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r600: fix polygon offset

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This commit is contained in:
Alex Deucher 2009-09-19 14:46:06 -04:00
parent 67cad78e08
commit 368fb578f8
1 changed files with 8 additions and 3 deletions
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11
src/mesa/drivers/dri/r600/r700_state.c
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@ -1130,20 +1130,25 @@ static void r700PolygonOffset(GLcontext * ctx, GLfloat factor, GLfloat units) //
context_t *context = R700_CONTEXT(ctx);
R700_CHIP_CONTEXT *r700 = (R700_CHIP_CONTEXT*)(&context->hw);
GLfloat constant = units;
GLchar depth = 0;
R600_STATECHANGE(context, poly);
switch (ctx->Visual.depthBits) {
case 16:
constant *= 4.0;
depth = -16;
break;
case 24:
constant *= 2.0;
depth = -24;
break;
}
factor *= 12.0;
R600_STATECHANGE(context, poly);
SETfield(r700->PA_SU_POLY_OFFSET_DB_FMT_CNTL.u32All, depth,
POLY_OFFSET_NEG_NUM_DB_BITS_shift, POLY_OFFSET_NEG_NUM_DB_BITS_mask);
//r700->PA_SU_POLY_OFFSET_CLAMP.f32All = constant; //???
r700->PA_SU_POLY_OFFSET_FRONT_SCALE.f32All = factor;
r700->PA_SU_POLY_OFFSET_FRONT_OFFSET.f32All = constant;
r700->PA_SU_POLY_OFFSET_BACK_SCALE.f32All = factor;