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- // Copyright (c) 2012 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.
- // Helper functions for GL.
- #ifndef GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_
- #define GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_
- #include <GLES2/gl2.h>
- #include <stdint.h>
- #include <vector>
- #include "base/memory/raw_ptr.h"
- #include "build/build_config.h"
- #include "gpu/command_buffer/tests/gl_manager.h"
- #include "ui/gl/gl_display.h"
- #include "ui/gl/gl_implementation.h"
- namespace gl {
- class GLImageNativePixmap;
- }
- namespace gpu {
- class GLTestHelper {
- public:
- static const uint8_t kCheckClearValue = 123u;
- static gl::GLDisplay* InitializeGL(gl::GLImplementation gl_impl);
- static gl::GLDisplay* InitializeGLDefault();
- static bool HasExtension(const char* extension);
- static bool CheckGLError(const char* msg, int line);
- // Compiles a shader.
- // Does not check for errors, always returns shader.
- static GLuint CompileShader(GLenum type, const char* shaderSrc);
- // Compiles a shader and checks for compilation errors.
- // Returns shader, 0 on failure.
- static GLuint LoadShader(GLenum type, const char* shaderSrc);
- // Attaches 2 shaders and links them to a program.
- // Does not check for errors, always returns program.
- static GLuint LinkProgram(GLuint vertex_shader, GLuint fragment_shader);
- // Attaches 2 shaders, links them to a program, and checks for errors.
- // Returns program, 0 on failure.
- static GLuint SetupProgram(GLuint vertex_shader, GLuint fragment_shader);
- // Compiles 2 shaders, attaches and links them to a program
- // Returns program, 0 on failure.
- static GLuint LoadProgram(
- const char* vertex_shader_source,
- const char* fragment_shader_source);
- // Make a unit quad with position only.
- // Returns the created buffer.
- static GLuint SetupUnitQuad(GLint position_location);
- // Returns a vector of size 2. The first is the array buffer object,
- // the second is the element array buffer object.
- static std::vector<GLuint> SetupIndexedUnitQuad(GLint position_location);
- // Make a 6 vertex colors.
- // Returns the created buffer.
- static GLuint SetupColorsForUnitQuad(
- GLint location, const GLfloat color[4], GLenum usage);
- // Checks an area of pixels for a color.
- // If mask is nullptr, compare all color channels; otherwise, compare the
- // channels whose corresponding mask bit is true.
- static bool CheckPixels(GLint x,
- GLint y,
- GLsizei width,
- GLsizei height,
- GLint tolerance,
- const uint8_t* color,
- const uint8_t* mask);
- static bool CheckPixels(GLint x,
- GLint y,
- GLsizei width,
- GLsizei height,
- GLint tolerance,
- const std::vector<uint8_t>& expected,
- const uint8_t* mask);
- // Uses ReadPixels to save an area of the current FBO/Backbuffer.
- static bool SaveBackbufferAsBMP(const char* filename, int width, int height);
- static void DrawTextureQuad(const GLenum texture_target,
- const char* vertex_src,
- const char* fragment_src,
- const char* position_name,
- const char* sampler_name,
- const char* face_name);
- };
- class GpuCommandBufferTestEGL {
- public:
- GpuCommandBufferTestEGL();
- ~GpuCommandBufferTestEGL();
- // Reinitialize GL to an EGL implementation if it is available and not
- // the current initialized GL implementation. Return true on success, false
- // otherwise.
- bool InitializeEGL(int width, int height);
- // Restore the default GL implementation.
- void RestoreGLDefault();
- // Returns whether the current context supports the named EGL extension.
- bool HasEGLExtension(const base::StringPiece& extension) {
- return gfx::HasExtension(egl_extensions_, extension);
- }
- // Returns whether the current context supports the named GL extension.
- bool HasGLExtension(const base::StringPiece& extension) {
- return gfx::HasExtension(gl_extensions_, extension);
- }
- #if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
- // Create GLImageNativePixmap filled in with the given pixels.
- scoped_refptr<gl::GLImageNativePixmap> CreateGLImageNativePixmap(
- gfx::BufferFormat format,
- gfx::Size size,
- uint8_t* pixels) const;
- // Get some real dmabuf fds for testing by exporting an EGLImage created from
- // a GL texture.
- gfx::NativePixmapHandle CreateNativePixmapHandle(gfx::BufferFormat format,
- gfx::Size size,
- uint8_t* pixels);
- #endif
- protected:
- bool gl_reinitialized_;
- GLManager gl_;
- gl::GLWindowSystemBindingInfo window_system_binding_info_;
- gfx::ExtensionSet egl_extensions_;
- gfx::ExtensionSet gl_extensions_;
- raw_ptr<gl::GLDisplay> gl_display_ = nullptr;
- };
- } // namespace gpu
- #endif // GPU_COMMAND_BUFFER_TESTS_GL_TEST_UTILS_H_
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