X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fshader%2Fprogramopt.c;h=e283f8933b21df76f3f8f6042fa660d75df7098b;hb=3d4246e22e90ffef5fe0cd935bd54c7f862e82f7;hp=fed8e5b758be357fd36dad1e1f2072480e30e7d4;hpb=fd1b1fce3faaf40af201a5b06a84df62c855fb12;p=mesa.git

diff --git a/src/mesa/shader/programopt.c b/src/mesa/shader/programopt.c
index fed8e5b758b..e283f8933b2 100644
--- a/src/mesa/shader/programopt.c
+++ b/src/mesa/shader/programopt.c
@@ -1,8 +1,8 @@
 /*
  * Mesa 3-D graphics library
- * Version:  6.5.2
+ * Version:  6.5.3
  *
- * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2007  Brian Paul   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"),
@@ -31,13 +31,13 @@
  */
 
 
-#include "glheader.h"
-#include "context.h"
-#include "imports.h"
-#include "mtypes.h"
+#include "main/glheader.h"
+#include "main/context.h"
+#include "prog_parameter.h"
+#include "prog_statevars.h"
 #include "program.h"
 #include "programopt.h"
-#include "program_instruction.h"
+#include "prog_instruction.h"
 
 
 /**
@@ -57,11 +57,11 @@ _mesa_insert_mvp_code(GLcontext *ctx, struct gl_vertex_program *vprog)
     * Setup state references for the modelview/projection matrix.
     * XXX we should check if these state vars are already declared.
     */
-   static const GLint mvpState[4][5] = {
-      { STATE_MATRIX, STATE_MVP, 0, 0, 0 },  /* state.matrix.mvp.row[0] */
-      { STATE_MATRIX, STATE_MVP, 0, 1, 1 },  /* state.matrix.mvp.row[1] */
-      { STATE_MATRIX, STATE_MVP, 0, 2, 2 },  /* state.matrix.mvp.row[2] */
-      { STATE_MATRIX, STATE_MVP, 0, 3, 3 },  /* state.matrix.mvp.row[3] */
+   static const gl_state_index mvpState[4][STATE_LENGTH] = {
+      { STATE_MVP_MATRIX, 0, 0, 0, 0 },  /* state.matrix.mvp.row[0] */
+      { STATE_MVP_MATRIX, 0, 1, 1, 0 },  /* state.matrix.mvp.row[1] */
+      { STATE_MVP_MATRIX, 0, 2, 2, 0 },  /* state.matrix.mvp.row[2] */
+      { STATE_MVP_MATRIX, 0, 3, 3, 0 },  /* state.matrix.mvp.row[3] */
    };
    GLint mvpRef[4];
 
@@ -103,7 +103,7 @@ _mesa_insert_mvp_code(GLcontext *ctx, struct gl_vertex_program *vprog)
    _mesa_copy_instructions (newInst + 4, vprog->Base.Instructions, origLen);
 
    /* free old instructions */
-   _mesa_free(vprog->Base.Instructions);
+   _mesa_free_instructions(vprog->Base.Instructions, origLen);
 
    /* install new instructions */
    vprog->Base.Instructions = newInst;
@@ -125,9 +125,10 @@ _mesa_insert_mvp_code(GLcontext *ctx, struct gl_vertex_program *vprog)
 void
 _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
 {
-   static const GLint fogPStateOpt[] = { STATE_INTERNAL,
-					 STATE_FOG_PARAMS_OPTIMIZED, 0, 0, 0 };
-   static const GLint fogColorState[] = { STATE_FOG_COLOR, 0, 0, 0, 0 };
+   static const gl_state_index fogPStateOpt[STATE_LENGTH]
+      = { STATE_INTERNAL, STATE_FOG_PARAMS_OPTIMIZED, 0, 0, 0 };
+   static const gl_state_index fogColorState[STATE_LENGTH]
+      = { STATE_FOG_COLOR, 0, 0, 0, 0};
    struct prog_instruction *newInst, *inst;
    const GLuint origLen = fprog->Base.NumInstructions;
    const GLuint newLen = origLen + 5;
@@ -150,8 +151,7 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
    }
 
