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Alpha test fix

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This commit is contained in:
Peter Zubaj
2005-04-18 19:06:14 +00:00
parent 61f08d8094
commit b7142567bc
1 changed files with 26 additions and 2 deletions
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28
src/mesa/drivers/dri/r300/r300_state.c
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@@ -435,6 +435,28 @@ static void r300UpdateCulling(GLcontext* ctx)
r300->hw.cul.cmd[R300_CUL_CULL] = val;
}
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
*/
r300ContextPtr r300 = R300_CONTEXT(ctx);
R300_STATECHANGE(r300, unk4F10);
if (ctx->Color.AlphaEnabled)
/* disable early Z */
r300->hw.unk4F10.cmd[2] = 0x00000000;
else {
if (ctx->Depth.Test)
/* enable early Z */
r300->hw.unk4F10.cmd[2] = 0x00000001;
else
/* disable early Z */
r300->hw.unk4F10.cmd[2] = 0x00000000;
}
}
/**
* Handle glEnable()/glDisable().
@@ -468,6 +490,7 @@ static void r300Enable(GLcontext* ctx, GLenum cap, GLboolean state)
r300->hw.at.cmd[R300_AT_ALPHA_TEST] &=
~R300_ALPHA_TEST_ENABLE;
}
update_early_z(ctx);
break;
case GL_BLEND:
@@ -488,6 +511,7 @@ static void r300Enable(GLcontext* ctx, GLenum cap, GLboolean state)
r300->hw.zs.cmd[R300_ZS_CNTL_0] &= R300_RB3D_STENCIL_ENABLE;
r300->hw.zs.cmd[R300_ZS_CNTL_0] |= newval;
update_early_z(ctx);
break;
case GL_STENCIL_TEST:
@@ -2314,12 +2338,12 @@ void r300ResetHwState(r300ContextPtr r300)
r300->hw.unk4EA0.cmd[2] = 0xffffffff;
r300->hw.unk4F10.cmd[1] = 0x00000002; // depthbuffer format?
r300->hw.unk4F10.cmd[2] = 0x00000000;
//r300->hw.unk4F10.cmd[2] = 0x00000000;
r300->hw.unk4F10.cmd[3] = 0x00000003;
r300->hw.unk4F10.cmd[4] = 0x00000000;
/* experiment a bit */
r300->hw.unk4F10.cmd[2] = 0x00000001; // depthbuffer format?
//r300->hw.unk4F10.cmd[2] = 0x00000001; // depthbuffer format?
r300->hw.zb.cmd[R300_ZB_OFFSET] =
r300->radeon.radeonScreen->depthOffset +