Add Intel i965G/Q DRI driver.

This driver comes from Tungsten Graphics, with a few further modifications by
Intel.

1 files changed, 1663 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_vs_tnl.c b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
new file mode 100644
index 0000000000..b296883d3b
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_vs_tnl.c
@@ -0,0 +1,1663 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 2005  Tungsten Graphics   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 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
+ * TUNGSTEN GRAPHICS 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.
+ */
+
+/**
+ * \file t_vp_build.c
+ * Create a vertex program to execute the current fixed function T&L pipeline.
+ * \author Keith Whitwell
+ */
+
+
+#include "glheader.h"
+#include "macros.h"
+#include "enums.h"
+#include "brw_vs.h"
+#include "brw_state.h"
+
+#include "shader/program.h"
+#include "shader/program_instruction.h"
+#include "shader/arbprogparse.h"
+
+struct state_key {
+   unsigned light_global_enabled:1;
+   unsigned light_local_viewer:1;
+   unsigned light_twoside:1;
+   unsigned light_color_material:1;
+   unsigned light_color_material_mask:12;
+   unsigned light_material_mask:12;
+   unsigned normalize:1;
+   unsigned rescale_normals:1;
+   unsigned fog_source_is_depth:1;
+   unsigned tnl_do_vertex_fog:1;
+   unsigned separate_specular:1;
+   unsigned fog_option:2;
+   unsigned point_attenuated:1;
+   unsigned texture_enabled_global:1;
+   unsigned fragprog_inputs_read:12;
+
+   struct {
+      unsigned light_enabled:1;
+      unsigned light_eyepos3_is_zero:1;
+      unsigned light_spotcutoff_is_180:1;
+      unsigned light_attenuated:1;      
+      unsigned texunit_really_enabled:1;
+      unsigned texmat_enabled:1;
+      unsigned texgen_enabled:4;
+      unsigned texgen_mode0:4;
+      unsigned texgen_mode1:4;
+      unsigned texgen_mode2:4;
+      unsigned texgen_mode3:4;
+   } unit[8];
+};
+
+
+
+#define FOG_NONE   0
+#define FOG_LINEAR 1
+#define FOG_EXP    2
+#define FOG_EXP2   3
+
+static GLuint translate_fog_mode( GLenum mode )
+{
+   switch (mode) {
+   case GL_LINEAR: return FOG_LINEAR;
+   case GL_EXP: return FOG_EXP;
+   case GL_EXP2: return FOG_EXP2;
+   default: return FOG_NONE;
+   }
+}
+
+#define TXG_NONE           0
+#define TXG_OBJ_LINEAR     1
+#define TXG_EYE_LINEAR     2
+#define TXG_SPHERE_MAP     3
+#define TXG_REFLECTION_MAP 4
+#define TXG_NORMAL_MAP     5
+
+static GLuint translate_texgen( GLboolean enabled, GLenum mode )
+{
+   if (!enabled)
+      return TXG_NONE;
+
+   switch (mode) {
+   case GL_OBJECT_LINEAR: return TXG_OBJ_LINEAR;
+   case GL_EYE_LINEAR: return TXG_EYE_LINEAR;
+   case GL_SPHERE_MAP: return TXG_SPHERE_MAP;
+   case GL_REFLECTION_MAP_NV: return TXG_REFLECTION_MAP;
+   case GL_NORMAL_MAP_NV: return TXG_NORMAL_MAP;
+   default: return TXG_NONE;
+   }
+}
+
+static void make_state_key( GLcontext *ctx, struct state_key *key )
+{
+   struct brw_context *brw = brw_context(ctx);
+   struct gl_fragment_program *fp = brw->fragment_program;
+   GLuint i;
+
+   /* This now relies on texenvprogram.c being active:
+    */
+   assert(fp);
+
+   memset(key, 0, sizeof(*key));
+
+   /* BRW_NEW_FRAGMENT_PROGRAM */
+   key->fragprog_inputs_read = fp->Base.InputsRead;
+
+   /* _NEW_LIGHT */
+   key->separate_specular = (brw->attribs.Light->Model.ColorControl ==
+			     GL_SEPARATE_SPECULAR_COLOR);
+
+   /* _NEW_LIGHT */
+   if (brw->attribs.Light->Enabled) {
+      key->light_global_enabled = 1;
+
+      if (brw->attribs.Light->Model.LocalViewer)
+	 key->light_local_viewer = 1;
+
+      if (brw->attribs.Light->Model.TwoSide)
+	 key->light_twoside = 1;
+
+      if (brw->attribs.Light->ColorMaterialEnabled) {
+	 key->light_color_material = 1;
+	 key->light_color_material_mask = brw->attribs.Light->ColorMaterialBitmask;
+      }
+
+      /* BRW_NEW_INPUT_VARYING */
+      for (i = BRW_ATTRIB_MAT_FRONT_AMBIENT ; i < BRW_ATTRIB_INDEX ; i++) 
+	 if (brw->vb.info.varying[0] & (1<<i)) 
+	    key->light_material_mask |= 1<<(i-BRW_ATTRIB_MAT_FRONT_AMBIENT);
+
+      for (i = 0; i < MAX_LIGHTS; i++) {
+	 struct gl_light *light = &brw->attribs.Light->Light[i];
+
+	 if (light->Enabled) {
+	    key->unit[i].light_enabled = 1;
+
+	    if (light->EyePosition[3] == 0.0)
+	       key->unit[i].light_eyepos3_is_zero = 1;
+	    
+	    if (light->SpotCutoff == 180.0)
+	       key->unit[i].light_spotcutoff_is_180 = 1;
+
+	    if (light->ConstantAttenuation != 1.0 ||
+		light->LinearAttenuation != 0.0 ||
+		light->QuadraticAttenuation != 0.0)
+	       key->unit[i].light_attenuated = 1;
+	 }
+      }
+   }
+
+   /* _NEW_TRANSFORM */
+   if (brw->attribs.Transform->Normalize)
+      key->normalize = 1;
+
+   if (brw->attribs.Transform->RescaleNormals)
+      key->rescale_normals = 1;
+
+   /* BRW_NEW_FRAGMENT_PROGRAM */
+   key->fog_option = translate_fog_mode(fp->FogOption);
+   if (key->fog_option)
+      key->fragprog_inputs_read |= FRAG_BIT_FOGC;
+   
+   /* _NEW_FOG */
+   if (brw->attribs.Fog->FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT)
+      key->fog_source_is_depth = 1;
+   
+   /* _NEW_HINT, ??? */
+   if (1)
+      key->tnl_do_vertex_fog = 1;
+
+   /* _NEW_POINT */
+   if (brw->attribs.Point->_Attenuated)
+      key->point_attenuated = 1;
+
+   /* _NEW_TEXTURE */
+   if (brw->attribs.Texture->_TexGenEnabled ||
+       brw->attribs.Texture->_TexMatEnabled ||
+       brw->attribs.Texture->_EnabledUnits)
+      key->texture_enabled_global = 1;
+      
+   for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
+      struct gl_texture_unit *texUnit = &brw->attribs.Texture->Unit[i];
+
+      if (texUnit->_ReallyEnabled)
+ 	 key->unit[i].texunit_really_enabled = 1;
+
+      if (brw->attribs.Texture->_TexMatEnabled & ENABLE_TEXMAT(i))      
+	 key->unit[i].texmat_enabled = 1;
+      
+      if (texUnit->TexGenEnabled) {
+	 key->unit[i].texgen_enabled = 1;
+      
+	 key->unit[i].texgen_mode0 = 
+	    translate_texgen( texUnit->TexGenEnabled & (1<<0),
+			      texUnit->GenModeS );
+	 key->unit[i].texgen_mode1 = 
+	    translate_texgen( texUnit->TexGenEnabled & (1<<1),
+			      texUnit->GenModeT );
+	 key->unit[i].texgen_mode2 = 
+	    translate_texgen( texUnit->TexGenEnabled & (1<<2),
+			      texUnit->GenModeR );
+	 key->unit[i].texgen_mode3 = 
+	    translate_texgen( texUnit->TexGenEnabled & (1<<3),
+			      texUnit->GenModeQ );
+      }
+   }
+}
+
+
+   
+/* Very useful debugging tool - produces annotated listing of
+ * generated program with line/function references for each
+ * instruction back into this file:
+ */
+#define DISASSEM 0
+
+/* Should be tunable by the driver - do we want to do matrix
+ * multiplications with DP4's or with MUL/MAD's?  SSE works better
+ * with the latter, drivers may differ.
