mesa: move atifragshader.[ch] to main/

1 files changed, 794 insertions, 0 deletions

diff --git a/src/mesa/main/atifragshader.c b/src/mesa/main/atifragshader.c
new file mode 100644
index 00000000000..550f50b7a00
--- /dev/null
+++ b/src/mesa/main/atifragshader.c
@@ -0,0 +1,794 @@
+/**
+ * \file atifragshader.c
+ * \author David Airlie
+ * Copyright (C) 2004  David Airlie   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
+ * DAVID AIRLIE 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.
+ */
+
+#include "main/glheader.h"
+#include "main/context.h"
+#include "main/hash.h"
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/enums.h"
+#include "main/mtypes.h"
+#include "main/dispatch.h"
+#include "main/atifragshader.h"
+
+#if FEATURE_ATI_fragment_shader
+
+#define MESA_DEBUG_ATI_FS 0
+
+static struct ati_fragment_shader DummyShader;
+
+
+void
+_mesa_init_ati_fragment_shader_dispatch(struct _glapi_table *disp)
+{
+   SET_GenFragmentShadersATI(disp, _mesa_GenFragmentShadersATI);
+   SET_BindFragmentShaderATI(disp, _mesa_BindFragmentShaderATI);
+   SET_DeleteFragmentShaderATI(disp, _mesa_DeleteFragmentShaderATI);
+   SET_BeginFragmentShaderATI(disp, _mesa_BeginFragmentShaderATI);
+   SET_EndFragmentShaderATI(disp, _mesa_EndFragmentShaderATI);
+   SET_PassTexCoordATI(disp, _mesa_PassTexCoordATI);
+   SET_SampleMapATI(disp, _mesa_SampleMapATI);
+   SET_ColorFragmentOp1ATI(disp, _mesa_ColorFragmentOp1ATI);
+   SET_ColorFragmentOp2ATI(disp, _mesa_ColorFragmentOp2ATI);
+   SET_ColorFragmentOp3ATI(disp, _mesa_ColorFragmentOp3ATI);
+   SET_AlphaFragmentOp1ATI(disp, _mesa_AlphaFragmentOp1ATI);
+   SET_AlphaFragmentOp2ATI(disp, _mesa_AlphaFragmentOp2ATI);
+   SET_AlphaFragmentOp3ATI(disp, _mesa_AlphaFragmentOp3ATI);
+   SET_SetFragmentShaderConstantATI(disp, _mesa_SetFragmentShaderConstantATI);
+}
+
+
+/**
+ * Allocate and initialize a new ATI fragment shader object.
+ */
+struct ati_fragment_shader *
+_mesa_new_ati_fragment_shader(GLcontext *ctx, GLuint id)
+{
+   struct ati_fragment_shader *s = CALLOC_STRUCT(ati_fragment_shader);
+   (void) ctx;
+   if (s) {
+      s->Id = id;
+      s->RefCount = 1;
+   }
+   return s;
+}
+
+
+/**
+ * Delete the given ati fragment shader
+ */
+void
+_mesa_delete_ati_fragment_shader(GLcontext *ctx, struct ati_fragment_shader *s)
+{
+   GLuint i;
+   for (i = 0; i < MAX_NUM_PASSES_ATI; i++) {
+      if (s->Instructions[i])
+         free(s->Instructions[i]);
+      if (s->SetupInst[i])
+         free(s->SetupInst[i]);
+   }
+   free(s);
+}
+
+
+
+static void
+new_arith_inst(struct ati_fragment_shader *prog)
+{
+/* set "default" instruction as not all may get defined.
