summaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/nv20/nv20_context.c
diff options
context:
space:
mode:
authorPekka Paalanen <[email protected]>2009-01-31 14:39:08 +0200
committerPekka Paalanen <[email protected]>2009-01-31 23:41:23 +0200
commit9116f9408ed373109cbf7d25998692846f2e2ef3 (patch)
tree734721e2892b088f660b7d97184fa805bfb8e646 /src/gallium/drivers/nv20/nv20_context.c
parentb5e2ab63e8e3c4670c51453470fc9183343a22bf (diff)
nv20: Z-mapping parameters
Based on my renouveau dump, adjust initial hw state related to Z-mapping, and add one unknown depth reg into depth/stencil/alpha emission. Now trivial/tri-z on nv20 looks identical to swrast rendered one. Signed-off-by: Pekka Paalanen <[email protected]>
Diffstat (limited to 'src/gallium/drivers/nv20/nv20_context.c')
-rw-r--r--src/gallium/drivers/nv20/nv20_context.c22
1 files changed, 11 insertions, 11 deletions
diff --git a/src/gallium/drivers/nv20/nv20_context.c b/src/gallium/drivers/nv20/nv20_context.c
index c8fb690ee9c..877ef5dcefd 100644
--- a/src/gallium/drivers/nv20/nv20_context.c
+++ b/src/gallium/drivers/nv20/nv20_context.c
@@ -349,7 +349,7 @@ static void nv20_init_hwctx(struct nv20_context *nv20)
memset(projectionmatrix, 0, sizeof(projectionmatrix));
projectionmatrix[0*4+0] = 1.0;
projectionmatrix[1*4+1] = 1.0;
- projectionmatrix[2*4+2] = 1.0;
+ projectionmatrix[2*4+2] = 16777215.0;
projectionmatrix[3*4+3] = 1.0;
BEGIN_RING(kelvin, NV20TCL_PROJECTION_MATRIX(0), 16);
for (i = 0; i < 16; i++) {
@@ -357,20 +357,20 @@ static void nv20_init_hwctx(struct nv20_context *nv20)
}
BEGIN_RING(kelvin, NV20TCL_DEPTH_RANGE_NEAR, 2);
- OUT_RINGf (0.0);
- OUT_RINGf (16777216.0); /* bpp dependant? */
+ OUT_RINGf (0.0);
+ OUT_RINGf (16777216.0); /* [0, 1] scaled approx to [0, 2^24] */
BEGIN_RING(kelvin, NV20TCL_VIEWPORT_SCALE0_X, 4);
- OUT_RINGf (0.0); /* x-offset */
- OUT_RINGf (0.0); /* y-offset */
- OUT_RINGf (16777215.0 * 0.5);
- OUT_RING (0);
+ OUT_RINGf (0.0); /* x-offset, w/2 + 1.031250 */
+ OUT_RINGf (0.0); /* y-offset, h/2 + 0.030762 */
+ OUT_RINGf (0.0);
+ OUT_RINGf (16777215.0);
BEGIN_RING(kelvin, NV20TCL_VIEWPORT_SCALE1_X, 4);
- OUT_RINGf (0.0); /* no effect? */
- OUT_RINGf (0.0); /* no effect? */
- OUT_RINGf (16777215.0 * 0.5);
- OUT_RINGf (65535.0);
+ OUT_RINGf (0.0); /* no effect?, w/2 */
+ OUT_RINGf (0.0); /* no effect?, h/2 */
+ OUT_RINGf (16777215.0 * 0.5);
+ OUT_RINGf (65535.0);
FIRE_RING (NULL);
}