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r600g: avoid copying unnecessary pieces of a block.

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This just avoids copying stuff if its going to modify the number of dwords
later anyways.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2011-06-02 14:29:37 +10:00
parent 9eb86f89a9
commit 8782fdc1db
1 changed files with 19 additions and 10 deletions
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29
src/gallium/winsys/r600/drm/r600_hw_context.c
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@ -1180,11 +1180,16 @@ struct r600_bo *r600_context_reg_bo(struct r600_context *ctx, unsigned offset)
void r600_context_block_emit_dirty(struct r600_context *ctx, struct r600_block *block)
{
int id;
int optional = block->nbo == 0 && !(block->flags & REG_FLAG_DIRTY_ALWAYS);
int cp_dwords = block->pm4_ndwords, start_dword;
int new_dwords;
if (block->nreg_dirty == 0 && block->nbo == 0 && !(block->flags & REG_FLAG_DIRTY_ALWAYS)) {
if (block->nreg_dirty == 0 && optional) {
goto out;
}
optional &= (block->nreg_dirty != block->nreg);
ctx->flags |= R600_CONTEXT_CHECK_EVENT_FLUSH;
for (int j = 0; j < block->nreg; j++) {
if (block->pm4_bo_index[j]) {
@ -1200,18 +1205,22 @@ void r600_context_block_emit_dirty(struct r600_context *ctx, struct r600_block *
}
}
ctx->flags &= ~R600_CONTEXT_CHECK_EVENT_FLUSH;
memcpy(&ctx->pm4[ctx->pm4_cdwords], block->pm4, block->pm4_ndwords * 4);
ctx->pm4_cdwords += block->pm4_ndwords;
if (block->nreg_dirty != block->nreg && block->nbo == 0 && !(block->flags & REG_FLAG_DIRTY_ALWAYS)) {
int new_dwords = block->nreg_dirty;
uint32_t oldword, newword;
ctx->pm4_cdwords -= block->pm4_ndwords;
newword = oldword = ctx->pm4[ctx->pm4_cdwords];
if (optional) {
new_dwords = block->nreg_dirty;
start_dword = ctx->pm4_cdwords;
cp_dwords = new_dwords + 2;
}
memcpy(&ctx->pm4[ctx->pm4_cdwords], block->pm4, cp_dwords * 4);
ctx->pm4_cdwords += cp_dwords;
if (optional) {
uint32_t newword;
newword = ctx->pm4[start_dword];
newword &= PKT_COUNT_C;
newword |= PKT_COUNT_S(new_dwords);
ctx->pm4[ctx->pm4_cdwords] = newword;
ctx->pm4_cdwords += new_dwords + 2;
ctx->pm4[start_dword] = newword;
}
out:
block->status ^= R600_BLOCK_STATUS_DIRTY;