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i965/blorp: Emit MADs.

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Low hanging fruit: cuts a couple of instructions.

Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
This commit is contained in:
Matt Turner
2015-02-09 22:54:51 -08:00
parent 30ec53f30e
commit dada30462b
2 changed files with 11 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/mesa/drivers/dri/i965/brw_blorp_blit.cpp
+2 -4
View File
@@ -1255,10 +1255,8 @@ brw_blorp_blit_program::translate_dst_to_src()
emit_mov(Xp_f, X);
emit_mov(Yp_f, Y);
/* Scale and offset */
emit_mul(X_f, Xp_f, x_transform.multiplier);
emit_mul(Y_f, Yp_f, y_transform.multiplier);
emit_add(X_f, X_f, x_transform.offset);
emit_add(Y_f, Y_f, y_transform.offset);
emit_mad(X_f, x_transform.offset, Xp_f, x_transform.multiplier);
emit_mad(Y_f, y_transform.offset, Yp_f, y_transform.multiplier);
if (key->blit_scaled && key->blend) {
/* Translate coordinates to lay out the samples in a rectangular grid
* roughly corresponding to sample locations.
src/mesa/drivers/dri/i965/brw_blorp_blit_eu.h
+9
View File
@@ -85,6 +85,15 @@ protected:
new (mem_ctx) fs_inst(BRW_OPCODE_LRP, 16, dst, src1, src2, src3));
}
inline void emit_mad(const struct brw_reg &dst,
const struct brw_reg &src1,
const struct brw_reg &src2,
const struct brw_reg &src3)
{
insts.push_tail(
new (mem_ctx) fs_inst(BRW_OPCODE_MAD, 16, dst, src1, src2, src3));
}
inline void emit_min(const struct brw_reg& dst,
const struct brw_reg& src1,
const struct brw_reg& src2)