pcsx2/plugins/GSdx/GSShaderOGL.cpp

378 lines
8.6 KiB
C++

/*
* Copyright (C) 2011-2013 Gregory hainaut
* Copyright (C) 2007-2009 Gabest
*
* This Program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This Program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "stdafx.h"
#include "GSShaderOGL.h"
GSShaderOGL::GSShaderOGL(bool debug, bool sso, bool glsl420) :
m_vs(0),
m_ps(0),
m_gs(0),
m_prog(0),
m_debug_shader(debug),
m_sso(sso),
m_glsl420(glsl420)
{
m_single_prog.clear();
#ifndef ENABLE_GLES
if (sso) {
gl_GenProgramPipelines(1, &m_pipeline);
gl_BindProgramPipeline(m_pipeline);
}
#endif
}
GSShaderOGL::~GSShaderOGL()
{
#ifndef ENABLE_GLES
if (m_sso)
gl_DeleteProgramPipelines(1, &m_pipeline);
#endif
for (auto it = m_single_prog.begin(); it != m_single_prog.end() ; it++) gl_DeleteProgram(it->second);
m_single_prog.clear();
}
void GSShaderOGL::VS(GLuint s)
{
if (m_vs != s)
{
m_vs = s;
#ifndef ENABLE_GLES
if (m_sso)
gl_UseProgramStages(m_pipeline, GL_VERTEX_SHADER_BIT, s);
#endif
}
}
void GSShaderOGL::PS(GLuint s)
{
if (m_ps != s)
{
m_ps = s;
#ifndef ENABLE_GLES
if (m_sso)
gl_UseProgramStages(m_pipeline, GL_FRAGMENT_SHADER_BIT, s);
#endif
}
}
void GSShaderOGL::GS(GLuint s)
{
if (m_gs != s)
{
m_gs = s;
#ifndef ENABLE_GLES
if (m_sso)
gl_UseProgramStages(m_pipeline, GL_GEOMETRY_SHADER_BIT, s);
#endif
}
}
void GSShaderOGL::SetUniformBinding(GLuint prog, GLchar* name, GLuint binding)
{
GLuint index;
index = gl_GetUniformBlockIndex(prog, name);
if (index != GL_INVALID_INDEX) {
gl_UniformBlockBinding(prog, index, binding);
}
}
void GSShaderOGL::SetSamplerBinding(GLuint prog, GLchar* name, GLuint binding)
{
GLint loc = gl_GetUniformLocation(prog, name);
if (loc != -1) {
if (m_sso) {
#ifndef ENABLE_GLES
gl_ProgramUniform1i(prog, loc, binding);
#endif
} else {
gl_Uniform1i(loc, binding);
}
}
}
void GSShaderOGL::SetupUniform()
{
if (m_glsl420) return;
if (m_sso) {
SetUniformBinding(m_vs, "cb20", 20);
SetUniformBinding(m_ps, "cb21", 21);
SetUniformBinding(m_ps, "cb10", 10);
SetUniformBinding(m_ps, "cb11", 11);
SetUniformBinding(m_ps, "cb12", 12);
SetUniformBinding(m_ps, "cb13", 13);
SetSamplerBinding(m_ps, "TextureSampler", 0);
SetSamplerBinding(m_ps, "PaletteSampler", 1);
SetSamplerBinding(m_ps, "RTCopySampler", 2);
} else {
SetUniformBinding(m_prog, "cb20", 20);
SetUniformBinding(m_prog, "cb21", 21);
SetUniformBinding(m_prog, "cb10", 10);
SetUniformBinding(m_prog, "cb11", 11);
SetUniformBinding(m_prog, "cb12", 12);
SetUniformBinding(m_prog, "cb13", 13);
SetSamplerBinding(m_prog, "TextureSampler", 0);
SetSamplerBinding(m_prog, "PaletteSampler", 1);
SetSamplerBinding(m_prog, "RTCopySampler", 2);
}
}
bool GSShaderOGL::ValidateShader(GLuint s)
{
if (!m_debug_shader) return true;
GLint status;
gl_GetShaderiv(s, GL_COMPILE_STATUS, &status);
if (status) return true;
GLint log_length = 0;
gl_GetShaderiv(s, GL_INFO_LOG_LENGTH, &log_length);
if (log_length > 0) {
char* log = new char[log_length];
gl_GetShaderInfoLog(s, log_length, NULL, log);
fprintf(stderr, "%s", log);
delete[] log;
}
fprintf(stderr, "\n");
return false;
}
bool GSShaderOGL::ValidateProgram(GLuint p)
{
if (!m_debug_shader) return true;
GLint status;
gl_GetProgramiv(p, GL_LINK_STATUS, &status);
if (status) return true;
GLint log_length = 0;
gl_GetProgramiv(p, GL_INFO_LOG_LENGTH, &log_length);
if (log_length > 0) {
char* log = new char[log_length];
gl_GetProgramInfoLog(p, log_length, NULL, log);
fprintf(stderr, "%s", log);
delete[] log;
}
fprintf(stderr, "\n");
return false;
}
bool GSShaderOGL::ValidatePipeline(GLuint p)
{
#ifndef ENABLE_GLES
if (!m_debug_shader) return true;
// FIXME: might be mandatory to validate the pipeline
gl_ValidateProgramPipeline(p);
GLint status;
gl_GetProgramPipelineiv(p, GL_VALIDATE_STATUS, &status);
if (status) return true;
GLint log_length = 0;
gl_GetProgramPipelineiv(p, GL_INFO_LOG_LENGTH, &log_length);
if (log_length > 0) {
char* log = new char[log_length];
gl_GetProgramPipelineInfoLog(p, log_length, NULL, log);
fprintf(stderr, "%s", log);
delete[] log;
}
fprintf(stderr, "\n");
#endif
return false;
}
GLuint GSShaderOGL::LinkNewProgram()
{
GLuint p = gl_CreateProgram();
if (m_vs) gl_AttachShader(p, m_vs);
if (m_ps) gl_AttachShader(p, m_ps);
if (m_gs) gl_AttachShader(p, m_gs);
gl_LinkProgram(p);
ValidateProgram(p);
return p;
}
void GSShaderOGL::UseProgram()
{
hash_map<uint64, GLuint >::iterator it;
if (!m_sso) {
// Note: shader are integer lookup pointer. They start from 1 and incr
// every time you create a new shader OR a new program.
