1 files changed, 94 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r300/pixel_shader.h b/src/mesa/drivers/dri/r300/pixel_shader.h
new file mode 100644
index 00000000000..07c84497340
--- /dev/null
+++ b/src/mesa/drivers/dri/r300/pixel_shader.h
@@ -0,0 +1,94 @@
+#ifndef __PIXEL_SHADER_H__
+#define __PIXEL_SHADER_H__
+
+#include "r300_reg.h"
+
+
+/* INSTR 0 */
+
+#define PFS_OP_MAD	0
+#define PFS_OP_DP3	1
+#define PFS_OP_DP4	2
+#define PFS_OP_MIN	4
+#define PFS_OP_MAX	5
+#define PFS_OP_CMP	8
+#define PFS_OP_FRC	9
+#define PFS_OP_OUTC_REPL_ALPHA	10
+
+/* "or" these with arg0 value to negate or take absolute value of an argument */
+#define PFS_ARG_NEG  (1<<5)
+#define PFS_ARG_ABS  (1<<6)
+
+#define MAKE_PFS_INSTR0(op, arg0, arg1, arg2, flags) \
+	( ((op)<<23) \
+	  | ((arg0)<<R300_FPI0_ARG0C_SHIFT) \
+	  | ((arg1)<<R300_FPI0_ARG1C_SHIFT) \
+	  | ((arg2)<<R300_FPI0_ARG2C_SHIFT) \
+	  | (flags) \
+	)
+
+#define PFS_FLAG_X	1
+#define PFS_FLAG_Y	2
+#define PFS_FLAG_XY	3
+#define PFS_FLAG_Z	4
+#define PFS_FLAG_XZ	5
+#define PFS_FLAG_YZ	6
+#define PFS_FLAG_ALL	7
+#define PFS_FLAG_NONE	0
+
+#define EASY_PFS_INSTR0(op, arg0, arg1, arg2) \
+	MAKE_PFS_INSTR0(PFS_OP_##op, \
+		R300_FPI0_ARGC_##arg0, \
+		R300_FPI0_ARGC_##arg1, \
+		R300_FPI0_ARGC_##arg2, \
+		0)
+
+/* INSTR 1 */
+
+#define PFS_FLAG_CONST (1<<5)
+
+#define MAKE_PFS_INSTR1(dstc, src0, src1, src2, reg, output) \
+	((src0) | ((src1) << R300_FPI1_SRC1C_SHIFT) \
+	  | ((src2)<<R300_FPI1_SRC2C_SHIFT) \
+	  | ((dstc) << R300_FPI1_DSTC_SHIFT) \
+	  | ((reg) << 23) | ((output)<<26))
+
+#define EASY_PFS_INSTR1(dstc, src0, src1, src2, reg, output) \
+	MAKE_PFS_INSTR1(dstc, src0, src1, src2, PFS_FLAG_##reg, PFS_FLAG_##output)
+
+/* INSTR 2 */
+
+/* you can "or" PFS_ARG_NEG with these values to negate them */
+
+#define MAKE_PFS_INSTR2(op, arg0, arg1, arg2, flags) \
+	(((op) << 23) | \
+	  ((arg0)<<R300_FPI2_ARG0A_SHIFT) | \
+	  ((arg1)<<R300_FPI2_ARG1A_SHIFT) | \
+	  ((arg2)<<R300_FPI2_ARG2A_SHIFT) | \
+	  (flags))
+
+#define EASY_PFS_INSTR2(op, arg0, arg1, arg2) \
+	MAKE_PFS_INSTR2(R300_FPI2_OUTA_##op, \
+		R300_FPI2_ARGA_##arg0, \
+		R300_FPI2_ARGA_##arg1, \
+		R300_FPI2_ARGA_##arg2, \
+		0)
+
+
+/* INSTR 3 */
+
+#define PFS_FLAG_NONE	0
+#define PFS_FLAG_REG	1
+#define PFS_FLAG_OUTPUT	2
+#define PFS_FLAG_BOTH	3
+
+#define MAKE_PFS_INSTR3(dstc, src0, src1, src2, flags) \
+	((src0) | ((src1) << R300_FPI1_SRC1C_SHIFT) \
+	  | ((src2)<<R300_FPI1_SRC2C_SHIFT) \
+	  | ((dstc) << R300_FPI1_DSTC_SHIFT) \
+	  | ((flags) << 23))
+
+#define EASY_PFS_INSTR3(dstc, src0, src1, src2, flag) \
+	MAKE_PFS_INSTR3(dstc, src0, src1, src2, PFS_FLAG_##flag)
+
+#endif