r300compiler, r300 classic, r300g: Add support for MRTs in the frag shader.

This maybe breaks the vert compiler. Hopefully not.

diff --git a/src/gallium/drivers/r300/r300_fs.c b/src/gallium/drivers/r300/r300_fs.c
index 60ea9c1..39bcdc8 100644 (file)
--- a/src/gallium/drivers/r300/r300_fs.c
+++ b/src/gallium/drivers/r300/r300_fs.c
@@ -77,17 +77,21 @@ void r300_shader_read_fs_inputs(struct tgsi_shader_info* info,
 static void find_output_registers(struct r300_fragment_program_compiler * compiler,
                                   struct r300_fragment_shader * fs)
 {
-    unsigned i;
+    unsigned i, colorbuf_count = 0;
 
     /* Mark the outputs as not present initially */
-    compiler->OutputColor = fs->info.num_outputs;
+    compiler->OutputColor[0] = fs->info.num_outputs;
+    compiler->OutputColor[1] = fs->info.num_outputs;
+    compiler->OutputColor[2] = fs->info.num_outputs;
+    compiler->OutputColor[3] = fs->info.num_outputs;
     compiler->OutputDepth = fs->info.num_outputs;
 
     /* Now see where they really are. */
     for(i = 0; i < fs->info.num_outputs; ++i) {
         switch(fs->info.output_semantic_name[i]) {
             case TGSI_SEMANTIC_COLOR:
-                compiler->OutputColor = i;
+                compiler->OutputColor[colorbuf_count] = i;
+                colorbuf_count++;
                 break;
             case TGSI_SEMANTIC_POSITION:
                 compiler->OutputDepth = i;

diff --git a/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c
index 375838d..cc552ae 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c
+++ b/src/mesa/drivers/dri/r300/compiler/r300_fragprog_emit.c
@@ -176,7 +176,9 @@ static int emit_alu(struct r300_emit_state * emit, struct rc_pair_instruction* i
                        (inst->RGB.WriteMask << R300_ALU_DSTC_REG_MASK_SHIFT);
        }
        if (inst->RGB.OutputWriteMask) {
-               code->alu.inst[ip].rgb_addr |= (inst->RGB.OutputWriteMask << R300_ALU_DSTC_OUTPUT_MASK_SHIFT);
+               code->alu.inst[ip].rgb_addr |=
+            (inst->RGB.OutputWriteMask << R300_ALU_DSTC_OUTPUT_MASK_SHIFT) |
+            R300_RGB_TARGET(inst->RGB.Target);
                emit->node_flags |= R300_RGBA_OUT;
        }
 
@@ -187,7 +189,8 @@ static int emit_alu(struct r300_emit_state * emit, struct rc_pair_instruction* i
                        R300_ALU_DSTA_REG;
        }
        if (inst->Alpha.OutputWriteMask) {
-               code->alu.inst[ip].alpha_addr |= R300_ALU_DSTA_OUTPUT;
+               code->alu.inst[ip].alpha_addr |= R300_ALU_DSTA_OUTPUT |
+            R300_ALPHA_TARGET(inst->Alpha.Target);
                emit->node_flags |= R300_RGBA_OUT;
        }
        if (inst->Alpha.DepthWriteMask) {

diff --git a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c
index 5581f25..c2d5dc2 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c
+++ b/src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c
@@ -35,7 +35,10 @@ static void dataflow_outputs_mark_use(void * userdata, void * data,
                void (*callback)(void *, unsigned int, unsigned int))
 {
        struct r300_fragment_program_compiler * c = userdata;
-       callback(data, c->OutputColor, RC_MASK_XYZW);
+       callback(data, c->OutputColor[0], RC_MASK_XYZW);
+       callback(data, c->OutputColor[1], RC_MASK_XYZW);
+       callback(data, c->OutputColor[2], RC_MASK_XYZW);
+       callback(data, c->OutputColor[3], RC_MASK_XYZW);
        callback(data, c->OutputDepth, RC_MASK_W);
 }
 

diff --git a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
index b1b1439..c2eb613 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
+++ b/src/mesa/drivers/dri/r300/compiler/r500_fragprog_emit.c
@@ -241,6 +241,9 @@ static void emit_paired(struct r300_fragment_program_compiler *c, struct rc_pair
        code->inst[ip].inst4 |= translate_arg_alpha(inst, 1) << R500_ALPHA_SEL_B_SHIFT;
        code->inst[ip].inst5 |= translate_arg_alpha(inst, 2) << R500_ALU_RGBA_ALPHA_SEL_C_SHIFT;
 
