r300/compiler: restore r500-specific bits of TEX transformations

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c
index 655e84b4cb8dc44353038366e24b89be5d20eb06..967fd74b0037c820bdd00f44303eb294a3121682 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_tex.c
@@ -41,6 +41,33 @@ static struct rc_src_register shadow_ambient(struct radeon_compiler * c, int tmu
        return reg;
 }
 
+static void lower_texture_rect(struct r300_fragment_program_compiler *compiler,
+                                                          struct rc_instruction *inst)
+{
+       struct rc_instruction *inst_rect;
+       unsigned temp = rc_find_free_temporary(&compiler->Base);
+
+       if (inst->U.I.TexSrcTarget == RC_TEXTURE_RECT ||
+               compiler->state.unit[inst->U.I.TexSrcUnit].non_normalized_coords) {
+               inst_rect = rc_insert_new_instruction(&compiler->Base, inst->Prev);
+
+               inst_rect->U.I.Opcode = RC_OPCODE_MUL;
+               inst_rect->U.I.DstReg.File = RC_FILE_TEMPORARY;
+               inst_rect->U.I.DstReg.Index = temp;
+               inst_rect->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
+               inst_rect->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
+               inst_rect->U.I.SrcReg[1].Index =
+                               rc_constants_add_state(&compiler->Base.Program.Constants,
+                                                                          RC_STATE_R300_TEXRECT_FACTOR, inst->U.I.TexSrcUnit);
+
+               reset_srcreg(&inst->U.I.SrcReg[0]);
+               inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
+               inst->U.I.SrcReg[0].Index = temp;
+
+               inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
+       }
+}
+
 /**
  * Transform TEX, TXP, TXB, and KIL instructions in the following ways:
  *  - implement texture compare (shadow extensions)
@@ -176,32 +203,21 @@ int radeonTransformTEX(
                        compiler->state.unit[inst->U.I.TexSrcUnit].fake_npot ||
                        compiler->state.unit[inst->U.I.TexSrcUnit].non_normalized_coords)) {
                rc_wrap_mode wrapmode = compiler->state.unit[inst->U.I.TexSrcUnit].wrap_mode;
-               struct rc_instruction *inst_rect = NULL;
-               unsigned temp = rc_find_free_temporary(c);
-
-               if (inst->U.I.TexSrcTarget == RC_TEXTURE_RECT ||
-                       compiler->state.unit[inst->U.I.TexSrcUnit].non_normalized_coords) {
-                       inst_rect = rc_insert_new_instruction(c, inst->Prev);
-
-                       inst_rect->U.I.Opcode = RC_OPCODE_MUL;
-                       inst_rect->U.I.DstReg.File = RC_FILE_TEMPORARY;
-                       inst_rect->U.I.DstReg.Index = temp;
-                       inst_rect->U.I.SrcReg[0] = inst->U.I.SrcReg[0];
-                       inst_rect->U.I.SrcReg[1].File = RC_FILE_CONSTANT;
-                       inst_rect->U.I.SrcReg[1].Index =
-                               rc_constants_add_state(&c->Program.Constants,
-                                       RC_STATE_R300_TEXRECT_FACTOR, inst->U.I.TexSrcUnit);
 
-                       reset_srcreg(&inst->U.I.SrcReg[0]);
-                       inst->U.I.SrcReg[0].File = RC_FILE_TEMPORARY;
-                       inst->U.I.SrcReg[0].Index = temp;
-
-                       inst->U.I.TexSrcTarget = RC_TEXTURE_2D;
+               /* R300 cannot sample from rectangles. */
+               if (!compiler->is_r500) {
+                       lower_texture_rect(compiler, inst);
                }
 
                if (compiler->state.unit[inst->U.I.TexSrcUnit].fake_npot &&
                        wrapmode != RC_WRAP_NONE) {
                        struct rc_instruction *inst_mov;
+                       unsigned temp = rc_find_free_temporary(c);
+
+                       /* For NPOT fallback, we need normalized coordinates anyway. */
+                       if (compiler->is_r500) {
+                               lower_texture_rect(compiler, inst);
+                       }
 
                        if (wrapmode == RC_WRAP_REPEAT) {
                                /* Both instructions will be paired up. */
@@ -222,7 +238,7 @@ int radeonTransformTEX(
                                 * ADD temp0, temp0, temp0
                                 */
 
-                               inst_rect = rc_insert_new_instruction(c, inst->Prev);
+                               struct rc_instruction *inst_rect = rc_insert_new_instruction(c, inst->Prev);
 
                                inst_rect->U.I.Opcode = RC_OPCODE_MUL;
                                inst_rect->U.I.DstReg.File = RC_FILE_TEMPORARY;
@@ -286,9 +302,10 @@ int radeonTransformTEX(
                }
        }
 
-       /* Cannot write texture to output registers or with masks */
+       /* Cannot write texture to output registers (all chips) or with masks (non-r500) */
        if (inst->U.I.Opcode != RC_OPCODE_KIL &&
-               (inst->U.I.DstReg.File != RC_FILE_TEMPORARY || inst->U.I.DstReg.WriteMask != RC_MASK_XYZW)) {
+               (inst->U.I.DstReg.File != RC_FILE_TEMPORARY ||
+                (!compiler->is_r500 && inst->U.I.DstReg.WriteMask != RC_MASK_XYZW))) {
                struct rc_instruction * inst_mov = rc_insert_new_instruction(c, inst);
 
                inst_mov->U.I.Opcode = RC_OPCODE_MOV;