+   there is no specified way to express a nop with ati fragment shaders we use
+   GL_NONE as the op enum and just set some params to 0 - so nothing to do here */
+   prog->numArithInstr[prog->cur_pass >> 1]++;
+}
+
+static void
+new_tex_inst(struct ati_fragment_shader *prog)
+{
+}
+
+static void match_pair_inst(struct ati_fragment_shader *curProg, GLuint optype)
+{
+   if (optype == curProg->last_optype) {
+      curProg->last_optype = 1;
+   }
+}
+
+#if MESA_DEBUG_ATI_FS
+static char *
+create_dst_mod_str(GLuint mod)
+{
+   static char ret_str[1024];
+
+   memset(ret_str, 0, 1024);
+   if (mod & GL_2X_BIT_ATI)
+      strncat(ret_str, "|2X", 1024);
+
+   if (mod & GL_4X_BIT_ATI)
+      strncat(ret_str, "|4X", 1024);
+
+   if (mod & GL_8X_BIT_ATI)
+      strncat(ret_str, "|8X", 1024);
+   if (mod & GL_HALF_BIT_ATI)
+      strncat(ret_str, "|HA", 1024);
+   if (mod & GL_QUARTER_BIT_ATI)
+      strncat(ret_str, "|QU", 1024);
+   if (mod & GL_EIGHTH_BIT_ATI)
+      strncat(ret_str, "|EI", 1024);
+
+   if (mod & GL_SATURATE_BIT_ATI)
+      strncat(ret_str, "|SAT", 1024);
+
+   if (strlen(ret_str) == 0)
+      strncat(ret_str, "NONE", 1024);
+   return ret_str;
+}
+
+static char *atifs_ops[] = {"ColorFragmentOp1ATI", "ColorFragmentOp2ATI", "ColorFragmentOp3ATI", 
+			    "AlphaFragmentOp1ATI", "AlphaFragmentOp2ATI", "AlphaFragmentOp3ATI" };
+
+static void debug_op(GLint optype, GLuint arg_count, GLenum op, GLuint dst,
+		     GLuint dstMask, GLuint dstMod, GLuint arg1,
+		     GLuint arg1Rep, GLuint arg1Mod, GLuint arg2,
+		     GLuint arg2Rep, GLuint arg2Mod, GLuint arg3,
+		     GLuint arg3Rep, GLuint arg3Mod)
+{
+  char *op_name;
+
+  op_name = atifs_ops[(arg_count-1)+(optype?3:0)];
+  
+  fprintf(stderr, "%s(%s, %s", op_name, _mesa_lookup_enum_by_nr(op),
+	      _mesa_lookup_enum_by_nr(dst));
+  if (!optype)
+    fprintf(stderr, ", %d", dstMask);
+  
+  fprintf(stderr, ", %s", create_dst_mod_str(dstMod));
+  
+  fprintf(stderr, ", %s, %s, %d", _mesa_lookup_enum_by_nr(arg1),
+	      _mesa_lookup_enum_by_nr(arg1Rep), arg1Mod);
+  if (arg_count>1)
+    fprintf(stderr, ", %s, %s, %d", _mesa_lookup_enum_by_nr(arg2),
+	      _mesa_lookup_enum_by_nr(arg2Rep), arg2Mod);
+  if (arg_count>2)
+    fprintf(stderr, ", %s, %s, %d", _mesa_lookup_enum_by_nr(arg3),
+	      _mesa_lookup_enum_by_nr(arg3Rep), arg3Mod);
+
+  fprintf(stderr,")\n");
+
+}
+#endif
+
+static int check_arith_arg(struct ati_fragment_shader *curProg,
+			GLuint optype, GLuint arg, GLuint argRep)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (((arg < GL_CON_0_ATI) || (arg > GL_CON_7_ATI)) &&
+      ((arg < GL_REG_0_ATI) || (arg > GL_REG_5_ATI)) &&
+      (arg != GL_ZERO) && (arg != GL_ONE) &&
+      (arg != GL_PRIMARY_COLOR_ARB) && (arg != GL_SECONDARY_INTERPOLATOR_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "C/AFragmentOpATI(arg)");
+      return 0;
+   }
+   if ((arg == GL_SECONDARY_INTERPOLATOR_ATI) && (((optype == 0) && (argRep == GL_ALPHA)) ||
+      ((optype == 1) && ((arg == GL_ALPHA) || (argRep == GL_NONE))))) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(sec_interp)");
+      return 0;
+   }
+   if ((arg == GL_SECONDARY_INTERPOLATOR_ATI) && (((optype == 0) && (argRep == GL_ALPHA)) ||
+      ((optype == 1) && ((arg == GL_ALPHA) || (argRep == GL_NONE))))) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(sec_interp)");