+ */
+#define PREFER_DP4 1
+
+#define BRW_TNL_MAX_INSN 256
+
+/* Use uregs to represent registers internally, translate to Mesa's
+ * expected formats on emit.  
+ *
+ * NOTE: These are passed by value extensively in this file rather
+ * than as usual by pointer reference.  If this disturbs you, try
+ * remembering they are just 32bits in size.
+ *
+ * GCC is smart enough to deal with these dword-sized structures in
+ * much the same way as if I had defined them as dwords and was using
+ * macros to access and set the fields.  This is much nicer and easier
+ * to evolve.
+ */
+struct ureg {
+   GLuint file:4;
+   GLint idx:8;      /* relative addressing may be negative */
+   GLuint negate:1;
+   GLuint swz:12;
+   GLuint pad:7;
+};
+
+
+struct tnl_program {
+   const struct state_key *state;
+   struct gl_vertex_program *program;
+   
+   GLuint temp_in_use;
+   GLuint temp_reserved;
+   
+   struct ureg eye_position;
+   struct ureg eye_position_normalized;
+   struct ureg eye_normal;
+   struct ureg identity;
+
+   GLuint materials;
+   GLuint color_materials;
+};
+
+
+const static struct ureg undef = { 
+   PROGRAM_UNDEFINED,
+   ~0,
+   0,
+   0,
+   0
+};
+
+/* Local shorthand:
+ */
+#define X    SWIZZLE_X
+#define Y    SWIZZLE_Y
+#define Z    SWIZZLE_Z
+#define W    SWIZZLE_W
+
+
+/* Construct a ureg:
+ */
+static struct ureg make_ureg(GLuint file, GLint idx)
+{
+   struct ureg reg;
+   reg.file = file;
+   reg.idx = idx;
+   reg.negate = 0;
+   reg.swz = SWIZZLE_NOOP;
+   reg.pad = 0;
+   return reg;
+}
+
+
+
+static struct ureg ureg_negate( struct ureg reg )
+{
+   reg.negate ^= 1;
+   return reg;
+} 
+
+
+static struct ureg swizzle( struct ureg reg, int x, int y, int z, int w )
+{
+   reg.swz = MAKE_SWIZZLE4(GET_SWZ(reg.swz, x),
+			   GET_SWZ(reg.swz, y),
+			   GET_SWZ(reg.swz, z),
+			   GET_SWZ(reg.swz, w));
+
+   return reg;
+}
+
+static struct ureg swizzle1( struct ureg reg, int x )
+{
+   return swizzle(reg, x, x, x, x);
+}
+
+static struct ureg get_temp( struct tnl_program *p )
+{
+   int bit = ffs( ~p->temp_in_use );
+   if (!bit) {
+      fprintf(stderr, "%s: out of temporaries\n", __FILE__);
+      abort();
+   }
+
+   if (bit > p->program->Base.NumTemporaries)
+      p->program->Base.NumTemporaries = bit;
+
+   p->temp_in_use |= 1<<(bit-1);
+   return make_ureg(PROGRAM_TEMPORARY, bit-1);
+}
+
+static struct ureg reserve_temp( struct tnl_program *p )
+{
+   struct ureg temp = get_temp( p );
+   p->temp_reserved |= 1<<temp.idx;
+   return temp;
+}
+
+static void release_temp( struct tnl_program *p, struct ureg reg )
+{
+   if (reg.file == PROGRAM_TEMPORARY) {
+      p->temp_in_use &= ~(1<<reg.idx);
+      p->temp_in_use |= p->temp_reserved; /* can't release reserved temps */
+   }
+}
+
+static void release_temps( struct tnl_program *p )
+{
+   p->temp_in_use = p->temp_reserved;
+}
+
+
+
+static struct ureg register_input( struct tnl_program *p, GLuint input )
+{
+   p->program->Base.InputsRead |= (1<<input);
+   return make_ureg(PROGRAM_INPUT, input);
+}
+
+static struct ureg register_output( struct tnl_program *p, GLuint output )
+{
+   p->program->Base.OutputsWritten |= (1<<output);
+   return make_ureg(PROGRAM_OUTPUT, output);
+}
+
+static struct ureg register_const4f( struct tnl_program *p, 
+			      GLfloat s0,
+			      GLfloat s1,
+			      GLfloat s2,
+			      GLfloat s3)
+{
+   GLfloat values[4];
+   GLint idx;
+   values[0] = s0;
+   values[1] = s1;
+   values[2] = s2;
+   values[3] = s3;
+   idx = _mesa_add_unnamed_constant( p->program->Base.Parameters, values );
+   return make_ureg(PROGRAM_STATE_VAR, idx);
+}
+
+#define register_const1f(p, s0)         register_const4f(p, s0, 0, 0, 1)
+#define register_scalar_const(p, s0)    register_const4f(p, s0, s0, s0, s0)
+#define register_const2f(p, s0, s1)     register_const4f(p, s0, s1, 0, 1)
+#define register_const3f(p, s0, s1, s2) register_const4f(p, s0, s1, s2, 1)
+
+static GLboolean is_undef( struct ureg reg )
+{
+   return reg.file == PROGRAM_UNDEFINED;
+}
+
+static struct ureg get_identity_param( struct tnl_program *p )
+{
+   if (is_undef(p->identity)) 
+      p->identity = register_const4f(p, 0,0,0,1);
+
+   return p->identity;
+}
+
+static struct ureg register_param6( struct tnl_program *p, 
+				   GLint s0,
+				   GLint s1,
+				   GLint s2,
+				   GLint s3,
+				   GLint s4,
+				   GLint s5)
+{
+   GLint tokens[6];
+   GLint idx;
+   tokens[0] = s0;
+   tokens[1] = s1;
+   tokens[2] = s2;
+   tokens[3] = s3;
+   tokens[4] = s4;
+   tokens[5] = s5;
+   idx = _mesa_add_state_reference( p->program->Base.Parameters, tokens );
+   return make_ureg(PROGRAM_STATE_VAR, idx);
+}
+
+
+#define register_param1(p,s0)          register_param6(p,s0,0,0,0,0,0)
+#define register_param2(p,s0,s1)       register_param6(p,s0,s1,0,0,0,0)
+#define register_param3(p,s0,s1,s2)    register_param6(p,s0,s1,s2,0,0,0)
+#define register_param4(p,s0,s1,s2,s3) register_param6(p,s0,s1,s2,s3,0,0)
+
+
+static void register_matrix_param6( struct tnl_program *p,
+				    GLint s0,
+				    GLint s1,
+				    GLint s2,
+				    GLint s3,
+				    GLint s4,
+				    GLint s5,
+				    struct ureg *matrix )
+{
+   GLint i;
+
+   /* This is a bit sad as the support is there to pull the whole
+    * matrix out in one go:
+    */
+   for (i = 0; i <= s4 - s3; i++) 
+      matrix[i] = register_param6( p, s0, s1, s2, i, i, s5 );
+}
+
+
+static void emit_arg( struct prog_src_register *src,
+		      struct ureg reg )
+{
+   src->File = reg.file;
+   src->Index = reg.idx;
+   src->Swizzle = reg.swz;
+   src->RelAddr = 0;
+   src->NegateBase = reg.negate;
+   src->Abs = 0;
+   src->NegateAbs = 0;
+}
+
+static void emit_dst( struct prog_dst_register *dst,
+		      struct ureg reg, GLuint mask )
+{
+   dst->File = reg.file;
+   dst->Index = reg.idx;
+   /* allow zero as a shorthand for xyzw */
+   dst->WriteMask = mask ? mask : WRITEMASK_XYZW; 
+   dst->CondMask = 0;
+   dst->CondSwizzle = 0;
+   dst->CondSrc = 0;
+   dst->pad = 0;
+}
+
