/*
* RFB_BlitObject
*
* The target FBO must be equal or greater in both dimentions than
* the currently bound FBO!
*/
void RFB_BlitObject( int dest, int bitMask, int mode )
{
int bits;
int dx, dy, dw, dh;
r_fbo_t *fbo = r_bound_framebuffer_object,
*destfbo = r_framebuffer_objects + dest - 1;
if( !r_bound_framebuffer_object ) {
return;
}
if( !glConfig.ext.framebuffer_blit ) {
return;
}
assert( dest > 0 && dest <= r_num_framebuffer_objects );
if( dest <= 0 || dest > r_num_framebuffer_objects ) {
return;
}
bits = bitMask;
if( !bits ) {
return;
}
RB_ApplyScissor();
switch( mode ) {
case FBO_COPY_CENTREPOS:
dx = (destfbo->width - fbo->width) / 2;
dy = (destfbo->height - fbo->height) / 2;
dw = fbo->width;
dh = fbo->height;
break;
case FBO_COPY_INVERT_Y:
dx = 0;
dy = destfbo->height - fbo->height;
dw = fbo->width;
dh = fbo->height;
break;
default:
dx = 0;
dy = 0;
dw = fbo->width;
dh = fbo->height;
break;
}
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_READ_FRAMEBUFFER_EXT, fbo->objectID );
qglBindFramebufferEXT( GL_DRAW_FRAMEBUFFER_EXT, destfbo->objectID );
qglBlitFramebufferEXT( 0, 0, fbo->width, fbo->height, dx, dy, dx + dw, dy + dh, bits, GL_NEAREST );
qglBindFramebufferEXT( GL_READ_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_DRAW_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fbo->objectID );
assert( qglGetError() == GL_NO_ERROR );
}
/*
* RB_Clear
*/
void RB_Clear( int bits, float r, float g, float b, float a )
{
int state = rb.gl.state;
if( bits & GL_DEPTH_BUFFER_BIT )
state |= GLSTATE_DEPTHWRITE;
if( bits & GL_STENCIL_BUFFER_BIT )
qglClearStencil( 128 );
if( bits & GL_COLOR_BUFFER_BIT )
{
state = ( state & ~GLSTATE_NO_COLORWRITE ) | GLSTATE_ALPHAWRITE;
qglClearColor( r, g, b, a );
}
RB_SetState( state );
RB_ApplyScissor();
qglClear( bits );
RB_DepthRange( 0.0f, 1.0f );
}
/*
* RB_DrawElementsReal
*/
void RB_DrawElementsReal( rbDrawElements_t *de )
{
int firstVert, numVerts, firstElem, numElems;
int numInstances;
if( ! ( r_drawelements->integer || rb.currentEntity == &rb.nullEnt ) || !de )
return;
RB_ApplyScissor();
numVerts = de->numVerts;
numElems = de->numElems;
firstVert = de->firstVert;
firstElem = de->firstElem;
numInstances = de->numInstances;
if( numInstances ) {
if( glConfig.ext.instanced_arrays ) {
// the instance data is contained in vertex attributes
qglDrawElementsInstancedARB( rb.primitive, numElems, GL_UNSIGNED_SHORT,
(GLvoid *)(firstElem * sizeof( elem_t )), numInstances );
rb.stats.c_totalDraws++;
} else if( glConfig.ext.draw_instanced ) {
int i, numUInstances = 0;
// manually update uniform values for instances for currently bound program,
// respecting the MAX_GLSL_UNIFORM_INSTANCES limit
for( i = 0; i < numInstances; i += numUInstances ) {
numUInstances = min( numInstances - i, MAX_GLSL_UNIFORM_INSTANCES );
RB_SetInstanceData( numUInstances, rb.drawInstances + i );
qglDrawElementsInstancedARB( rb.primitive, numElems, GL_UNSIGNED_SHORT,
(GLvoid *)(firstElem * sizeof( elem_t )), numUInstances );
rb.stats.c_totalDraws++;
}
} else {
int i;
// manually update uniform values for instances for currently bound program,
// one by one
for( i = 0; i < numInstances; i++ ) {
RB_SetInstanceData( 1, rb.drawInstances + i );
if( glConfig.ext.draw_range_elements ) {
qglDrawRangeElementsEXT( rb.primitive,
firstVert, firstVert + numVerts - 1, numElems,
GL_UNSIGNED_SHORT, (GLvoid *)(firstElem * sizeof( elem_t )) );
} else {
qglDrawElements( rb.primitive, numElems, GL_UNSIGNED_SHORT,
(GLvoid *)(firstElem * sizeof( elem_t )) );
}
rb.stats.c_totalDraws++;
}
}
}
else {
numInstances = 1;
if( glConfig.ext.draw_range_elements ) {
qglDrawRangeElementsEXT( rb.primitive,
firstVert, firstVert + numVerts - 1, numElems,
GL_UNSIGNED_SHORT, (GLvoid *)(firstElem * sizeof( elem_t )) );
} else {
qglDrawElements( rb.primitive, numElems, GL_UNSIGNED_SHORT,
(GLvoid *)(firstElem * sizeof( elem_t )) );
}
rb.stats.c_totalDraws++;
}
rb.stats.c_totalVerts += numVerts * numInstances;
if( rb.primitive == GL_TRIANGLES ) {
rb.stats.c_totalTris += numElems * numInstances / 3;
}
}
/*
* RFB_BlitObject
*
* The target FBO must be equal or greater in both dimentions than
* the currently bound FBO!