+      return 0;
+   }
+   if ((curProg->cur_pass == 1) &&
+      ((arg == GL_PRIMARY_COLOR_ARB) || (arg == GL_SECONDARY_INTERPOLATOR_ATI))) {
+      curProg->interpinp1 = GL_TRUE;
+   }
+   return 1;
+}
+
+GLuint GLAPIENTRY
+_mesa_GenFragmentShadersATI(GLuint range)
+{
+   GLuint first;
+   GLuint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (range == 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glGenFragmentShadersATI(range)");
+      return 0;
+   }
+
+   if (ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glGenFragmentShadersATI(insideShader)");
+      return 0;
+   }
+
+   first = _mesa_HashFindFreeKeyBlock(ctx->Shared->ATIShaders, range);
+   for (i = 0; i < range; i++) {
+      _mesa_HashInsert(ctx->Shared->ATIShaders, first + i, &DummyShader);
+   }
+
+   return first;
+}
+
+void GLAPIENTRY
+_mesa_BindFragmentShaderATI(GLuint id)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+   struct ati_fragment_shader *newProg;
+
+   if (ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glBindFragmentShaderATI(insideShader)");
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+
+   if (curProg->Id == id) {
+      return;
+   }
+
+   /* unbind current */
+   if (curProg->Id != 0) {
+      curProg->RefCount--;
+      if (curProg->RefCount <= 0) {
+	 _mesa_HashRemove(ctx->Shared->ATIShaders, id);
+      }
+   }
+
+   /* find new shader */
+   if (id == 0) {
+      newProg = ctx->Shared->DefaultFragmentShader;
+   }
+   else {
+      newProg = (struct ati_fragment_shader *)
+         _mesa_HashLookup(ctx->Shared->ATIShaders, id);
+      if (!newProg || newProg == &DummyShader) {
+	 /* allocate a new program now */
+	 newProg = _mesa_new_ati_fragment_shader(ctx, id);
+	 if (!newProg) {
+	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindFragmentShaderATI");
+	    return;
+	 }
+	 _mesa_HashInsert(ctx->Shared->ATIShaders, id, newProg);
+      }
+
+   }
+
+   /* do actual bind */
+   ctx->ATIFragmentShader.Current = newProg;
+
+   ASSERT(ctx->ATIFragmentShader.Current);
+   if (newProg)
+      newProg->RefCount++;
+
+   /*if (ctx->Driver.BindProgram)
+      ctx->Driver.BindProgram(ctx, target, prog); */
+}
+
+void GLAPIENTRY
+_mesa_DeleteFragmentShaderATI(GLuint id)
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glDeleteFragmentShaderATI(insideShader)");
+      return;
+   }
+
+   if (id != 0) {
+      struct ati_fragment_shader *prog = (struct ati_fragment_shader *)
+	 _mesa_HashLookup(ctx->Shared->ATIShaders, id);
+      if (prog == &DummyShader) {
+	 _mesa_HashRemove(ctx->Shared->ATIShaders, id);
+      }
+      else if (prog) {
+	 if (ctx->ATIFragmentShader.Current &&
+	     ctx->ATIFragmentShader.Current->Id == id) {
+	     FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+	    _mesa_BindFragmentShaderATI(0);
+	 }
+      }
+
+      /* The ID is immediately available for re-use now */
+      _mesa_HashRemove(ctx->Shared->ATIShaders, id);
+      if (prog) {
+	 prog->RefCount--;
+	 if (prog->RefCount <= 0) {
+	    free(prog);
+	 }
+      }
+   }
+}
+
+
+void GLAPIENTRY
+_mesa_BeginFragmentShaderATI(void)
+{
+   GLint i;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glBeginFragmentShaderATI(insideShader)");
+      return;
+   }
+
+   FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+
