Attached is a mini-patch to add the address of early Z to r300_reg.h and
use it.
Jerome Glisse helped me with this patch. Thanks. :-)
diff --git a/src/mesa/drivers/dri/r300/r300_reg.h b/src/mesa/drivers/dri/r300/r300_reg.h
index 9f636ec..5dfd1fb 100644
--- a/src/mesa/drivers/dri/r300/r300_reg.h
+++ b/src/mesa/drivers/dri/r300/r300_reg.h
@@ -1378,6 +1378,10 @@ USE OR OTHER DEALINGS IN THE SOFTWARE.
/* 16 bit format or some aditional bit ? */
# define R300_DEPTH_FORMAT_UNK32 (32 << 0)
+#define R300_RB3D_EARLY_Z 0x4F14
+# define R300_EARLY_Z_DISABLE 0
+# define R300_EARLY_Z_ENABLE 1
+
/* gap */
#define R300_RB3D_DEPTHOFFSET 0x4F20
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index b30ece1..0e33e51 100644
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -328,24 +328,24 @@ static void r300UpdateCulling(GLcontext* ctx)
static void update_early_z(GLcontext *ctx)
{
- /* updates register 0x4f14
- if depth test is not enabled it should be 0x00000000
- if depth is enabled and alpha not it should be 0x00000001
- if depth and alpha is enabled it should be 0x00000000
+ /* updates register R300_RB3D_EARLY_Z (0x4F14)
+ if depth test is not enabled it should be R300_EARLY_Z_DISABLE
+ if depth is enabled and alpha not it should be R300_EARLY_Z_ENABLE
+ if depth and alpha is enabled it should be R300_EARLY_Z_DISABLE
*/
r300ContextPtr r300 = R300_CONTEXT(ctx);
R300_STATECHANGE(r300, unk4F10);
if (ctx->Color.AlphaEnabled && ctx->Color.AlphaFunc != GL_ALWAYS)
/* disable early Z */
- r300->hw.unk4F10.cmd[2] = 0x00000000;
+ r300->hw.unk4F10.cmd[2] = R300_EARLY_Z_DISABLE;
else {
if (ctx->Depth.Test && ctx->Depth.Func != GL_NEVER)
/* enable early Z */
- r300->hw.unk4F10.cmd[2] = 0x00000001;
+ r300->hw.unk4F10.cmd[2] = R300_EARLY_Z_ENABLE;
else
/* disable early Z */
- r300->hw.unk4F10.cmd[2] = 0x00000000;
+ r300->hw.unk4F10.cmd[2] = R300_EARLY_Z_DISABLE;
}
}
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