+static void debug_insn( struct prog_instruction *inst, const char *fn,
+			GLuint line )
+{
+   if (DISASSEM) {
+      static const char *last_fn;
+   
+      if (fn != last_fn) {
+	 last_fn = fn;
+	 _mesa_printf("%s:\n", fn);
+      }
+	 
+      _mesa_printf("%d:\t", line);
+      _mesa_print_instruction(inst);
+   }
+}
+
+
+static void emit_op3fn(struct tnl_program *p,
+		       GLuint op,
+		       struct ureg dest,
+		       GLuint mask,
+		       struct ureg src0,
+		       struct ureg src1,
+		       struct ureg src2,
+		       const char *fn,
+		       GLuint line)
+{
+   GLuint nr = p->program->Base.NumInstructions++;
+   struct prog_instruction *inst = &p->program->Base.Instructions[nr];
+      
+   if (p->program->Base.NumInstructions > BRW_TNL_MAX_INSN) {
+      _mesa_problem(0, "Out of instructions in emit_op3fn\n");
+      return;
+   }
+      
+   inst->Opcode = op; 
+   inst->StringPos = 0;
+   inst->Data = 0;
+   
+   emit_arg( &inst->SrcReg[0], src0 );
+   emit_arg( &inst->SrcReg[1], src1 );
+   emit_arg( &inst->SrcReg[2], src2 );   
+
+   emit_dst( &inst->DstReg, dest, mask );
+
+   debug_insn(inst, fn, line);
+}
+
+   
+
+#define emit_op3(p, op, dst, mask, src0, src1, src2) \
+   emit_op3fn(p, op, dst, mask, src0, src1, src2, __FUNCTION__, __LINE__)
+
+#define emit_op2(p, op, dst, mask, src0, src1) \
+    emit_op3fn(p, op, dst, mask, src0, src1, undef, __FUNCTION__, __LINE__)
+
+#define emit_op1(p, op, dst, mask, src0) \
+    emit_op3fn(p, op, dst, mask, src0, undef, undef, __FUNCTION__, __LINE__)
+
+
+static struct ureg make_temp( struct tnl_program *p, struct ureg reg )
+{
+   if (reg.file == PROGRAM_TEMPORARY && 
+       !(p->temp_reserved & (1<<reg.idx)))
+      return reg;
+   else {
+      struct ureg temp = get_temp(p);
+      emit_op1(p, OPCODE_MOV, temp, 0, reg);
+      return temp;
+   }
+}
+
+
+/* Currently no tracking performed of input/output/register size or
+ * active elements.  Could be used to reduce these operations, as
+ * could the matrix type.
+ */
+static void emit_matrix_transform_vec4( struct tnl_program *p,
+					struct ureg dest,
+					const struct ureg *mat,
+					struct ureg src)
+{
+   emit_op2(p, OPCODE_DP4, dest, WRITEMASK_X, src, mat[0]);
+   emit_op2(p, OPCODE_DP4, dest, WRITEMASK_Y, src, mat[1]);
+   emit_op2(p, OPCODE_DP4, dest, WRITEMASK_Z, src, mat[2]);
+   emit_op2(p, OPCODE_DP4, dest, WRITEMASK_W, src, mat[3]);
+}
+
+/* This version is much easier to implement if writemasks are not
+ * supported natively on the target or (like SSE), the target doesn't
+ * have a clean/obvious dotproduct implementation.
+ */
+static void emit_transpose_matrix_transform_vec4( struct tnl_program *p,
+						  struct ureg dest,
+						  const struct ureg *mat,
+						  struct ureg src)
+{
+   struct ureg tmp;
+
+   if (dest.file != PROGRAM_TEMPORARY)
+      tmp = get_temp(p);
+   else
+      tmp = dest;
+
+   emit_op2(p, OPCODE_MUL, tmp, 0, swizzle1(src,X), mat[0]);
+   emit_op3(p, OPCODE_MAD, tmp, 0, swizzle1(src,Y), mat[1], tmp);
+   emit_op3(p, OPCODE_MAD, tmp, 0, swizzle1(src,Z), mat[2], tmp);
+   emit_op3(p, OPCODE_MAD, dest, 0, swizzle1(src,W), mat[3], tmp);
+
+   if (dest.file != PROGRAM_TEMPORARY)
+      release_temp(p, tmp);
+}
+
+static void emit_matrix_transform_vec3( struct tnl_program *p,
+					struct ureg dest,
+					const struct ureg *mat,
+					struct ureg src)
+{
+   emit_op2(p, OPCODE_DP3, dest, WRITEMASK_X, src, mat[0]);
+   emit_op2(p, OPCODE_DP3, dest, WRITEMASK_Y, src, mat[1]);
+   emit_op2(p, OPCODE_DP3, dest, WRITEMASK_Z, src, mat[2]);
+}
+
+
+static void emit_normalize_vec3( struct tnl_program *p,
+				 struct ureg dest,
+				 struct ureg src )
+{
+   emit_op2(p, OPCODE_DP3, dest, WRITEMASK_W, src, src);
+   emit_op1(p, OPCODE_RSQ, dest, WRITEMASK_W, swizzle1(dest,W));
+   emit_op2(p, OPCODE_MUL, dest, WRITEMASK_XYZ, src, swizzle1(dest,W));
+}
+
+static void emit_passthrough( struct tnl_program *p, 
+			      GLuint input,
+			      GLuint output )
+{
+   struct ureg out = register_output(p, output);
+   emit_op1(p, OPCODE_MOV, out, 0, register_input(p, input)); 
+}
+
+static struct ureg get_eye_position( struct tnl_program *p )
+{
+   if (is_undef(p->eye_position)) {
+      struct ureg pos = register_input( p, VERT_ATTRIB_POS ); 
+      struct ureg modelview[4];
+
+      p->eye_position = reserve_temp(p);
+
+      if (PREFER_DP4) {
+	 register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 3, 
+				 STATE_MATRIX, modelview );
+
+	 emit_matrix_transform_vec4(p, p->eye_position, modelview, pos);
+      }
+      else {
+	 register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 3, 
+				 STATE_MATRIX_TRANSPOSE, modelview );
+
+	 emit_transpose_matrix_transform_vec4(p, p->eye_position, modelview, pos);
+      }
+   }
+   
+   return p->eye_position;
+}
+
+
+#if 0
+static struct ureg get_eye_z( struct tnl_program *p )
+{
+   if (!is_undef(p->eye_position)) {
+      return swizzle1(p->eye_position, Z);
+   }
+   else if (!is_undef(p->eye_z)) {
+      struct ureg pos = register_input( p, VERT_ATTRIB_POS ); 
+      struct ureg modelview2;
+
+      p->eye_z = reserve_temp(p);
+
+      register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 2, 1, 
+			      STATE_MATRIX, &modelview2 );
+
+      emit_matrix_transform_vec4(p, p->eye_position, modelview, pos);
+      emit_op2(p, OPCODE_DP4, p->eye_z, WRITEMASK_Z, pos, modelview2);
+   }
+   
+   return swizzle1(p->eye_z, Z)
+}
+#endif
+
+
+
+static struct ureg get_eye_position_normalized( struct tnl_program *p )
+{
+   if (is_undef(p->eye_position_normalized)) {
+      struct ureg eye = get_eye_position(p);
+      p->eye_position_normalized = reserve_temp(p);
+      emit_normalize_vec3(p, p->eye_position_normalized, eye);
+   }
+   
+   return p->eye_position_normalized;
+}
+
+
+static struct ureg get_eye_normal( struct tnl_program *p )
+{
+   if (is_undef(p->eye_normal)) {
+      struct ureg normal = register_input(p, VERT_ATTRIB_NORMAL );
+      struct ureg mvinv[3];
+
