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// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <string_view>
#include <vector>
#include <glad/glad.h>
#include "common/assert.h"
#include "common/logging/log.h"
#include "video_core/renderer_opengl/gl_shader_util.h"
namespace OpenGL::GLShader {
namespace {
std::string_view StageDebugName(GLenum type) {
switch (type) {
case GL_VERTEX_SHADER:
return "vertex";
case GL_GEOMETRY_SHADER:
return "geometry";
case GL_FRAGMENT_SHADER:
return "fragment";
case GL_COMPUTE_SHADER:
return "compute";
}
UNIMPLEMENTED();
return "unknown";
}
} // Anonymous namespace
GLuint LoadShader(std::string_view source, GLenum type) {
const std::string_view debug_type = StageDebugName(type);
const GLuint shader_id = glCreateShader(type);
const GLchar* source_string = source.data();
const GLint source_length = static_cast<GLint>(source.size());
glShaderSource(shader_id, 1, &source_string, &source_length);
LOG_DEBUG(Render_OpenGL, "Compiling {} shader...", debug_type);
glCompileShader(shader_id);
GLint result = GL_FALSE;
GLint info_log_length;
glGetShaderiv(shader_id, GL_COMPILE_STATUS, &result);
glGetShaderiv(shader_id, GL_INFO_LOG_LENGTH, &info_log_length);
if (info_log_length > 1) {
std::string shader_error(info_log_length, ' ');
glGetShaderInfoLog(shader_id, info_log_length, nullptr, &shader_error[0]);
if (result == GL_TRUE) {
LOG_DEBUG(Render_OpenGL, "{}", shader_error);
} else {
LOG_ERROR(Render_OpenGL, "Error compiling {} shader:\n{}", debug_type, shader_error);
}
}
return shader_id;
}
} // namespace OpenGL::GLShader
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