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r600: don't enable depth test if there is no depth buffer 

If there is no depth buffer bound to current context don't
enable depth test. GL states that if depth test is enabled
without depth buffer it's as if depth buffer always pass.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
This commit is contained in:
Jerome Glisse 2010-04-23 11:56:06 +02:00
parent c37e275e77
commit eb4dc54788
1 changed files with 4 additions and 1 deletions
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5
src/mesa/drivers/dri/r600/r700_state.c
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@ -252,12 +252,15 @@ void r700UpdateShaderStates(GLcontext * ctx)
static void r700SetDepthState(GLcontext * ctx)
{
struct radeon_renderbuffer *rrb;
context_t *context = R700_CONTEXT(ctx);
R700_CHIP_CONTEXT *r700 = (R700_CHIP_CONTEXT*)(&context->hw);
R600_STATECHANGE(context, db);
if (ctx->Depth.Test)
rrb = radeon_get_depthbuffer(&context->radeon);
if (ctx->Depth.Test && rrb && rrb->bo)
{
SETbit(r700->DB_DEPTH_CONTROL.u32All, Z_ENABLE_bit);
if (ctx->Depth.Mask)