+   /* if the shader was already defined free instructions and get new ones
+      (or, could use the same mem but would need to reinitialize) */
+   /* no idea if it's allowed to redefine a shader */
+   for (i = 0; i < MAX_NUM_PASSES_ATI; i++) {
+         if (ctx->ATIFragmentShader.Current->Instructions[i])
+            free(ctx->ATIFragmentShader.Current->Instructions[i]);
+         if (ctx->ATIFragmentShader.Current->SetupInst[i])
+            free(ctx->ATIFragmentShader.Current->SetupInst[i]);
+   }
+
+   /* malloc the instructions here - not sure if the best place but its
+      a start */
+   for (i = 0; i < MAX_NUM_PASSES_ATI; i++) {
+      ctx->ATIFragmentShader.Current->Instructions[i] =
+	 (struct atifs_instruction *)
+	 calloc(1, sizeof(struct atifs_instruction) *
+		   (MAX_NUM_INSTRUCTIONS_PER_PASS_ATI));
+      ctx->ATIFragmentShader.Current->SetupInst[i] =
+	 (struct atifs_setupinst *)
+	 calloc(1, sizeof(struct atifs_setupinst) *
+		   (MAX_NUM_FRAGMENT_REGISTERS_ATI));
+   }
+
+/* can't rely on calloc for initialization as it's possible to redefine a shader (?) */
+   ctx->ATIFragmentShader.Current->LocalConstDef = 0;
+   ctx->ATIFragmentShader.Current->numArithInstr[0] = 0;
+   ctx->ATIFragmentShader.Current->numArithInstr[1] = 0;
+   ctx->ATIFragmentShader.Current->regsAssigned[0] = 0;
+   ctx->ATIFragmentShader.Current->regsAssigned[1] = 0;
+   ctx->ATIFragmentShader.Current->NumPasses = 0;
+   ctx->ATIFragmentShader.Current->cur_pass = 0;
+   ctx->ATIFragmentShader.Current->last_optype = 0;
+   ctx->ATIFragmentShader.Current->interpinp1 = GL_FALSE;
+   ctx->ATIFragmentShader.Current->isValid = GL_FALSE;
+   ctx->ATIFragmentShader.Current->swizzlerq = 0;
+   ctx->ATIFragmentShader.Compiling = 1;
+}
+
+void GLAPIENTRY
+_mesa_EndFragmentShaderATI(void)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+#if MESA_DEBUG_ATI_FS
+   GLint i, j;
+#endif
+
+   if (!ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glEndFragmentShaderATI(outsideShader)");
+      return;
+   }
+   if (curProg->interpinp1 && (ctx->ATIFragmentShader.Current->cur_pass > 1)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glEndFragmentShaderATI(interpinfirstpass)");
+   /* according to spec, DON'T return here */
+   }
+
+   match_pair_inst(curProg, 0);
+   ctx->ATIFragmentShader.Compiling = 0;
+   ctx->ATIFragmentShader.Current->isValid = GL_TRUE;
+   if ((ctx->ATIFragmentShader.Current->cur_pass == 0) ||
+      (ctx->ATIFragmentShader.Current->cur_pass == 2)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glEndFragmentShaderATI(noarithinst)");
+   }
+   if (ctx->ATIFragmentShader.Current->cur_pass > 1)
+      ctx->ATIFragmentShader.Current->NumPasses = 2;
+   else
+      ctx->ATIFragmentShader.Current->NumPasses = 1;
+
+   ctx->ATIFragmentShader.Current->cur_pass = 0;
+
+#if MESA_DEBUG_ATI_FS
+   for (j = 0; j < MAX_NUM_PASSES_ATI; j++) {
+      for (i = 0; i < MAX_NUM_FRAGMENT_REGISTERS_ATI; i++) {
+	 GLuint op = curProg->SetupInst[j][i].Opcode;
+	 const char *op_enum = op > 5 ? _mesa_lookup_enum_by_nr(op) : "0";
+	 GLuint src = curProg->SetupInst[j][i].src;
+	 GLuint swizzle = curProg->SetupInst[j][i].swizzle;
+	 fprintf(stderr, "%2d %04X %s %d %04X\n", i, op, op_enum, src,
+	      swizzle);
+      }
+      for (i = 0; i < curProg->numArithInstr[j]; i++) {
+	 GLuint op0 = curProg->Instructions[j][i].Opcode[0];