    /* Copy orig instructions into new instruction buffer */
-   _mesa_memcpy(newInst, fprog->Base.Instructions,
-                origLen * sizeof(struct prog_instruction));
+   _mesa_copy_instructions(newInst, fprog->Base.Instructions, origLen);
 
    /* PARAM fogParamsRefOpt = internal optimized fog params; */
    fogPRefOpt
@@ -171,7 +171,7 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
       if (inst->Opcode == OPCODE_END)
          break;
       if (inst->DstReg.File == PROGRAM_OUTPUT &&
-          inst->DstReg.Index == FRAG_RESULT_COLR) {
+          inst->DstReg.Index == FRAG_RESULT_COLOR) {
          /* change the instruction to write to colorTemp w/ clamping */
          inst->DstReg.File = PROGRAM_TEMPORARY;
          inst->DstReg.Index = colorTemp;
@@ -193,13 +193,14 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
       inst->DstReg.WriteMask = WRITEMASK_X;
       inst->SrcReg[0].File = PROGRAM_INPUT;
       inst->SrcReg[0].Index = FRAG_ATTRIB_FOGC;
-      inst->SrcReg[0].Swizzle = SWIZZLE_X;
+      inst->SrcReg[0].Swizzle = SWIZZLE_XXXX;
       inst->SrcReg[1].File = PROGRAM_STATE_VAR;
       inst->SrcReg[1].Index = fogPRefOpt;
-      inst->SrcReg[1].Swizzle = SWIZZLE_X;
+      inst->SrcReg[1].Swizzle = SWIZZLE_XXXX;
       inst->SrcReg[2].File = PROGRAM_STATE_VAR;
       inst->SrcReg[2].Index = fogPRefOpt;
-      inst->SrcReg[2].Swizzle = SWIZZLE_Y;
+      inst->SrcReg[2].Swizzle = SWIZZLE_YYYY;
+      inst->SaturateMode = SATURATE_ZERO_ONE;
       inst++;
    }
    else {
@@ -214,10 +215,10 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
       inst->SrcReg[0].File = PROGRAM_STATE_VAR;
       inst->SrcReg[0].Index = fogPRefOpt;
       inst->SrcReg[0].Swizzle
-         = (fprog->FogOption == GL_EXP) ? SWIZZLE_Z : SWIZZLE_W;
+         = (fprog->FogOption == GL_EXP) ? SWIZZLE_ZZZZ : SWIZZLE_WWWW;
       inst->SrcReg[1].File = PROGRAM_INPUT;
       inst->SrcReg[1].Index = FRAG_ATTRIB_FOGC;
-      inst->SrcReg[1].Swizzle = SWIZZLE_X;
+      inst->SrcReg[1].Swizzle = SWIZZLE_XXXX;
       inst++;
       if (fprog->FogOption == GL_EXP2) {
          /* MUL fogFactorTemp.x, fogFactorTemp.x, fogFactorTemp.x; */
@@ -227,10 +228,10 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
          inst->DstReg.WriteMask = WRITEMASK_X;
          inst->SrcReg[0].File = PROGRAM_TEMPORARY;
          inst->SrcReg[0].Index = fogFactorTemp;
-         inst->SrcReg[0].Swizzle = SWIZZLE_X;
+         inst->SrcReg[0].Swizzle = SWIZZLE_XXXX;
          inst->SrcReg[1].File = PROGRAM_TEMPORARY;
          inst->SrcReg[1].Index = fogFactorTemp;
-         inst->SrcReg[1].Swizzle = SWIZZLE_X;
+         inst->SrcReg[1].Swizzle = SWIZZLE_XXXX;
          inst++;
       }
       /* EX2_SAT fogFactorTemp.x, -fogFactorTemp.x; */
@@ -240,20 +241,19 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
       inst->DstReg.WriteMask = WRITEMASK_X;
       inst->SrcReg[0].File = PROGRAM_TEMPORARY;
       inst->SrcReg[0].Index = fogFactorTemp;
-      inst->SrcReg[0].NegateBase = GL_TRUE;
-      inst->SrcReg[0].Swizzle = SWIZZLE_X;
+      inst->SrcReg[0].NegateBase = NEGATE_XYZW;
+      inst->SrcReg[0].Swizzle = SWIZZLE_XXXX;
       inst->SaturateMode = SATURATE_ZERO_ONE;
       inst++;
    }
    /* LRP result.color.xyz, fogFactorTemp.xxxx, colorTemp, fogColorRef; */
    inst->Opcode = OPCODE_LRP;
    inst->DstReg.File = PROGRAM_OUTPUT;
-   inst->DstReg.Index = FRAG_RESULT_COLR;
+   inst->DstReg.Index = FRAG_RESULT_COLOR;
    inst->DstReg.WriteMask = WRITEMASK_XYZ;
    inst->SrcReg[0].File = PROGRAM_TEMPORARY;
    inst->SrcReg[0].Index = fogFactorTemp;
-   inst->SrcReg[0].Swizzle
-      = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_X, SWIZZLE_X, SWIZZLE_X);
+   inst->SrcReg[0].Swizzle = SWIZZLE_XXXX;
    inst->SrcReg[1].File = PROGRAM_TEMPORARY;
    inst->SrcReg[1].Index = colorTemp;
    inst->SrcReg[1].Swizzle = SWIZZLE_NOOP;
@@ -264,7 +264,7 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
    /* MOV result.color.w, colorTemp.x;  # copy alpha */
    inst->Opcode = OPCODE_MOV;
    inst->DstReg.File = PROGRAM_OUTPUT;
-   inst->DstReg.Index = FRAG_RESULT_COLR;
+   inst->DstReg.Index = FRAG_RESULT_COLOR;
    inst->DstReg.WriteMask = WRITEMASK_W;
    inst->SrcReg[0].File = PROGRAM_TEMPORARY;
    inst->SrcReg[0].Index = colorTemp;
@@ -275,7 +275,7 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
    inst++;
 
