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nv20: Z-mapping parameters

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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 <pq@iki.fi>
This commit is contained in:
Pekka Paalanen
2009-01-31 14:39:08 +02:00
parent b5e2ab63e8
commit 9116f9408e
2 changed files with 14 additions and 11 deletions
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src/gallium/drivers/nv20/nv20_context.c
+11 -11
View File
@@ -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);
}
src/gallium/drivers/nv20/nv20_state_emit.c
+3
View File
@@ -73,6 +73,9 @@ static void nv20_state_emit_dsa(struct nv20_context* nv20)
BEGIN_RING(kelvin, NV20TCL_DEPTH_TEST_ENABLE, 1);
OUT_RING (d->depth.test_enable);
BEGIN_RING(kelvin, NV20TCL_DEPTH_UNK17D8, 1);
OUT_RING (1);
#if 0
BEGIN_RING(kelvin, NV20TCL_STENCIL_ENABLE, 1);
OUT_RING (d->stencil.enable);