+	 GLuint op1 = curProg->Instructions[j][i].Opcode[1];
+	 const char *op0_enum = op0 > 5 ? _mesa_lookup_enum_by_nr(op0) : "0";
+	 const char *op1_enum = op1 > 5 ? _mesa_lookup_enum_by_nr(op1) : "0";
+	 GLuint count0 = curProg->Instructions[j][i].ArgCount[0];
+	 GLuint count1 = curProg->Instructions[j][i].ArgCount[1];
+	 fprintf(stderr, "%2d %04X %s %d %04X %s %d\n", i, op0, op0_enum, count0,
+	      op1, op1_enum, count1);
+      }
+   }
+#endif
+
+   if (!ctx->Driver.ProgramStringNotify(ctx, GL_FRAGMENT_SHADER_ATI, NULL)) {
+      ctx->ATIFragmentShader.Current->isValid = GL_FALSE;
+      /* XXX is this the right error? */
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glEndFragmentShaderATI(driver rejected shader)");
+   }
+}
+
+void GLAPIENTRY
+_mesa_PassTexCoordATI(GLuint dst, GLuint coord, GLenum swizzle)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+   struct atifs_setupinst *curI;
+
+   if (!ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glPassTexCoordATI(outsideShader)");
+      return;
+   }
+
+   if (curProg->cur_pass == 1) {
+      match_pair_inst(curProg, 0);
+      curProg->cur_pass = 2;
+   }
+   if ((curProg->cur_pass > 2) ||
+      ((1 << (dst - GL_REG_0_ATI)) & curProg->regsAssigned[curProg->cur_pass >> 1])) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glPassTexCoord(pass)");
+      return;
+   }
+   if ((dst < GL_REG_0_ATI) || (dst > GL_REG_5_ATI) ||
+      ((dst - GL_REG_0_ATI) >= ctx->Const.MaxTextureUnits)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPassTexCoordATI(dst)");
+      return;
+   }
+   if (((coord < GL_REG_0_ATI) || (coord > GL_REG_5_ATI)) &&
+       ((coord < GL_TEXTURE0_ARB) || (coord > GL_TEXTURE7_ARB) ||
+       ((coord - GL_TEXTURE0_ARB) >= ctx->Const.MaxTextureUnits))) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPassTexCoordATI(coord)");
+      return;
+   }
+   if ((curProg->cur_pass == 0) && (coord >= GL_REG_0_ATI)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glPassTexCoordATI(coord)");
+      return;
+   }
+   if (!(swizzle >= GL_SWIZZLE_STR_ATI) && (swizzle <= GL_SWIZZLE_STQ_DQ_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glPassTexCoordATI(swizzle)");
+      return;
+   }
+   if ((swizzle & 1) && (coord >= GL_REG_0_ATI)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glPassTexCoordATI(swizzle)");
+      return;
+   }
+   if (coord <= GL_TEXTURE7_ARB) {
+      GLuint tmp = coord - GL_TEXTURE0_ARB;
+      if ((((curProg->swizzlerq >> (tmp * 2)) & 3) != 0) &&
+	   (((swizzle & 1) + 1) != ((curProg->swizzlerq >> (tmp * 2)) & 3))) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION, "glPassTexCoordATI(swizzle)");
+	 return;
+      } else {
+	 curProg->swizzlerq |= (((swizzle & 1) + 1) << (tmp * 2));
+      }
+   }
+
+   curProg->regsAssigned[curProg->cur_pass >> 1] |=  1 << (dst - GL_REG_0_ATI);
+   new_tex_inst(curProg);
+
+   /* add the instructions */
+   curI = &curProg->SetupInst[curProg->cur_pass >> 1][dst - GL_REG_0_ATI];
+
+   curI->Opcode = ATI_FRAGMENT_SHADER_PASS_OP;
+   curI->src = coord;
+   curI->swizzle = swizzle;
+
+#if MESA_DEBUG_ATI_FS
+   _mesa_debug(ctx, "%s(%s, %s, %s)\n", __FUNCTION__,
+	       _mesa_lookup_enum_by_nr(dst), _mesa_lookup_enum_by_nr(coord),
+	       _mesa_lookup_enum_by_nr(swizzle));
+#endif
+}
+
+void GLAPIENTRY
