add error checking to the GL_ATI_FRAGMENT_SHADER entrypoints. Fix bug with scope of ati fragment shader constants. Fix issues with specifying color/alpha instructions not pair-wise. Change internal representation of the shader (to better fit how the extension works, should make driver implementations simpler, and saves some memory). (still doesn't work correctly with doom3 and swrast, but not worse than before)

1 files changed, 31 insertions, 35 deletions

diff --git a/src/mesa/swrast/s_atifragshader.c b/src/mesa/swrast/s_atifragshader.c
index d137b17d210..aeadefc8caa 100644
--- a/src/mesa/swrast/s_atifragshader.c
+++ b/src/mesa/swrast/s_atifragshader.c
@@ -258,18 +258,12 @@ struct ati_fs_opcode_st ati_fs_opcodes[] = {
 
 
 static void
-handle_pass_op(struct atifs_machine *machine, struct atifs_instruction *inst,
-	       const struct sw_span *span, GLuint column)
+handle_pass_op(struct atifs_machine *machine, struct atifs_setupinst *texinst,
+	       const struct sw_span *span, GLuint column, GLuint idx)
 {
-   GLuint idx = inst->DstReg[0].Index - GL_REG_0_ATI;
-   GLuint swizzle = inst->DstReg[0].Swizzle;
-   GLuint pass_tex = inst->SrcReg[0][0].Index;
-
-   /* if we get here after passing pass one then we are starting pass two - backup the registers */
-   if (machine->pass == 1) {
-      finish_pass(machine);
-      machine->pass = 2;
-   }
+   GLuint swizzle = texinst->swizzle;
+   GLuint pass_tex = texinst->src;
+
    if (pass_tex >= GL_TEXTURE0_ARB && pass_tex <= GL_TEXTURE7_ARB) {
       pass_tex -= GL_TEXTURE0_ARB;
       COPY_4V(machine->Registers[idx],
@@ -286,18 +280,11 @@ handle_pass_op(struct atifs_machine *machine, struct atifs_instruction *inst,
 
 static void
 handle_sample_op(GLcontext * ctx, struct atifs_machine *machine,
-		 struct atifs_instruction *inst, const struct sw_span *span,
-		 GLuint column)
+		 struct atifs_setupinst *texinst, const struct sw_span *span,
+		 GLuint column, GLuint idx)
 {
-   GLuint idx = inst->DstReg[0].Index - GL_REG_0_ATI;
-   GLuint swizzle = inst->DstReg[0].Swizzle;
-   GLuint sample_tex = inst->SrcReg[0][0].Index;
-
-   /* if we get here after passing pass one then we are starting pass two - backup the registers */
-   if (machine->pass == 1) {
-      finish_pass(machine);
-      machine->pass = 2;
-   }
+   GLuint swizzle = texinst->swizzle;
+   GLuint sample_tex = texinst->src;
 
    if (sample_tex >= GL_TEXTURE0_ARB && sample_tex <= GL_TEXTURE7_ARB) {
       sample_tex -= GL_TEXTURE0_ARB;
@@ -310,7 +297,6 @@ handle_sample_op(GLcontext * ctx, struct atifs_machine *machine,
       fetch_texel(ctx, machine->Registers[sample_tex], 0, sample_tex,
 		  machine->Registers[idx]);
    }
-
    apply_swizzle(machine, idx, swizzle);
 }
 
@@ -329,24 +315,28 @@ execute_shader(GLcontext * ctx,
 {
    GLuint pc;
    struct atifs_instruction *inst;
+   struct atifs_setupinst *texinst;
    GLint optype;
-   GLint i;
+   GLint i, j, pass;
    GLint dstreg;
    GLfloat src[2][3][4];
    GLfloat zeros[4] = { 0.0, 0.0, 0.0, 0.0 };
    GLfloat ones[4] = { 1.0, 1.0, 1.0, 1.0 };
    GLfloat dst[2][4], *dstp;
 
-   for (pc = 0; pc < shader->Base.NumInstructions; pc++) {
-      inst = &shader->Instructions[pc];
+   for (pass = 0; pass < shader->NumPasses; pass++) {
+      if (pass > 0)
+	 finish_pass(machine);
+      for (j = 0; j < MAX_NUM_FRAGMENT_REGISTERS_ATI; j++) {
+	 texinst = &shader->SetupInst[pass][j];
+	 if (texinst->Opcode == ATI_FRAGMENT_SHADER_PASS_OP)
+	    handle_pass_op(machine, texinst, span, column, j);
+	 else if (texinst->Opcode == ATI_FRAGMENT_SHADER_SAMPLE_OP)
+	    handle_sample_op(ctx, machine, texinst, span, column, j);
+      }
 
-      if (inst->Opcode[0] == ATI_FRAGMENT_SHADER_PASS_OP)
-	 handle_pass_op(machine, inst, span, column);
-      else if (inst->Opcode[0] == ATI_FRAGMENT_SHADER_SAMPLE_OP)
-	 handle_sample_op(ctx, machine, inst, span, column);
-      else {
-	 if (machine->pass == 0)
-	    machine->pass = 1;
+      for (pc = 0; pc < shader->numArithInstr[pass]; pc++) {
+	 inst = &shader->Instructions[pass][pc];
 
 	 /* setup the source registers for color and alpha ops */
 	 for (optype = 0; optype < 2; optype++) {
@@ -356,9 +346,15 @@ execute_shader(GLcontext * ctx,
 	       if (index >= GL_REG_0_ATI && index <= GL_REG_5_ATI)
 		  SETUP_SRC_REG(optype, i,
 				machine->Registers[index - GL_REG_0_ATI]);
-	       else if (index >= GL_CON_0_ATI && index <= GL_CON_7_ATI)
-		  SETUP_SRC_REG(optype, i,
+	       else if (index >= GL_CON_0_ATI && index <= GL_CON_7_ATI) {
+		  if (shader->localConstDef & (1 << (index - GL_CON_0_ATI))) {
+		     SETUP_SRC_REG(optype, i,
 				shader->Constants[index - GL_CON_0_ATI]);
+		  } else {
+		     SETUP_SRC_REG(optype, i,
+				ctx->ATIFragmentShader.globalConstants[index - GL_CON_0_ATI]);
+		  }
+	       }
 	       else if (index == GL_ONE)
 		  SETUP_SRC_REG(optype, i, ones);
 	       else if (index == GL_ZERO)