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i965/gen7: Extract a function for setting up a shader stage's constants. 

This will allow us to reuse some code when setting up the geometry
shader stage.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Paul Berry 2013-09-09 07:28:17 -07:00
parent 3bc642cbf6
commit ec5c924290
2 changed files with 42 additions and 25 deletions
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6
src/mesa/drivers/dri/i965/brw_state.h
View File

@ -240,6 +240,12 @@ brw_vec4_upload_binding_table(struct brw_context *brw,
struct brw_stage_state *stage_state,
const struct brw_vec4_prog_data *prog_data);
/* gen7_vs_state.c */
void
gen7_upload_constant_state(struct brw_context *brw,
const struct brw_stage_state *stage_state,
bool active, unsigned opcode);
#ifdef __cplusplus
}
#endif

61
src/mesa/drivers/dri/i965/gen7_vs_state.c
View File

@ -29,6 +29,40 @@
#include "program/prog_statevars.h"
#include "intel_batchbuffer.h"
void
gen7_upload_constant_state(struct brw_context *brw,
const struct brw_stage_state *stage_state,
bool active, unsigned opcode)
{
if (!active || stage_state->push_const_size == 0) {
/* Disable the push constant buffers. */
BEGIN_BATCH(7);
OUT_BATCH(opcode << 16 | (7 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
BEGIN_BATCH(7);
OUT_BATCH(opcode << 16 | (7 - 2));
OUT_BATCH(stage_state->push_const_size);
OUT_BATCH(0);
/* Pointer to the constant buffer. Covered by the set of state flags
* from gen6_prepare_wm_contants
*/
OUT_BATCH(stage_state->push_const_offset | GEN7_MOCS_L3);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
}
static void
upload_vs_state(struct brw_context *brw)
{
@ -52,31 +86,8 @@ upload_vs_state(struct brw_context *brw)
OUT_BATCH(stage_state->sampler_offset);
ADVANCE_BATCH();
if (stage_state->push_const_size == 0) {
/* Disable the push constant buffers. */
BEGIN_BATCH(7);
OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 | (7 - 2));
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
} else {
BEGIN_BATCH(7);
OUT_BATCH(_3DSTATE_CONSTANT_VS << 16 | (7 - 2));
OUT_BATCH(stage_state->push_const_size);
OUT_BATCH(0);
/* Pointer to the VS constant buffer. Covered by the set of
* state flags from gen6_prepare_wm_contants
*/
OUT_BATCH(stage_state->push_const_offset | GEN7_MOCS_L3);
OUT_BATCH(0);
OUT_BATCH(0);
OUT_BATCH(0);
ADVANCE_BATCH();
}
gen7_upload_constant_state(brw, stage_state, true /* active */,
_3DSTATE_CONSTANT_VS);
/* Use ALT floating point mode for ARB vertex programs, because they
* require 0^0 == 1.