fix some bugs with handling of GL_DOT4_ATI, GL_DOT3_ATI and GL_DOT2_ADD_ATI ATI_fs...

diff --git a/src/mesa/swrast/s_atifragshader.c b/src/mesa/swrast/s_atifragshader.c
index c3d9af8..4b53ff6 100644 (file)
--- a/src/mesa/swrast/s_atifragshader.c
+++ b/src/mesa/swrast/s_atifragshader.c
@@ -98,7 +98,7 @@ apply_src_rep(GLint optype, GLuint rep, GLfloat * val)
       return;
 
    start = optype ? 3 : 0;
-   end = optype ? 4 : 3;
+   end = 4;
 
    for (i = start; i < end; i++) {
       switch (rep) {
@@ -128,7 +128,7 @@ apply_src_mod(GLint optype, GLuint mod, GLfloat * val)
       return;
 
    start = optype ? 3 : 0;
-   end = optype ? 4 : 3;
+   end = 4;
 
    for (i = start; i < end; i++) {
       if (mod & GL_COMP_BIT_ATI)
@@ -474,6 +474,7 @@ execute_shader(GLcontext * ctx,
                     GLfloat result;
 
                     /* DOT 2 always uses the source from the color op */
+                    /* could save recalculation of dot products for alpha inst */
                     result = src[0][0][0] * src[0][1][0] +
                        src[0][0][1] * src[0][1][1] + src[0][2][2];
                     if (!optype) {
@@ -483,7 +484,6 @@ execute_shader(GLcontext * ctx,
                     }
                     else
                        dst[optype][3] = result;
-
                  }
                  break;
               case GL_DOT3_ATI:
@@ -509,7 +509,7 @@ execute_shader(GLcontext * ctx,
                     GLfloat result;
 
                     /* DOT 4 always uses the source from the color op */
-                    result = src[optype][0][0] * src[0][1][0] +
+                    result = src[0][0][0] * src[0][1][0] +
                        src[0][0][1] * src[0][1][1] +
                        src[0][0][2] * src[0][1][2] +
                        src[0][0][3] * src[0][1][3];
@@ -533,9 +533,13 @@ execute_shader(GLcontext * ctx,
               dstreg = inst->DstReg[optype].Index;
               dstp = machine->Registers[dstreg - GL_REG_0_ATI];
 
-              write_dst_addr(optype, inst->DstReg[optype].dstMod,
+              if ((optype == 0) || ((inst->Opcode[1] != GL_DOT2_ADD_ATI) &&
+                 (inst->Opcode[1] != GL_DOT3_ATI) && (inst->Opcode[1] != GL_DOT4_ATI)))
+                 write_dst_addr(optype, inst->DstReg[optype].dstMod,
                              inst->DstReg[optype].dstMask, dst[optype],
                              dstp);
+              else
+                 write_dst_addr(1, inst->DstReg[0].dstMod, 0, dst[1], dstp);
            }
         }
       }