blob: 972ea0af4064f172033c4a322edb229edc7b820d [file] [log] [blame]
// 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.
#include <GLES2/gl2.h>
#include "base/basictypes.h"
class GLTestHelper {
static const uint8 kCheckClearValue = 123u;
static bool HasExtension(const char* extension);
static bool CheckGLError(const char* msg, int line);
// Compiles a shader.
// Returns shader, 0 on failure..
static GLuint LoadShader(GLenum type, const char* shaderSrc);
// Attaches 2 shaders and links them to a program.
// 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);
// 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.
static bool CheckPixels(
GLint x, GLint y, GLsizei width, GLsizei height, GLint tolerance,
const uint8* color);
// Uses ReadPixels to save an area of the current FBO/Backbuffer.
static bool SaveBackbufferAsBMP(const char* filename, int width, int height);
// Run unit tests.
static int RunTests(int argc, char** argv);