chromium/third_party/angle/src/libANGLE/renderer/gl/BlitGL.cpp

//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//

// BlitGL.cpp: Implements the BlitGL class, a helper for blitting textures

#include "libANGLE/renderer/gl/BlitGL.h"

#include "common/FixedVector.h"
#include "common/utilities.h"
#include "common/vector_utils.h"
#include "image_util/copyimage.h"
#include "libANGLE/Context.h"
#include "libANGLE/Framebuffer.h"
#include "libANGLE/formatutils.h"
#include "libANGLE/renderer/Format.h"
#include "libANGLE/renderer/gl/ContextGL.h"
#include "libANGLE/renderer/gl/FramebufferGL.h"
#include "libANGLE/renderer/gl/FunctionsGL.h"
#include "libANGLE/renderer/gl/RenderbufferGL.h"
#include "libANGLE/renderer/gl/StateManagerGL.h"
#include "libANGLE/renderer/gl/TextureGL.h"
#include "libANGLE/renderer/gl/formatutilsgl.h"
#include "libANGLE/renderer/gl/renderergl_utils.h"
#include "libANGLE/renderer/renderer_utils.h"
#include "platform/autogen/FeaturesGL_autogen.h"

Vector2;

namespace rx
{

namespace
{

angle::Result CheckCompileStatus(const gl::Context *context,
                                 const rx::FunctionsGL *functions,
                                 GLuint shader)
{ … }

angle::Result CheckLinkStatus(const gl::Context *context,
                              const rx::FunctionsGL *functions,
                              GLuint program)
{ … }

class [[nodiscard]] ScopedGLState : angle::NonCopyable
{ … };

angle::Result SetClearState(StateManagerGL *stateManager,
                            bool colorClear,
                            bool depthClear,
                            bool stencilClear,
                            GLbitfield *outClearMask)
{ … }

ClearBindTargetVector;

angle::Result PrepareForClear(StateManagerGL *stateManager,
                              GLenum sizedInternalFormat,
                              ClearBindTargetVector *outBindtargets,
                              ClearBindTargetVector *outUnbindTargets,
                              GLbitfield *outClearMask)
{ … }

angle::Result UnbindAttachment(const gl::Context *context,
                               const FunctionsGL *functions,
                               GLenum framebufferTarget,
                               GLenum attachment)
{ … }

angle::Result UnbindAttachments(const gl::Context *context,
                                const FunctionsGL *functions,
                                GLenum framebufferTarget,
                                const ClearBindTargetVector &bindTargets)
{ … }

angle::Result CheckIfAttachmentNeedsClearing(const gl::Context *context,
                                             const gl::FramebufferAttachment *attachment,
                                             bool *needsClearInit)
{ … }

}  // anonymous namespace

BlitGL::BlitGL(const FunctionsGL *functions,
               const angle::FeaturesGL &features,
               StateManagerGL *stateManager)
    : … { … }

BlitGL::~BlitGL()
{ … }

angle::Result BlitGL::copyImageToLUMAWorkaroundTexture(const gl::Context *context,
                                                       GLuint texture,
                                                       gl::TextureType textureType,
                                                       gl::TextureTarget target,
                                                       GLenum lumaFormat,
                                                       size_t level,
                                                       const gl::Rectangle &sourceArea,
                                                       GLenum internalFormat,
                                                       gl::Framebuffer *source)
{ … }

angle::Result BlitGL::copySubImageToLUMAWorkaroundTexture(const gl::Context *context,
                                                          GLuint texture,
                                                          gl::TextureType textureType,
                                                          gl::TextureTarget target,
                                                          GLenum lumaFormat,
                                                          size_t level,
                                                          const gl::Offset &destOffset,
                                                          const gl::Rectangle &sourceArea,
                                                          gl::Framebuffer *source)
{ … }

angle::Result BlitGL::blitColorBufferWithShader(const gl::Context *context,
                                                const gl::Framebuffer *source,
                                                const GLuint destTexture,
                                                const gl::TextureTarget destTarget,
                                                const size_t destLevel,
                                                const gl::Rectangle &sourceAreaIn,
                                                const gl::Rectangle &destAreaIn,
                                                GLenum filter,
                                                bool writeAlpha)
{ … }

angle::Result BlitGL::blitColorBufferWithShader(const gl::Context *context,
                                                const gl::Framebuffer *source,
                                                const gl::Framebuffer *dest,
                                                const gl::Rectangle &sourceAreaIn,
                                                const gl::Rectangle &destAreaIn,
                                                GLenum filter,
                                                bool writeAlpha)
{ … }

