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// SPDX-FileCopyrightText: 2014 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include <string_view>
#include <vector>
#include <glad/glad.h>
#include "common/logging/log.h"
#include "common/settings.h"
#include "video_core/renderer_opengl/gl_shader_util.h"
namespace OpenGL {
static OGLProgram LinkSeparableProgram(GLuint shader) {
OGLProgram program;
program.handle = glCreateProgram();
glProgramParameteri(program.handle, GL_PROGRAM_SEPARABLE, GL_TRUE);
glAttachShader(program.handle, shader);
glLinkProgram(program.handle);
glDetachShader(program.handle, shader);
if (!Settings::values.renderer_debug) {
return program;
}
GLint link_status{};
glGetProgramiv(program.handle, GL_LINK_STATUS, &link_status);
GLint log_length{};
glGetProgramiv(program.handle, GL_INFO_LOG_LENGTH, &log_length);
if (log_length == 0) {
return program;
}
std::string log(log_length, 0);
glGetProgramInfoLog(program.handle, log_length, nullptr, log.data());
if (link_status == GL_FALSE) {
LOG_ERROR(Render_OpenGL, "{}", log);
} else {
LOG_WARNING(Render_OpenGL, "{}", log);
}
return program;
}
static void LogShader(GLuint shader, std::string_view code = {}) {
GLint shader_status{};
glGetShaderiv(shader, GL_COMPILE_STATUS, &shader_status);
if (shader_status == GL_FALSE) {
LOG_ERROR(Render_OpenGL, "Failed to build shader");
}
GLint log_length{};
glGetShaderiv(shader, GL_INFO_LOG_LENGTH, &log_length);
if (log_length == 0) {
return;
}
std::string log(log_length, 0);
glGetShaderInfoLog(shader, log_length, nullptr, log.data());
if (shader_status == GL_FALSE) {
LOG_ERROR(Render_OpenGL, "{}", log);
if (!code.empty()) {
LOG_INFO(Render_OpenGL, "\n{}", code);
}
} else {
LOG_WARNING(Render_OpenGL, "{}", log);
}
}
OGLProgram CreateProgram(std::string_view code, GLenum stage) {
OGLShader shader;
shader.handle = glCreateShader(stage);
const GLint length = static_cast<GLint>(code.size());
const GLchar* const code_ptr = code.data();
glShaderSource(shader.handle, 1, &code_ptr, &length);
glCompileShader(shader.handle);
if (Settings::values.renderer_debug) {
LogShader(shader.handle, code);
}
return LinkSeparableProgram(shader.handle);
}
OGLProgram CreateProgram(std::span<const u32> code, GLenum stage) {
OGLShader shader;
shader.handle = glCreateShader(stage);
glShaderBinary(1, &shader.handle, GL_SHADER_BINARY_FORMAT_SPIR_V_ARB, code.data(),
static_cast<GLsizei>(code.size_bytes()));
glSpecializeShader(shader.handle, "main", 0, nullptr, nullptr);
if (Settings::values.renderer_debug) {
LogShader(shader.handle);
}
return LinkSeparableProgram(shader.handle);
}
OGLAssemblyProgram CompileProgram(std::string_view code, GLenum target) {
OGLAssemblyProgram program;
glGenProgramsARB(1, &program.handle);
glNamedProgramStringEXT(program.handle, target, GL_PROGRAM_FORMAT_ASCII_ARB,
static_cast<GLsizei>(code.size()), code.data());
if (Settings::values.renderer_debug) {
const auto err = reinterpret_cast<const char*>(glGetString(GL_PROGRAM_ERROR_STRING_NV));
if (err && *err) {
if (std::strstr(err, "error")) {
LOG_CRITICAL(Render_OpenGL, "\n{}", err);
LOG_INFO(Render_OpenGL, "\n{}", code);
} else {
LOG_WARNING(Render_OpenGL, "\n{}", err);
}
}
}
return program;
}
} // namespace OpenGL
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