diff options
| -rw-r--r-- | src/gallium/auxiliary/util/u_pstipple.c | 185 |
1 files changed, 62 insertions, 123 deletions
diff --git a/src/gallium/auxiliary/util/u_pstipple.c b/src/gallium/auxiliary/util/u_pstipple.c index 92343d617e6..1e1ec4a985c 100644 --- a/src/gallium/auxiliary/util/u_pstipple.c +++ b/src/gallium/auxiliary/util/u_pstipple.c @@ -181,7 +181,6 @@ struct pstip_transform_context { uint samplersUsed; /**< bitfield of samplers used */ int freeSampler; /** an available sampler for the pstipple */ int numImmed; - boolean firstInstruction; uint coordOrigin; }; @@ -242,7 +241,7 @@ free_bit(uint bitfield) /** - * TGSI instruction transform callback. + * TGSI transform prolog * Before the first instruction, insert our new code to sample the * stipple texture (using the fragment coord register) then kill the * fragment if the stipple texture bit is off. @@ -255,136 +254,76 @@ free_bit(uint bitfield) * [...original code...] */ static void -pstip_transform_inst(struct tgsi_transform_context *ctx, - struct tgsi_full_instruction *inst) +pstip_transform_prolog(struct tgsi_transform_context *ctx) { struct pstip_transform_context *pctx = (struct pstip_transform_context *) ctx; int wincoordInput; int texTemp; - if (pctx->firstInstruction) { - /* emit our new declarations before the first instruction */ - - struct tgsi_full_declaration decl; - struct tgsi_full_instruction newInst; - - /* find free texture sampler */ - pctx->freeSampler = free_bit(pctx->samplersUsed); - if (pctx->freeSampler >= PIPE_MAX_SAMPLERS) - pctx->freeSampler = PIPE_MAX_SAMPLERS - 1; - - if (pctx->wincoordInput < 0) - wincoordInput = pctx->maxInput + 1; - else - wincoordInput = pctx->wincoordInput; - - if (pctx->wincoordInput < 0) { - /* declare new position input reg */ - decl = tgsi_default_full_declaration(); - decl.Declaration.File = TGSI_FILE_INPUT; - decl.Declaration.Interpolate = 1; - decl.Declaration.Semantic = 1; - decl.Semantic.Name = TGSI_SEMANTIC_POSITION; - decl.Semantic.Index = 0; - decl.Range.First = - decl.Range.Last = wincoordInput; - decl.Interp.Interpolate = TGSI_INTERPOLATE_LINEAR; - ctx->emit_declaration(ctx, &decl); - } - - /* declare new sampler */ - decl = tgsi_default_full_declaration(); - decl.Declaration.File = TGSI_FILE_SAMPLER; - decl.Range.First = - decl.Range.Last = pctx->freeSampler; - ctx->emit_declaration(ctx, &decl); - - /* Declare temp[0] reg if not already declared. - * We can always use temp[0] since this code is before - * the rest of the shader. - */ - texTemp = 0; - if ((pctx->tempsUsed & (1 << texTemp)) == 0) { - decl = tgsi_default_full_declaration(); - decl.Declaration.File = TGSI_FILE_TEMPORARY; - decl.Range.First = - decl.Range.Last = texTemp; - ctx->emit_declaration(ctx, &decl); - } + /* find free texture sampler */ + pctx->freeSampler = free_bit(pctx->samplersUsed); + if (pctx->freeSampler >= PIPE_MAX_SAMPLERS) + pctx->freeSampler = PIPE_MAX_SAMPLERS - 1; + + if (pctx->wincoordInput < 0) + wincoordInput = pctx->maxInput + 1; + else + wincoordInput = pctx->wincoordInput; + + if (pctx->wincoordInput < 0) { + /* declare new position input reg */ + tgsi_transform_input_decl(ctx, wincoordInput, + TGSI_SEMANTIC_POSITION, 1, + TGSI_INTERPOLATE_LINEAR); + } - /* emit immediate = {1/32, 1/32, 1, 1} - * The index/position of this immediate will be pctx->numImmed - */ - { - static const float value[4] = { 1.0/32, 1.0/32, 1.0, 1.0 }; - struct tgsi_full_immediate immed; - uint size = 4; - immed = tgsi_default_full_immediate(); - immed.Immediate.NrTokens = 1 + size; /* one for the token itself */ - immed.u[0].Float = value[0]; - immed.u[1].Float = value[1]; - immed.u[2].Float = value[2]; - immed.u[3].Float = value[3]; - ctx->emit_immediate(ctx, &immed); - } + /* declare new sampler */ + tgsi_transform_sampler_decl(ctx, pctx->freeSampler); - pctx->firstInstruction = FALSE; - - - /* - * Insert new MUL/TEX/KILL_IF instructions at start of program - * Take gl_FragCoord, divide by 32 (stipple size), sample the - * texture and kill fragment if needed. - * - * We'd like to use non-normalized texcoords to index into a RECT - * texture, but we can only use REPEAT wrap mode with normalized - * texcoords. Darn. - */ - - /* XXX invert wincoord if origin isn't lower-left... */ - - /* MUL texTemp, INPUT[wincoord], 1/32; */ - 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 = texTemp; - newInst.Instruction.NumSrcRegs = 2; - newInst.Src[0].Register.File = TGSI_FILE_INPUT; - newInst.Src[0].Register.Index = wincoordInput; - newInst.Src[1].Register.File = TGSI_FILE_IMMEDIATE; - newInst.Src[1].Register.Index = pctx->numImmed; - ctx->emit_instruction(ctx, &newInst); - - /* TEX texTemp, texTemp, sampler; */ - newInst = tgsi_default_full_instruction(); - newInst.Instruction.Opcode = TGSI_OPCODE_TEX; - newInst.Instruction.NumDstRegs = 1; - newInst.Dst[0].Register.File = TGSI_FILE_TEMPORARY; - newInst.Dst[0].Register.Index = texTemp; - newInst.Instruction.NumSrcRegs = 2; - newInst.Instruction.Texture = TRUE; - newInst.Texture.Texture = TGSI_TEXTURE_2D; - newInst.Src[0].Register.File = TGSI_FILE_TEMPORARY; - newInst.Src[0].Register.Index = texTemp; - newInst.Src[1].Register.File = TGSI_FILE_SAMPLER; - newInst.Src[1].Register.Index = pctx->freeSampler; - ctx->emit_instruction(ctx, &newInst); - - /* KILL_IF -texTemp; # if -texTemp < 0, kill fragment */ - 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 = texTemp; - newInst.Src[0].Register.Negate = 1; - ctx->emit_instruction(ctx, &newInst); + /* Declare temp[0] reg if not already declared. + * We can always use temp[0] since this code is before + * the rest of the shader. + */ + texTemp = 0; + if ((pctx->tempsUsed & (1 << texTemp)) == 0) { + tgsi_transform_temp_decl(ctx, texTemp); } - /* emit this instruction */ - ctx->emit_instruction(ctx, inst); + /* emit immediate = {1/32, 1/32, 1, 1} + * The index/position of this immediate will be pctx->numImmed + */ + tgsi_transform_immediate_decl(ctx, 1.0/32.0, 1.0/32.0, 1.0, 1.0); + + /* + * Insert new MUL/TEX/KILL_IF instructions at start of program + * Take gl_FragCoord, divide by 32 (stipple size), sample the + * texture and kill fragment if needed. + * + * We'd like to use non-normalized texcoords to index into a RECT + * texture, but we can only use REPEAT wrap mode with normalized + * texcoords. Darn. + */ + + /* XXX invert wincoord if origin isn't lower-left... */ + + /* MUL texTemp, INPUT[wincoord], 1/32; */ + tgsi_transform_op2_inst(ctx, TGSI_OPCODE_MUL, + TGSI_FILE_TEMPORARY, texTemp, + TGSI_WRITEMASK_XYZW, + TGSI_FILE_INPUT, wincoordInput, + TGSI_FILE_IMMEDIATE, pctx->numImmed); + + /* TEX texTemp, texTemp, sampler; */ + tgsi_transform_tex_2d_inst(ctx, + TGSI_FILE_TEMPORARY, texTemp, + TGSI_FILE_TEMPORARY, texTemp, + pctx->freeSampler); + + /* KILL_IF -texTemp; # if -texTemp < 0, kill fragment */ + tgsi_transform_kill_inst(ctx, + TGSI_FILE_TEMPORARY, texTemp, + TGSI_SWIZZLE_W); } @@ -413,7 +352,7 @@ util_pstipple_create_fragment_shader(const struct tgsi_token *tokens, transform.wincoordInput = -1; transform.maxInput = -1; transform.coordOrigin = TGSI_FS_COORD_ORIGIN_UPPER_LEFT; - transform.base.transform_instruction = pstip_transform_inst; + transform.base.prolog = pstip_transform_prolog; transform.base.transform_declaration = pstip_transform_decl; transform.base.transform_immediate = pstip_transform_immed; |