1 files changed, 126 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/r600/radeon_program_pair.h b/src/mesa/drivers/dri/r600/radeon_program_pair.h
new file mode 100644
index 00000000000..4624a246298
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+++ b/src/mesa/drivers/dri/r600/radeon_program_pair.h
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2008 Nicolai Haehnle.
+ *
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial
+ * portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ */
+
+#ifndef __RADEON_PROGRAM_PAIR_H_
+#define __RADEON_PROGRAM_PAIR_H_
+
+#include "radeon_program.h"
+
+
+/**
+ * Represents a paired instruction, as found in R300 and R500
+ * fragment programs.
+ */
+struct radeon_pair_instruction_source {
+	GLuint Index:8;
+	GLuint Constant:1;
+	GLuint Used:1;
+};
+
+struct radeon_pair_instruction_rgb {
+	GLuint Opcode:8;
+	GLuint DestIndex:8;
+	GLuint WriteMask:3;
+	GLuint OutputWriteMask:3;
+	GLuint Saturate:1;
+
+	struct radeon_pair_instruction_source Src[3];
+
+	struct {
+		GLuint Source:2;
+		GLuint Swizzle:9;
+		GLuint Abs:1;
+		GLuint Negate:1;
+	} Arg[3];
+};
+
+struct radeon_pair_instruction_alpha {
+	GLuint Opcode:8;
+	GLuint DestIndex:8;
+	GLuint WriteMask:1;
+	GLuint OutputWriteMask:1;
+	GLuint DepthWriteMask:1;
+	GLuint Saturate:1;
+
+	struct radeon_pair_instruction_source Src[3];
+
+	struct {
+		GLuint Source:2;
+		GLuint Swizzle:3;
+		GLuint Abs:1;
+		GLuint Negate:1;
+	} Arg[3];
+};
+
+struct radeon_pair_instruction {
+	struct radeon_pair_instruction_rgb RGB;
+	struct radeon_pair_instruction_alpha Alpha;
+};
+
+
+/**
+ *
+ */
+struct radeon_pair_handler {
+	/**
+	 * Fill in the proper hardware index for the given constant register.
+	 *
+	 * @return GL_FALSE on error.
+	 */
+	GLboolean (*EmitConst)(void*, GLuint file, GLuint index, GLuint *hwindex);
+
+	/**
+	 * Write a paired instruction to the hardware.
+	 *
+	 * @return GL_FALSE on error.
+	 */
+	GLboolean (*EmitPaired)(void*, struct radeon_pair_instruction*);
+
+	/**
+	 * Write a texture instruction to the hardware.
+	 * Register indices have already been rewritten to the allocated
+	 * hardware register numbers.
+	 *
+	 * @return GL_FALSE on error.
+	 */
+	GLboolean (*EmitTex)(void*, struct prog_instruction*);
+
+	/**
+	 * Called before a block of contiguous, independent texture
+	 * instructions is emitted.
+	 */
+	GLboolean (*BeginTexBlock)(void*);
+
+	GLuint MaxHwTemps;
+};
+
+GLboolean radeonPairProgram(GLcontext *ctx, struct gl_program *program,
+	const struct radeon_pair_handler*, void *userdata);
+
+void radeonPrintPairInstruction(struct radeon_pair_instruction *inst);
+
+#endif /* __RADEON_PROGRAM_PAIR_H_ */