1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105


gpu / command_buffer / service / shared_image / gl_common_image_backing_factory.h [blame]

// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_GL_COMMON_IMAGE_BACKING_FACTORY_H_
#define GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_GL_COMMON_IMAGE_BACKING_FACTORY_H_

#include "base/memory/raw_ptr.h"
#include "gpu/command_buffer/common/shared_image_usage.h"
#include "gpu/command_buffer/service/shared_image/shared_image_backing_factory.h"
#include "gpu/command_buffer/service/shared_image/shared_image_format_service_utils.h"
#include "gpu/command_buffer/service/texture_manager.h"

namespace gfx {
class Size;
}  // namespace gfx

namespace gl {
class ProgressReporter;
}  // namespace gl

namespace gpu {

namespace gles2 {
class FeatureInfo;
}  // namespace gles2

class GpuDriverBugWorkarounds;
struct GpuPreferences;

// Common constructor and helper functions for
// various GL-based backing factories.
class GPU_GLES2_EXPORT GLCommonImageBackingFactory
    : public SharedImageBackingFactory {
 public:
  struct FormatInfo {
    FormatInfo();
    FormatInfo(const FormatInfo& other);
    ~FormatInfo();

    // Whether this format supports TexStorage2D.
    bool supports_storage = false;

    // Whether the texture is a compressed type.
    bool is_compressed = false;

    GLenum gl_format = 0;
    GLenum gl_type = 0;

    // The internalformat portion of the format/type/internalformat triplet
    // used when calling TexImage2D
    GLuint image_internal_format = 0;

    // The internalformat portion of the format/type/internalformat triplet
    // used when calling TexStorage2D
    GLuint storage_internal_format = 0;

    // The adjusted formats which may be different when using the validating
    // command decoder.
    GLenum adjusted_format = 0;
    GLuint adjusted_storage_internal_format = 0;

    raw_ptr<const gles2::Texture::CompatibilitySwizzle> swizzle = nullptr;
  };

 protected:
  GLCommonImageBackingFactory(SharedImageUsageSet supported_usages,
                              const GpuPreferences& gpu_preferences,
                              const GpuDriverBugWorkarounds& workarounds,
                              const gles2::FeatureInfo* feature_info,
                              gl::ProgressReporter* progress_reporter);
  ~GLCommonImageBackingFactory() override;

  // Returns FormatInfo for each plane in format. Will return an empty vector
  // if format isn't supported.
  std::vector<FormatInfo> GetFormatInfo(viz::SharedImageFormat format) const;

  bool CanCreateTexture(viz::SharedImageFormat format,
                        const gfx::Size& size,
                        base::span<const uint8_t> pixel_data,
                        GLenum target);

  // Whether we're using the passthrough command decoder and should generate
  // passthrough textures.
  bool use_passthrough_ = false;

  int32_t max_texture_size_ = 0;
  bool texture_usage_angle_ = false;
  GpuDriverBugWorkarounds workarounds_;
  const GLFormatCaps gl_format_caps_;
  WebGPUAdapterName use_webgpu_adapter_ = WebGPUAdapterName::kDefault;

  // Used to notify the watchdog before a buffer allocation in case it takes
  // long.
  const raw_ptr<gl::ProgressReporter> progress_reporter_ = nullptr;

 private:
  // Map of supported single planar SharedImageFormats and associated GL format
  // info for them.
  std::map<viz::SharedImageFormat, FormatInfo> supported_formats_;
};

}  // namespace gpu

#endif  // GPU_COMMAND_BUFFER_SERVICE_SHARED_IMAGE_GL_COMMON_IMAGE_BACKING_FACTORY_H_