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-rw-r--r--src/mesa/drivers/dri/r300/r300_context.h2
-rw-r--r--src/mesa/drivers/dri/r300/r300_state.c5
-rw-r--r--src/mesa/drivers/dri/r300/r500_fragprog.c6
3 files changed, 11 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/r300/r300_context.h b/src/mesa/drivers/dri/r300/r300_context.h
index 817f783dffb..a5ec5ee46e2 100644
--- a/src/mesa/drivers/dri/r300/r300_context.h
+++ b/src/mesa/drivers/dri/r300/r300_context.h
@@ -833,6 +833,8 @@ struct r500_fragment_program {
int max_temp_idx;
+ GLboolean writes_depth;
+
GLuint optimization;
};
diff --git a/src/mesa/drivers/dri/r300/r300_state.c b/src/mesa/drivers/dri/r300/r300_state.c
index f0a5176949d..550f7108542 100644
--- a/src/mesa/drivers/dri/r300/r300_state.c
+++ b/src/mesa/drivers/dri/r300/r300_state.c
@@ -411,7 +411,10 @@ static GLboolean current_fragment_program_writes_depth(GLcontext* ctx)
(char *)ctx->FragmentProgram._Current;
return (fp && fp->WritesDepth);
} else {
- return GL_FALSE; /* TODO: Verify depth writing works on R5xx */
+ struct r500_fragment_program* fp =
+ (struct r500_fragment_program*)(char*)
+ ctx->FragmentProgram._Current;
+ return (fp && fp->writes_depth);
}
}
diff --git a/src/mesa/drivers/dri/r300/r500_fragprog.c b/src/mesa/drivers/dri/r300/r500_fragprog.c
index a2312187a69..d5ae4a5f749 100644
--- a/src/mesa/drivers/dri/r300/r500_fragprog.c
+++ b/src/mesa/drivers/dri/r300/r500_fragprog.c
@@ -365,7 +365,9 @@ static void emit_alu(struct r500_fragment_program *fp, int counter, struct prog_
fp->inst[counter].inst0 |= (fpi->DstReg.WriteMask << 15);
if (fpi->DstReg.Index == FRAG_RESULT_DEPR)
- fp->inst[counter].inst4 = R500_ALPHA_W_OMASK;
+ fp->inst[counter].inst4 |= R500_ALPHA_W_OMASK;
+ /* Notify the state emission! */
+ fp->writes_depth = GL_TRUE;
} else {
fp->inst[counter].inst0 = R500_INST_TYPE_ALU
/* pixel_mask */
@@ -1251,6 +1253,8 @@ static void init_program(r300ContextPtr r300, struct r500_fragment_program *fp)
fp->max_temp_idx = 1;
/* Temp register offset. */
fp->temp_reg_offset = 0;
+ /* Whether or not we perform any depth writing. */
+ fp->writes_depth = GL_FALSE;
_mesa_memset(cs, 0, sizeof(*fp->cs));
for (i = 0; i < PFS_MAX_ALU_INST; i++) {