| // 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::GpuMemoryBuffer::Format ImageFactory::ImageFormatToGpuMemoryBufferFormat( |
| unsigned internalformat) { |
| switch (internalformat) { |
| case GL_RGB: |
| return gfx::GpuMemoryBuffer::RGBX_8888; |
| case GL_RGBA: |
| return gfx::GpuMemoryBuffer::RGBA_8888; |
| case GL_ATC_RGB_AMD: |
| return gfx::GpuMemoryBuffer::ATC; |
| case GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD: |
| return gfx::GpuMemoryBuffer::ATCIA; |
| case GL_COMPRESSED_RGB_S3TC_DXT1_EXT: |
| return gfx::GpuMemoryBuffer::DXT1; |
| case GL_COMPRESSED_RGBA_S3TC_DXT5_EXT: |
| return gfx::GpuMemoryBuffer::DXT5; |
| case GL_ETC1_RGB8_OES: |
| return gfx::GpuMemoryBuffer::ETC1; |
| default: |
| NOTREACHED(); |
| return gfx::GpuMemoryBuffer::RGBA_8888; |
| } |
| } |
| |
| // static |
| gfx::GpuMemoryBuffer::Usage ImageFactory::ImageUsageToGpuMemoryBufferUsage( |
| unsigned usage) { |
| switch (usage) { |
| case GL_MAP_CHROMIUM: |
| return gfx::GpuMemoryBuffer::MAP; |
| case GL_SCANOUT_CHROMIUM: |
| return gfx::GpuMemoryBuffer::SCANOUT; |
| default: |
| NOTREACHED(); |
| return gfx::GpuMemoryBuffer::MAP; |
| } |
| } |
| |
| // static |
| bool ImageFactory::IsImageFormatCompatibleWithGpuMemoryBufferFormat( |
| unsigned internalformat, |
| gfx::GpuMemoryBuffer::Format format) { |
| switch (internalformat) { |
| case GL_RGB: |
| switch (format) { |
| case gfx::GpuMemoryBuffer::ATC: |
| case gfx::GpuMemoryBuffer::ATCIA: |
| case gfx::GpuMemoryBuffer::DXT1: |
| case gfx::GpuMemoryBuffer::DXT5: |
| case gfx::GpuMemoryBuffer::ETC1: |
| case gfx::GpuMemoryBuffer::RGBX_8888: |
| return true; |
| case gfx::GpuMemoryBuffer::RGBA_8888: |
| case gfx::GpuMemoryBuffer::BGRA_8888: |
| return false; |
| } |
| NOTREACHED(); |
| return false; |
| case GL_RGBA: |
| switch (format) { |
| case gfx::GpuMemoryBuffer::RGBX_8888: |
| return false; |
| case gfx::GpuMemoryBuffer::ATC: |
| case gfx::GpuMemoryBuffer::ATCIA: |
| case gfx::GpuMemoryBuffer::DXT1: |
| case gfx::GpuMemoryBuffer::DXT5: |
| case gfx::GpuMemoryBuffer::ETC1: |
| case gfx::GpuMemoryBuffer::RGBA_8888: |
| case gfx::GpuMemoryBuffer::BGRA_8888: |
| return true; |
| } |
| NOTREACHED(); |
| return false; |
| default: |
| NOTREACHED(); |
| return false; |
| } |
| } |
| |
| // static |
| bool ImageFactory::IsGpuMemoryBufferFormatSupported( |
| gfx::GpuMemoryBuffer::Format format, |
| const gpu::Capabilities& capabilities) { |
| switch (format) { |
| case gfx::GpuMemoryBuffer::ATC: |
| case gfx::GpuMemoryBuffer::ATCIA: |
| return capabilities.texture_format_atc; |
| case gfx::GpuMemoryBuffer::BGRA_8888: |
| return capabilities.texture_format_bgra8888; |
| case gfx::GpuMemoryBuffer::DXT1: |
| return capabilities.texture_format_dxt1; |
| case gfx::GpuMemoryBuffer::DXT5: |
| return capabilities.texture_format_dxt5; |
| case gfx::GpuMemoryBuffer::ETC1: |
| return capabilities.texture_format_etc1; |
| case gfx::GpuMemoryBuffer::RGBA_8888: |
| case gfx::GpuMemoryBuffer::RGBX_8888: |
| return true; |
| } |
| |
| NOTREACHED(); |
| return false; |
| } |
| |
| // static |
| bool ImageFactory::IsImageSizeValidForGpuMemoryBufferFormat( |
| const gfx::Size& size, |
| gfx::GpuMemoryBuffer::Format format) { |
| switch (format) { |
| case gfx::GpuMemoryBuffer::ATC: |
| case gfx::GpuMemoryBuffer::ATCIA: |
| case gfx::GpuMemoryBuffer::DXT1: |
| case gfx::GpuMemoryBuffer::DXT5: |
| case gfx::GpuMemoryBuffer::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::GpuMemoryBuffer::RGBA_8888: |
| case gfx::GpuMemoryBuffer::BGRA_8888: |
| case gfx::GpuMemoryBuffer::RGBX_8888: |
| return true; |
| } |
| |
| NOTREACHED(); |
| return false; |
| } |
| |
| } // namespace gpu |