angle::Result BlitGL::blitColorBufferWithShader(const gl::Context *context,
                                                const gl::Framebuffer *source,
                                                const GLuint destFramebuffer,
                                                const gl::Rectangle &sourceAreaIn,
                                                const gl::Rectangle &destAreaIn,
                                                GLenum filter,
                                                bool writeAlpha)
{ … }

angle::Result BlitGL::copySubTexture(const gl::Context *context,
                                     TextureGL *source,
                                     size_t sourceLevel,
                                     GLenum sourceComponentType,
                                     GLuint destID,
                                     gl::TextureTarget destTarget,
                                     size_t destLevel,
                                     GLenum destComponentType,
                                     const gl::Extents &sourceSize,
                                     const gl::Rectangle &sourceArea,
                                     const gl::Offset &destOffset,
                                     bool needsLumaWorkaround,
                                     GLenum lumaFormat,
                                     bool unpackFlipY,
                                     bool unpackPremultiplyAlpha,
                                     bool unpackUnmultiplyAlpha,
                                     bool transformLinearToSrgb,
                                     bool *copySucceededOut)
{ … }

angle::Result BlitGL::copySubTextureCPUReadback(const gl::Context *context,
                                                TextureGL *source,
                                                size_t sourceLevel,
                                                GLenum sourceSizedInternalFormat,
                                                TextureGL *dest,
                                                gl::TextureTarget destTarget,
                                                size_t destLevel,
                                                GLenum destFormat,
                                                GLenum destType,
                                                const gl::Extents &sourceSize,
                                                const gl::Rectangle &sourceArea,
                                                const gl::Offset &destOffset,
                                                bool needsLumaWorkaround,
                                                GLenum lumaFormat,
                                                bool unpackFlipY,
                                                bool unpackPremultiplyAlpha,
                                                bool unpackUnmultiplyAlpha)
{ … }

angle::Result BlitGL::copyTexSubImage(const gl::Context *context,
                                      TextureGL *source,
                                      size_t sourceLevel,
                                      TextureGL *dest,
                                      gl::TextureTarget destTarget,
                                      size_t destLevel,
                                      const gl::Rectangle &sourceArea,
                                      const gl::Offset &destOffset,
                                      bool *copySucceededOut)
{ … }

angle::Result BlitGL::clearRenderableTexture(const gl::Context *context,
                                             TextureGL *source,
                                             GLenum sizedInternalFormat,
                                             int numTextureLayers,
                                             const gl::ImageIndex &imageIndex,
                                             bool *clearSucceededOut)
{ … }

angle::Result BlitGL::clearRenderbuffer(const gl::Context *context,
                                        RenderbufferGL *source,
                                        GLenum sizedInternalFormat)
{ … }

angle::Result BlitGL::clearFramebuffer(const gl::Context *context,
                                       const gl::DrawBufferMask &colorAttachments,
                                       bool depthClear,
                                       bool stencilClear,
                                       FramebufferGL *source)
{ … }

angle::Result BlitGL::clearRenderableTextureAlphaToOne(const gl::Context *context,
                                                       GLuint texture,
                                                       gl::TextureTarget target,
                                                       size_t level)
{ … }

angle::Result BlitGL::generateMipmap(const gl::Context *context,
                                     TextureGL *source,
                                     GLuint baseLevel,
                                     GLuint levelCount,
                                     const gl::Extents &sourceBaseLevelSize,
                                     const nativegl::TexImageFormat &format)
{ … }

angle::Result BlitGL::generateSRGBMipmap(const gl::Context *context,
                                         TextureGL *source,
                                         GLuint baseLevel,
                                         GLuint levelCount,
                                         const gl::Extents &sourceBaseLevelSize)
{ … }

angle::Result BlitGL::initializeResources(const gl::Context *context)
{ … }

angle::Result BlitGL::orphanScratchTextures(const gl::Context *context)
{ … }

angle::Result BlitGL::setScratchTextureParameter(const gl::Context *context,
                                                 GLenum param,
                                                 GLenum value)
{ … }

angle::Result BlitGL::setVAOState(const gl::Context *context)
{ … }

angle::Result BlitGL::initializeVAOState(const gl::Context *context)
{ … }

angle::Result BlitGL::getBlitProgram(const gl::Context *context,
                                     gl::TextureType sourceTextureType,
                                     GLenum sourceComponentType,
                                     GLenum destComponentType,
                                     BlitProgram **program)
{ … }

}  // namespace rx