/*
============
FBO_Init
============
*/
void FBO_Init(void)
{
int i;
// int width, height, hdrFormat, multisample;
int hdrFormat, multisample;
ri.Printf(PRINT_ALL, "------- FBO_Init -------\n");
if(!glRefConfig.framebufferObject)
return;
tr.numFBOs = 0;
GL_CheckErrors();
R_IssuePendingRenderCommands();
/* if(glRefConfig.textureNonPowerOfTwo)
{
width = glConfig.vidWidth;
height = glConfig.vidHeight;
}
else
{
width = NextPowerOfTwo(glConfig.vidWidth);
height = NextPowerOfTwo(glConfig.vidHeight);
} */
hdrFormat = GL_RGBA8;
if (r_hdr->integer && glRefConfig.framebufferObject && glRefConfig.textureFloat)
{
hdrFormat = GL_RGBA16F_ARB;
}
qglGetIntegerv(GL_MAX_SAMPLES_EXT, &multisample);
if (r_ext_framebuffer_multisample->integer < multisample)
{
multisample = r_ext_framebuffer_multisample->integer;
}
if (multisample < 2 || !glRefConfig.framebufferBlit)
multisample = 0;
if (multisample != r_ext_framebuffer_multisample->integer)
{
ri.Cvar_SetValue("r_ext_framebuffer_multisample", (float)multisample);
}
// only create a render FBO if we need to resolve MSAA or do HDR
// otherwise just render straight to the screen (tr.renderFbo = NULL)
if (multisample && glRefConfig.framebufferMultisample)
{
tr.renderFbo = FBO_Create("_render", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_Bind(tr.renderFbo);
FBO_CreateBuffer(tr.renderFbo, hdrFormat, 0, multisample);
FBO_CreateBuffer(tr.renderFbo, GL_DEPTH_COMPONENT24_ARB, 0, multisample);
R_CheckFBO(tr.renderFbo);
tr.msaaResolveFbo = FBO_Create("_msaaResolve", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_Bind(tr.msaaResolveFbo);
//FBO_CreateBuffer(tr.msaaResolveFbo, hdrFormat, 0, 0);
FBO_AttachTextureImage(tr.renderImage, 0);
//FBO_CreateBuffer(tr.msaaResolveFbo, GL_DEPTH_COMPONENT24_ARB, 0, 0);
R_AttachFBOTextureDepth(tr.renderDepthImage->texnum);
R_CheckFBO(tr.msaaResolveFbo);
}
else if (r_hdr->integer)
{
tr.renderFbo = FBO_Create("_render", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_Bind(tr.renderFbo);
//FBO_CreateBuffer(tr.renderFbo, hdrFormat, 0, 0);
FBO_AttachTextureImage(tr.renderImage, 0);
//FBO_CreateBuffer(tr.renderFbo, GL_DEPTH_COMPONENT24_ARB, 0, 0);
R_AttachFBOTextureDepth(tr.renderDepthImage->texnum);
R_CheckFBO(tr.renderFbo);
}
// clear render buffer
// this fixes the corrupt screen bug with r_hdr 1 on older hardware
if (tr.renderFbo)
{
FBO_Bind(tr.renderFbo);
qglClearColor( 1, 0, 0.5, 1 );
qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
FBO_Bind(NULL);
}
if (r_drawSunRays->integer)
{
tr.sunRaysFbo = FBO_Create("_sunRays", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_Bind(tr.sunRaysFbo);
FBO_AttachTextureImage(tr.sunRaysImage, 0);
R_AttachFBOTextureDepth(tr.renderDepthImage->texnum);
R_CheckFBO(tr.sunRaysFbo);
}
// FIXME: Don't use separate color/depth buffers for a shadow buffer
if (MAX_DRAWN_PSHADOWS && tr.pshadowMaps[0])
{
for( i = 0; i < MAX_DRAWN_PSHADOWS; i++)
{
tr.pshadowFbos[i] = FBO_Create(va("_shadowmap%d", i), tr.pshadowMaps[i]->width, tr.pshadowMaps[i]->height);
FBO_Bind(tr.pshadowFbos[i]);
