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Bug #10438: Fix 965 XV when sourcing from less than the full image. 

Bob deinterlacing in MythTV, and the zoom options in totem would result in
attempting to source from outside the video instead of scaling appropriately.
This commit is contained in:
Eric Anholt 2007-04-17 10:50:02 -07:00
parent ac9181c014
commit 37ee68a95c
1 changed files with 5 additions and 5 deletions
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10
src/i965_video.c
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@ -172,6 +172,7 @@ I965DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
struct brw_instruction *ps_kernel;
struct brw_instruction *sip_kernel;
float *vb;
float src_scale_x, src_scale_y;
CARD32 *binding_table;
Bool first_output = TRUE;
int dest_surf_offset, src_surf_offset, src_sampler_offset, vs_offset;
@ -672,6 +673,10 @@ I965DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
dxo = dstRegion->extents.x1;
dyo = dstRegion->extents.y1;
/* Use normalized texture coordinates */
src_scale_x = ((float)src_w / width) / (float)drw_w;
src_scale_y = ((float)src_h / height) / (float)drw_h;
pbox = REGION_RECTS(dstRegion);
nbox = REGION_NUM_RECTS(dstRegion);
while (nbox--) {
@ -680,7 +685,6 @@ I965DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
int box_x2 = pbox->x2;
int box_y2 = pbox->y2;
int i;
float src_scale_x, src_scale_y;
if (!first_output) {
/* Since we use the same little vertex buffer over and over, sync
@ -691,10 +695,6 @@ I965DisplayVideoTextured(ScrnInfoPtr pScrn, I830PortPrivPtr pPriv, int id,
pbox++;
/* Use normalized texture coordinates */
src_scale_x = (float)1.0 / (float)drw_w;
src_scale_y = (float)1.0 / (float)drw_h;
i = 0;
vb[i++] = (box_x2 - dxo) * src_scale_x;
vb[i++] = (box_y2 - dyo) * src_scale_y;