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// Copyright 2019 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 <stddef.h>
#include <stdint.h>
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/command_buffer/service/gles2_cmd_decoder.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"
#include "ui/gl/gl_share_group.h"
namespace gpu {
class GLUnallocatedTextureTest : public testing::Test {
protected:
void SetUp() override { gl_.Initialize(GLManager::Options()); }
void TearDown() override { gl_.Destroy(); }
GLuint MakeProgram(const char* fragment_shader) {
constexpr const char kVertexShader[] =
"void main() { gl_Position = vec4(0.0, 0.0, 0.0, 1.0); }";
GLuint program = GLTestHelper::LoadProgram(kVertexShader, fragment_shader);
if (!program)
return 0;
glUseProgram(program);
GLint location_sampler = glGetUniformLocation(program, "sampler");
glUniform1i(location_sampler, 0);
return program;
}
// Creates a texture on target, setting up filters but without setting any
// level image.
GLuint MakeUninitializedTexture(GLenum target) {
GLuint texture = 0;
glGenTextures(1, &texture);
glBindTexture(target, texture);
glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
return texture;
}
GLManager gl_;
};
// Test that we can render with GL_TEXTURE_2D textures that are unallocated.
// This should not generate errors or assert.
TEST_F(GLUnallocatedTextureTest, RenderUnallocatedTexture2D) {
constexpr const char kFragmentShader[] =
"uniform sampler2D sampler;\n"
"void main() { gl_FragColor = texture2D(sampler, vec2(0.0, 0.0)); }\n";
GLuint program = MakeProgram(kFragmentShader);
ASSERT_TRUE(program);
GLuint texture = MakeUninitializedTexture(GL_TEXTURE_2D);
glDrawArrays(GL_TRIANGLES, 0, 3);
EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
glDeleteTextures(1, &texture);
glDeleteProgram(program);
}
// Test that we can render with GL_TEXTURE_EXTERNAL_OES textures that are
// unallocated. This should not generate errors or assert.
TEST_F(GLUnallocatedTextureTest, RenderUnallocatedTextureExternal) {
if (!gl_.GetCapabilities().egl_image_external) {
LOG(INFO) << "GL_OES_EGL_image_external not supported, skipping test";
return;
}
constexpr const char kFragmentShader[] =
"#extension GL_OES_EGL_image_external : enable\n"
"uniform samplerExternalOES sampler;\n"
"void main() { gl_FragColor = texture2D(sampler, vec2(0.0, 0.0)); }\n";
GLuint program = MakeProgram(kFragmentShader);
ASSERT_TRUE(program);
GLuint texture = MakeUninitializedTexture(GL_TEXTURE_EXTERNAL_OES);
glDrawArrays(GL_TRIANGLES, 0, 3);
EXPECT_EQ(static_cast<GLenum>(GL_NO_ERROR), glGetError());
glDeleteTextures(1, &texture);
glDeleteProgram(program);
}
} // namespace gpu
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