//FBO_CreateBuffer(tr.pshadowFbos[i], GL_RGBA8, 0, 0);
FBO_AttachTextureImage(tr.pshadowMaps[i], 0);
FBO_CreateBuffer(tr.pshadowFbos[i], GL_DEPTH_COMPONENT24_ARB, 0, 0);
//R_AttachFBOTextureDepth(tr.textureDepthImage->texnum);
R_CheckFBO(tr.pshadowFbos[i]);
}
}
if (tr.sunShadowDepthImage[0])
{
for ( i = 0; i < 4; i++)
{
tr.sunShadowFbo[i] = FBO_Create("_sunshadowmap", tr.sunShadowDepthImage[i]->width, tr.sunShadowDepthImage[i]->height);
FBO_Bind(tr.sunShadowFbo[i]);
//FBO_CreateBuffer(tr.sunShadowFbo[i], GL_RGBA8, 0, 0);
//FBO_AttachTextureImage(tr.sunShadowImage, 0);
qglDrawBuffer(GL_NONE);
qglReadBuffer(GL_NONE);
//FBO_CreateBuffer(tr.sunShadowFbo, GL_DEPTH_COMPONENT24_ARB, 0, 0);
R_AttachFBOTextureDepth(tr.sunShadowDepthImage[i]->texnum);
R_CheckFBO(tr.sunShadowFbo[i]);
}
tr.screenShadowFbo = FBO_Create("_screenshadow", tr.screenShadowImage->width, tr.screenShadowImage->height);
FBO_Bind(tr.screenShadowFbo);
FBO_AttachTextureImage(tr.screenShadowImage, 0);
R_CheckFBO(tr.screenShadowFbo);
}
for (i = 0; i < 2; i++)
{
tr.textureScratchFbo[i] = FBO_Create(va("_texturescratch%d", i), tr.textureScratchImage[i]->width, tr.textureScratchImage[i]->height);
FBO_Bind(tr.textureScratchFbo[i]);
//FBO_CreateBuffer(tr.textureScratchFbo[i], GL_RGBA8, 0, 0);
FBO_AttachTextureImage(tr.textureScratchImage[i], 0);
R_CheckFBO(tr.textureScratchFbo[i]);
}
{
tr.calcLevelsFbo = FBO_Create("_calclevels", tr.calcLevelsImage->width, tr.calcLevelsImage->height);
FBO_Bind(tr.calcLevelsFbo);
//FBO_CreateBuffer(tr.calcLevelsFbo, hdrFormat, 0, 0);
FBO_AttachTextureImage(tr.calcLevelsImage, 0);
R_CheckFBO(tr.calcLevelsFbo);
}
{
tr.targetLevelsFbo = FBO_Create("_targetlevels", tr.targetLevelsImage->width, tr.targetLevelsImage->height);
FBO_Bind(tr.targetLevelsFbo);
//FBO_CreateBuffer(tr.targetLevelsFbo, hdrFormat, 0, 0);
FBO_AttachTextureImage(tr.targetLevelsImage, 0);
R_CheckFBO(tr.targetLevelsFbo);
}
for (i = 0; i < 2; i++)
{
tr.quarterFbo[i] = FBO_Create(va("_quarter%d", i), tr.quarterImage[i]->width, tr.quarterImage[i]->height);
FBO_Bind(tr.quarterFbo[i]);
//FBO_CreateBuffer(tr.quarterFbo[i], hdrFormat, 0, 0);
FBO_AttachTextureImage(tr.quarterImage[i], 0);
R_CheckFBO(tr.quarterFbo[i]);
}
if (r_ssao->integer)
{
tr.hdrDepthFbo = FBO_Create("_hdrDepth", tr.hdrDepthImage->width, tr.hdrDepthImage->height);
FBO_Bind(tr.hdrDepthFbo);
FBO_AttachTextureImage(tr.hdrDepthImage, 0);
R_CheckFBO(tr.hdrDepthFbo);
tr.screenSsaoFbo = FBO_Create("_screenssao", tr.screenSsaoImage->width, tr.screenSsaoImage->height);
FBO_Bind(tr.screenSsaoFbo);
FBO_AttachTextureImage(tr.screenSsaoImage, 0);
R_CheckFBO(tr.screenSsaoFbo);
}
if (tr.renderCubeImage)
{
tr.renderCubeFbo = FBO_Create("_renderCubeFbo", tr.renderCubeImage->width, tr.renderCubeImage->height);
FBO_Bind(tr.renderCubeFbo);
//FBO_AttachTextureImage(tr.renderCubeImage, 0);
R_AttachFBOTexture2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB, tr.renderCubeImage->texnum, 0);
glState.currentFBO->colorImage[0] = tr.renderCubeImage;
FBO_CreateBuffer(tr.renderCubeFbo, GL_DEPTH_COMPONENT24_ARB, 0, 0);
R_CheckFBO(tr.renderCubeFbo);