+    code->inst[ip].inst3 |= R500_ALU_RGB_TARGET(inst->RGB.Target);
+    code->inst[ip].inst4 |= R500_ALPHA_TARGET(inst->Alpha.Target);
+
        if (inst->WriteALUResult) {
                code->inst[ip].inst3 |= R500_ALU_RGB_WMASK;
 

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h
index f27f858..6bfda05 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_compiler.h
@@ -83,8 +83,10 @@ struct r300_fragment_program_compiler {
        struct rX00_fragment_program_code *code;
        struct r300_fragment_program_external_state state;
        unsigned is_r500;
+    /* Register corresponding to the depthbuffer. */
        unsigned OutputDepth;
-       unsigned OutputColor;
+    /* Registers corresponding to the four colorbuffers. */
+       unsigned OutputColor[4];
 
        void * UserData;
        void (*AllocateHwInputs)(

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_pair_translate.c b/src/mesa/drivers/dri/r300/compiler/radeon_pair_translate.c
index 7211768..80cc5ff 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_pair_translate.c
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_pair_translate.c
@@ -203,12 +203,21 @@ static void set_pair_instruction(struct r300_fragment_program_compiler *c,
 
        /* Destination handling */
        if (inst->DstReg.File == RC_FILE_OUTPUT) {
-               if (inst->DstReg.Index == c->OutputColor) {
-                       pair->RGB.OutputWriteMask |= inst->DstReg.WriteMask & RC_MASK_XYZ;
-                       pair->Alpha.OutputWriteMask |= GET_BIT(inst->DstReg.WriteMask, 3);
-               } else if (inst->DstReg.Index == c->OutputDepth) {
-                       pair->Alpha.DepthWriteMask |= GET_BIT(inst->DstReg.WriteMask, 3);
-               }
+        if (inst->DstReg.Index == c->OutputDepth) {
+            pair->Alpha.DepthWriteMask |= GET_BIT(inst->DstReg.WriteMask, 3);
+        } else {
+            for (i = 0; i < 4; i++) {
+                if (inst->DstReg.Index == c->OutputColor[i]) {
+                    pair->RGB.Target = inst->DstReg.Index;
+                    pair->Alpha.Target = inst->DstReg.Index;
+                    pair->RGB.OutputWriteMask |=
+                        inst->DstReg.WriteMask & RC_MASK_XYZ;
+                    pair->Alpha.OutputWriteMask |=
+                        GET_BIT(inst->DstReg.WriteMask, 3);
+                    break;
+                }
+            }
+        }
        } else {
                if (needrgb) {
                        pair->RGB.DestIndex = inst->DstReg.Index;

diff --git a/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.h b/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.h
index 6685ade..511cc70 100644 (file)
--- a/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.h
+++ b/src/mesa/drivers/dri/r300/compiler/radeon_program_pair.h
@@ -60,6 +60,7 @@ struct radeon_pair_instruction_rgb {
        unsigned int Opcode:8;
        unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
        unsigned int WriteMask:3;
+    unsigned int Target:2;
        unsigned int OutputWriteMask:3;
        unsigned int Saturate:1;
 
@@ -77,6 +78,7 @@ struct radeon_pair_instruction_alpha {
        unsigned int Opcode:8;
        unsigned int DestIndex:RC_REGISTER_INDEX_BITS;
        unsigned int WriteMask:1;
+    unsigned int Target:2;
        unsigned int OutputWriteMask:1;
        unsigned int DepthWriteMask:1;
        unsigned int Saturate:1;

diff --git a/src/mesa/drivers/dri/r300/r300_fragprog_common.c b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
index e41aeff..3ec43e6 100644 (file)
--- a/src/mesa/drivers/dri/r300/r300_fragprog_common.c
+++ b/src/mesa/drivers/dri/r300/r300_fragprog_common.c
@@ -221,7 +221,7 @@ static void translate_fragment_program(GLcontext *ctx, struct r300_fragment_prog
        compiler.state = fp->state;
        compiler.is_r500 = (r300->radeon.radeonScreen->chip_family >= CHIP_FAMILY_RV515) ? GL_TRUE : GL_FALSE;
        compiler.OutputDepth = FRAG_RESULT_DEPTH;
-       compiler.OutputColor = FRAG_RESULT_COLOR;
+       compiler.OutputColor[0] = FRAG_RESULT_COLOR;
        compiler.AllocateHwInputs = &allocate_hw_inputs;
 
        if (compiler.Base.Debug) {