Initial check-in of i915 fragment program translation (from tgsi).

1 files changed, 339 insertions, 0 deletions

diff --git a/src/mesa/pipe/i915simple/i915_fpc.h b/src/mesa/pipe/i915simple/i915_fpc.h
new file mode 100644
index 0000000000..0a8bffcd9a
--- /dev/null
+++ b/src/mesa/pipe/i915simple/i915_fpc.h
@@ -0,0 +1,339 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, 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 TUNGSTEN GRAPHICS 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 I915_FPC_H
+#define I915_FPC_H
+
+#include "pipe/p_util.h"
+
+#include "i915_context.h"
+#include "i915_reg.h"
+
+
+
+#define I915_PROGRAM_SIZE 192
+#define I915_MAX_CONSTANT  32
+
+#define MAX_VARYING 8
+
+enum
+{
+   FRAG_ATTRIB_WPOS = 0,
+   FRAG_ATTRIB_COL0 = 1,
+   FRAG_ATTRIB_COL1 = 2,
+   FRAG_ATTRIB_FOGC = 3,
+   FRAG_ATTRIB_TEX0 = 4,
+   FRAG_ATTRIB_TEX1 = 5,
+   FRAG_ATTRIB_TEX2 = 6,
+   FRAG_ATTRIB_TEX3 = 7,
+   FRAG_ATTRIB_TEX4 = 8,
+   FRAG_ATTRIB_TEX5 = 9,
+   FRAG_ATTRIB_TEX6 = 10,
+   FRAG_ATTRIB_TEX7 = 11,
+   FRAG_ATTRIB_VAR0 = 12,  /**< shader varying */
+   FRAG_ATTRIB_MAX = (FRAG_ATTRIB_VAR0 + MAX_VARYING)
+};
+
+/**
+ * Bitflags for fragment program input attributes.
+ */
+/*@{*/
+#define FRAG_BIT_WPOS  (1 << FRAG_ATTRIB_WPOS)
+#define FRAG_BIT_COL0  (1 << FRAG_ATTRIB_COL0)
+#define FRAG_BIT_COL1  (1 << FRAG_ATTRIB_COL1)
+#define FRAG_BIT_FOGC  (1 << FRAG_ATTRIB_FOGC)
+#define FRAG_BIT_TEX0  (1 << FRAG_ATTRIB_TEX0)
+#define FRAG_BIT_TEX1  (1 << FRAG_ATTRIB_TEX1)
+#define FRAG_BIT_TEX2  (1 << FRAG_ATTRIB_TEX2)
+#define FRAG_BIT_TEX3  (1 << FRAG_ATTRIB_TEX3)
+#define FRAG_BIT_TEX4  (1 << FRAG_ATTRIB_TEX4)
+#define FRAG_BIT_TEX5  (1 << FRAG_ATTRIB_TEX5)
+#define FRAG_BIT_TEX6  (1 << FRAG_ATTRIB_TEX6)
+#define FRAG_BIT_TEX7  (1 << FRAG_ATTRIB_TEX7)
+#define FRAG_BIT_VAR0  (1 << FRAG_ATTRIB_VAR0)
+
+#define MAX_DRAW_BUFFERS 4
+
+enum
+{
+   FRAG_RESULT_COLR = 0,
+   FRAG_RESULT_COLH = 1,
+   FRAG_RESULT_DEPR = 2,
+   FRAG_RESULT_DATA0 = 3,
+   FRAG_RESULT_MAX = (FRAG_RESULT_DATA0 + MAX_DRAW_BUFFERS)
+};
+
+
+
+#if 1 /*XXX temp */
+/* Hardware version of a parsed fragment program.  "Derived" from the
+ * mesa fragment_program struct.
