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vc4: Fix triangle-guardband-viewport piglit test.

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The original Broadcom driver also did this with the viewport.
This commit is contained in:
Eric Anholt 2014-12-11 20:11:21 -08:00
parent 87db578268
commit 0ae5e002e0
1 changed files with 14 additions and 5 deletions
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19
src/gallium/drivers/vc4/vc4_emit.c
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@ -28,12 +28,21 @@ vc4_emit_state(struct pipe_context *pctx)
{
struct vc4_context *vc4 = vc4_context(pctx);
if (vc4->dirty & VC4_DIRTY_SCISSOR) {
if (vc4->dirty & (VC4_DIRTY_SCISSOR | VC4_DIRTY_VIEWPORT)) {
float *vpscale = vc4->viewport.scale;
float *vptranslate = vc4->viewport.translate;
float vp_minx = -fabs(vpscale[0]) + vptranslate[0];
float vp_maxx = fabs(vpscale[0]) + vptranslate[0];
float vp_miny = -fabs(vpscale[1]) + vptranslate[1];
float vp_maxy = fabs(vpscale[1]) + vptranslate[1];
uint32_t minx = MAX2(vc4->scissor.minx, vp_minx);
uint32_t miny = MAX2(vc4->scissor.miny, vp_miny);
cl_u8(&vc4->bcl, VC4_PACKET_CLIP_WINDOW);
cl_u16(&vc4->bcl, vc4->scissor.minx);
cl_u16(&vc4->bcl, vc4->scissor.miny);
cl_u16(&vc4->bcl, vc4->scissor.maxx - vc4->scissor.minx);
cl_u16(&vc4->bcl, vc4->scissor.maxy - vc4->scissor.miny);
cl_u16(&vc4->bcl, minx);
cl_u16(&vc4->bcl, miny);
cl_u16(&vc4->bcl, MIN2(vc4->scissor.maxx, vp_maxx) - minx);
cl_u16(&vc4->bcl, MIN2(vc4->scissor.maxy, vp_maxy) - miny);
}
if (vc4->dirty & (VC4_DIRTY_RASTERIZER | VC4_DIRTY_ZSA)) {