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authorBrian Paul <brianp@vmware.com>2009-03-20 20:25:34 -0600
committerBrian Paul <brianp@vmware.com>2009-03-20 20:29:07 -0600
commit401cbd0d2365e5b2d371a2a01edf1cecca4a99dd (patch)
tree1db298c9d76bd4bad0831cdabf12b635e2941903 /src/gallium
parent1f45ae0813f72fa92f52e0ebc440922362dc7cce (diff)
gallium: remove use of origin_lower_left
This was used to indicate OpenGL's lower-left origin for fragment window coordinates for polygon stipple and gl_FragCoord. Now: - fragment coordinate origin is always upper-left corner - GL polygon stipple is inverted and shifted before given to gallium - GL fragment programs that use INPUT[WPOS] are modified to use an inverted window coord which is placed in a temp register. Note: the origin_lower_left field still exists in pipe_rasterizer_state. Remove it when all the drivers, etc. no longer reference it.
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/drivers/softpipe/sp_quad_stipple.c18
-rw-r--r--src/gallium/drivers/softpipe/sp_setup.c13
2 files changed, 6 insertions, 25 deletions
diff --git a/src/gallium/drivers/softpipe/sp_quad_stipple.c b/src/gallium/drivers/softpipe/sp_quad_stipple.c
index 05e862f097..07162db7b6 100644
--- a/src/gallium/drivers/softpipe/sp_quad_stipple.c
+++ b/src/gallium/drivers/softpipe/sp_quad_stipple.c
@@ -22,21 +22,11 @@ stipple_quad(struct quad_stage *qs, struct quad_header *quad)
if (quad->input.prim == QUAD_PRIM_TRI) {
struct softpipe_context *softpipe = qs->softpipe;
/* need to invert Y to index into OpenGL's stipple pattern */
- int y0, y1;
- uint stipple0, stipple1;
const int col0 = quad->input.x0 % 32;
-
- if (softpipe->rasterizer->origin_lower_left) {
- y0 = softpipe->framebuffer.height - 1 - quad->input.y0;
- y1 = y0 - 1;
- }
- else {
- y0 = quad->input.y0;
- y1 = y0 + 1;
- }
-
- stipple0 = softpipe->poly_stipple.stipple[y0 % 32];
- stipple1 = softpipe->poly_stipple.stipple[y1 % 32];
+ const int y0 = quad->input.y0;
+ const int y1 = y0 + 1;
+ const uint stipple0 = softpipe->poly_stipple.stipple[y0 % 32];
+ const uint stipple1 = softpipe->poly_stipple.stipple[y1 % 32];
/* turn off quad mask bits that fail the stipple test */
if ((stipple0 & (bit31 >> col0)) == 0)
diff --git a/src/gallium/drivers/softpipe/sp_setup.c b/src/gallium/drivers/softpipe/sp_setup.c
index 0925653b5d..96cb09b905 100644
--- a/src/gallium/drivers/softpipe/sp_setup.c
+++ b/src/gallium/drivers/softpipe/sp_setup.c
@@ -732,18 +732,9 @@ setup_fragcoord_coeff(struct setup_context *setup, uint slot)
setup->coef[slot].dadx[0] = 1.0;
setup->coef[slot].dady[0] = 0.0;
/*Y*/
- if (setup->softpipe->rasterizer->origin_lower_left) {
- /* y=0=bottom */
- const int winHeight = setup->softpipe->framebuffer.height;
- setup->coef[slot].a0[1] = (float) (winHeight - 1);
- setup->coef[slot].dady[1] = -1.0;
- }
- else {
- /* y=0=top */
- setup->coef[slot].a0[1] = 0.0;
- setup->coef[slot].dady[1] = 1.0;
- }
+ setup->coef[slot].a0[1] = 0.0;
setup->coef[slot].dadx[1] = 0.0;
+ setup->coef[slot].dady[1] = 1.0;
/*Z*/
setup->coef[slot].a0[2] = setup->posCoef.a0[2];
setup->coef[slot].dadx[2] = setup->posCoef.dadx[2];