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authorBrian Paul <brian.paul@tungstengraphics.com>2002-04-02 23:36:50 +0000
committerBrian Paul <brian.paul@tungstengraphics.com>2002-04-02 23:36:50 +0000
commitb63e8556fa9655bdfcc69fa04663e854f7fb2fbd (patch)
tree0bdc09e4aa4695d3d29fdcf590b7651cb353f5cb /src/mesa/x86
parent31fe0ade35a4d09087c575e99ecbbe6505b6e4de (diff)
more blending updates from Jose
Diffstat (limited to 'src/mesa/x86')
-rw-r--r--src/mesa/x86/mmx_blend.S41
1 files changed, 22 insertions, 19 deletions
diff --git a/src/mesa/x86/mmx_blend.S b/src/mesa/x86/mmx_blend.S
index 88908bd345..c2be6812ec 100644
--- a/src/mesa/x86/mmx_blend.S
+++ b/src/mesa/x86/mmx_blend.S
@@ -35,7 +35,7 @@ GLNAME( _mesa_mmx_blend_transparency ):
MOV_L ( EDX, EAX )
AND_L ( CONST(4), EAX )
CMP_L ( CONST(8), EAX )
- JNE ( LLBL(GMBT_no_align) )
+ JNE ( LLBL(GMBT_skip_runin) )
MOV_L ( REGOFF(20, EBP), EAX )
ADD_L ( CONST(3), EAX )
XOR_L ( EDX, EDX )
@@ -126,13 +126,15 @@ GLNAME( _mesa_mmx_blend_transparency ):
ADD_L ( CONST(4), REGOFF(20, EBP) )
ADD_L ( CONST(4), REGOFF(24, EBP) )
DEC_L ( REGOFF(12, EBP) )
-LLBL(GMBT_skip_runin):
+
+LLBL (GMBT_skip_runin):
CMP_L ( CONST(0), REGOFF(12, EBP) ) /* n == 0 */
- JE ( LLBL(GMBT_zero_length) )
+ JE ( LLBL(GMBT_runout) )
MOV_L ( CONST(0), REGOFF(-28, EBP) )
+
ALIGNTEXT4
-LLBL(GMBT_main_loop):
+LLBL (GMBT_main_loop):
MOV_L ( REGOFF(12, EBP), EDX )
MOV_L ( EDX, EAX )
@@ -140,19 +142,20 @@ LLBL(GMBT_main_loop):
CMP_L ( EAX, REGOFF(-28, EBP) )
JB ( LLBL(GMBT_no_jump) )
JMP ( LLBL(GMBT_end_loop) )
+
ALIGNTEXT16
-LLBL(GMBT_nojump):
+LLBL (GMBT_no_jump):
- MOV_L ( REGOFF(-28, EBP), EAX )
- LEA_L ( REGDIS(0,EAX,2), EDX )
- MOV_L ( REGOFF(16, EBP), EAX ) /* mask */
- CMP_B ( CONST(0), REGBI(EAX,EDX) )
+ MOV_L ( REGOFF(-28, EBP), EAX ) /* eax = i */
+ LEA_L ( REGDIS(0,EAX,2), EDX ) /* edx = i*2 */
+ MOV_L ( REGOFF(16, EBP), EAX ) /* eax = mask */
+ CMP_W ( CONST(0), REGBI(EAX,EDX) ) /* ((unsigned *) mask)[i] == 0 */
JE ( LLBL(GMBT_masked) )
- MOV_L ( REGOFF(-28, EBP), EAX )
+ MOV_L ( REGOFF(-28, EBP), EAX ) /* eax = i */
MOV_L ( EAX, EDX )
- LEA_L ( REGDIS(0,EDX,8), ECX )
+ LEA_L ( REGDIS(0,EDX,8), ECX ) /* ecx = i*8 */
MOV_L ( ECX, EAX )
- ADD_L ( REGOFF(20, EBP), EAX )
+ ADD_L ( REGOFF(20, EBP), EAX )
MOV_L ( REGOFF(-28, EBP), EDX )
MOV_L ( EDX, ECX )
LEA_L ( REGDIS(0,ECX,8), EDX )
@@ -160,7 +163,7 @@ LLBL(GMBT_nojump):
ADD_L ( REGOFF(24, EBP), ECX )
MOVQ ( REGIND(EAX), MM4 )
- PXOR ( MM5, MM5 )
+ PXOR ( MM5, MM5 ) /* mm5 = 00 00 00 00 00 00 00 00 */
MOVQ ( MM4, MM1 )
MOVQ ( REGIND(ECX), MM7 )
PUNPCKLBW ( MM5, MM1 )
@@ -205,17 +208,16 @@ LLBL(GMBT_nojump):
POR ( MM1, MM4 )
MOVQ ( MM4, REGIND(EAX) )
-LLBL(GMBT_masked):
+LLBL (GMBT_masked):
INC_L ( REGOFF(-28, EBP) )
JMP ( LLBL(GMBT_main_loop) )
-ALIGNTEXT16
-LLBL(GMBT_end_loop):
-
+ALIGNTEXT16
+LLBL (GMBT_end_loop):
EMMS
-LLBL(GMBT_runout):
+LLBL (GMBT_runout):
MOV_L ( REGOFF(12, EBP), EAX )
AND_L ( CONST(1), EAX )
@@ -349,7 +351,8 @@ LLBL(GMBT_runout):
LEA_L ( REGOFF(-1, EAX), EDX )
MOV_B ( REGOFF(-32, EBP), AL )
MOV_B ( AL, REGIND(EDX) )
-LLBL(GMBT_skip_runout):
+
+LLBL (GMBT_skip_runout):
MOV_L ( REGOFF(-56, EBP), EBX )
MOV_L ( EBP, ESP )