/*
* RFB_AttachTextureToObject
*/
void RFB_AttachTextureToObject( int object, image_t *texture )
{
r_fbo_t *fbo;
int attachment;
assert( object > 0 && object <= r_num_framebuffer_objects );
if( object <= 0 || object > r_num_framebuffer_objects ) {
return;
}
assert( texture != NULL );
if( !texture ) {
return;
}
fbo = r_framebuffer_objects + object - 1;
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fbo->objectID );
if( texture->flags & IT_DEPTH ) {
attachment = GL_DEPTH_ATTACHMENT_EXT;
fbo->depthTexture = texture;
} else {
attachment = GL_COLOR_ATTACHMENT0_EXT;
fbo->colorTexture = texture;
#ifndef GL_ES_VERSION_2_0
qglDrawBuffer( GL_COLOR_ATTACHMENT0_EXT );
qglReadBuffer( GL_COLOR_ATTACHMENT0_EXT );
#endif
}
texture->fbo = object;
// attach texture
qglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_2D, texture->texnum, 0 );
if( ( texture->flags & ( IT_DEPTH|IT_STENCIL ) ) == ( IT_DEPTH|IT_STENCIL ) ) {
qglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, texture->texnum, 0 );
}
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, r_bound_framebuffer_objectID ? r_bound_framebuffer_object->objectID : 0 );
}
/*
=============
RB_ExportCubemaps
=============
*/
const void *RB_ExportCubemaps(const void *data)
{
const exportCubemapsCommand_t *cmd = data;
// finish any 2D drawing if needed
if (tess.numIndexes)
RB_EndSurface();
if (!glRefConfig.framebufferObject || !tr.world || tr.numCubemaps == 0)
{
// do nothing
ri.Printf(PRINT_ALL, "Nothing to export!\n");
return (const void *)(cmd + 1);
}
if (cmd)
{
FBO_t *oldFbo = glState.currentFBO;
int sideSize = r_cubemapSize->integer * r_cubemapSize->integer * 4;
byte *cubemapPixels = ri.Malloc(sideSize * 6);
int i, j;
FBO_Bind(tr.renderCubeFbo);
for (i = 0; i < tr.numCubemaps; i++)
{
char filename[MAX_QPATH];
cubemap_t *cubemap = &tr.cubemaps[i];
char *p = cubemapPixels;
for (j = 0; j < 6; j++)
{
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_CUBE_MAP_POSITIVE_X + j, cubemap->image->texnum, 0);
qglReadPixels(0, 0, r_cubemapSize->integer, r_cubemapSize->integer, GL_RGBA, GL_UNSIGNED_BYTE, p);
p += sideSize;
}
Com_sprintf(filename, MAX_QPATH, "cubemaps/%s/%03d.dds", tr.world->baseName, i);
R_SaveDDS(filename, cubemapPixels, r_cubemapSize->integer, r_cubemapSize->integer, 6);
ri.Printf(PRINT_ALL, "Saved cubemap %d as %s\n", i, filename);
}
FBO_Bind(oldFbo);
ri.Free(cubemapPixels);
}
return (const void *)(cmd + 1);
}
/*
=================
R_AttachFBOTexture2D
=================
*/
void R_AttachFBOTexture2D(int target, int texId, int index)
{
if(target != GL_TEXTURE_2D && (target < GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB || target > GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB))
{
ri.Printf(PRINT_WARNING, "R_AttachFBOTexture2D: invalid target %i\n", target);
return;
}
if(index < 0 || index >= glRefConfig.maxColorAttachments)
{
ri.Printf(PRINT_WARNING, "R_AttachFBOTexture2D: invalid attachment index %i\n", index);
return;
}
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT + index, target, texId, 0);
}
GLvoid APIENTRY GLDSA_NamedFramebufferTexture2D(GLuint framebuffer,
GLenum attachment, GLenum textarget, GLuint texture, GLint level)
{
GL_BindFramebuffer(GL_FRAMEBUFFER_EXT, framebuffer);
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, attachment, textarget, texture, level);
}
/*
=================
RB_BeginDrawingView
Any mirrored or portaled views have already been drawn, so prepare
to actually render the visible surfaces for this view
=================
*/
void RB_BeginDrawingView (void) {
int clearBits = 0;
// sync with gl if needed
if ( r_finish->integer == 1 && !glState.finishCalled ) {
qglFinish ();
glState.finishCalled = qtrue;
}
if ( r_finish->integer == 0 ) {