}
GL_CheckErrors();
FBO_Bind(NULL);
}
/*
============
FBO_Init
============
*/
void FBO_Init(void)
{
int i;
int hdrFormat, multisample = 0;
ri.Printf(PRINT_ALL, "------- FBO_Init -------\n");
if(!glRefConfig.framebufferObject)
return;
tr.numFBOs = 0;
GL_CheckErrors();
R_IssuePendingRenderCommands();
hdrFormat = GL_RGBA8;
if (r_hdr->integer && glRefConfig.textureFloat)
hdrFormat = GL_RGBA16F_ARB;
if (glRefConfig.framebufferMultisample)
qglGetIntegerv(GL_MAX_SAMPLES, &multisample);
if (r_ext_framebuffer_multisample->integer < multisample)
multisample = r_ext_framebuffer_multisample->integer;
if (multisample < 2 || !glRefConfig.framebufferBlit)
multisample = 0;
if (multisample != r_ext_framebuffer_multisample->integer)
ri.Cvar_SetValue("r_ext_framebuffer_multisample", (float)multisample);
// only create a render FBO if we need to resolve MSAA or do HDR
// otherwise just render straight to the screen (tr.renderFbo = NULL)
if (multisample && glRefConfig.framebufferMultisample)
{
tr.renderFbo = FBO_Create("_render", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_CreateBuffer(tr.renderFbo, hdrFormat, 0, multisample);
FBO_CreateBuffer(tr.renderFbo, GL_DEPTH_COMPONENT24, 0, multisample);
R_CheckFBO(tr.renderFbo);
tr.msaaResolveFbo = FBO_Create("_msaaResolve", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_AttachImage(tr.msaaResolveFbo, tr.renderImage, GL_COLOR_ATTACHMENT0, 0);
FBO_AttachImage(tr.msaaResolveFbo, tr.renderDepthImage, GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.msaaResolveFbo);
}
else if (r_hdr->integer)
{
tr.renderFbo = FBO_Create("_render", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_AttachImage(tr.renderFbo, tr.renderImage, GL_COLOR_ATTACHMENT0, 0);
FBO_AttachImage(tr.renderFbo, tr.renderDepthImage, GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.renderFbo);
}
// clear render buffer
// this fixes the corrupt screen bug with r_hdr 1 on older hardware
if (tr.renderFbo)
{
GL_BindFramebuffer(GL_FRAMEBUFFER, tr.renderFbo->frameBuffer);
qglClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
}
if (tr.screenScratchImage)
{
tr.screenScratchFbo = FBO_Create("screenScratch", tr.screenScratchImage->width, tr.screenScratchImage->height);
FBO_AttachImage(tr.screenScratchFbo, tr.screenScratchImage, GL_COLOR_ATTACHMENT0, 0);
FBO_AttachImage(tr.screenScratchFbo, tr.renderDepthImage, GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.screenScratchFbo);
}
if (tr.sunRaysImage)
{
tr.sunRaysFbo = FBO_Create("_sunRays", tr.renderDepthImage->width, tr.renderDepthImage->height);
FBO_AttachImage(tr.sunRaysFbo, tr.sunRaysImage, GL_COLOR_ATTACHMENT0, 0);
FBO_AttachImage(tr.sunRaysFbo, tr.renderDepthImage, GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.sunRaysFbo);
}
if (MAX_DRAWN_PSHADOWS && tr.pshadowMaps[0])
{
for( i = 0; i < MAX_DRAWN_PSHADOWS; i++)
{
tr.pshadowFbos[i] = FBO_Create(va("_shadowmap%d", i), tr.pshadowMaps[i]->width, tr.pshadowMaps[i]->height);
// FIXME: this next line wastes 16mb with 16x512x512 sun shadow maps, skip if OpenGL 4.3+ or ARB_framebuffer_no_attachments