+      register_matrix_param6( p, STATE_MATRIX, STATE_MODELVIEW, 0, 0, 2,
+			      STATE_MATRIX_INVTRANS, mvinv );
+
+      p->eye_normal = reserve_temp(p);
+
+      /* Transform to eye space:
+       */
+      emit_matrix_transform_vec3( p, p->eye_normal, mvinv, normal );
+
+      /* Normalize/Rescale:
+       */
+      if (p->state->normalize) {
+	 emit_normalize_vec3( p, p->eye_normal, p->eye_normal );
+      }
+      else if (p->state->rescale_normals) {
+	 struct ureg rescale = register_param2(p, STATE_INTERNAL,
+					       STATE_NORMAL_SCALE);
+
+	 emit_op2( p, OPCODE_MUL, p->eye_normal, 0, p->eye_normal, 
+		   swizzle1(rescale, X));
+      }
+   }
+
+   return p->eye_normal;
+}
+
+
+
+static void build_hpos( struct tnl_program *p )
+{
+   struct ureg pos = register_input( p, VERT_ATTRIB_POS ); 
+   struct ureg hpos = register_output( p, VERT_RESULT_HPOS );
+   struct ureg mvp[4];
+
+   if (PREFER_DP4) {
+      register_matrix_param6( p, STATE_MATRIX, STATE_MVP, 0, 0, 3, 
+			      STATE_MATRIX, mvp );
+      emit_matrix_transform_vec4( p, hpos, mvp, pos );
+   }
+   else {
+      register_matrix_param6( p, STATE_MATRIX, STATE_MVP, 0, 0, 3, 
+			      STATE_MATRIX_TRANSPOSE, mvp );
+      emit_transpose_matrix_transform_vec4( p, hpos, mvp, pos );
+   }
+}
+
+
+static GLuint material_attrib( GLuint side, GLuint property )
+{
+   return (property - STATE_AMBIENT) * 2 + side;
+}
+
+/* Get a bitmask of which material values vary on a per-vertex basis.
+ */
+static void set_material_flags( struct tnl_program *p )
+{
+   p->color_materials = 0;
+   p->materials = 0;
+
+   if (p->state->light_color_material) {
+      p->materials = 
+	 p->color_materials = p->state->light_color_material_mask;
+   }
+
+   p->materials |= p->state->light_material_mask;
+}
+
+
+static struct ureg get_material( struct tnl_program *p, GLuint side, 
+				 GLuint property )
+{
+   GLuint attrib = material_attrib(side, property);
+
+   if (p->color_materials & (1<<attrib))
+      return register_input(p, VERT_ATTRIB_COLOR0);
+   else if (p->materials & (1<<attrib)) 
+      return register_input( p, attrib + BRW_ATTRIB_MAT_FRONT_AMBIENT );
+   else
+      return register_param3( p, STATE_MATERIAL, side, property );
+}
+
+#define SCENE_COLOR_BITS(side) ((MAT_BIT_FRONT_EMISSION | \
+				 MAT_BIT_FRONT_AMBIENT | \
+				 MAT_BIT_FRONT_DIFFUSE) << (side))
+
+/* Either return a precalculated constant value or emit code to
+ * calculate these values dynamically in the case where material calls
+ * are present between begin/end pairs.
+ *
+ * Probably want to shift this to the program compilation phase - if
+ * we always emitted the calculation here, a smart compiler could
+ * detect that it was constant (given a certain set of inputs), and
+ * lift it out of the main loop.  That way the programs created here
+ * would be independent of the vertex_buffer details.
+ */
+static struct ureg get_scenecolor( struct tnl_program *p, GLuint side )
+{
+   if (p->materials & SCENE_COLOR_BITS(side)) {
+      struct ureg lm_ambient = register_param1(p, STATE_LIGHTMODEL_AMBIENT);
+      struct ureg material_emission = get_material(p, side, STATE_EMISSION);
+      struct ureg material_ambient = get_material(p, side, STATE_AMBIENT);
+      struct ureg material_diffuse = get_material(p, side, STATE_DIFFUSE);
+      struct ureg tmp = make_temp(p, material_diffuse);
+      emit_op3(p, OPCODE_MAD, tmp,  WRITEMASK_XYZ, lm_ambient, 
+	       material_ambient, material_emission);
+      return tmp;
+   }
+   else
+      return register_param2( p, STATE_LIGHTMODEL_SCENECOLOR, side );
+}
+
+
+static struct ureg get_lightprod( struct tnl_program *p, GLuint light, 
+				  GLuint side, GLuint property )
+{
+   GLuint attrib = material_attrib(side, property);
+   if (p->materials & (1<<attrib)) {
+      struct ureg light_value = 
+	 register_param3(p, STATE_LIGHT, light, property);
+      struct ureg material_value = get_material(p, side, property);
+      struct ureg tmp = get_temp(p);
+      emit_op2(p, OPCODE_MUL, tmp,  0, light_value, material_value);
+      return tmp;
+   }
+   else
+      return register_param4(p, STATE_LIGHTPROD, light, side, property);
+}
+
+static struct ureg calculate_light_attenuation( struct tnl_program *p,
+						GLuint i, 
+						struct ureg VPpli,
+						struct ureg dist )
+{
+   struct ureg attenuation = register_param3(p, STATE_LIGHT, i,
+					     STATE_ATTENUATION);
+   struct ureg att = get_temp(p);
+
+   /* Calculate spot attenuation:
+    */
+   if (!p->state->unit[i].light_spotcutoff_is_180) {
+      struct ureg spot_dir = register_param3(p, STATE_LIGHT, i,
+					     STATE_SPOT_DIRECTION);
+      struct ureg spot = get_temp(p);
+      struct ureg slt = get_temp(p);
+	       
+      emit_normalize_vec3( p, spot, spot_dir ); /* XXX: precompute! */
+      emit_op2(p, OPCODE_DP3, spot, 0, ureg_negate(VPpli), spot);
+      emit_op2(p, OPCODE_SLT, slt, 0, swizzle1(spot_dir,W), spot);
+      emit_op2(p, OPCODE_POW, spot, 0, spot, swizzle1(attenuation, W));
+      emit_op2(p, OPCODE_MUL, att, 0, slt, spot);
+
+      release_temp(p, spot);
+      release_temp(p, slt);
+   }
+
+   /* Calculate distance attenuation:
+    */
+   if (p->state->unit[i].light_attenuated) {
+
+      /* 1/d,d,d,1/d */
+      emit_op1(p, OPCODE_RCP, dist, WRITEMASK_YZ, dist); 
+      /* 1,d,d*d,1/d */
+      emit_op2(p, OPCODE_MUL, dist, WRITEMASK_XZ, dist, swizzle1(dist,Y)); 
+      /* 1/dist-atten */
+      emit_op2(p, OPCODE_DP3, dist, 0, attenuation, dist); 
+
+      if (!p->state->unit[i].light_spotcutoff_is_180) {
+	 /* dist-atten */
+	 emit_op1(p, OPCODE_RCP, dist, 0, dist); 
+	 /* spot-atten * dist-atten */
+	 emit_op2(p, OPCODE_MUL, att, 0, dist, att);	
+      } else {
+	 /* dist-atten */
+	 emit_op1(p, OPCODE_RCP, att, 0, dist); 
+      }
+   }
+
+   return att;
+}
+						
+
+
+
+
+/* Need to add some addtional parameters to allow lighting in object
+ * space - STATE_SPOT_DIRECTION and STATE_HALF implicitly assume eye
+ * space lighting.
