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nouveau: nv10: rescale depth near and far

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This commit is contained in:
Patrice Mandin
2007-02-16 19:54:55 +01:00
parent 252d1de054
commit 9131536f00
1 changed files with 8 additions and 2 deletions
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src/mesa/drivers/dri/nouveau/nv10_state.c
+8 -2
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@@ -187,9 +187,15 @@ static void nv10DepthMask(GLcontext *ctx, GLboolean flag)
static void nv10DepthRange(GLcontext *ctx, GLclampd nearval, GLclampd farval)
{
nouveauContextPtr nmesa = NOUVEAU_CONTEXT(ctx);
GLfloat depth_scale = 16777216.0;
if (ctx->DrawBuffer->_DepthBuffer->DepthBits == 16) {
depth_scale = 32768.0;
}
BEGIN_RING_CACHE(NvSub3D, NV10_TCL_PRIMITIVE_3D_DEPTH_RANGE_NEAR, 2);
OUT_RING_CACHEf(nearval);
OUT_RING_CACHEf(farval);
OUT_RING_CACHEf(nearval * depth_scale);
OUT_RING_CACHEf(farval * depth_scale);
nv10ViewportScale(nmesa);
}