int colorOutput; /**< which output is the primary color */
int maxInput, maxGeneric; /**< max input index found */
int tmp0, colorTemp; /**< temp registers */
- boolean firstInstruction;
};
/**
- * TGSI instruction transform callback.
- * Replace writes to result.color w/ a temp reg.
- * Upon END instruction, insert texture sampling code for antialiasing.
+ * TGSI transform callback.
+ * Insert new declarations and instructions before first instruction.
*/
static void
-aa_transform_inst(struct tgsi_transform_context *ctx,
- struct tgsi_full_instruction *inst)
+aa_transform_prolog(struct tgsi_transform_context *ctx)
{
+ /* emit our new declarations before the first instruction */
struct aa_transform_context *aactx = (struct aa_transform_context *) ctx;
struct tgsi_full_instruction newInst;
+ struct tgsi_full_declaration decl;
+ const int texInput = aactx->maxInput + 1;
+ int tmp0;
+ uint i;
- if (aactx->firstInstruction) {
- /* emit our new declarations before the first instruction */
+ /* find two free temp regs */
+ for (i = 0; i < 32; i++) {
+ if ((aactx->tempsUsed & (1 << i)) == 0) {
+ /* found a free temp */
+ if (aactx->tmp0 < 0)
+ aactx->tmp0 = i;
+ else if (aactx->colorTemp < 0)
+ aactx->colorTemp = i;
+ else
+ break;
+ }
+ }
- struct tgsi_full_declaration decl;
- const int texInput = aactx->maxInput + 1;
- int tmp0;
- uint i;
+ assert(aactx->colorTemp != aactx->tmp0);
+
+ tmp0 = aactx->tmp0;
+
+ /* declare new generic input/texcoord */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_INPUT;
+ /* XXX this could be linear... */
+ decl.Declaration.Interpolate = 1;
+ decl.Declaration.Semantic = 1;
+ decl.Semantic.Name = TGSI_SEMANTIC_GENERIC;
+ decl.Semantic.Index = aactx->maxGeneric + 1;
+ decl.Range.First =
+ decl.Range.Last = texInput;
+ decl.Interp.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE;
+ ctx->emit_declaration(ctx, &decl);
+
+ /* declare new temp regs */
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_TEMPORARY;
+ decl.Range.First =
+ decl.Range.Last = tmp0;
+ ctx->emit_declaration(ctx, &decl);
+
+ decl = tgsi_default_full_declaration();
+ decl.Declaration.File = TGSI_FILE_TEMPORARY;
+ decl.Range.First =
+ decl.Range.Last = aactx->colorTemp;
+ ctx->emit_declaration(ctx, &decl);
- /* find two free temp regs */
- for (i = 0; i < 32; i++) {
- if ((aactx->tempsUsed & (1 << i)) == 0) {
- /* found a free temp */
- if (aactx->tmp0 < 0)
- aactx->tmp0 = i;
- else if (aactx->colorTemp < 0)
- aactx->colorTemp = i;
- else
- break;
- }
- }
+ /*
+ * Emit code to compute fragment coverage, kill if outside point radius
+ *
+ * Temp reg0 usage:
+ * t0.x = distance of fragment from center point
+ * t0.y = boolean, is t0.x > 1.0, also misc temp usage
+ * t0.z = temporary for computing 1/(1-k) value
+ * t0.w = final coverage value
+ */
- assert(aactx->colorTemp != aactx->tmp0);
-
- tmp0 = aactx->tmp0;
-
- /* declare new generic input/texcoord */
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_INPUT;
- /* XXX this could be linear... */
- decl.Declaration.Interpolate = 1;
- decl.Declaration.Semantic = 1;
- decl.Semantic.Name = TGSI_SEMANTIC_GENERIC;
- decl.Semantic.Index = aactx->maxGeneric + 1;
- decl.Range.First =
- decl.Range.Last = texInput;
- decl.Interp.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE;
- ctx->emit_declaration(ctx, &decl);
-
- /* declare new temp regs */
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_TEMPORARY;
- decl.Range.First =
- decl.Range.Last = tmp0;
- ctx->emit_declaration(ctx, &decl);
-
- decl = tgsi_default_full_declaration();
- decl.Declaration.File = TGSI_FILE_TEMPORARY;
- decl.Range.First =
- decl.Range.Last = aactx->colorTemp;
- ctx->emit_declaration(ctx, &decl);
-
- aactx->firstInstruction = FALSE;
-
-
- /*
- * Emit code to compute fragment coverage, kill if outside point radius
- *
- * Temp reg0 usage:
- * t0.x = distance of fragment from center point
- * t0.y = boolean, is t0.x > 1.0, also misc temp usage
- * t0.z = temporary for computing 1/(1-k) value
- * t0.w = final coverage value
- */
-
- /* MUL t0.xy, tex, tex; # compute x^2, y^2 */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XY;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_INPUT;
- newInst.Src[0].Register.Index = texInput;
- newInst.Src[1].Register.File = TGSI_FILE_INPUT;
- newInst.Src[1].Register.Index = texInput;
- ctx->emit_instruction(ctx, &newInst);
-
- /* ADD t0.x, t0.x, t0.y; # x^2 + y^2 */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_ADD;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_X;
- newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[1].Register.Index = tmp0;
- newInst.Src[1].Register.SwizzleX = TGSI_SWIZZLE_Y;
- ctx->emit_instruction(ctx, &newInst);
+ /* MUL t0.xy, tex, tex; # compute x^2, y^2 */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XY;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[0].Register.Index = texInput;
+ newInst.Src[1].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[1].Register.Index = texInput;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* ADD t0.x, t0.x, t0.y; # x^2 + y^2 */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_ADD;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_X;
+ newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[1].Register.Index = tmp0;
+ newInst.Src[1].Register.SwizzleX = TGSI_SWIZZLE_Y;
+ ctx->emit_instruction(ctx, &newInst);
#if NORMALIZE /* OPTIONAL normalization of length */
- /* RSQ t0.x, t0.x; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_RSQ;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- ctx->emit_instruction(ctx, &newInst);
-
- /* RCP t0.x, t0.x; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_RCP;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- ctx->emit_instruction(ctx, &newInst);
+ /* RSQ t0.x, t0.x; */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_RSQ;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
+ newInst.Instruction.NumSrcRegs = 1;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* RCP t0.x, t0.x; */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_RCP;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_X;
+ newInst.Instruction.NumSrcRegs = 1;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ ctx->emit_instruction(ctx, &newInst);
#endif
- /* SGT t0.y, t0.xxxx, tex.wwww; # bool b = d > 1 (NOTE tex.w == 1) */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_SGT;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_X;
- newInst.Src[1].Register.File = TGSI_FILE_INPUT;
- newInst.Src[1].Register.Index = texInput;
- newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_W;
- ctx->emit_instruction(ctx, &newInst);
-
- /* KILL_IF -tmp0.yyyy; # if -tmp0.y < 0, KILL */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
- newInst.Instruction.NumDstRegs = 0;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.Negate = 1;
- ctx->emit_instruction(ctx, &newInst);
-
-
- /* compute coverage factor = (1-d)/(1-k) */
-
- /* SUB t0.z, tex.w, tex.z; # m = 1 - k */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_SUB;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Z;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_INPUT;
- newInst.Src[0].Register.Index = texInput;
- newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_W;
- newInst.Src[1].Register.File = TGSI_FILE_INPUT;
- newInst.Src[1].Register.Index = texInput;
- newInst.Src[1].Register.SwizzleZ = TGSI_SWIZZLE_Z;
- ctx->emit_instruction(ctx, &newInst);
-
- /* RCP t0.z, t0.z; # t0.z = 1 / m */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_RCP;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Z;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Z;
- ctx->emit_instruction(ctx, &newInst);
-
- /* SUB t0.y, 1, t0.x; # d = 1 - d */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_SUB;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_INPUT;
- newInst.Src[0].Register.Index = texInput;
- newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_W;
- newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[1].Register.Index = tmp0;
- newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_X;
- ctx->emit_instruction(ctx, &newInst);
-
- /* MUL t0.w, t0.y, t0.z; # coverage = d * m */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
- newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[1].Register.Index = tmp0;
- newInst.Src[1].Register.SwizzleW = TGSI_SWIZZLE_Z;
- ctx->emit_instruction(ctx, &newInst);
-
- /* SLE t0.y, t0.x, tex.z; # bool b = distance <= k */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_SLE;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_X;
- newInst.Src[1].Register.File = TGSI_FILE_INPUT;
- newInst.Src[1].Register.Index = texInput;
- newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_Z;
- ctx->emit_instruction(ctx, &newInst);
-
- /* CMP t0.w, -t0.y, tex.w, t0.w;
- * # if -t0.y < 0 then
- * t0.w = 1
- * else
- * t0.w = t0.w
- */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_CMP;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Dst[0].Register.Index = tmp0;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
- newInst.Instruction.NumSrcRegs = 3;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = tmp0;
- newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
- newInst.Src[0].Register.Negate = 1;
- newInst.Src[1].Register.File = TGSI_FILE_INPUT;
- newInst.Src[1].Register.Index = texInput;
- newInst.Src[1].Register.SwizzleX = TGSI_SWIZZLE_W;
- newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_W;
- newInst.Src[1].Register.SwizzleZ = TGSI_SWIZZLE_W;
- newInst.Src[1].Register.SwizzleW = TGSI_SWIZZLE_W;
- newInst.Src[2].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[2].Register.Index = tmp0;
- newInst.Src[2].Register.SwizzleX = TGSI_SWIZZLE_W;
- newInst.Src[2].Register.SwizzleY = TGSI_SWIZZLE_W;
- newInst.Src[2].Register.SwizzleZ = TGSI_SWIZZLE_W;
- newInst.Src[2].Register.SwizzleW = TGSI_SWIZZLE_W;
- ctx->emit_instruction(ctx, &newInst);
+ /* SGT t0.y, t0.xxxx, tex.wwww; # bool b = d > 1 (NOTE tex.w == 1) */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_SGT;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_X;