+_mesa_SampleMapATI(GLuint dst, GLuint interp, GLenum swizzle)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+   struct atifs_setupinst *curI;
+
+   if (!ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMapATI(outsideShader)");
+      return;
+   }
+
+   if (curProg->cur_pass == 1) {
+      match_pair_inst(curProg, 0);
+      curProg->cur_pass = 2;
+   }
+   if ((curProg->cur_pass > 2) ||
+      ((1 << (dst - GL_REG_0_ATI)) & curProg->regsAssigned[curProg->cur_pass >> 1])) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMapATI(pass)");
+      return;
+   }
+   if ((dst < GL_REG_0_ATI) || (dst > GL_REG_5_ATI) ||
+      ((dst - GL_REG_0_ATI) >= ctx->Const.MaxTextureUnits)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSampleMapATI(dst)");
+      return;
+   }
+   if (((interp < GL_REG_0_ATI) || (interp > GL_REG_5_ATI)) &&
+       ((interp < GL_TEXTURE0_ARB) || (interp > GL_TEXTURE7_ARB) ||
+       ((interp - GL_TEXTURE0_ARB) >= ctx->Const.MaxTextureUnits))) {
+   /* is this texture5 or texture7? spec is a bit unclear there */
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSampleMapATI(interp)");
+      return;
+   }
+   if ((curProg->cur_pass == 0) && (interp >= GL_REG_0_ATI)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMapATI(interp)");
+      return;
+   }
+   if (!(swizzle >= GL_SWIZZLE_STR_ATI) && (swizzle <= GL_SWIZZLE_STQ_DQ_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSampleMapATI(swizzle)");
+      return;
+   }
+   if ((swizzle & 1) && (interp >= GL_REG_0_ATI)) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMapATI(swizzle)");
+      return;
+   }
+   if (interp <= GL_TEXTURE7_ARB) {
+      GLuint tmp = interp - GL_TEXTURE0_ARB;
+      if ((((curProg->swizzlerq >> (tmp * 2)) & 3) != 0) &&
+	   (((swizzle & 1) + 1) != ((curProg->swizzlerq >> (tmp * 2)) & 3))) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION, "glSampleMapATI(swizzle)");
+	 return;
+      } else {
+	 curProg->swizzlerq |= (((swizzle & 1) + 1) << (tmp * 2));
+      }
+   }
+
+   curProg->regsAssigned[curProg->cur_pass >> 1] |=  1 << (dst - GL_REG_0_ATI);
+   new_tex_inst(curProg);
+
+   /* add the instructions */
+   curI = &curProg->SetupInst[curProg->cur_pass >> 1][dst - GL_REG_0_ATI];
+
+   curI->Opcode = ATI_FRAGMENT_SHADER_SAMPLE_OP;
+   curI->src = interp;
+   curI->swizzle = swizzle;
+
+#if MESA_DEBUG_ATI_FS
+   _mesa_debug(ctx, "%s(%s, %s, %s)\n", __FUNCTION__,
+	       _mesa_lookup_enum_by_nr(dst), _mesa_lookup_enum_by_nr(interp),
+	       _mesa_lookup_enum_by_nr(swizzle));
+#endif
+}
+
+static void
+_mesa_FragmentOpXATI(GLint optype, GLuint arg_count, GLenum op, GLuint dst,
+		     GLuint dstMask, GLuint dstMod, GLuint arg1,
+		     GLuint arg1Rep, GLuint arg1Mod, GLuint arg2,
+		     GLuint arg2Rep, GLuint arg2Mod, GLuint arg3,
+		     GLuint arg3Rep, GLuint arg3Mod)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+   GLint ci;
+   struct atifs_instruction *curI;
+   GLuint modtemp = dstMod & ~GL_SATURATE_BIT_ATI;
+
+   if (!ctx->ATIFragmentShader.Compiling) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(outsideShader)");
+      return;
+   }
+
+   if (curProg->cur_pass==0)
+      curProg->cur_pass=1;
+
+   else if (curProg->cur_pass==2)
+      curProg->cur_pass=3;
+
+   /* decide whether this is a new instruction or not ... all color instructions are new,
