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New code for setting cliprects when rendering to a FBO.

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This commit is contained in:
Brian Paul 2006-03-15 17:50:40 +00:00
parent d9f31f16c0
commit e8e6374a16
2 changed files with 48 additions and 3 deletions
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50
src/mesa/drivers/dri/i915/intel_buffers.c
View file

@ -117,6 +117,31 @@ static void intelBufferSize(GLframebuffer *buffer,
}
/**
* Update the following fields for rendering to a user-created FBO:
* intel->numClipRects
* intel->pClipRects
* intel->drawX
* intel->drawY
*/
static void intelSetRenderbufferClipRects( struct intel_context *intel )
{
intel->fboRect.x1 = 0;
intel->fboRect.y1 = 0;
intel->fboRect.x2 = intel->ctx.DrawBuffer->Width;
intel->fboRect.y2 = intel->ctx.DrawBuffer->Height;
intel->numClipRects = 1;
intel->pClipRects = &intel->fboRect;
intel->drawX = 0;
intel->drawY = 0;
}
/**
* As above, but for rendering to front buffer of a window.
* \sa intelSetRenderbufferClipRects
*/
static void intelSetFrontClipRects( struct intel_context *intel )
{
__DRIdrawablePrivate *dPriv = intel->driDrawable;
@ -130,6 +155,9 @@ static void intelSetFrontClipRects( struct intel_context *intel )
}
/**
* As above, but for rendering to back buffer of a window.
*/
static void intelSetBackClipRects( struct intel_context *intel )
{
__DRIdrawablePrivate *dPriv = intel->driDrawable;
@ -137,11 +165,13 @@ static void intelSetBackClipRects( struct intel_context *intel )
if (!dPriv) return;
if (intel->sarea->pf_enabled == 0 && dPriv->numBackClipRects == 0) {
/* use the front clip rects */
intel->numClipRects = dPriv->numClipRects;
intel->pClipRects = dPriv->pClipRects;
intel->drawX = dPriv->x;
intel->drawY = dPriv->y;
} else {
/* use the back clip rects */
intel->numClipRects = dPriv->numBackClipRects;
intel->pClipRects = dPriv->pBackClipRects;
intel->drawX = dPriv->backX;
@ -183,8 +213,13 @@ static void intelSetBackClipRects( struct intel_context *intel )
void intelWindowMoved( struct intel_context *intel )
{
if (!intel->ctx.DrawBuffer) {
/* when would this happen? -BP */
intelSetFrontClipRects( intel );
}
else if (intel->ctx.DrawBuffer->Name != 0) {
/* drawing to user-created FBO */
intelSetRenderbufferClipRects(intel);
}
else {
switch (intel->ctx.DrawBuffer->_ColorDrawBufferMask[0]) {
case BUFFER_BIT_FRONT_LEFT:
@ -460,8 +495,10 @@ static void intelDrawBuffer(GLcontext *ctx, GLenum mode )
struct intel_context *intel = intel_context(ctx);
int front = 0;
if (!ctx->DrawBuffer)
if (!ctx->DrawBuffer) {
/* XXX I don't think this should ever happen. -BP */
return;
}
switch ( ctx->DrawBuffer->_ColorDrawBufferMask[0] ) {
case BUFFER_BIT_FRONT_LEFT:
@ -473,6 +510,7 @@ static void intelDrawBuffer(GLcontext *ctx, GLenum mode )
FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_FALSE );
break;
default:
/* GL_FRONT_AND_BACK, GL_NONE, etc */
FALLBACK( intel, INTEL_FALLBACK_DRAW_BUFFER, GL_TRUE );
return;
}
@ -480,8 +518,14 @@ static void intelDrawBuffer(GLcontext *ctx, GLenum mode )
if ( intel->sarea->pf_current_page == 1 )
front ^= 1;
intelSetFrontClipRects( intel );
if (ctx->DrawBuffer->Name == 0) {
/* drawing to window system buffer */
intelSetFrontClipRects( intel );
}
else {
/* drawing to user-created FBO */
intelSetRenderbufferClipRects(intel);
}
if (front) {
if (intel->draw_region != intel->front_region) {

1
src/mesa/drivers/dri/i915/intel_context.h
View file

@ -236,6 +236,7 @@ struct intel_context
int drawY;
GLuint numClipRects; /* cliprects for that buffer */
drm_clip_rect_t *pClipRects;
drm_clip_rect_t fboRect; /* used for FBO rendering */
int perf_boxes;
int do_irqs;