    /* free old instructions */
-   _mesa_free(fprog->Base.Instructions);
+   _mesa_free_instructions(fprog->Base.Instructions, origLen);
 
    /* install new instructions */
    fprog->Base.Instructions = newInst;
@@ -283,3 +283,178 @@ _mesa_append_fog_code(GLcontext *ctx, struct gl_fragment_program *fprog)
    fprog->Base.InputsRead |= FRAG_BIT_FOGC;
    /* XXX do this?  fprog->FogOption = GL_NONE; */
 }
+
+
+
+static GLboolean
+is_texture_instruction(const struct prog_instruction *inst)
+{
+   switch (inst->Opcode) {
+   case OPCODE_TEX:
+   case OPCODE_TXB:
+   case OPCODE_TXD:
+   case OPCODE_TXL:
+   case OPCODE_TXP:
+   case OPCODE_TXP_NV:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+      
+
+/**
+ * Count the number of texure indirections in the given program.
+ * The program's NumTexIndirections field will be updated.
+ * See the GL_ARB_fragment_program spec (issue 24) for details.
+ * XXX we count texture indirections in texenvprogram.c (maybe use this code
+ * instead and elsewhere).
+ */
+void
+_mesa_count_texture_indirections(struct gl_program *prog)
+{
+   GLuint indirections = 1;
+   GLbitfield tempsOutput = 0x0;
+   GLbitfield aluTemps = 0x0;
+   GLuint i;
+
+   for (i = 0; i < prog->NumInstructions; i++) {
+      const struct prog_instruction *inst = prog->Instructions + i;
+
+      if (is_texture_instruction(inst)) {
+         if (((inst->SrcReg[0].File == PROGRAM_TEMPORARY) && 
+              (tempsOutput & (1 << inst->SrcReg[0].Index))) ||
+             ((inst->Opcode != OPCODE_KIL) &&
+              (inst->DstReg.File == PROGRAM_TEMPORARY) && 
+              (aluTemps & (1 << inst->DstReg.Index)))) 
+            {
+               indirections++;
+               tempsOutput = 0x0;
+               aluTemps = 0x0;
+            }
+      }
+      else {
+         GLuint j;
+         for (j = 0; j < 3; j++) {
+            if (inst->SrcReg[j].File == PROGRAM_TEMPORARY)
+               aluTemps |= (1 << inst->SrcReg[j].Index);
+         }
+         if (inst->DstReg.File == PROGRAM_TEMPORARY)
+            aluTemps |= (1 << inst->DstReg.Index);
+      }
+
+      if ((inst->Opcode != OPCODE_KIL) && (inst->DstReg.File == PROGRAM_TEMPORARY))
+         tempsOutput |= (1 << inst->DstReg.Index);
+   }
+
+   prog->NumTexIndirections = indirections;
+}
+
+
+/**
+ * Count number of texture instructions in given program and update the
+ * program's NumTexInstructions field.
+ */
+void
+_mesa_count_texture_instructions(struct gl_program *prog)
+{
+   GLuint i;
+   prog->NumTexInstructions = 0;
+   for (i = 0; i < prog->NumInstructions; i++) {
+      prog->NumTexInstructions += is_texture_instruction(prog->Instructions + i);
+   }
+}
+
+
+/**
+ * Scan/rewrite program to remove reads of custom (output) registers.
+ * The passed type has to be either PROGRAM_OUTPUT or PROGRAM_VARYING
+ * (for vertex shaders).
+ * In GLSL shaders, varying vars can be read and written.
+ * On some hardware, trying to read an output register causes trouble.