+      and alpha instructions might also be new if there was no preceding color inst */
+   if ((optype == 0) || (curProg->last_optype == optype)) {
+      if (curProg->numArithInstr[curProg->cur_pass >> 1] > 7) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(instrCount)");
+	 return;
+      }
+      /* easier to do that here slight side effect invalid instr will still be inserted as nops */
+      match_pair_inst(curProg, optype);
+      new_arith_inst(curProg);
+   }
+   curProg->last_optype = optype;
+   ci = curProg->numArithInstr[curProg->cur_pass >> 1] - 1;
+
+   /* add the instructions */
+   curI = &curProg->Instructions[curProg->cur_pass >> 1][ci];
+
+   /* error checking */
+   if ((dst < GL_REG_0_ATI) || (dst > GL_REG_5_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "C/AFragmentOpATI(dst)");
+      return;
+   }
+   if ((modtemp != GL_NONE) && (modtemp != GL_2X_BIT_ATI) &&
+      (modtemp != GL_4X_BIT_ATI) && (modtemp != GL_8X_BIT_ATI) &&
+      (modtemp != GL_HALF_BIT_ATI) && !(modtemp != GL_QUARTER_BIT_ATI) &&
+      (modtemp != GL_EIGHTH_BIT_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "C/AFragmentOpATI(dstMod)%x", modtemp);
+      return;
+   }
+   /* op checking? Actually looks like that's missing in the spec but we'll do it anyway */
+   if (((op < GL_ADD_ATI) || (op > GL_DOT2_ADD_ATI)) && !(op == GL_MOV_ATI)) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "C/AFragmentOpATI(op)");
+      return;
+   }
+   if (optype == 1) {
+      if (((op == GL_DOT2_ADD_ATI) && (curI->Opcode[0] != GL_DOT2_ADD_ATI)) ||
+	 ((op == GL_DOT3_ATI) && (curI->Opcode[0] != GL_DOT3_ATI)) ||
+	 ((op == GL_DOT4_ATI) && (curI->Opcode[0] != GL_DOT4_ATI)) ||
+	 ((op != GL_DOT4_ATI) && (curI->Opcode[0] == GL_DOT4_ATI))) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION, "AFragmentOpATI(op)");
+	 return;
+      }
+   }
+   if ((op == GL_DOT4_ATI) &&
+      (((arg1 == GL_SECONDARY_INTERPOLATOR_ATI) && ((arg1Rep == GL_ALPHA) || (arg1Rep == GL_NONE))) ||
+      (((arg2 == GL_SECONDARY_INTERPOLATOR_ATI) && ((arg2Rep == GL_ALPHA) || (arg2Rep == GL_NONE)))))) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(sec_interp)");
+   }
+
+   if (!check_arith_arg(curProg, optype, arg1, arg1Rep)) {
+      return;
+   }
+   if (arg2) {
+      if (!check_arith_arg(curProg, optype, arg2, arg2Rep)) {
+	 return;
+      }
+   }
+   if (arg3) {
+      if (!check_arith_arg(curProg, optype, arg3, arg3Rep)) {
+	 return;
+      }
+      if ((arg1 >= GL_CON_0_ATI) && (arg1 <= GL_CON_7_ATI) &&
+	  (arg2 >= GL_CON_0_ATI) && (arg2 <= GL_CON_7_ATI) &&
+	  (arg3 >= GL_CON_0_ATI) && (arg3 <= GL_CON_7_ATI) &&
+	  (arg1 != arg2) && (arg1 != arg3) && (arg2 != arg3)) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION, "C/AFragmentOpATI(3Consts)");
+	 return;
+      }
+   }
+
+   /* all ok - not all fully validated though (e.g. argNMod - spec doesn't say anything) */
+
+   curI->Opcode[optype] = op;
+   curI->SrcReg[optype][0].Index = arg1;
+   curI->SrcReg[optype][0].argRep = arg1Rep;
+   curI->SrcReg[optype][0].argMod = arg1Mod;
+   curI->ArgCount[optype] = arg_count;
+
+   if (arg2) {
+      curI->SrcReg[optype][1].Index = arg2;
+      curI->SrcReg[optype][1].argRep = arg2Rep;
+      curI->SrcReg[optype][1].argMod = arg2Mod;
+   }
+
+   if (arg3) {
+      curI->SrcReg[optype][2].Index = arg3;
