r300: Detangle fragment program compiler from driver-specific structure

This is in preparation of sharing the fragment program compiler with Gallium:
Compiler code is moved into its own directory and modified so that it no
longer depends on driver structures.

Signed-off-by: Nicolai Hähnle <[email protected]>

1 files changed, 162 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h
new file mode 100644
index 00000000000..e1a691db4fb
--- /dev/null
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2009 Nicolai Hähnle <[email protected]>
+ *
+ * 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
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR 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_COMPILER_H
+#define RADEON_COMPILER_H
+
+#include "main/mtypes.h"
+#include "shader/prog_instruction.h"
+
+#define R300_PFS_MAX_ALU_INST     64
+#define R300_PFS_MAX_TEX_INST     32
+#define R300_PFS_MAX_TEX_INDIRECT 4
+#define R300_PFS_NUM_TEMP_REGS    32
+#define R300_PFS_NUM_CONST_REGS   32
+
+#define R500_PFS_MAX_INST         512
+#define R500_PFS_NUM_TEMP_REGS    128
+#define R500_PFS_NUM_CONST_REGS   256
+
+
+#define STATE_R300_WINDOW_DIMENSION (STATE_INTERNAL_DRIVER+0)
+#define STATE_R300_TEXRECT_FACTOR (STATE_INTERNAL_DRIVER+1)
+
+
+/**
+ * Stores state that influences the compilation of a fragment program.
+ */
+struct r300_fragment_program_external_state {
+	struct {
+		/**
+		 * If the sampler is used as a shadow sampler,
+		 * this field is:
+		 *  0 - GL_LUMINANCE
+		 *  1 - GL_INTENSITY
+		 *  2 - GL_ALPHA
+		 * depending on the depth texture mode.
+		 */
+		GLuint depth_texture_mode : 2;
+
+		/**
+		 * If the sampler is used as a shadow sampler,
+		 * this field is (texture_compare_func - GL_NEVER).
+		 * [e.g. if compare function is GL_LEQUAL, this field is 3]
+		 *
+		 * Otherwise, this field is 0.
+		 */
+		GLuint texture_compare_func : 3;
+	} unit[16];
+};
+
+
+
+struct r300_fragment_program_node {
+	int tex_offset; /**< first tex instruction */
+	int tex_end; /**< last tex instruction, relative to tex_offset */
+	int alu_offset; /**< first ALU instruction */
+	int alu_end; /**< last ALU instruction, relative to alu_offset */
+	int flags;
+};
+
+/**
+ * Stores an R300 fragment program in its compiled-to-hardware form.
+ */
+struct r300_fragment_program_code {
+	struct {
+		int length; /**< total # of texture instructions used */
+		GLuint inst[R300_PFS_MAX_TEX_INST];
+	} tex;
+
+	struct {
+		int length; /**< total # of ALU instructions used */
+		struct {
+			GLuint inst0;
+			GLuint inst1;
+			GLuint inst2;
+			GLuint inst3;
+		} inst[R300_PFS_MAX_ALU_INST];
+	} alu;
+
+	struct r300_fragment_program_node node[4];
+	int cur_node;
+	int first_node_has_tex;
+
+	/**
+	 * Remember which program register a given hardware constant
+	 * belongs to.
+	 */
+	struct prog_src_register constant[R300_PFS_NUM_CONST_REGS];
+	int const_nr;
+
+	int max_temp_idx;
+};
+
+
+struct r500_fragment_program_code {
+	struct {
+		GLuint inst0;
+		GLuint inst1;
+		GLuint inst2;
+		GLuint inst3;
+		GLuint inst4;
+		GLuint inst5;
+	} inst[R500_PFS_MAX_INST];
+
+	int inst_offset;
+	int inst_end;
+
+	/**
+	 * Remember which program register a given hardware constant
+	 * belongs to.
+	 */
+	struct prog_src_register constant[R500_PFS_NUM_CONST_REGS];
+	int const_nr;
+
+	int max_temp_idx;
+};
+
+struct rX00_fragment_program_code {
+	union {
+		struct r300_fragment_program_code r300;
+		struct r500_fragment_program_code r500;
+	} code;
+
+	GLboolean writes_depth;
+
+	/* attribute that we are sending the WPOS in */
+	gl_frag_attrib wpos_attr;
+	/* attribute that we are sending the fog coordinate in */
+	gl_frag_attrib fog_attr;
+};
+
+struct r300_fragment_program_compiler {
+	GLcontext * ctx;
+	struct rX00_fragment_program_code *code;
+	struct gl_program *program;
+	struct r300_fragment_program_external_state state;
+	GLboolean is_r500;
+	GLboolean debug;
+};
+
+GLboolean r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c);
+
+#endif /* RADEON_COMPILER_H */