+ * So, rewrite the program to use a temporary register in this case.
+ */
+void
+_mesa_remove_output_reads(struct gl_program *prog, gl_register_file type)
+{
+   GLuint i;
+   GLint outputMap[VERT_RESULT_MAX];
+   GLuint numVaryingReads = 0;
+
+   assert(type == PROGRAM_VARYING || type == PROGRAM_OUTPUT);
+   assert(prog->Target == GL_VERTEX_PROGRAM_ARB || type != PROGRAM_VARYING);
+
+   for (i = 0; i < VERT_RESULT_MAX; i++)
+      outputMap[i] = -1;
+
+   /* look for instructions which read from varying vars */
+   for (i = 0; i < prog->NumInstructions; i++) {
+      struct prog_instruction *inst = prog->Instructions + i;
+      const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
+      GLuint j;
+      for (j = 0; j < numSrc; j++) {
+         if (inst->SrcReg[j].File == type) {
+            /* replace the read with a temp reg */
+            const GLuint var = inst->SrcReg[j].Index;
+            if (outputMap[var] == -1) {
+               numVaryingReads++;
+               outputMap[var] = _mesa_find_free_register(prog,
+                                                         PROGRAM_TEMPORARY);
+            }
+            inst->SrcReg[j].File = PROGRAM_TEMPORARY;
+            inst->SrcReg[j].Index = outputMap[var];
+         }
+      }
+   }
+
+   if (numVaryingReads == 0)
+      return; /* nothing to be done */
+
+   /* look for instructions which write to the varying vars identified above */
+   for (i = 0; i < prog->NumInstructions; i++) {
+      struct prog_instruction *inst = prog->Instructions + i;
+      const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
+      GLuint j;
+      for (j = 0; j < numSrc; j++) {
+         if (inst->DstReg.File == type &&
+             outputMap[inst->DstReg.Index] >= 0) {
+            /* change inst to write to the temp reg, instead of the varying */
+            inst->DstReg.File = PROGRAM_TEMPORARY;
+            inst->DstReg.Index = outputMap[inst->DstReg.Index];
+         }
+      }
+   }
+
+   /* insert new instructions to copy the temp vars to the varying vars */
+   {
+      struct prog_instruction *inst;
+      GLint endPos, var;
+
+      /* Look for END instruction and insert the new varying writes */
+      endPos = -1;
+      for (i = 0; i < prog->NumInstructions; i++) {
+         struct prog_instruction *inst = prog->Instructions + i;
+         if (inst->Opcode == OPCODE_END) {
+            endPos = i;
+            _mesa_insert_instructions(prog, i, numVaryingReads);
+            break;
+         }
+      }
+
+      assert(endPos >= 0);
+
+      /* insert new MOV instructions here */
+      inst = prog->Instructions + endPos;
+      for (var = 0; var < VERT_RESULT_MAX; var++) {
+         if (outputMap[var] >= 0) {
+            /* MOV VAR[var], TEMP[tmp]; */
+            inst->Opcode = OPCODE_MOV;
+            inst->DstReg.File = type;
+            inst->DstReg.Index = var;
+            inst->SrcReg[0].File = PROGRAM_TEMPORARY;
+            inst->SrcReg[0].Index = outputMap[var];
+            inst++;
+         }
+      }
+   }
+}