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OpenGL State Caching.

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This commit is contained in:
Jonathas Costa
2020-07-31 15:59:28 -04:00
parent 11f537e2e2
commit 393fbdca3d
20 changed files with 95 additions and 365 deletions
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36
src/rendering/framebufferrenderer.cpp
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@@ -43,6 +43,7 @@
#include <ghoul/misc/profiling.h>
#include <ghoul/opengl/ghoul_gl.h>
#include <ghoul/opengl/programobject.h>
#include <ghoul/opengl/openglstatecache.h>
#include <ghoul/opengl/textureunit.h>
#include <fstream>
#include <string>
@@ -474,8 +475,22 @@ void FramebufferRenderer::initialize() {
global::raycasterManager.addListener(*this);
global::deferredcasterManager.addListener(*this);
// Set Default Rendering OpenGL State
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_defaultFBO);
glEnablei(GL_BLEND, 0);
glDisablei(GL_BLEND, 1);
glDisablei(GL_BLEND, 2);
glClampColor(GL_CLAMP_READ_COLOR, GL_FALSE);
glEnable(GL_DEPTH_TEST);
// Default GL State for Blending
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
// Save State in Cache
global::renderEngine.openglStateCache().loadCurrentGLState();
}
void FramebufferRenderer::deinitialize() {
@@ -1159,22 +1174,14 @@ void FramebufferRenderer::updateDownscaledVolume() {
void FramebufferRenderer::render(Scene* scene, Camera* camera, float blackoutFactor) {
ZoneScoped
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_defaultFBO);
GLint viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport);
global::renderEngine.openglStateCache().viewPort(viewport);
{
// Set OpenGL default rendering state
ZoneScopedN("Setting OpenGL state")
// Set Render Pipeline State
global::renderEngine.openglStateCache().setCachedStates();
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &_defaultFBO);
glEnablei(GL_BLEND, 0);
glDisablei(GL_BLEND, 1);
glDisablei(GL_BLEND, 2);
glClampColor(GL_CLAMP_READ_COLOR, GL_FALSE);
glEnable(GL_DEPTH_TEST);
}
_pingPongIndex = 0;
// Measurements cache variable
@@ -1531,6 +1538,9 @@ void FramebufferRenderer::performDeferredTasks(
void FramebufferRenderer::setResolution(glm::ivec2 res) {
_resolution = std::move(res);
_dirtyResolution = true;
GLint newViewPortCoors[4];
glGetIntegerv(GL_VIEWPORT, newViewPortCoors);
global::renderEngine.openglStateCache().setViewPortState(newViewPortCoors);
}
void FramebufferRenderer::setDisableHDR(bool disable) {