mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-16 07:21:28 +00:00
125 lines
4.5 KiB
C++
125 lines
4.5 KiB
C++
|
/*
|
||
|
** gl_postprocessstate.cpp
|
||
|
** Render state maintenance
|
||
|
**
|
||
|
**---------------------------------------------------------------------------
|
||
|
** Copyright 2016 Magnus Norddahl
|
||
|
** 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 "templates.h"
|
||
|
#include "gl/system/gl_system.h"
|
||
|
#include "gl/system/gl_interface.h"
|
||
|
#include "gl/data/gl_data.h"
|
||
|
#include "gl/data/gl_vertexbuffer.h"
|
||
|
#include "gl/system/gl_cvars.h"
|
||
|
#include "gl/shaders/gl_shader.h"
|
||
|
#include "gl/renderer/gl_renderer.h"
|
||
|
#include "gl/renderer/gl_postprocessstate.h"
|
||
|
|
||
|
//-----------------------------------------------------------------------------
|
||
|
//
|
||
|
// Saves state modified by post processing shaders
|
||
|
//
|
||
|
//-----------------------------------------------------------------------------
|
||
|
|
||
|
FGLPostProcessState::FGLPostProcessState()
|
||
|
{
|
||
|
glGetIntegerv(GL_ACTIVE_TEXTURE, &activeTex);
|
||
|
glActiveTexture(GL_TEXTURE0);
|
||
|
glGetIntegerv(GL_TEXTURE_BINDING_2D, &textureBinding);
|
||
|
if (gl.flags & RFL_SAMPLER_OBJECTS)
|
||
|
{
|
||
|
glGetIntegerv(GL_SAMPLER_BINDING, &samplerBinding);
|
||
|
glBindSampler(0, 0);
|
||
|
}
|
||
|
|
||
|
glGetBooleanv(GL_BLEND, &blendEnabled);
|
||
|
glGetBooleanv(GL_SCISSOR_TEST, &scissorEnabled);
|
||
|
glGetBooleanv(GL_DEPTH_TEST, &depthEnabled);
|
||
|
glGetBooleanv(GL_MULTISAMPLE, &multisampleEnabled);
|
||
|
glGetIntegerv(GL_CURRENT_PROGRAM, ¤tProgram);
|
||
|
glGetIntegerv(GL_BLEND_EQUATION_RGB, &blendEquationRgb);
|
||
|
glGetIntegerv(GL_BLEND_EQUATION_ALPHA, &blendEquationAlpha);
|
||
|
glGetIntegerv(GL_BLEND_SRC_RGB, &blendSrcRgb);
|
||
|
glGetIntegerv(GL_BLEND_SRC_ALPHA, &blendSrcAlpha);
|
||
|
glGetIntegerv(GL_BLEND_DST_RGB, &blendDestRgb);
|
||
|
glGetIntegerv(GL_BLEND_DST_ALPHA, &blendDestAlpha);
|
||
|
|
||
|
glDisable(GL_MULTISAMPLE);
|
||
|
glDisable(GL_DEPTH_TEST);
|
||
|
glDisable(GL_SCISSOR_TEST);
|
||
|
glDisable(GL_BLEND);
|
||
|
}
|
||
|
|
||
|
//-----------------------------------------------------------------------------
|
||
|
//
|
||
|
// Restores state at the end of post processing
|
||
|
//
|
||
|
//-----------------------------------------------------------------------------
|
||
|
|
||
|
FGLPostProcessState::~FGLPostProcessState()
|
||
|
{
|
||
|
if (blendEnabled)
|
||
|
glEnable(GL_BLEND);
|
||
|
else
|
||
|
glDisable(GL_BLEND);
|
||
|
|
||
|
if (scissorEnabled)
|
||
|
glEnable(GL_SCISSOR_TEST);
|
||
|
else
|
||
|
glDisable(GL_SCISSOR_TEST);
|
||
|
|
||
|
if (depthEnabled)
|
||
|
glEnable(GL_DEPTH_TEST);
|
||
|
else
|
||
|
glDisable(GL_DEPTH_TEST);
|
||
|
|
||
|
if (multisampleEnabled)
|
||
|
glEnable(GL_MULTISAMPLE);
|
||
|
else
|
||
|
glDisable(GL_MULTISAMPLE);
|
||
|
|
||
|
glBlendEquationSeparate(blendEquationRgb, blendEquationAlpha);
|
||
|
glBlendFuncSeparate(blendSrcRgb, blendDestRgb, blendSrcAlpha, blendDestAlpha);
|
||
|
|
||
|
glUseProgram(currentProgram);
|
||
|
|
||
|
glActiveTexture(GL_TEXTURE0);
|
||
|
glBindTexture(GL_TEXTURE_2D, textureBinding);
|
||
|
if (gl.flags & RFL_SAMPLER_OBJECTS)
|
||
|
glBindSampler(0, samplerBinding);
|
||
|
glActiveTexture(activeTex);
|
||
|
}
|