diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_pipe_aapoint.c | 621 |
1 files changed, 316 insertions, 305 deletions
diff --git a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c index 686776a50ab..3f2ef08d8f3 100644 --- a/src/gallium/auxiliary/draw/draw_pipe_aapoint.c +++ b/src/gallium/auxiliary/draw/draw_pipe_aapoint.c @@ -121,7 +121,6 @@ struct aa_transform_context { int colorOutput; /**< which output is the primary color */ int maxInput, maxGeneric; /**< max input index found */ int tmp0, colorTemp; /**< temp registers */ - boolean firstInstruction; }; @@ -161,325 +160,336 @@ aa_transform_decl(struct tgsi_transform_context *ctx, /** - * 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; } } @@ -511,7 +521,8 @@ generate_aapoint_fs(struct aapoint_stage *aapoint) 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; |