+ */
+struct i915_fragment_program
+{
+#if 0
+   struct gl_fragment_program Base;
+#else
+   uint NumNativeInstructions;
+   uint NumNativeAluInstructions;
+   uint NumNativeTexInstructions;
+   uint NumNativeTexIndirections;
+#endif
+
+   boolean error;      /**< Set if i915_program_error() is called */
+#if 0
+   uint id;            /**< String id */
+   boolean translated;
+#endif
+
+   /* Decls + instructions: 
+    */
+   uint program[I915_PROGRAM_SIZE];
+   uint program_size;
+   
+#if 0
+   /* Constant buffer:
+    */
+   float constant[I915_MAX_CONSTANT][4];
+   uint nr_constants;
+#endif
+
+   /* Some of which are parameters: 
+    */
+   struct
+   {
+      uint reg;               /* Hardware constant idx */
+      const float *values;    /* Pointer to tracked values */
+   } param[I915_MAX_CONSTANT];
+   uint nr_params;
+
+#if 0
+   uint param_state;
+#endif
+   uint wpos_tex;
+};
+#endif
+
+
+/***********************************************************************
+ * Public interface for the compiler
+ */
+
+void i915_compile_fragment_program( struct i915_context *i915,
+				    struct i915_fragment_program *fp );
+
+
+/***********************************************************************
+ * Private details of the compiler
+ */
+
+struct i915_fp_compile {
+   struct i915_fragment_program *fp;
+
+   struct pipe_shader_state *shader;
+
+   uint declarations[I915_PROGRAM_SIZE];
+   uint program[I915_PROGRAM_SIZE];
+
+   uint constant_flags[I915_MAX_CONSTANT];
+
+   struct pipe_constant_buffer *constants;
+
+   uint *csr;                 /* Cursor, points into program.
+                                 */
+
+   uint *decl;                /* Cursor, points into declarations.
+                                 */
+
+   uint decl_s;               /* flags for which s regs need to be decl'd */
+   uint decl_t;               /* flags for which t regs need to be decl'd */
+
+   uint temp_flag;            /* Tracks temporary regs which are in
+                                 * use.
+                                 */
+
+   uint utemp_flag;           /* Tracks TYPE_U temporary regs which are in
+                                 * use.
+                                 */
+
+   uint nr_tex_indirect;
+   uint nr_tex_insn;
+   uint nr_alu_insn;
+   uint nr_decl_insn;
+
+#if 0
+   float (*env_param)[4];
+#endif
+};
+
+
+/* Having zero and one in here makes the definition of swizzle a lot
+ * easier.
+ */
+#define UREG_TYPE_SHIFT               29
+#define UREG_NR_SHIFT                 24
+#define UREG_CHANNEL_X_NEGATE_SHIFT   23
+#define UREG_CHANNEL_X_SHIFT          20
+#define UREG_CHANNEL_Y_NEGATE_SHIFT   19
+#define UREG_CHANNEL_Y_SHIFT          16
+#define UREG_CHANNEL_Z_NEGATE_SHIFT   15
+#define UREG_CHANNEL_Z_SHIFT          12
+#define UREG_CHANNEL_W_NEGATE_SHIFT   11
+#define UREG_CHANNEL_W_SHIFT          8
+#define UREG_CHANNEL_ZERO_NEGATE_MBZ  5
+#define UREG_CHANNEL_ZERO_SHIFT       4
+#define UREG_CHANNEL_ONE_NEGATE_MBZ   1
+#define UREG_CHANNEL_ONE_SHIFT        0
+
+#define UREG_BAD          0xffffffff    /* not a valid ureg */
+
+#define X    SRC_X
+#define Y    SRC_Y
+#define Z    SRC_Z
+#define W    SRC_W
+#define ZERO SRC_ZERO
+#define ONE  SRC_ONE
+
+/* Construct a ureg:
+ */
+#define UREG( type, nr ) (((type)<< UREG_TYPE_SHIFT) |		\
+			  ((nr)  << UREG_NR_SHIFT) |		\
+			  (X     << UREG_CHANNEL_X_SHIFT) |	\
+			  (Y     << UREG_CHANNEL_Y_SHIFT) |	\
+			  (Z     << UREG_CHANNEL_Z_SHIFT) |	\