// Note2: vs & gs are precompiled at startup. FGLRX and radeon got value < 128.
// We migth be able to pack the value in a 32bits int
// I would need to check the behavior on Nvidia (pause/resume).
uint64 sel = (uint64)m_vs << 40 | (uint64)m_gs << 20 | m_ps;
it = m_single_prog.find(sel);
if (it == m_single_prog.end()) {
m_prog = LinkNewProgram();
m_single_prog[sel] = m_prog;
ValidateProgram(m_prog);
gl_UseProgram(m_prog);
// warning it must be done after the "setup" of the program
SetupUniform();
} else {
m_prog = it->second;
gl_UseProgram(m_prog);
}
} else {
ValidatePipeline(m_pipeline);
SetupUniform();
}
}
std::string GSShaderOGL::GenGlslHeader(const std::string& entry, GLenum type, const std::string& macro)
{
std::string header;
#ifndef ENABLE_GLES
if (GLLoader::found_only_gl30) {
header = "#version 130\n";
} else {
header = "#version 330\n";
}
if (m_glsl420) {
header += "#extension GL_ARB_shading_language_420pack: require\n";
} else {
header += "#define DISABLE_GL42\n";
}
if (m_sso) {
header += "#extension GL_ARB_separate_shader_objects : require\n";
} else {
header += "#define DISABLE_SSO\n";
}
if (GLLoader::found_only_gl30) {
// Need version 330
header += "#extension GL_ARB_explicit_attrib_location : require\n";
// Need version 140
header += "#extension GL_ARB_uniform_buffer_object : require\n";
}
#ifdef ENABLE_OGL_STENCIL_DEBUG
header += "#define ENABLE_OGL_STENCIL_DEBUG 1\n";
#endif
#else
header = "#version 300 es\n";
header += "#define DISABLE_SSO\n";
header += "#define DISABLE_GL42\n";
#endif
// Allow to puts several shader in 1 files
switch (type) {
case GL_VERTEX_SHADER:
header += "#define VERTEX_SHADER 1\n";
break;
#ifndef ENABLE_GLES
case GL_GEOMETRY_SHADER:
header += "#define GEOMETRY_SHADER 1\n";
break;
#endif
case GL_FRAGMENT_SHADER:
header += "#define FRAGMENT_SHADER 1\n";
break;
default: ASSERT(0);
}
// Select the entry point ie the main function
header += format("#define %s main\n", entry.c_str());
header += macro;
return header;
}
GLuint GSShaderOGL::Compile(const std::string& glsl_file, const std::string& entry, GLenum type, const char* glsl_h_code, const std::string& macro_sel)
{
ASSERT(glsl_h_code != NULL);
GLuint program = 0;
#ifndef ENABLE_GLES
if (type == GL_GEOMETRY_SHADER && !GLLoader::found_geometry_shader) {
return program;
}
#endif
// Note it is better to separate header and source file to have the good line number
// in the glsl compiler report
const char* sources[2];
std::string header = GenGlslHeader(entry, type, macro_sel);
int shader_nb = 1;
#if 0
sources[0] = header.c_str();
sources[1] = glsl_h_code;
shader_nb++;
#else
sources[0] = header.append(glsl_h_code).c_str();
#endif
if (m_sso) {
#ifndef ENABLE_GLES
program = gl_CreateShaderProgramv(type, shader_nb, sources);
#endif
} else {
program = gl_CreateShader(type);
gl_ShaderSource(program, shader_nb, sources, NULL);
gl_CompileShader(program);
}
bool status;
if (m_sso)
status = ValidateProgram(program);
else
status = ValidateShader(program);
if (!status) {
// print extra info
fprintf(stderr, "%s (entry %s, prog %d) :", glsl_file.c_str(), entry.c_str(), program);
fprintf(stderr, "\n%s", macro_sel.c_str());
fprintf(stderr, "\n");
}
return program;
}
void GSShaderOGL::Delete(GLuint s)
{
if (m_sso) {
gl_DeleteProgram(s);
} else {
gl_DeleteShader(s);
}
}