+ newInst.Src[1].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[1].Register.Index = texInput;
+ newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_W;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* KILL_IF -tmp0.yyyy; # if -tmp0.y < 0, KILL */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_KILL_IF;
+ newInst.Instruction.NumDstRegs = 0;
+ newInst.Instruction.NumSrcRegs = 1;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.Negate = 1;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* compute coverage factor = (1-d)/(1-k) */
+
+ /* SUB t0.z, tex.w, tex.z; # m = 1 - k */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_SUB;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Z;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[0].Register.Index = texInput;
+ newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_W;
+ newInst.Src[1].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[1].Register.Index = texInput;
+ newInst.Src[1].Register.SwizzleZ = TGSI_SWIZZLE_Z;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* RCP t0.z, t0.z; # t0.z = 1 / m */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_RCP;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Z;
+ newInst.Instruction.NumSrcRegs = 1;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Z;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* SUB t0.y, 1, t0.x; # d = 1 - d */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_SUB;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[0].Register.Index = texInput;
+ newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_W;
+ newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[1].Register.Index = tmp0;
+ newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_X;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* MUL t0.w, t0.y, t0.z; # coverage = d * m */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
+ newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[1].Register.Index = tmp0;
+ newInst.Src[1].Register.SwizzleW = TGSI_SWIZZLE_Z;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* SLE t0.y, t0.x, tex.z; # bool b = distance <= k */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_SLE;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_Y;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_X;
+ newInst.Src[1].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[1].Register.Index = texInput;
+ newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_Z;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* CMP t0.w, -t0.y, tex.w, t0.w;
+ * # if -t0.y < 0 then
+ * t0.w = 1
+ * else
+ * t0.w = t0.w
+ */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_CMP;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Dst[0].Register.Index = tmp0;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
+ newInst.Instruction.NumSrcRegs = 3;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = tmp0;
+ newInst.Src[0].Register.SwizzleX = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleY = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleZ = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.SwizzleW = TGSI_SWIZZLE_Y;
+ newInst.Src[0].Register.Negate = 1;
+ newInst.Src[1].Register.File = TGSI_FILE_INPUT;
+ newInst.Src[1].Register.Index = texInput;
+ newInst.Src[1].Register.SwizzleX = TGSI_SWIZZLE_W;
+ newInst.Src[1].Register.SwizzleY = TGSI_SWIZZLE_W;
+ newInst.Src[1].Register.SwizzleZ = TGSI_SWIZZLE_W;
+ newInst.Src[1].Register.SwizzleW = TGSI_SWIZZLE_W;
+ newInst.Src[2].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[2].Register.Index = tmp0;
+ newInst.Src[2].Register.SwizzleX = TGSI_SWIZZLE_W;
+ newInst.Src[2].Register.SwizzleY = TGSI_SWIZZLE_W;
+ newInst.Src[2].Register.SwizzleZ = TGSI_SWIZZLE_W;
+ newInst.Src[2].Register.SwizzleW = TGSI_SWIZZLE_W;
+ ctx->emit_instruction(ctx, &newInst);
+}
- }
- if (inst->Instruction.Opcode == TGSI_OPCODE_END) {
- /* add alpha modulation code at tail of program */
-
- /* MOV result.color.xyz, colorTemp; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_MOV;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
- newInst.Dst[0].Register.Index = aactx->colorOutput;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XYZ;
- newInst.Instruction.NumSrcRegs = 1;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = aactx->colorTemp;
- ctx->emit_instruction(ctx, &newInst);
-
- /* MUL result.color.w, colorTemp, tmp0.w; */
- newInst = tgsi_default_full_instruction();
- newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
- newInst.Instruction.NumDstRegs = 1;
- newInst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
- newInst.Dst[0].Register.Index = aactx->colorOutput;
- newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
- newInst.Instruction.NumSrcRegs = 2;
- newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[0].Register.Index = aactx->colorTemp;
- newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
- newInst.Src[1].Register.Index = aactx->tmp0;
- ctx->emit_instruction(ctx, &newInst);
- }
- else {
- /* Not an END instruction.
