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Add early register descritpion.

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This need more work on case where we can disable
or enable early  (stencil, alpha might need it to
be disable).
This commit is contained in:
Christoph Bill 2007-03-01 20:40:25 +01:00 • committed by Jerome Glisse
parent 5cb01764f6
commit ad3f2107ed
2 changed files with 11 additions and 7 deletions
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4
src/mesa/drivers/dri/r300/r300_reg.h
View file

@ -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 << 0)
# define R300_EARLY_Z_ENABLE (1 << 0)
/* gap */
#define R300_RB3D_DEPTHOFFSET 0x4F20

14
src/mesa/drivers/dri/r300/r300_state.c
View file

@ -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;
}
}