+      curI->SrcReg[optype][2].argRep = arg3Rep;
+      curI->SrcReg[optype][2].argMod = arg3Mod;
+   }
+
+   curI->DstReg[optype].Index = dst;
+   curI->DstReg[optype].dstMod = dstMod;
+   curI->DstReg[optype].dstMask = dstMask;
+
+#if MESA_DEBUG_ATI_FS
+   debug_op(optype, arg_count, op, dst, dstMask, dstMod, arg1, arg1Rep, arg1Mod, arg2, arg2Rep, arg2Mod, arg3, arg3Rep, arg3Mod);
+#endif
+
+}
+
+void GLAPIENTRY
+_mesa_ColorFragmentOp1ATI(GLenum op, GLuint dst, GLuint dstMask,
+			  GLuint dstMod, GLuint arg1, GLuint arg1Rep,
+			  GLuint arg1Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_COLOR_OP, 1, op, dst, dstMask,
+			dstMod, arg1, arg1Rep, arg1Mod, 0, 0, 0, 0, 0, 0);
+}
+
+void GLAPIENTRY
+_mesa_ColorFragmentOp2ATI(GLenum op, GLuint dst, GLuint dstMask,
+			  GLuint dstMod, GLuint arg1, GLuint arg1Rep,
+			  GLuint arg1Mod, GLuint arg2, GLuint arg2Rep,
+			  GLuint arg2Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_COLOR_OP, 2, op, dst, dstMask,
+			dstMod, arg1, arg1Rep, arg1Mod, arg2, arg2Rep,
+			arg2Mod, 0, 0, 0);
+}
+
+void GLAPIENTRY
+_mesa_ColorFragmentOp3ATI(GLenum op, GLuint dst, GLuint dstMask,
+			  GLuint dstMod, GLuint arg1, GLuint arg1Rep,
+			  GLuint arg1Mod, GLuint arg2, GLuint arg2Rep,
+			  GLuint arg2Mod, GLuint arg3, GLuint arg3Rep,
+			  GLuint arg3Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_COLOR_OP, 3, op, dst, dstMask,
+			dstMod, arg1, arg1Rep, arg1Mod, arg2, arg2Rep,
+			arg2Mod, arg3, arg3Rep, arg3Mod);
+}
+
+void GLAPIENTRY
+_mesa_AlphaFragmentOp1ATI(GLenum op, GLuint dst, GLuint dstMod, GLuint arg1,
+			  GLuint arg1Rep, GLuint arg1Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_ALPHA_OP, 1, op, dst, 0, dstMod,
+			arg1, arg1Rep, arg1Mod, 0, 0, 0, 0, 0, 0);
+}
+
+void GLAPIENTRY
+_mesa_AlphaFragmentOp2ATI(GLenum op, GLuint dst, GLuint dstMod, GLuint arg1,
+			  GLuint arg1Rep, GLuint arg1Mod, GLuint arg2,
+			  GLuint arg2Rep, GLuint arg2Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_ALPHA_OP, 2, op, dst, 0, dstMod,
+			arg1, arg1Rep, arg1Mod, arg2, arg2Rep, arg2Mod, 0, 0,
+			0);
+}
+
+void GLAPIENTRY
+_mesa_AlphaFragmentOp3ATI(GLenum op, GLuint dst, GLuint dstMod, GLuint arg1,
+			  GLuint arg1Rep, GLuint arg1Mod, GLuint arg2,
+			  GLuint arg2Rep, GLuint arg2Mod, GLuint arg3,
+			  GLuint arg3Rep, GLuint arg3Mod)
+{
+   _mesa_FragmentOpXATI(ATI_FRAGMENT_SHADER_ALPHA_OP, 3, op, dst, 0, dstMod,
+			arg1, arg1Rep, arg1Mod, arg2, arg2Rep, arg2Mod, arg3,
+			arg3Rep, arg3Mod);
+}
+
+void GLAPIENTRY
+_mesa_SetFragmentShaderConstantATI(GLuint dst, const GLfloat * value)
+{
+   GLuint dstindex;
+   GET_CURRENT_CONTEXT(ctx);
+
+   if ((dst < GL_CON_0_ATI) || (dst > GL_CON_7_ATI)) {
+      /* spec says nothing about what should happen here but we can't just segfault...*/
+      _mesa_error(ctx, GL_INVALID_ENUM, "glSetFragmentShaderConstantATI(dst)");
+      return;
+   }
+
+   dstindex = dst - GL_CON_0_ATI;
+   if (ctx->ATIFragmentShader.Compiling) {
+      struct ati_fragment_shader *curProg = ctx->ATIFragmentShader.Current;
+      COPY_4V(curProg->Constants[dstindex], value);
+      curProg->LocalConstDef |= 1 << dstindex;
+   }
+   else {
+      FLUSH_VERTICES(ctx, _NEW_PROGRAM);
+      COPY_4V(ctx->ATIFragmentShader.GlobalConstants[dstindex], value);
+   }
+}
+
+#endif /* FEATURE_ATI_fragment_shader */