+ */
+static void build_lighting( struct tnl_program *p )
+{
+   const GLboolean twoside = p->state->light_twoside;
+   const GLboolean separate = p->state->separate_specular;
+   GLuint nr_lights = 0, count = 0;
+   struct ureg normal = get_eye_normal(p);
+   struct ureg lit = get_temp(p);
+   struct ureg dots = get_temp(p);
+   struct ureg _col0 = undef, _col1 = undef;
+   struct ureg _bfc0 = undef, _bfc1 = undef;
+   GLuint i;
+
+   for (i = 0; i < MAX_LIGHTS; i++) 
+      if (p->state->unit[i].light_enabled)
+	 nr_lights++;
+   
+   set_material_flags(p);
+
+   {
+      struct ureg shininess = get_material(p, 0, STATE_SHININESS);
+      emit_op1(p, OPCODE_MOV, dots,  WRITEMASK_W, swizzle1(shininess,X));
+      release_temp(p, shininess);
+
+      _col0 = make_temp(p, get_scenecolor(p, 0));
+      if (separate)
+	 _col1 = make_temp(p, get_identity_param(p));
+      else
+	 _col1 = _col0;
+
+   }
+
+   if (twoside) {
+      struct ureg shininess = get_material(p, 1, STATE_SHININESS);
+      emit_op1(p, OPCODE_MOV, dots, WRITEMASK_Z, 
+	       ureg_negate(swizzle1(shininess,X)));
+      release_temp(p, shininess);
+
+      _bfc0 = make_temp(p, get_scenecolor(p, 1));
+      if (separate)
+	 _bfc1 = make_temp(p, get_identity_param(p));
+      else
+	 _bfc1 = _bfc0;
+   }
+
+
+   /* If no lights, still need to emit the scenecolor.
+    */
+   /* KW: changed to do this always - v1.17 "Fix lighting alpha result"? 
+    */
+   if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+   {
+      struct ureg res0 = register_output( p, VERT_RESULT_COL0 );
+      emit_op1(p, OPCODE_MOV, res0, 0, _col0);
+
+      if (twoside) {
+	 struct ureg res0 = register_output( p, VERT_RESULT_BFC0 );
+	 emit_op1(p, OPCODE_MOV, res0, 0, _bfc0);
+      }
+   }
+
+   if (separate && (p->state->fragprog_inputs_read & FRAG_BIT_COL1)) {
+
+      struct ureg res1 = register_output( p, VERT_RESULT_COL1 );
+      emit_op1(p, OPCODE_MOV, res1, 0, _col1);
+      
+      if (twoside) {
+	 struct ureg res1 = register_output( p, VERT_RESULT_BFC1 );
+	 emit_op1(p, OPCODE_MOV, res1, 0, _bfc1);
+      }
+   }
+      
+   if (nr_lights == 0) {
+      release_temps(p);
+      return;
+   }
+
+
+   for (i = 0; i < MAX_LIGHTS; i++) {
+      if (p->state->unit[i].light_enabled) {
+	 struct ureg half = undef;
+	 struct ureg att = undef, VPpli = undef;
+	  
+	 count++;
+
+	 if (p->state->unit[i].light_eyepos3_is_zero) {
+	    /* Can used precomputed constants in this case.
+	     * Attenuation never applies to infinite lights.
+	     */
+	    VPpli = register_param3(p, STATE_LIGHT, i, 
+				    STATE_POSITION_NORMALIZED); 
+	    half = register_param3(p, STATE_LIGHT, i, STATE_HALF);
+	 } 
+	 else {
+	    struct ureg Ppli = register_param3(p, STATE_LIGHT, i, 
+					       STATE_POSITION); 
+	    struct ureg V = get_eye_position(p);
+	    struct ureg dist = get_temp(p);
+
+	    VPpli = get_temp(p); 
+	    half = get_temp(p);
+ 
+	    /* Calulate VPpli vector
+	     */
+	    emit_op2(p, OPCODE_SUB, VPpli, 0, Ppli, V); 
+
+	    /* Normalize VPpli.  The dist value also used in
+	     * attenuation below.
+	     */
+	    emit_op2(p, OPCODE_DP3, dist, 0, VPpli, VPpli);
+	    emit_op1(p, OPCODE_RSQ, dist, 0, dist);
+	    emit_op2(p, OPCODE_MUL, VPpli, 0, VPpli, dist);
+
+
+	    /* Calculate  attenuation:
+	     */ 
+	    if (!p->state->unit[i].light_spotcutoff_is_180 ||
+		p->state->unit[i].light_attenuated) {
+	       att = calculate_light_attenuation(p, i, VPpli, dist);
+	    }
+	 
+      
+	    /* Calculate viewer direction, or use infinite viewer:
+	     */
+	    if (p->state->light_local_viewer) {
+	       struct ureg eye_hat = get_eye_position_normalized(p);
+	       emit_op2(p, OPCODE_SUB, half, 0, VPpli, eye_hat);
+	    }
+	    else {
+	       struct ureg z_dir = swizzle(get_identity_param(p),X,Y,W,Z); 
+	       emit_op2(p, OPCODE_ADD, half, 0, VPpli, z_dir);
+	    }
+
+	    emit_normalize_vec3(p, half, half);
+
+	    release_temp(p, dist);
+	 }
+
+	 /* Calculate dot products:
+	  */
+	 emit_op2(p, OPCODE_DP3, dots, WRITEMASK_X, normal, VPpli);
+	 emit_op2(p, OPCODE_DP3, dots, WRITEMASK_Y, normal, half);
+
+	
+	 /* Front face lighting:
+	  */
+	 {
+	    struct ureg ambient = get_lightprod(p, i, 0, STATE_AMBIENT);
+	    struct ureg diffuse = get_lightprod(p, i, 0, STATE_DIFFUSE);
+	    struct ureg specular = get_lightprod(p, i, 0, STATE_SPECULAR);
+	    struct ureg res0, res1;
+	    GLuint mask0, mask1;
+
+	    emit_op1(p, OPCODE_LIT, lit, 0, dots);
+   
+	    if (!is_undef(att)) 
+	       emit_op2(p, OPCODE_MUL, lit, 0, lit, att);
+
+
+	    mask0 = 0;
+	    mask1 = 0;
+	    res0 = _col0;
+	    res1 = _col1;
+	    
+	    if (count == nr_lights) {
+	       if (separate) {
+		  mask0 = WRITEMASK_XYZ;
+		  mask1 = WRITEMASK_XYZ;
+
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+		     res0 = register_output( p, VERT_RESULT_COL0 );
+
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL1)
+		     res1 = register_output( p, VERT_RESULT_COL1 );
+	       }
+	       else {
+		  mask1 = WRITEMASK_XYZ;
+
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+		     res1 = register_output( p, VERT_RESULT_COL0 );
+	       }
+	    } 
+
+	    emit_op3(p, OPCODE_MAD, _col0, 0, swizzle1(lit,X), ambient, _col0);
+	    emit_op3(p, OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _col0);
+	    emit_op3(p, OPCODE_MAD, res1, mask1, swizzle1(lit,Z), specular, _col1);
+      
+	    release_temp(p, ambient);