glState.finishCalled = qtrue;
}
// we will need to change the projection matrix before drawing
// 2D images again
backEnd.projection2D = qfalse;
if (glRefConfig.framebufferObject)
{
// FIXME: HUGE HACK: render to the screen fbo if we've already postprocessed the frame and aren't drawing more world
// drawing more world check is in case of double renders, such as skyportals
if (backEnd.viewParms.targetFbo == NULL)
{
if (!tr.renderFbo || (backEnd.framePostProcessed && (backEnd.refdef.rdflags & RDF_NOWORLDMODEL)))
{
FBO_Bind(NULL);
}
else
{
FBO_Bind(tr.renderFbo);
}
}
else
{
FBO_Bind(backEnd.viewParms.targetFbo);
// FIXME: hack for cubemap testing
if (tr.renderCubeFbo && backEnd.viewParms.targetFbo == tr.renderCubeFbo)
{
//qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_CUBE_MAP_POSITIVE_X + backEnd.viewParms.targetFboLayer, backEnd.viewParms.targetFbo->colorImage[0]->texnum, 0);
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_CUBE_MAP_POSITIVE_X + backEnd.viewParms.targetFboLayer, tr.cubemaps[backEnd.viewParms.targetFboCubemapIndex]->texnum, 0);
}
}
}
//
// set the modelview matrix for the viewer
//
SetViewportAndScissor();
// ensures that depth writes are enabled for the depth clear
GL_State( GLS_DEFAULT );
// clear relevant buffers
clearBits = GL_DEPTH_BUFFER_BIT;
if ( r_measureOverdraw->integer || r_shadows->integer == 2 )
{
clearBits |= GL_STENCIL_BUFFER_BIT;
}
if ( r_fastsky->integer && !( backEnd.refdef.rdflags & RDF_NOWORLDMODEL ) )
{
clearBits |= GL_COLOR_BUFFER_BIT; // FIXME: only if sky shaders have been used
#ifdef _DEBUG
qglClearColor( 0.8f, 0.7f, 0.4f, 1.0f ); // FIXME: get color of sky
#else
qglClearColor( 0.0f, 0.0f, 0.0f, 1.0f ); // FIXME: get color of sky
#endif
}
// clear to white for shadow maps
if (backEnd.viewParms.flags & VPF_SHADOWMAP)
{
clearBits |= GL_COLOR_BUFFER_BIT;
qglClearColor( 1.0f, 1.0f, 1.0f, 1.0f );
}
// clear to black for cube maps
if (tr.renderCubeFbo && backEnd.viewParms.targetFbo == tr.renderCubeFbo)
{
clearBits |= GL_COLOR_BUFFER_BIT;
qglClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
}
qglClear( clearBits );
if ( ( backEnd.refdef.rdflags & RDF_HYPERSPACE ) )
{
RB_Hyperspace();
return;
}
else
{
backEnd.isHyperspace = qfalse;
}
glState.faceCulling = -1; // force face culling to set next time
// we will only draw a sun if there was sky rendered in this view
backEnd.skyRenderedThisView = qfalse;
// clip to the plane of the portal
if ( backEnd.viewParms.isPortal ) {
#if 0
float plane[4];
double plane2[4];
plane[0] = backEnd.viewParms.portalPlane.normal[0];
plane[1] = backEnd.viewParms.portalPlane.normal[1];
plane[2] = backEnd.viewParms.portalPlane.normal[2];
plane[3] = backEnd.viewParms.portalPlane.dist;
plane2[0] = DotProduct (backEnd.viewParms.or.axis[0], plane);
plane2[1] = DotProduct (backEnd.viewParms.or.axis[1], plane);
plane2[2] = DotProduct (backEnd.viewParms.or.axis[2], plane);
plane2[3] = DotProduct (plane, backEnd.viewParms.or.origin) - plane[3];
#endif
GL_SetModelviewMatrix( s_flipMatrix );
}
}
/*
=================
R_AttachFBOTexturePackedDepthStencil
=================
*/
void R_AttachFBOTexturePackedDepthStencil(int texId)
{
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, texId, 0);
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, texId, 0);
}
/*
=================
R_AttachFBOTextureDepth
=================
*/
void R_AttachFBOTextureDepth(int texId)
{
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_TEXTURE_2D, texId, 0);
}
/**
* @brief create a new framebuffer object
* @param[in] width The width of the framebuffer
* @param[in] height The height of the framebuffer
* @param[in] ntextures The amount of textures for this framebuffer. See also the filters array.
