zdoom/raze
0
0
Fork 0
mirror of https://github.com/ZDoom/Raze.git synced 2025-06-02 02:01:31 +00:00
Code Issues Projects Releases Packages Wiki Activity

- moved the main shader and its entire uniform maintenance into the backend.

Browse source
This commit is contained in:
Christoph Oelckers 2019-10-05 12:28:08 +02:00
parent 50c2065425
commit bd4e4834e3
17 changed files with 650 additions and 592 deletions
Download patch file Download diff file Expand all files Collapse all files

179
source/glbackend/gl_shader.cpp Normal file
View file

@ -0,0 +1,179 @@
/*
** gl_shader.cpp
**
** GLSL shader handling
**
**---------------------------------------------------------------------------
** Copyright 2004-2019 Christoph Oelckers
** All rights reserved.
**
** Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions
** are met:
**
** 1. Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** 2. Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in the
** documentation and/or other materials provided with the distribution.
** 3. The name of the author may not be used to endorse or promote products
** derived from this software without specific prior written permission.
** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be
** covered by the terms of the GNU Lesser General Public License as published
** by the Free Software Foundation; either version 2.1 of the License, or (at
** your option) any later version.
** 5. Full disclosure of the entire project's source code, except for third
** party libraries is mandatory. (NOTE: This clause is non-negotiable!)
**
** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
**---------------------------------------------------------------------------
**
*/
#include <memory>
#include "glbackend.h"
#include "glad/glad.h"
#include "gl_shader.h"
#include "zstring.h"
#include "baselayer.h"
//==========================================================================
//
//
//
//==========================================================================
bool FShader::Load(const char * name, const char * vert_prog, const char * frag_prog)
{
FString error;
static char buffer[10000];
hVertProg = glCreateShader(GL_VERTEX_SHADER);
hFragProg = glCreateShader(GL_FRAGMENT_SHADER);
glShaderSource(hVertProg, 1, &vert_prog, nullptr);
glShaderSource(hFragProg, 1, &frag_prog, nullptr);
glCompileShader(hVertProg);
glCompileShader(hFragProg);
hShader = glCreateProgram();
glAttachShader(hShader, hVertProg);
glAttachShader(hShader, hFragProg);
//glBindAttribLocation(hShader, VATTR_VERTEX, "aPosition");
//glBindAttribLocation(hShader, VATTR_TEXCOORD, "aTexCoord");
//glBindAttribLocation(hShader, VATTR_COLOR, "aColor");
//glBindAttribLocation(hShader, VATTR_VERTEX2, "aVertex2");
glLinkProgram(hShader);
glGetShaderInfoLog(hVertProg, 10000, NULL, buffer);
if (*buffer)
{
error << "Vertex shader:\n" << buffer << "\n";
}
glGetShaderInfoLog(hFragProg, 10000, NULL, buffer);
if (*buffer)
{
error << "Fragment shader:\n" << buffer << "\n";
}
glGetProgramInfoLog(hShader, 10000, NULL, buffer);
if (*buffer)
{
error << "Linking:\n" << buffer << "\n";
}
int linked;
glGetProgramiv(hShader, GL_LINK_STATUS, &linked);
if (linked == 0)
{
// only print message if there's an error.
initprintf("Init Shader '%s':\n%s\n", name, error.GetChars());
return false;
}
return true;
}
//==========================================================================
//
//
//
//==========================================================================
FShader::~FShader()
{
glDeleteProgram(hShader);
glDeleteShader(hVertProg);
glDeleteShader(hFragProg);
}
//==========================================================================
//
//
//
//==========================================================================
bool FShader::Bind()
{
glUseProgram(hShader);
return true;
}
//==========================================================================
//
//
//
//==========================================================================
bool PolymostShader::Load(const char * name, const char * vert_prog, const char * frag_prog)
{
if (!FShader::Load(name, vert_prog, frag_prog)) return false;
PalswapPos.Init(hShader, "u_palswapPos");
PalswapSize.Init(hShader, "u_palswapSize");
Clamp.Init(hShader, "u_clamp");
Shade.Init(hShader, "u_shade");
NumShades.Init(hShader, "u_numShades");
VisFactor.Init(hShader, "u_visFactor");
FogEnabled.Init(hShader, "u_fogEnabled");
UseColorOnly.Init(hShader, "u_useColorOnly");
UsePalette.Init(hShader, "u_usePalette");
UseDetailMapping.Init(hShader, "u_useDetailMapping");
UseGlowMapping.Init(hShader, "u_useGlowMapping");
NPOTEmulation.Init(hShader, "u_npotEmulation");
NPOTEmulationFactor.Init(hShader, "u_npotEmulationFactor");
NPOTEmulationXOffset.Init(hShader, "u_npotEmulationXOffset");
Brightness.Init(hShader, "u_brightness");
RotMatrix.Init(hShader, "u_rotMatrix");
ShadeInterpolate.Init(hShader, "u_shadeInterpolate");
glUseProgram(hShader);
int SamplerLoc;
SamplerLoc = glGetUniformLocation(hShader, "s_texture");
glUniform1i(SamplerLoc, 0);
SamplerLoc = glGetUniformLocation(hShader, "s_palswap");
glUniform1i(SamplerLoc, 1);
SamplerLoc = glGetUniformLocation(hShader, "s_palette");
glUniform1i(SamplerLoc, 2);
SamplerLoc = glGetUniformLocation(hShader, "s_detail");
glUniform1i(SamplerLoc, 3);
SamplerLoc = glGetUniformLocation(hShader, "s_glow");
glUniform1i(SamplerLoc, 4);
glUseProgram(0);
return true;
}