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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/vr/renderers/base_renderer.h"
#include <ostream>
#include "base/check.h"
#include "device/vr/vr_gl_util.h"
namespace vr {
BaseRenderer::BaseRenderer(const char* vertex_src, const char* fragment_src) {
std::string error;
GLuint vertex_shader_handle =
CompileShader(GL_VERTEX_SHADER, vertex_src, error);
CHECK(vertex_shader_handle) << error << "\nvertex_src\n" << vertex_src;
GLuint fragment_shader_handle =
CompileShader(GL_FRAGMENT_SHADER, fragment_src, error);
CHECK(fragment_shader_handle) << error << "\nfragment_src\n" << fragment_src;
program_handle_ =
CreateAndLinkProgram(vertex_shader_handle, fragment_shader_handle, error);
CHECK(program_handle_) << error;
// Once the program is linked the shader objects are no longer needed
glDeleteShader(vertex_shader_handle);
glDeleteShader(fragment_shader_handle);
position_handle_ = glGetAttribLocation(program_handle_, "a_Position");
clip_rect_handle_ = glGetUniformLocation(program_handle_, "u_ClipRect");
}
BaseRenderer::~BaseRenderer() = default;
void BaseRenderer::Flush() {}
} // namespace vr
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