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authormichal <michal@michal-laptop.(none)>2007-08-10 11:45:06 +0100
committermichal <michal@michal-laptop.(none)>2007-08-10 11:45:56 +0100
commit9cad4dde9745d2342e0694879a84e1a7006b9b0d (patch)
tree94c87cef774cf702996315d5d42ff55a40add06e /src/mesa/pipe
parent900b0807b80dc79c99afbd063fa014d76c8e7692 (diff)
Support predicates.
Predicates, as per D3D9 spec, are a complete subset of NVIDIA's condition codes. However, due to its broad support in non-NVIDIA hardware, it is being exposed in TGSI to ease hw driver development. Two decomposition functions are expected in the future. 1. GetRidOfPredicates() - predicates are implemented with condition codes. 2. There is no second function, it's just this pesky VI that does not allow me to move with arrow keys and so I cannot edit previous paragraphs.
Diffstat (limited to 'src/mesa/pipe')
-rw-r--r--src/mesa/pipe/tgsi/core/tgsi_token.h71
1 files changed, 54 insertions, 17 deletions
diff --git a/src/mesa/pipe/tgsi/core/tgsi_token.h b/src/mesa/pipe/tgsi/core/tgsi_token.h
index 3552331e79..a94595ca43 100644
--- a/src/mesa/pipe/tgsi/core/tgsi_token.h
+++ b/src/mesa/pipe/tgsi/core/tgsi_token.h
@@ -1102,6 +1102,7 @@ struct tgsi_instruction
#define TGSI_INSTRUCTION_EXT_TYPE_NV 0
#define TGSI_INSTRUCTION_EXT_TYPE_LABEL 1
#define TGSI_INSTRUCTION_EXT_TYPE_TEXTURE 2
+#define TGSI_INSTRUCTION_EXT_TYPE_PREDICATE 3
struct tgsi_instruction_ext
{
@@ -1120,6 +1121,9 @@ struct tgsi_instruction_ext
* If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_TEXTURE, it
* should be cast to tgsi_instruction_ext_texture.
*
+ * If tgsi_instruction_ext::Type is TGSI_INSTRUCTION_EXT_TYPE_PREDICATE, it
+ * should be cast to tgsi_instruction_ext_predicate.
+ *
* If tgsi_instruction_ext::Extended is TRUE, another tgsi_instruction_ext
* follows.
*/
@@ -1201,6 +1205,32 @@ struct tgsi_instruction_ext_texture
GLuint Extended : 1; /* BOOL */
};
+#define TGSI_WRITEMASK_NONE 0x00
+#define TGSI_WRITEMASK_X 0x01
+#define TGSI_WRITEMASK_Y 0x02
+#define TGSI_WRITEMASK_XY 0x03
+#define TGSI_WRITEMASK_Z 0x04
+#define TGSI_WRITEMASK_XZ 0x05
+#define TGSI_WRITEMASK_YZ 0x06
+#define TGSI_WRITEMASK_XYZ 0x07
+#define TGSI_WRITEMASK_W 0x08
+#define TGSI_WRITEMASK_XW 0x09
+#define TGSI_WRITEMASK_YW 0x0A
+#define TGSI_WRITEMASK_XYW 0x0B
+#define TGSI_WRITEMASK_ZW 0x0C
+#define TGSI_WRITEMASK_XZW 0x0D
+#define TGSI_WRITEMASK_YZW 0x0E
+#define TGSI_WRITEMASK_XYZW 0x0F
+
+struct tgsi_instruction_ext_predicate
+{
+ GLuint Type : 4; /* TGSI_INSTRUCTION_EXT_TYPE_PREDICATE */
+ GLuint PredDstIndex : 4; /* UINT */
+ GLuint PredWriteMask : 4; /* TGSI_WRITEMASK_ */
+ GLuint Padding : 19;
+ GLuint Extended : 1; /* BOOL */
+};
+
/*
* File specifies the register array to access.
*
@@ -1331,23 +1361,6 @@ struct tgsi_dimension
GLuint Extended : 1; /* BOOL */
};
-#define TGSI_WRITEMASK_NONE 0x00
-#define TGSI_WRITEMASK_X 0x01
-#define TGSI_WRITEMASK_Y 0x02
-#define TGSI_WRITEMASK_XY 0x03
-#define TGSI_WRITEMASK_Z 0x04
-#define TGSI_WRITEMASK_XZ 0x05
-#define TGSI_WRITEMASK_YZ 0x06
-#define TGSI_WRITEMASK_XYZ 0x07
-#define TGSI_WRITEMASK_W 0x08
-#define TGSI_WRITEMASK_XW 0x09
-#define TGSI_WRITEMASK_YW 0x0A
-#define TGSI_WRITEMASK_XYW 0x0B
-#define TGSI_WRITEMASK_ZW 0x0C
-#define TGSI_WRITEMASK_XZW 0x0D
-#define TGSI_WRITEMASK_YZW 0x0E
-#define TGSI_WRITEMASK_XYZW 0x0F
-
struct tgsi_dst_register
{
GLuint File : 4; /* TGSI_FILE_ */
@@ -1367,6 +1380,7 @@ struct tgsi_dst_register
#define TGSI_DST_REGISTER_EXT_TYPE_CONDCODE 0
#define TGSI_DST_REGISTER_EXT_TYPE_MODULATE 1
+#define TGSI_DST_REGISTER_EXT_TYPE_PREDICATE 2
struct tgsi_dst_register_ext
{
@@ -1382,6 +1396,9 @@ struct tgsi_dst_register_ext
* If tgsi_dst_register_ext::Type is TGSI_DST_REGISTER_EXT_TYPE_MODULATE,
* it should be cast to tgsi_dst_register_ext_modulate.
*
+ * If tgsi_dst_register_ext::Type is TGSI_DST_REGISTER_EXT_TYPE_PREDICATE,
+ * it should be cast to tgsi_dst_register_ext_predicate.
+ *
* If tgsi_dst_register_ext::Extended is TRUE, another tgsi_dst_register_ext
* follows.
*/
@@ -1415,6 +1432,26 @@ struct tgsi_dst_register_ext_modulate
GLuint Extended : 1; /* BOOL */
};
+/*
+ * Currently, the following constraints apply.
+ *
+ * - PredSwizzleXYZW is either set to identity or replicate.
+ * - PredSrcIndex is 0.
+ */
+
+struct tgsi_dst_register_ext_predicate
+{
+ GLuint Type : 4; /* TGSI_DST_REGISTER_EXT_TYPE_PREDICATE */
+ GLuint PredSwizzleX : 2; /* TGSI_SWIZZLE_ */
+ GLuint PredSwizzleY : 2; /* TGSI_SWIZZLE_ */
+ GLuint PredSwizzleZ : 2; /* TGSI_SWIZZLE_ */
+ GLuint PredSwizzleW : 2; /* TGSI_SWIZZLE_ */
+ GLuint PredSrcIndex : 4; /* UINT */
+ GLuint Negate : 1; /* BOOL */
+ GLuint Padding : 14;
+ GLuint Extended : 1; /* BOOL */
+};
+
#if defined __cplusplus
} // extern "C"
#endif // defined __cplusplus