+			  (W     << UREG_CHANNEL_W_SHIFT) |	\
+			  (ZERO  << UREG_CHANNEL_ZERO_SHIFT) |	\
+			  (ONE   << UREG_CHANNEL_ONE_SHIFT))
+
+#define GET_CHANNEL_SRC( reg, channel ) ((reg<<(channel*4)) & (0xf<<20))
+#define CHANNEL_SRC( src, channel ) (src>>(channel*4))
+
+#define GET_UREG_TYPE(reg) (((reg)>>UREG_TYPE_SHIFT)&REG_TYPE_MASK)
+#define GET_UREG_NR(reg)   (((reg)>>UREG_NR_SHIFT)&REG_NR_MASK)
+
+
+
+#define UREG_XYZW_CHANNEL_MASK 0x00ffff00
+
+/* One neat thing about the UREG representation:  
+ */
+static INLINE int
+swizzle(int reg, int x, int y, int z, int w)
+{
+   assert(x < 4);
+   assert(y < 4);
+   assert(z < 4);
+   assert(w < 4);
+   return ((reg & ~UREG_XYZW_CHANNEL_MASK) |
+           CHANNEL_SRC(GET_CHANNEL_SRC(reg, x), 0) |
+           CHANNEL_SRC(GET_CHANNEL_SRC(reg, y), 1) |
+           CHANNEL_SRC(GET_CHANNEL_SRC(reg, z), 2) |
+           CHANNEL_SRC(GET_CHANNEL_SRC(reg, w), 3));
+}
+
+/* Another neat thing about the UREG representation:  
+ */
+static INLINE int
+negate(int reg, int x, int y, int z, int w)
+{
+   return reg ^ (((x & 1) << UREG_CHANNEL_X_NEGATE_SHIFT) |
+                 ((y & 1) << UREG_CHANNEL_Y_NEGATE_SHIFT) |
+                 ((z & 1) << UREG_CHANNEL_Z_NEGATE_SHIFT) |
+                 ((w & 1) << UREG_CHANNEL_W_NEGATE_SHIFT));
+}
+
+
+extern uint i915_get_temp(struct i915_fp_compile *p);
+extern uint i915_get_utemp(struct i915_fp_compile *p);
+extern void i915_release_utemps(struct i915_fp_compile *p);
+
+
+extern uint i915_emit_texld(struct i915_fp_compile *p,
+                              uint dest,
+                              uint destmask,
+                              uint sampler, uint coord, uint op);
+
+extern uint i915_emit_arith(struct i915_fp_compile *p,
+                              uint op,
+                              uint dest,
+                              uint mask,
+                              uint saturate,
+                              uint src0, uint src1, uint src2);
+
+extern uint i915_emit_decl(struct i915_fp_compile *p,
+                             uint type, uint nr, uint d0_flags);
+
+
+extern uint i915_emit_const1f(struct i915_fp_compile *p, float c0);
+
+extern uint i915_emit_const2f(struct i915_fp_compile *p,
+                                float c0, float c1);
+
+extern uint i915_emit_const4fv(struct i915_fp_compile *p,
+                                 const float * c);
+
+extern uint i915_emit_const4f(struct i915_fp_compile *p,
+                                float c0, float c1,
+                                float c2, float c3);
+
+
+#if 0
+extern uint i915_emit_param4fv(struct i915_fp_compile *p,
+                                 const float * values);
+#endif
+
+
+
+/*======================================================================
+ * i915_fpc_debug.c
+ */
+extern void i915_program_error(struct i915_fp_compile *p,
+                               const char *msg);
+
+
+/*======================================================================
+ * i915_fpc_debug.c
+ */
+extern void i915_disassemble_program(const uint * program, uint sz);
+
+#if 0
+extern void i915_print_mesa_instructions( const struct prog_instruction *insn,
+					  uint nr );
+#endif
+
+/*======================================================================
+ * i915_fpc_translate.c
+ */
+void i915_fixup_depth_write(struct i915_fp_compile *p);
+
+extern void
+i915_translate_program(struct i915_fp_compile *p, const struct tgsi_token *token);
+
+
+
+#endif