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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.
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.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 BindUniformLocationTest : public testing::Test {
protected:
static const GLsizei kResolution = 4;
virtual void SetUp() {
GLManager::Options options;
options.size = gfx::Size(kResolution, kResolution);
gl_.Initialize(options);
}
virtual void TearDown() {
gl_.Destroy();
}
GLManager gl_;
};
TEST_F(BindUniformLocationTest, Basic) {
ASSERT_TRUE(
GLTestHelper::HasExtension("GL_CHROMIUM_bind_uniform_location"));
static const char* v_shader_str = SHADER(
attribute vec4 a_position;
void main()
{
gl_Position = a_position;
}
);
static const char* f_shader_str = SHADER(
precision mediump float;
uniform vec4 u_colorC;
uniform vec4 u_colorB[2];
uniform vec4 u_colorA;
void main()
{
gl_FragColor = u_colorA + u_colorB[0] + u_colorB[1] + u_colorC;
}
);
GLint color_a_location = 3;
GLint color_b_location = 10;
GLint color_c_location = 5;
GLuint vertex_shader = GLTestHelper::LoadShader(
GL_VERTEX_SHADER, v_shader_str);
GLuint fragment_shader = GLTestHelper::LoadShader(
GL_FRAGMENT_SHADER, f_shader_str);
GLuint program = glCreateProgram();
glBindUniformLocationCHROMIUM(program, color_a_location, "u_colorA");
glBindUniformLocationCHROMIUM(program, color_b_location, "u_colorB[0]");
glBindUniformLocationCHROMIUM(program, color_c_location, "u_colorC");
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
// Link the program
glLinkProgram(program);
// Check the link status
GLint linked = 0;
glGetProgramiv(program, GL_LINK_STATUS, &linked);
EXPECT_EQ(1, linked);
GLint position_loc = glGetAttribLocation(program, "a_position");
GLTestHelper::SetupUnitQuad(position_loc);
glUseProgram(program);
static const float color_b[] = {
0.0f, 0.50f, 0.0f, 0.0f,
0.0f, 0.0f, 0.75f, 0.0f,
};
glUniform4f(color_a_location, 0.25f, 0.0f, 0.0f, 0.0f);
glUniform4fv(color_b_location, 2, color_b);
glUniform4f(color_c_location, 0.0f, 0.0f, 0.0f, 1.0f);
glDrawArrays(GL_TRIANGLES, 0, 6);
static const uint8 expected[] = { 64, 128, 192, 255 };
EXPECT_TRUE(
GLTestHelper::CheckPixels(0, 0, kResolution, kResolution, 1, expected));
GLTestHelper::CheckGLError("no errors", __LINE__);
}
TEST_F(BindUniformLocationTest, Compositor) {
ASSERT_TRUE(
GLTestHelper::HasExtension("GL_CHROMIUM_bind_uniform_location"));
static const char* v_shader_str = SHADER(
attribute vec4 a_position;
attribute vec2 a_texCoord;
uniform mat4 matrix;
uniform vec2 color_a[4];
uniform vec4 color_b;
varying vec4 v_color;
void main()
{
v_color.xy = color_a[0] + color_a[1];
v_color.zw = color_a[2] + color_a[3];
v_color += color_b;
gl_Position = matrix * a_position;
}
);
static const char* f_shader_str = SHADER(
precision mediump float;
varying vec4 v_color;
uniform float alpha;
uniform vec4 multiplier;
uniform vec3 color_c[8];
void main()
{
vec4 color_c_sum = vec4(0.0);
color_c_sum.xyz += color_c[0];
color_c_sum.xyz += color_c[1];
color_c_sum.xyz += color_c[2];
color_c_sum.xyz += color_c[3];
color_c_sum.xyz += color_c[4];
color_c_sum.xyz += color_c[5];
color_c_sum.xyz += color_c[6];
color_c_sum.xyz += color_c[7];
color_c_sum.w = alpha;
color_c_sum *= multiplier;
gl_FragColor = v_color + color_c_sum;
}
);
int counter = 0;
int matrix_location = counter++;
int color_a_location = counter++;
int color_b_location = counter++;
int alpha_location = counter++;
int multiplier_location = counter++;
int color_c_location = counter++;
GLuint vertex_shader = GLTestHelper::LoadShader(
GL_VERTEX_SHADER, v_shader_str);
GLuint fragment_shader = GLTestHelper::LoadShader(
GL_FRAGMENT_SHADER, f_shader_str);
GLuint program = glCreateProgram();
glBindUniformLocationCHROMIUM(program, matrix_location, "matrix");
glBindUniformLocationCHROMIUM(program, color_a_location, "color_a");
glBindUniformLocationCHROMIUM(program, color_b_location, "color_b");
glBindUniformLocationCHROMIUM(program, alpha_location, "alpha");
glBindUniformLocationCHROMIUM(program, multiplier_location, "multiplier");
glBindUniformLocationCHROMIUM(program, color_c_location, "color_c");
glAttachShader(program, vertex_shader);
glAttachShader(program, fragment_shader);
// Link the program
glLinkProgram(program);
// Check the link status
GLint linked = 0;
glGetProgramiv(program, GL_LINK_STATUS, &linked);
EXPECT_EQ(1, linked);
GLint position_loc = glGetAttribLocation(program, "a_position");
GLTestHelper::SetupUnitQuad(position_loc);
glUseProgram(program);
static const float color_a[] = {
0.1f, 0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f, 0.1f,
};
static const float color_c[] = {
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
0.1f, 0.1f, 0.1f,
};
static const float identity[] = {
1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1,
};
glUniformMatrix4fv(matrix_location, 1, false, identity);
glUniform2fv(color_a_location, 4, color_a);
glUniform4f(color_b_location, 0.2f, 0.2f, 0.2f, 0.2f);
glUniform1f(alpha_location, 0.8f);
glUniform4f(multiplier_location, 0.5f, 0.5f, 0.5f, 0.5f);
glUniform3fv(color_c_location, 8, color_c);
glDrawArrays(GL_TRIANGLES, 0, 6);
static const uint8 expected[] = { 204, 204, 204, 204 };
EXPECT_TRUE(
GLTestHelper::CheckPixels(0, 0, kResolution, kResolution, 1, expected));
GLTestHelper::CheckGLError("no errors", __LINE__);
}
} // namespace gpu
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