* @param[in] depth Also generate a depth buffer
* @param[in] halfFloat Use half float pixel format
* @param[in] filters Filters for the textures. Must have @c ntextures entries
*/
r_framebuffer_t * R_CreateFramebuffer (int width, int height, int ntextures, bool depth, bool halfFloat, unsigned int *filters)
{
r_framebuffer_t *buf;
int i;
if (!r_state.frameBufferObjectsInitialized) {
Com_Printf("Warning: framebuffer creation failed; framebuffers not initialized!\n");
return NULL;
}
if (frameBufferObjectCount >= lengthof(frameBufferObjects)) {
Com_Printf("Warning: framebuffer creation failed; already created too many framebuffers!\n");
return NULL;
}
buf = &frameBufferObjects[frameBufferObjectCount++];
OBJZERO(*buf);
if (ntextures > r_config.maxDrawBuffers) {
Com_Printf("Couldn't allocate requested number of drawBuffers in R_SetupFramebuffer!\n");
ntextures = r_config.maxDrawBuffers;
}
Vector4Clear(buf->clearColor);
buf->width = width;
buf->height = height;
R_SetupViewport(buf, 0, 0, width, height);
buf->nTextures = ntextures;
buf->textures = Mem_AllocTypeN(unsigned int, ntextures);
buf->pixelFormat = halfFloat ? GL_RGBA16F_ARB : GL_RGBA8;
buf->byteFormat = halfFloat ? GL_HALF_FLOAT_ARB : GL_UNSIGNED_BYTE;
/* Presence of depth buffer indicates render target that could use antialiasing*/
if (depth) {
/** @todo also check if we are running on older (SM2.0) hardware, which doesn't support antialiased MRT */
if (qglRenderbufferStorageMultisampleEXT && qglBlitFramebuffer) {
int samples = std::min(4, std::max(0, r_multisample->integer));
if (samples>1)
buf->samples = samples;
}
}
for (i = 0; i < buf->nTextures; i++) {
buf->textures[i] = R_GetFreeFBOTexture();
glBindTexture(GL_TEXTURE_2D, buf->textures[i]);
glTexImage2D(GL_TEXTURE_2D, 0, buf->pixelFormat, buf->width, buf->height, 0, GL_RGBA, buf->byteFormat, 0);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filters[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
qglGenerateMipmapEXT(GL_TEXTURE_2D);
if (r_config.anisotropic)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_ANISOTROPY_EXT, r_config.maxAnisotropic);
R_CheckError();
}
glBindTexture(GL_TEXTURE_2D, 0);
/* create FBO itself */
qglGenFramebuffersEXT(1, &buf->fbo);
R_CheckError();
qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, buf->fbo);
/* create&attach depth renderbuffer */
if (depth) {
qglGenRenderbuffersEXT(1, &buf->depth);
qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, buf->depth);
if (buf->samples)
qglRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, buf->samples, GL_DEPTH_COMPONENT, buf->width, buf->height);
else
qglRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH_COMPONENT, buf->width, buf->height);
qglFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, buf->depth);
} else {
buf->depth = 0;
}
/* create multisample color buffers if needed */
if (buf->samples) {
/* generate color buffers */
for (i = 0; i < buf->nTextures; i++) {
unsigned colorbuffer;
qglGenRenderbuffersEXT(1, &colorbuffer);
qglBindRenderbufferEXT(GL_RENDERBUFFER_EXT, colorbuffer);
