
| case gfx::BufferFormat::ETC1: |
| return capabilities.texture_format_etc1; |
| case gfx::BufferFormat::R_8: |
| return capabilities.texture_rg; |
| case gfx::BufferFormat::UYVY_422: |
| return capabilities.image_ycbcr_422; |
| case gfx::BufferFormat::RGBA_4444: |
| case gfx::BufferFormat::RGBA_8888: |
| case gfx::BufferFormat::BGRX_8888: |
| case gfx::BufferFormat::YUV_420: |
| return true; |
| case gfx::BufferFormat::YUV_420_BIPLANAR: |
| return false; |
| } |
| |
| NOTREACHED(); |
| return false; |
| } |
| |
| // static |
| bool ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat( |
| const gfx::Size& size, |
| gfx::BufferFormat format) { |
| switch (format) { |
| case gfx::BufferFormat::ATC: |
| case gfx::BufferFormat::ATCIA: |
| case gfx::BufferFormat::DXT1: |
| case gfx::BufferFormat::DXT5: |
| case gfx::BufferFormat::ETC1: |
| // Compressed images must have a width and height that's evenly divisible |
| // by the block size. |
| return size.width() % 4 == 0 && size.height() % 4 == 0; |
| case gfx::BufferFormat::R_8: |
| case gfx::BufferFormat::RGBA_4444: |
| case gfx::BufferFormat::RGBA_8888: |
| case gfx::BufferFormat::BGRA_8888: |
| case gfx::BufferFormat::BGRX_8888: |
| return true; |
| case gfx::BufferFormat::YUV_420: |
| case gfx::BufferFormat::YUV_420_BIPLANAR: |
| // U and V planes are subsampled by a factor of 2. |
| return size.width() % 2 == 0 && size.height() % 2 == 0; |
| case gfx::BufferFormat::UYVY_422: |
| return size.width() % 2 == 0; |
| } |
| |
| NOTREACHED(); |
| return false; |
| } |
| |
| } // namespace gpu |