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[965] Change constant buffer from state structs to plain batch emission. 

Reduces diff to branch which has a relocation in this state emit.
This commit is contained in:
Eric Anholt 2007-12-03 10:58:08 -08:00
parent 454043c4ae
commit 3a90679400
1 changed files with 22 additions and 40 deletions
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62
src/mesa/drivers/dri/i965/brw_curbe.c
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@ -184,6 +184,7 @@ static GLfloat fixed_plane[6][4] = {
*/
static void upload_constant_buffer(struct brw_context *brw)
{
struct intel_context *intel = &brw->intel;
GLcontext *ctx = &brw->intel.ctx;
struct brw_vertex_program *vp = (struct brw_vertex_program *)brw->vertex_program;
struct brw_fragment_program *fp = (struct brw_fragment_program *)brw->fragment_program;
@ -201,13 +202,10 @@ static void upload_constant_buffer(struct brw_context *brw)
brw->curbe.tracked_state.dirty.mesa |= fp->param_state;
if (sz == 0) {
struct brw_constant_buffer cb;
cb.header.opcode = CMD_CONST_BUFFER;
cb.header.length = sizeof(cb)/4 - 2;
cb.header.valid = 0;
cb.bits0.buffer_length = 0;
cb.bits0.buffer_address = 0;
BRW_BATCH_STRUCT(brw, &cb);
BEGIN_BATCH(2, INTEL_BATCH_NO_CLIPRECTS);
OUT_BATCH((CMD_CONST_BUFFER << 16) | (2 - 2));
OUT_BATCH(0);
ADVANCE_BATCH();
if (brw->curbe.last_buf) {
free(brw->curbe.last_buf);
@ -321,39 +319,23 @@ static void upload_constant_buffer(struct brw_context *brw)
buf);
}
/* TODO: only emit the constant_buffer packet when necessary, ie:
- contents have changed
- offset has changed
- hw requirements due to other packets emitted.
*/
{
struct brw_constant_buffer cb;
memset(&cb, 0, sizeof(cb));
cb.header.opcode = CMD_CONST_BUFFER;
cb.header.length = sizeof(cb)/4 - 2;
cb.header.valid = 1;
cb.bits0.buffer_length = sz - 1;
cb.bits0.buffer_address = brw->curbe.gs_offset >> 6;
/* Because this provokes an action (ie copy the constants into the
* URB), it shouldn't be shortcircuited if identical to the
* previous time - because eg. the urb destination may have
* changed, or the urb contents different to last time.
*
* Note that the data referred to is actually copied internally,
* not just used in place according to passed pointer.
*
* It appears that the CS unit takes care of using each available
* URB entry (Const URB Entry == CURBE) in turn, and issuing
* flushes as necessary when doublebuffering of CURBEs isn't
* possible.
*/
/* intel_batchbuffer_align(brw->intel.batch, 64, sizeof(cb)); */
BRW_BATCH_STRUCT(brw, &cb);
/* intel_batchbuffer_align(brw->intel.batch, 64, 0); */
}
/* Because this provokes an action (ie copy the constants into the
* URB), it shouldn't be shortcircuited if identical to the
* previous time - because eg. the urb destination may have
* changed, or the urb contents different to last time.
*
* Note that the data referred to is actually copied internally,
* not just used in place according to passed pointer.
*
* It appears that the CS unit takes care of using each available
* URB entry (Const URB Entry == CURBE) in turn, and issuing
* flushes as necessary when doublebuffering of CURBEs isn't
* possible.
*/
BEGIN_BATCH(2, INTEL_BATCH_NO_CLIPRECTS);
OUT_BATCH((CMD_CONST_BUFFER << 16) | (1 << 8) | (2 - 2));
OUT_BATCH(brw->curbe.gs_offset | (sz - 1));
ADVANCE_BATCH();
}
/* This tracked state is unique in that the state it monitors varies