- * Look for writes to result.color and replace with colorTemp reg.
- */
- uint i;
+/**
+ * TGSI transform callback.
+ * Insert new instructions before the END instruction.
+ */
+static void
+aa_transform_epilog(struct tgsi_transform_context *ctx)
+{
+ /* emit our new declarations before the first instruction */
+ struct aa_transform_context *aactx = (struct aa_transform_context *) ctx;
+ struct tgsi_full_instruction newInst;
- for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
- struct tgsi_full_dst_register *dst = &inst->Dst[i];
- if (dst->Register.File == TGSI_FILE_OUTPUT &&
- dst->Register.Index == aactx->colorOutput) {
- dst->Register.File = TGSI_FILE_TEMPORARY;
- dst->Register.Index = aactx->colorTemp;
- }
+ /* add alpha modulation code at tail of program */
+
+ /* MOV result.color.xyz, colorTemp; */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_MOV;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
+ newInst.Dst[0].Register.Index = aactx->colorOutput;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_XYZ;
+ newInst.Instruction.NumSrcRegs = 1;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = aactx->colorTemp;
+ ctx->emit_instruction(ctx, &newInst);
+
+ /* MUL result.color.w, colorTemp, tmp0.w; */
+ newInst = tgsi_default_full_instruction();
+ newInst.Instruction.Opcode = TGSI_OPCODE_MUL;
+ newInst.Instruction.NumDstRegs = 1;
+ newInst.Dst[0].Register.File = TGSI_FILE_OUTPUT;
+ newInst.Dst[0].Register.Index = aactx->colorOutput;
+ newInst.Dst[0].Register.WriteMask = TGSI_WRITEMASK_W;
+ newInst.Instruction.NumSrcRegs = 2;
+ newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[0].Register.Index = aactx->colorTemp;
+ newInst.Src[1].Register.File = TGSI_FILE_TEMPORARY;
+ newInst.Src[1].Register.Index = aactx->tmp0;
+ ctx->emit_instruction(ctx, &newInst);
+}
+
+
+/**
+ * TGSI transform callback.
+ * Called per instruction.
+ * Replace writes to result.color w/ a temp reg.
+ */
+static void
+aa_transform_inst(struct tgsi_transform_context *ctx,
+ struct tgsi_full_instruction *inst)
+{
+ struct aa_transform_context *aactx = (struct aa_transform_context *) ctx;
+ unsigned i;
+
+ /* Not an END instruction.
+ * Look for writes to result.color and replace with colorTemp reg.
+ */
+ for (i = 0; i < inst->Instruction.NumDstRegs; i++) {
+ struct tgsi_full_dst_register *dst = &inst->Dst[i];
+ if (dst->Register.File == TGSI_FILE_OUTPUT &&
+ dst->Register.Index == aactx->colorOutput) {
+ dst->Register.File = TGSI_FILE_TEMPORARY;
+ dst->Register.Index = aactx->colorTemp;
}
}
transform.maxGeneric = -1;
transform.colorTemp = -1;
transform.tmp0 = -1;
- transform.firstInstruction = TRUE;
+ transform.base.prolog = aa_transform_prolog;
+ transform.base.epilog = aa_transform_epilog;
transform.base.transform_instruction = aa_transform_inst;
transform.base.transform_declaration = aa_transform_decl;
projects / mesa.git / commitdiff