+	    release_temp(p, diffuse);
+	    release_temp(p, specular);
+	 }
+
+	 /* Back face lighting:
+	  */
+	 if (twoside) {
+	    struct ureg ambient = get_lightprod(p, i, 1, STATE_AMBIENT);
+	    struct ureg diffuse = get_lightprod(p, i, 1, STATE_DIFFUSE);
+	    struct ureg specular = get_lightprod(p, i, 1, STATE_SPECULAR);
+	    struct ureg res0, res1;
+	    GLuint mask0, mask1;
+	       
+	    emit_op1(p, OPCODE_LIT, lit, 0, ureg_negate(swizzle(dots,X,Y,W,Z)));
+
+	    if (!is_undef(att)) 
+	       emit_op2(p, OPCODE_MUL, lit, 0, lit, att);
+
+	    mask0 = 0;
+	    mask1 = 0;
+	    res0 = _bfc0;
+	    res1 = _bfc1;
+
+	    if (count == nr_lights) {
+	       if (separate) {
+		  mask0 = WRITEMASK_XYZ;
+		  mask1 = WRITEMASK_XYZ;
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+		     res0 = register_output( p, VERT_RESULT_BFC0 );
+
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL1)
+		     res1 = register_output( p, VERT_RESULT_BFC1 );
+	       }
+	       else {
+		  mask1 = WRITEMASK_XYZ;
+
+		  if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+		     res1 = register_output( p, VERT_RESULT_BFC0 );
+	       }
+	    }
+
+	    emit_op3(p, OPCODE_MAD, _bfc0, 0, swizzle1(lit,X), ambient, _bfc0);
+	    emit_op3(p, OPCODE_MAD, res0, mask0, swizzle1(lit,Y), diffuse, _bfc0);
+	    emit_op3(p, OPCODE_MAD, res1, mask1, swizzle1(lit,Z), specular, _bfc1);
+
+	    release_temp(p, ambient);
+	    release_temp(p, diffuse);
+	    release_temp(p, specular);
+	 }
+
+	 release_temp(p, half);
+	 release_temp(p, VPpli);
+	 release_temp(p, att);
+      }
+   }
+
+   release_temps( p );
+}
+
+
+static void build_fog( struct tnl_program *p )
+{
+   struct ureg fog = register_output(p, VERT_RESULT_FOGC);
+   struct ureg input;
+   
+   if (p->state->fog_source_is_depth) {
+      input = swizzle1(get_eye_position(p), Z);
+   }
+   else {
+      input = swizzle1(register_input(p, VERT_ATTRIB_FOG), X);
+   }
+
+   if (p->state->fog_option &&
+       p->state->tnl_do_vertex_fog) {
+      struct ureg params = register_param1(p, STATE_FOG_PARAMS);
+      struct ureg tmp = get_temp(p);
+      struct ureg id = get_identity_param(p);
+
+      emit_op1(p, OPCODE_MOV, fog, 0, id);
+
+      switch (p->state->fog_option) {
+      case FOG_LINEAR: {
+	 emit_op1(p, OPCODE_ABS, tmp, 0, input); 
+	 emit_op2(p, OPCODE_SUB, tmp, 0, swizzle1(params,Z), tmp); 
+	 emit_op2(p, OPCODE_MUL, tmp, 0, tmp, swizzle1(params,W)); 
+	 emit_op2(p, OPCODE_MAX, tmp, 0, tmp, swizzle1(id,X)); /* saturate */
+	 emit_op2(p, OPCODE_MIN, fog, WRITEMASK_X, tmp, swizzle1(id,W));
+	 break;
+      }
+      case FOG_EXP:
+	 emit_op1(p, OPCODE_ABS, tmp, 0, input); 
+	 emit_op2(p, OPCODE_MUL, tmp, 0, tmp, swizzle1(params,X)); 
+	 emit_op2(p, OPCODE_POW, fog, WRITEMASK_X, 
+		  register_const1f(p, M_E), ureg_negate(tmp)); 
+	 break;
+      case FOG_EXP2:
+	 emit_op2(p, OPCODE_MUL, tmp, 0, input, swizzle1(params,X)); 
+	 emit_op2(p, OPCODE_MUL, tmp, 0, tmp, tmp); 
+	 emit_op2(p, OPCODE_POW, fog, WRITEMASK_X, 
+		  register_const1f(p, M_E), ureg_negate(tmp)); 
+	 break;
+      }
+      
+      release_temp(p, tmp);
+   }
+   else {
+      /* results = incoming fog coords (compute fog per-fragment later) 
+       *
+       * KW:  Is it really necessary to do anything in this case?
+       */
+      emit_op1(p, OPCODE_MOV, fog, 0, input);
+   }
+}
+ 
+static void build_reflect_texgen( struct tnl_program *p,
+				  struct ureg dest,
+				  GLuint writemask )
+{
+   struct ureg normal = get_eye_normal(p);
+   struct ureg eye_hat = get_eye_position_normalized(p);
+   struct ureg tmp = get_temp(p);
+
+   /* n.u */
+   emit_op2(p, OPCODE_DP3, tmp, 0, normal, eye_hat); 
+   /* 2n.u */
+   emit_op2(p, OPCODE_ADD, tmp, 0, tmp, tmp); 
+   /* (-2n.u)n + u */
+   emit_op3(p, OPCODE_MAD, dest, writemask, ureg_negate(tmp), normal, eye_hat);
+
+   release_temp(p, tmp);
+}
+
+static void build_sphere_texgen( struct tnl_program *p,
+				 struct ureg dest,
+				 GLuint writemask )
+{
+   struct ureg normal = get_eye_normal(p);
+   struct ureg eye_hat = get_eye_position_normalized(p);
+   struct ureg tmp = get_temp(p);
+   struct ureg half = register_scalar_const(p, .5);
+   struct ureg r = get_temp(p);
+   struct ureg inv_m = get_temp(p);
+   struct ureg id = get_identity_param(p);
+
+   /* Could share the above calculations, but it would be
+    * a fairly odd state for someone to set (both sphere and
+    * reflection active for different texture coordinate
+    * components.  Of course - if two texture units enable
+    * reflect and/or sphere, things start to tilt in favour
+    * of seperating this out:
+    */
+
+   /* n.u */
+   emit_op2(p, OPCODE_DP3, tmp, 0, normal, eye_hat); 
+   /* 2n.u */
+   emit_op2(p, OPCODE_ADD, tmp, 0, tmp, tmp); 
+   /* (-2n.u)n + u */
+   emit_op3(p, OPCODE_MAD, r, 0, ureg_negate(tmp), normal, eye_hat); 
+   /* r + 0,0,1 */
+   emit_op2(p, OPCODE_ADD, tmp, 0, r, swizzle(id,X,Y,W,Z)); 
+   /* rx^2 + ry^2 + (rz+1)^2 */
+   emit_op2(p, OPCODE_DP3, tmp, 0, tmp, tmp); 
+   /* 2/m */
+   emit_op1(p, OPCODE_RSQ, tmp, 0, tmp); 
+   /* 1/m */
+   emit_op2(p, OPCODE_MUL, inv_m, 0, tmp, half); 
+   /* r/m + 1/2 */
+   emit_op3(p, OPCODE_MAD, dest, writemask, r, inv_m, half); 
+	       
+   release_temp(p, tmp);
+   release_temp(p, r);
+   release_temp(p, inv_m);
+}
+
+
+static void build_texture_transform( struct tnl_program *p )
+{
+   GLuint i, j;
+
+   for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
