Natasha Lee 4886403b61 Clear OpenGL textures on first use if not initialized already
This prevents dirty textures to be used when memory is recycled while
destroying/creating new textures. If a texture is being used for the
first time and has not yet been initialized, it will be cleared
to zeros.

Bug: dawn:145
Change-Id: I1140ff0535241b247b855df2afefc01fbc003470
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/8380
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Natasha Lee <natlee@microsoft.com>
2019-07-02 17:38:09 +00:00

78 lines
2.3 KiB
C++

// Copyright 2017 The Dawn Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef DAWNNATIVE_OPENGL_TEXTUREGL_H_
#define DAWNNATIVE_OPENGL_TEXTUREGL_H_
#include "dawn_native/Texture.h"
#include "dawn_native/opengl/opengl_platform.h"
namespace dawn_native { namespace opengl {
class Device;
struct TextureFormatInfo {
GLenum internalFormat;
GLenum format;
GLenum type;
};
class Texture : public TextureBase {
public:
Texture(Device* device, const TextureDescriptor* descriptor);
Texture(Device* device,
const TextureDescriptor* descriptor,
GLuint handle,
TextureState state);
~Texture();
GLuint GetHandle() const;
GLenum GetGLTarget() const;
TextureFormatInfo GetGLFormat() const;
void EnsureSubresourceContentInitialized(uint32_t baseMipLevel,
uint32_t levelCount,
uint32_t baseArrayLayer,
uint32_t layerCount);
private:
void DestroyImpl() override;
void ClearTexture(GLint baseMipLevel,
GLint levelCount,
GLint baseArrayLayer,
uint32_t layerCount);
GLuint mHandle;
GLenum mTarget;
};
class TextureView : public TextureViewBase {
public:
TextureView(TextureBase* texture, const TextureViewDescriptor* descriptor);
~TextureView();
GLuint GetHandle() const;
GLenum GetGLTarget() const;
private:
GLuint mHandle;
GLenum mTarget;
bool mOwnsHandle;
};
}} // namespace dawn_native::opengl
#endif // DAWNNATIVE_OPENGL_TEXTUREGL_H_