FBO_CreateBuffer(tr.pshadowFbos[i], GL_RGBA8, 0, 0);
FBO_AttachImage(tr.pshadowFbos[i], tr.pshadowMaps[i], GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.pshadowFbos[i]);
}
}
if (tr.sunShadowDepthImage[0])
{
for (i = 0; i < 4; i++)
{
tr.sunShadowFbo[i] = FBO_Create("_sunshadowmap", tr.sunShadowDepthImage[i]->width, tr.sunShadowDepthImage[i]->height);
// FIXME: this next line wastes 16mb with 4x1024x1024 sun shadow maps, skip if OpenGL 4.3+ or ARB_framebuffer_no_attachments
// This at least gets sun shadows working on older GPUs (Intel)
FBO_CreateBuffer(tr.sunShadowFbo[i], GL_RGBA8, 0, 0);
FBO_AttachImage(tr.sunShadowFbo[i], tr.sunShadowDepthImage[i], GL_DEPTH_ATTACHMENT, 0);
R_CheckFBO(tr.sunShadowFbo[i]);
}
}
if (tr.screenShadowImage)
{
tr.screenShadowFbo = FBO_Create("_screenshadow", tr.screenShadowImage->width, tr.screenShadowImage->height);
FBO_AttachImage(tr.screenShadowFbo, tr.screenShadowImage, GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.screenShadowFbo);
}
if (tr.textureScratchImage[0])
{
for (i = 0; i < 2; i++)
{
tr.textureScratchFbo[i] = FBO_Create(va("_texturescratch%d", i), tr.textureScratchImage[i]->width, tr.textureScratchImage[i]->height);
FBO_AttachImage(tr.textureScratchFbo[i], tr.textureScratchImage[i], GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.textureScratchFbo[i]);
}
}
if (tr.calcLevelsImage)
{
tr.calcLevelsFbo = FBO_Create("_calclevels", tr.calcLevelsImage->width, tr.calcLevelsImage->height);
FBO_AttachImage(tr.calcLevelsFbo, tr.calcLevelsImage, GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.calcLevelsFbo);
}
if (tr.targetLevelsImage)
{
tr.targetLevelsFbo = FBO_Create("_targetlevels", tr.targetLevelsImage->width, tr.targetLevelsImage->height);
FBO_AttachImage(tr.targetLevelsFbo, tr.targetLevelsImage, GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.targetLevelsFbo);
}
if (tr.quarterImage[0])
{
for (i = 0; i < 2; i++)
{
tr.quarterFbo[i] = FBO_Create(va("_quarter%d", i), tr.quarterImage[i]->width, tr.quarterImage[i]->height);
FBO_AttachImage(tr.quarterFbo[i], tr.quarterImage[i], GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.quarterFbo[i]);
}
}
if (tr.hdrDepthImage)
{
tr.hdrDepthFbo = FBO_Create("_hdrDepth", tr.hdrDepthImage->width, tr.hdrDepthImage->height);
FBO_AttachImage(tr.hdrDepthFbo, tr.hdrDepthImage, GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.hdrDepthFbo);
}
if (tr.screenSsaoImage)
{
tr.screenSsaoFbo = FBO_Create("_screenssao", tr.screenSsaoImage->width, tr.screenSsaoImage->height);
FBO_AttachImage(tr.screenSsaoFbo, tr.screenSsaoImage, GL_COLOR_ATTACHMENT0, 0);
R_CheckFBO(tr.screenSsaoFbo);
}
if (tr.renderCubeImage)
{
tr.renderCubeFbo = FBO_Create("_renderCubeFbo", tr.renderCubeImage->width, tr.renderCubeImage->height);
FBO_AttachImage(tr.renderCubeFbo, tr.renderCubeImage, GL_COLOR_ATTACHMENT0, 0);
FBO_CreateBuffer(tr.renderCubeFbo, GL_DEPTH_COMPONENT24_ARB, 0, 0);
R_CheckFBO(tr.renderCubeFbo);
}
GL_CheckErrors();
GL_BindFramebuffer(GL_FRAMEBUFFER, 0);
glState.currentFBO = NULL;
}