+
+      if (!(p->state->fragprog_inputs_read & (FRAG_BIT_TEX0<<i)))
+	 continue;
+							     
+      if (p->state->unit[i].texgen_enabled || 
+	  p->state->unit[i].texmat_enabled) {
+	 
+	 GLuint texmat_enabled = p->state->unit[i].texmat_enabled;
+	 struct ureg out = register_output(p, VERT_RESULT_TEX0 + i);
+	 struct ureg out_texgen = undef;
+
+	 if (p->state->unit[i].texgen_enabled) {
+	    GLuint copy_mask = 0;
+	    GLuint sphere_mask = 0;
+	    GLuint reflect_mask = 0;
+	    GLuint normal_mask = 0;
+	    GLuint modes[4];
+	 
+	    if (texmat_enabled) 
+	       out_texgen = get_temp(p);
+	    else
+	       out_texgen = out;
+
+	    modes[0] = p->state->unit[i].texgen_mode0;
+	    modes[1] = p->state->unit[i].texgen_mode1;
+	    modes[2] = p->state->unit[i].texgen_mode2;
+	    modes[3] = p->state->unit[i].texgen_mode3;
+
+	    for (j = 0; j < 4; j++) {
+	       switch (modes[j]) {
+	       case TXG_OBJ_LINEAR: {
+		  struct ureg obj = register_input(p, VERT_ATTRIB_POS);
+		  struct ureg plane = 
+		     register_param3(p, STATE_TEXGEN, i,
+				     STATE_TEXGEN_OBJECT_S + j);
+
+		  emit_op2(p, OPCODE_DP4, out_texgen, WRITEMASK_X << j, 
+			   obj, plane );
+		  break;
+	       }
+	       case TXG_EYE_LINEAR: {
+		  struct ureg eye = get_eye_position(p);
+		  struct ureg plane = 
+		     register_param3(p, STATE_TEXGEN, i, 
+				     STATE_TEXGEN_EYE_S + j);
+
+		  emit_op2(p, OPCODE_DP4, out_texgen, WRITEMASK_X << j, 
+			   eye, plane );
+		  break;
+	       }
+	       case TXG_SPHERE_MAP: 
+		  sphere_mask |= WRITEMASK_X << j;
+		  break;
+	       case TXG_REFLECTION_MAP:
+		  reflect_mask |= WRITEMASK_X << j;
+		  break;
+	       case TXG_NORMAL_MAP: 
+		  normal_mask |= WRITEMASK_X << j;
+		  break;
+	       case TXG_NONE:
+		  copy_mask |= WRITEMASK_X << j;
+	       }
+
+	    }
+
+	 
+	    if (sphere_mask) {
+	       build_sphere_texgen(p, out_texgen, sphere_mask);
+	    }
+
+	    if (reflect_mask) {
+	       build_reflect_texgen(p, out_texgen, reflect_mask);
+	    }
+
+	    if (normal_mask) {
+	       struct ureg normal = get_eye_normal(p);
+	       emit_op1(p, OPCODE_MOV, out_texgen, normal_mask, normal );
+	    }
+
+	    if (copy_mask) {
+	       struct ureg in = register_input(p, VERT_ATTRIB_TEX0+i);
+	       emit_op1(p, OPCODE_MOV, out_texgen, copy_mask, in );
+	    }
+	 }
+
+	 if (texmat_enabled) {
+	    struct ureg texmat[4];
+	    struct ureg in = (!is_undef(out_texgen) ? 
+			      out_texgen : 
+			      register_input(p, VERT_ATTRIB_TEX0+i));
+	    if (PREFER_DP4) {
+	       register_matrix_param6( p, STATE_MATRIX, STATE_TEXTURE, i, 
+				       0, 3, STATE_MATRIX, texmat );
+	       emit_matrix_transform_vec4( p, out, texmat, in );
+	    }
+	    else {
+	       register_matrix_param6( p, STATE_MATRIX, STATE_TEXTURE, i, 
+				       0, 3, STATE_MATRIX_TRANSPOSE, texmat );
+	       emit_transpose_matrix_transform_vec4( p, out, texmat, in );
+	    }
+	 }
+
+	 release_temps(p);
+      } 
+      else {
+	 emit_passthrough(p, VERT_ATTRIB_TEX0+i, VERT_RESULT_TEX0+i);
+      }
+   }
+}
+
+
+/* Seems like it could be tighter:
+ */
+static void build_pointsize( struct tnl_program *p )
+{
+   struct ureg eye = get_eye_position(p);
+   struct ureg state_size = register_param1(p, STATE_POINT_SIZE);
+   struct ureg state_attenuation = register_param1(p, STATE_POINT_ATTENUATION);
+   struct ureg out = register_output(p, VERT_RESULT_PSIZ);
+   struct ureg ut = get_temp(p);
+
+   /* 1, -Z, Z * Z, 1 */      
+   emit_op1(p, OPCODE_MOV, ut, 0, swizzle1(get_identity_param(p), W));
+   emit_op2(p, OPCODE_MUL, ut, WRITEMASK_YZ, ut, ureg_negate(swizzle1(eye, Z)));
+   emit_op2(p, OPCODE_MUL, ut, WRITEMASK_Z, ut, ureg_negate(swizzle1(eye, Z)));
+
+
+   /* p1 +  p2 * dist + p3 * dist * dist, 0 */
+   emit_op2(p, OPCODE_DP3, ut, 0, ut, state_attenuation);
+
+   /* 1 / factor */
+   emit_op1(p, OPCODE_RCP, ut, 0, ut ); 
+
+   /* out = pointSize / factor */
+   emit_op2(p, OPCODE_MUL, out, WRITEMASK_X, ut, state_size); 
+
+   release_temp(p, ut);
+}
+
+static void build_tnl_program( struct tnl_program *p )
+{  
+   /* Emit the program, starting with modelviewproject:
+    */
+   build_hpos(p);
+
+   /* Lighting calculations:
+    */
+   if (p->state->fragprog_inputs_read & (FRAG_BIT_COL0|FRAG_BIT_COL1)) {
+      if (p->state->light_global_enabled)
+	 build_lighting(p);
+      else {
+	 if (p->state->fragprog_inputs_read & FRAG_BIT_COL0)
+	    emit_passthrough(p, VERT_ATTRIB_COLOR0, VERT_RESULT_COL0);
+
+	 if (p->state->fragprog_inputs_read & FRAG_BIT_COL1)
+	    emit_passthrough(p, VERT_ATTRIB_COLOR1, VERT_RESULT_COL1);
+      }
+   }
+
+   if ((p->state->fragprog_inputs_read & FRAG_BIT_FOGC) ||
+       p->state->fog_option != FOG_NONE)
+      build_fog(p);
+
+   if (p->state->fragprog_inputs_read & FRAG_BITS_TEX_ANY)
+      build_texture_transform(p);
+
+   if (p->state->point_attenuated)
+      build_pointsize(p);
+
+   /* Finish up:
+    */
+   emit_op1(p, OPCODE_END, undef, 0, undef);
+
+   /* Disassemble:
+    */
+   if (DISASSEM) {
+      _mesa_printf ("\n");
+   }
+}
+
+
+static void build_new_tnl_program( const struct state_key *key,
+				   struct gl_vertex_program *program,
+				   GLuint max_temps)
+{
+   struct tnl_program p;
+
+   _mesa_memset(&p, 0, sizeof(p));
+   p.state = key;
+   p.program = program;
+   p.eye_position = undef;
+   p.eye_position_normalized = undef;
+   p.eye_normal = undef;
+   p.identity = undef;
+   p.temp_in_use = 0;
