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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <stdint.h>
#include "build/build_config.h"
#include "gpu/command_buffer/tests/gl_manager.h"
#include "gpu/command_buffer/tests/gl_test_utils.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#define SHADER(Src) #Src
namespace gpu {
class GLStreamDrawTest : public testing::Test {
protected:
static const int kSize = 4;
void SetUp() override {
GLManager::Options options;
options.size = gfx::Size(kSize, kSize);
gl_.Initialize(options);
}
void TearDown() override { gl_.Destroy(); }
GLManager gl_;
};
namespace {
GLuint SetupProgram() {
static const char* v_shader_str = SHADER(
attribute vec4 a_position;
attribute vec4 a_color;
varying vec4 v_color;
void main()
{
gl_Position = a_position;
v_color = a_color;
}
);
static const char* f_shader_str = SHADER(
precision mediump float;
varying vec4 v_color;
void main()
{
gl_FragColor = v_color;
}
);
GLuint program = GLTestHelper::LoadProgram(v_shader_str, f_shader_str);
glUseProgram(program);
return program;
}
} // anonymous namespace.
TEST_F(GLStreamDrawTest, Basic) {
static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
static uint8_t expected_red[4] = {
255, 0, 0, 255,
};
static uint8_t expected_green[4] = {
0, 255, 0, 255,
};
GLuint program = SetupProgram();
GLuint position_loc = glGetAttribLocation(program, "a_position");
GLuint color_loc = glGetAttribLocation(program, "a_color");
GLTestHelper::SetupUnitQuad(position_loc);
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_TRUE(
GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red, nullptr));
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green,
nullptr));
GLTestHelper::CheckGLError("no errors", __LINE__);
}
// http://crbug.com/281565
#if !BUILDFLAG(IS_ANDROID)
TEST_F(GLStreamDrawTest, DrawElements) {
static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
static uint8_t expected_red[4] = {
255, 0, 0, 255,
};
static uint8_t expected_green[4] = {
0, 255, 0, 255,
};
GLuint program = SetupProgram();
GLuint position_loc = glGetAttribLocation(program, "a_position");
GLuint color_loc = glGetAttribLocation(program, "a_color");
GLTestHelper::SetupUnitQuad(position_loc);
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
GLuint index_buffer = 0;
glGenBuffers(1, &index_buffer);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, index_buffer);
static GLubyte indices[] = { 0, 1, 2, 3, 4, 5, };
glBufferData(
GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STREAM_DRAW);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, nullptr);
EXPECT_TRUE(
GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red, nullptr));
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
glBufferData(
GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_BYTE, nullptr);
EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green,
nullptr));
GLTestHelper::CheckGLError("no errors", __LINE__);
}
#endif
TEST_F(GLStreamDrawTest, VertexArrayObjects) {
if (!GLTestHelper::HasExtension("GL_OES_vertex_array_object")) {
return;
}
static GLfloat float_red[4] = { 1.0f, 0.0f, 0.0f, 1.0f, };
static GLfloat float_green[4] = { 0.0f, 1.0f, 0.0f, 1.0f, };
static uint8_t expected_red[4] = {
255, 0, 0, 255,
};
static uint8_t expected_green[4] = {
0, 255, 0, 255,
};
GLuint program = SetupProgram();
GLuint position_loc = glGetAttribLocation(program, "a_position");
GLuint color_loc = glGetAttribLocation(program, "a_color");
GLuint vaos[2];
glGenVertexArraysOES(2, vaos);
glBindVertexArrayOES(vaos[0]);
GLuint position_buffer = GLTestHelper::SetupUnitQuad(position_loc);
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_red, GL_STREAM_DRAW);
glBindVertexArrayOES(vaos[1]);
glBindBuffer(GL_ARRAY_BUFFER, position_buffer);
glEnableVertexAttribArray(position_loc);
glVertexAttribPointer(position_loc, 2, GL_FLOAT, GL_FALSE, 0, 0);
GLTestHelper::SetupColorsForUnitQuad(color_loc, float_green, GL_STATIC_DRAW);
for (int ii = 0; ii < 2; ++ii) {
glBindVertexArrayOES(vaos[0]);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_red,
nullptr));
glBindVertexArrayOES(vaos[1]);
glDrawArrays(GL_TRIANGLES, 0, 6);
EXPECT_TRUE(GLTestHelper::CheckPixels(0, 0, kSize, kSize, 0, expected_green,
nullptr));
}
GLTestHelper::CheckGLError("no errors", __LINE__);
}
} // namespace gpu
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