*/
void RFB_BlitObject( int src, int dest, int bitMask, int mode, int filter, int readAtt, int drawAtt ) {
int bits;
int destObj;
int dx, dy, dw, dh;
r_fbo_t scrfbo;
r_fbo_t *fbo;
r_fbo_t *destfbo;
if( !glConfig.ext.framebuffer_blit ) {
return;
}
assert( src >= 0 && src <= r_num_framebuffer_objects );
if( src < 0 || src > r_num_framebuffer_objects ) {
return;
}
if( src == 0 ) {
fbo = &scrfbo;
} else {
fbo = r_framebuffer_objects + src - 1;
}
assert( dest >= 0 && dest <= r_num_framebuffer_objects );
if( dest < 0 || dest > r_num_framebuffer_objects ) {
return;
}
if( dest ) {
destfbo = r_framebuffer_objects + dest - 1;
} else {
destfbo = NULL;
}
bits = bitMask;
if( !bits ) {
return;
}
RB_ApplyScissor();
if( src == 0 ) {
memset( fbo, 0, sizeof( *fbo ) );
fbo->width = glConfig.width;
fbo->height = glConfig.height;
}
if( destfbo ) {
dw = destfbo->width;
dh = destfbo->height;
destObj = destfbo->objectID;
} else {
dw = glConfig.width;
dh = glConfig.height;
destObj = 0;
}
switch( mode ) {
case FBO_COPY_CENTREPOS:
dx = ( dw - fbo->width ) / 2;
dy = ( dh - fbo->height ) / 2;
dw = fbo->width;
dh = fbo->height;
break;
case FBO_COPY_INVERT_Y:
dx = 0;
dy = dh - fbo->height;
dw = fbo->width;
dh = fbo->height;
break;
case FBO_COPY_NORMAL_DST_SIZE:
dx = 0;
dy = 0;
//dw = dw;
//dh = dh;
break;
default:
dx = 0;
dy = 0;
dw = fbo->width;
dh = fbo->height;
break;
}
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_READ_FRAMEBUFFER_EXT, fbo->objectID );
qglBindFramebufferEXT( GL_DRAW_FRAMEBUFFER_EXT, destObj );
#ifndef GL_ES_VERSION_2_0
if( src == 0 ) {
qglReadBuffer( GL_BACK );
qglDrawBuffer( GL_COLOR_ATTACHMENT0_EXT + drawAtt );
} else {
qglReadBuffer( GL_COLOR_ATTACHMENT0_EXT + readAtt );
qglDrawBuffer( GL_COLOR_ATTACHMENT0_EXT + drawAtt );
}
#endif
qglBlitFramebufferEXT( 0, 0, fbo->width, fbo->height, dx, dy, dx + dw, dy + dh, bits, filter );
qglBindFramebufferEXT( GL_READ_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_DRAW_FRAMEBUFFER_EXT, 0 );
qglBindFramebufferEXT( GL_FRAMEBUFFER_EXT, fbo->objectID );
#ifndef GL_ES_VERSION_2_0
if( src == 0 ) {
qglReadBuffer( GL_BACK );
qglDrawBuffer( GL_BACK );
} else {
qglReadBuffer( GL_COLOR_ATTACHMENT0_EXT );
qglDrawBuffer( GL_COLOR_ATTACHMENT0_EXT );
}
#endif
assert( qglGetError() == GL_NO_ERROR );
}