+   
+   if (max_temps >= sizeof(int) * 8)
+      p.temp_reserved = 0;
+   else
+      p.temp_reserved = ~((1<<max_temps)-1);
+
+   p.program->Base.Instructions = MALLOC(sizeof(struct prog_instruction) * BRW_TNL_MAX_INSN);
+   p.program->Base.String = 0;
+   p.program->Base.NumInstructions =
+   p.program->Base.NumTemporaries =
+   p.program->Base.NumParameters =
+   p.program->Base.NumAttributes = p.program->Base.NumAddressRegs = 0;
+   p.program->Base.Parameters = _mesa_new_parameter_list();
+   p.program->Base.InputsRead = 0;
+   p.program->Base.OutputsWritten = 0;
+
+   build_tnl_program( &p );
+}
+
+static void *search_cache( struct brw_tnl_cache *cache,
+			   GLuint hash,
+			   const void *key,
+			   GLuint keysize)
+{
+   struct brw_tnl_cache_item *c;
+
+   for (c = cache->items[hash % cache->size]; c; c = c->next) {
+      if (c->hash == hash && memcmp(c->key, key, keysize) == 0)
+	 return c->data;
+   }
+
+   return NULL;
+}
+
+static void rehash( struct brw_tnl_cache *cache )
+{
+   struct brw_tnl_cache_item **items;
+   struct brw_tnl_cache_item *c, *next;
+   GLuint size, i;
+
+   size = cache->size * 3;
+   items = (struct brw_tnl_cache_item**) _mesa_malloc(size * sizeof(*items));
+   _mesa_memset(items, 0, size * sizeof(*items));
+
+   for (i = 0; i < cache->size; i++)
+      for (c = cache->items[i]; c; c = next) {
+	 next = c->next;
+	 c->next = items[c->hash % size];
+	 items[c->hash % size] = c;
+      }
+
+   FREE(cache->items);
+   cache->items = items;
+   cache->size = size;
+}
+
+static void cache_item( struct brw_tnl_cache *cache,
+			GLuint hash,
+			const struct state_key *key,
+			void *data )
+{
+   struct brw_tnl_cache_item *c = MALLOC(sizeof(*c));
+   c->hash = hash;
+
+   c->key = malloc(sizeof(*key));
+   memcpy(c->key, key, sizeof(*key));
+
+   c->data = data;
+
+   if (++cache->n_items > cache->size * 1.5)
+      rehash(cache);
+
+   c->next = cache->items[hash % cache->size];
+   cache->items[hash % cache->size] = c;
+}
+
+
+static GLuint hash_key( struct state_key *key )
+{
+   GLuint *ikey = (GLuint *)key;
+   GLuint hash = 0, i;
+
+   /* I'm sure this can be improved on, but speed is important:
+    */
+   for (i = 0; i < sizeof(*key)/sizeof(GLuint); i++)
+      hash += ikey[i];
+
+   return hash;
+}
+
+static void update_tnl_program( struct brw_context *brw )
+{
+   GLcontext *ctx = &brw->intel.ctx;
+   struct state_key key;
+   GLuint hash;
+   struct gl_vertex_program *old = brw->tnl_program;
+
+   /* _NEW_PROGRAM */
+   if (brw->attribs.VertexProgram->_Enabled) 
+      return;
+      
+   /* Grab all the relevent state and put it in a single structure:
+    */
+   make_state_key(ctx, &key);
+   hash = hash_key(&key);
+
+   /* Look for an already-prepared program for this state:
+    */
+   brw->tnl_program = (struct gl_vertex_program *)
+      search_cache( &brw->tnl_program_cache, hash, &key, sizeof(key) );
+   
+   /* OK, we'll have to build a new one:
+    */
+   if (!brw->tnl_program) {
+      brw->tnl_program = (struct gl_vertex_program *)
+	 ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 0); 
+
+      build_new_tnl_program( &key, brw->tnl_program, 
+/* 			     ctx->Const.MaxVertexProgramTemps  */
+			     32
+	 );
+
+      if (ctx->Driver.ProgramStringNotify)
+	 ctx->Driver.ProgramStringNotify( ctx, GL_VERTEX_PROGRAM_ARB, 
+					  &brw->tnl_program->Base );
+
+      cache_item( &brw->tnl_program_cache, 
+		  hash, &key, brw->tnl_program );
+   }
+
+   if (old != brw->tnl_program)
+      brw->state.dirty.brw |= BRW_NEW_TNL_PROGRAM;
+}
+
+/* Note: See brw_draw.c - the vertex program must not rely on
+ * brw->primitive or brw->reduced_prim.
+ */
+const struct brw_tracked_state brw_tnl_vertprog = {
+   .dirty = {
+      .mesa = (_NEW_PROGRAM | 
+	       _NEW_LIGHT | 
+	       _NEW_TRANSFORM | 
+	       _NEW_FOG | 
+	       _NEW_HINT | 
+	       _NEW_POINT | 
+	       _NEW_TEXTURE),
+      .brw = (BRW_NEW_FRAGMENT_PROGRAM | 
+	      BRW_NEW_INPUT_VARYING),
+      .cache = 0
+   },
+   .update = update_tnl_program
+};
+
+
+
+
+static void update_active_vertprog( struct brw_context *brw )
+{
+   struct gl_vertex_program *prev = brw->vertex_program;
+
+   /* NEW_PROGRAM */
+   if (brw->attribs.VertexProgram->_Enabled) {
+      brw->vertex_program = brw->attribs.VertexProgram->Current;
+   }
+   else {
+      /* BRW_NEW_TNL_PROGRAM */
+      brw->vertex_program = brw->tnl_program;
+   }
+
+   if (brw->vertex_program != prev) 
+      brw->state.dirty.brw |= BRW_NEW_VERTEX_PROGRAM;
+}
+
+
+
+const struct brw_tracked_state brw_active_vertprog = {
+   .dirty = {
+      .mesa = _NEW_PROGRAM,
+      .brw = BRW_NEW_TNL_PROGRAM,
+      .cache = 0
+   },
+   .update = update_active_vertprog
+};
+
+
+void brw_ProgramCacheInit( GLcontext *ctx )
+{
+   struct brw_context *brw = brw_context(ctx);
+
+   brw->tnl_program_cache.size = 17;
+   brw->tnl_program_cache.n_items = 0;
+   brw->tnl_program_cache.items = (struct brw_tnl_cache_item **)
+      _mesa_calloc(brw->tnl_program_cache.size * 
+		   sizeof(struct brw_tnl_cache_item));
+}
+
+void brw_ProgramCacheDestroy( GLcontext *ctx )
+{
+   struct brw_context *brw = brw_context(ctx);
+   struct brw_tnl_cache_item *c, *next;
+   GLuint i;
+
+   for (i = 0; i < brw->tnl_program_cache.size; i++)
+      for (c = brw->tnl_program_cache.items[i]; c; c = next) {
+	 next = c->next;
+	 FREE(c->key);
+	 FREE(c->data);
+	 FREE(c);
+      }
+
+   FREE(brw->tnl_program_cache.items);
+}