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authorMarek Olšák <maraeo@gmail.com>2009-10-28 02:43:51 +0100
committerCorbin Simpson <MostAwesomeDude@gmail.com>2009-10-28 12:15:34 -0700
commitbcfde429139476c2d04baddaf671651cfc860145 (patch)
tree5845e092553fc28a0742e151fb15d9b4c0fb843f /src/gallium/drivers/r300
parenta1d726aae8fcacfa1eb1d76ce9c46adaafeaf4a4 (diff)
r300g: fix emitting the stencil-ref and alpha-ref values
Signed-off-by: Corbin Simpson <MostAwesomeDude@gmail.com> DSA really needs its head examined someday. ~ C.
Diffstat (limited to 'src/gallium/drivers/r300')
-rw-r--r--src/gallium/drivers/r300/r300_emit.c16
-rw-r--r--src/gallium/drivers/r300/r300_reg.h2
-rw-r--r--src/gallium/drivers/r300/r300_state.c24
3 files changed, 31 insertions, 11 deletions
diff --git a/src/gallium/drivers/r300/r300_emit.c b/src/gallium/drivers/r300/r300_emit.c
index 8bfa2932c9..2a8e4a9f41 100644
--- a/src/gallium/drivers/r300/r300_emit.c
+++ b/src/gallium/drivers/r300/r300_emit.c
@@ -102,19 +102,23 @@ void r300_emit_dsa_state(struct r300_context* r300,
struct r300_screen* r300screen = r300_screen(r300->context.screen);
CS_LOCALS(r300);
- BEGIN_CS(r300screen->caps->is_r500 ? 8 : 8);
+ BEGIN_CS(r300screen->caps->is_r500 ? 10 : 8);
OUT_CS_REG(R300_FG_ALPHA_FUNC, dsa->alpha_function);
- /* XXX figure out the r300 counterpart for this */
- if (r300screen->caps->is_r500) {
- /* OUT_CS_REG(R500_FG_ALPHA_VALUE, dsa->alpha_reference); */
- }
+
+ /* not needed since we use the 8bit alpha ref */
+ /*if (r300screen->caps->is_r500) {
+ OUT_CS_REG(R500_FG_ALPHA_VALUE, dsa->alpha_reference);
+ }*/
+
OUT_CS_REG_SEQ(R300_ZB_CNTL, 3);
OUT_CS(dsa->z_buffer_control);
OUT_CS(dsa->z_stencil_control);
OUT_CS(dsa->stencil_ref_mask);
OUT_CS_REG(R300_ZB_ZTOP, r300->ztop_state.z_buffer_top);
+
+ /* XXX it seems r3xx doesn't support STENCILREFMASK_BF */
if (r300screen->caps->is_r500) {
- /* OUT_CS_REG(R500_ZB_STENCILREFMASK_BF, dsa->stencil_ref_bf); */
+ OUT_CS_REG(R500_ZB_STENCILREFMASK_BF, dsa->stencil_ref_bf);
}
END_CS;
}
diff --git a/src/gallium/drivers/r300/r300_reg.h b/src/gallium/drivers/r300/r300_reg.h
index e920b2a5e7..babc3c709e 100644
--- a/src/gallium/drivers/r300/r300_reg.h
+++ b/src/gallium/drivers/r300/r300_reg.h
@@ -2416,6 +2416,8 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
# define R300_Z_WRITE_ENABLE (1 << 2)
# define R300_Z_SIGNED_COMPARE (1 << 3)
# define R300_STENCIL_FRONT_BACK (1 << 4)
+# define R500_STENCIL_ZSIGNED_MAGNITUDE (1 << 5)
+# define R500_STENCIL_REFMASK_FRONT_BACK (1 << 6)
#define R300_ZB_ZSTENCILCNTL 0x4f04
/* functions */
diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c
index 5d28837ef7..5db8c69dec 100644
--- a/src/gallium/drivers/r300/r300_state.c
+++ b/src/gallium/drivers/r300/r300_state.c
@@ -198,6 +198,8 @@ static void*
r300_create_dsa_state(struct pipe_context* pipe,
const struct pipe_depth_stencil_alpha_state* state)
{
+ struct r300_capabilities *caps =
+ r300_screen(r300_context(pipe)->context.screen)->caps;
struct r300_dsa_state* dsa = CALLOC_STRUCT(r300_dsa_state);
/* Depth test setup. */
@@ -242,9 +244,16 @@ static void*
(r300_translate_stencil_op(state->stencil[1].zfail_op) <<
R300_S_BACK_ZFAIL_OP_SHIFT);
- dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
- (state->stencil[1].valuemask << R300_STENCILMASK_SHIFT) |
- (state->stencil[1].writemask << R300_STENCILWRITEMASK_SHIFT);
+ /* XXX it seems r3xx doesn't support STENCILREFMASK_BF */
+ if (caps->is_r500)
+ {
+ dsa->z_buffer_control |= R500_STENCIL_REFMASK_FRONT_BACK;
+ dsa->stencil_ref_bf = (state->stencil[1].ref_value) |
+ (state->stencil[1].valuemask <<
+ R300_STENCILMASK_SHIFT) |
+ (state->stencil[1].writemask <<
+ R300_STENCILWRITEMASK_SHIFT);
+ }
}
}
@@ -253,8 +262,13 @@ static void*
dsa->alpha_function =
r300_translate_alpha_function(state->alpha.func) |
R300_FG_ALPHA_FUNC_ENABLE;
- dsa->alpha_reference = CLAMP(state->alpha.ref_value * 1023.0f,
- 0, 1023);
+
+ /* XXX figure out why emitting 10bit alpha ref causes CS to dump */
+ /* always use 8bit alpha ref */
+ dsa->alpha_function |= float_to_ubyte(state->alpha.ref_value);
+
+ if (caps->is_r500)
+ dsa->alpha_function |= R500_FG_ALPHA_FUNC_8BIT;
}
return (void*)dsa;