qglRenderbufferStorageMultisampleEXT(GL_RENDERBUFFER_EXT, buf->samples, buf->pixelFormat, buf->width, buf->height);
qglFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, colorAttachments[i], GL_RENDERBUFFER_EXT, colorbuffer);
R_CheckError();
}
/* proxy framebuffer object for resolving MSAA */
qglGenFramebuffersEXT(1, &buf->proxyFBO);
R_CheckError();
qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, buf->proxyFBO);
}
/* Whether multisampling was enabled or not, current FBO should be populated with render-to-texture bindings */
for (i = 0; i < buf->nTextures; i++) {
qglFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, colorAttachments[i], GL_TEXTURE_2D, buf->textures[i], 0);
R_CheckError();
}
R_CheckError();
/* unbind the framebuffer and return to default state */
qglBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0);
return buf;
}
/*
* RFB_AttachTextureToObject
*/
bool RFB_AttachTextureToObject( int object, bool depth, int target, image_t *texture ) {
r_fbo_t *fbo;
int attachment;
GLuint texnum = 0;
assert( object > 0 && object <= r_num_framebuffer_objects );
if( object <= 0 || object > r_num_framebuffer_objects ) {
return false;
}
if( target < 0 || target >= MAX_FRAMEBUFFER_COLOR_ATTACHMENTS ) {
return false;
}
if( target > 0 && !glConfig.ext.draw_buffers ) {
return false;
}
fbo = r_framebuffer_objects + object - 1;
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fbo->objectID );
bind:
if( depth ) {
attachment = GL_DEPTH_ATTACHMENT_EXT;
if( texture ) {
assert( texture->flags & IT_DEPTH );
texnum = texture->texnum;
texture->fbo = object;
}
} else {
#ifndef GL_ES_VERSION_2_0
const GLenum fboBuffers[8] = {
GL_COLOR_ATTACHMENT0_EXT,
GL_COLOR_ATTACHMENT1_EXT,
GL_COLOR_ATTACHMENT2_EXT,
GL_COLOR_ATTACHMENT3_EXT,
GL_COLOR_ATTACHMENT4_EXT,
GL_COLOR_ATTACHMENT5_EXT,
GL_COLOR_ATTACHMENT6_EXT,
GL_COLOR_ATTACHMENT7_EXT,
};
#endif
attachment = GL_COLOR_ATTACHMENT0_EXT + target;
#ifndef GL_ES_VERSION_2_0
if( target > 0 && texture ) {
qglDrawBuffersARB( target + 1, fboBuffers );
} else {
if( glConfig.ext.draw_buffers ) {
qglDrawBuffersARB( 0, fboBuffers );
}
qglDrawBuffer( GL_COLOR_ATTACHMENT0_EXT );
qglReadBuffer( GL_COLOR_ATTACHMENT0_EXT );
}
#endif
if( texture ) {
assert( !( texture->flags & IT_DEPTH ) );
texnum = texture->texnum;
texture->fbo = object;
}
}
// attach texture
qglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, attachment, GL_TEXTURE_2D, texnum, 0 );
if( texture ) {
if( ( texture->flags & ( IT_DEPTH | IT_STENCIL ) ) == ( IT_DEPTH | IT_STENCIL ) ) {
qglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, texnum, 0 );
}
}
else {
if( depth ) {
qglFramebufferTexture2DEXT( GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_TEXTURE_2D, texnum, 0 );
}
}
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, r_bound_framebuffer_objectID ? r_bound_framebuffer_object->objectID : 0 );
// check framebuffer status and unbind if failed
if( !RFB_CheckObjectStatus() ) {
if( texture ) {
texture = NULL;
goto bind;
}
return false;
}
if( depth ) {
fbo->depthTexture = texture;
} else {
fbo->colorTexture[target] = texture;
}
return true;
}