diff options
Diffstat (limited to 'src/gallium')
| -rw-r--r-- | src/gallium/auxiliary/draw/Makefile | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_aapoint.c | 875 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_context.c | 2 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_context.h | 3 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_private.h | 1 | ||||
| -rw-r--r-- | src/gallium/auxiliary/draw/draw_validate.c | 5 | ||||
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_context.c | 6 |
7 files changed, 892 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/draw/Makefile b/src/gallium/auxiliary/draw/Makefile index 1ee9eca0ca5..b7e71ed3ec7 100644 --- a/src/gallium/auxiliary/draw/Makefile +++ b/src/gallium/auxiliary/draw/Makefile @@ -5,6 +5,7 @@ LIBNAME = draw C_SOURCES = \ draw_aaline.c \ + draw_aapoint.c \ draw_clip.c \ draw_vs_exec.c \ draw_vs_sse.c \ diff --git a/src/gallium/auxiliary/draw/draw_aapoint.c b/src/gallium/auxiliary/draw/draw_aapoint.c new file mode 100644 index 00000000000..43119cc70b4 --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_aapoint.c @@ -0,0 +1,875 @@ +/************************************************************************** + * + * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas. + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sub license, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice (including the + * next paragraph) shall be included in all copies or substantial portions + * of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. + * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR + * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, + * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE + * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + * + **************************************************************************/ + +/** + * AA point stage: AA points are converted to quads and rendered with a + * special fragment shader. Another approach would be to use a texture + * map image of a point, but experiments indicate the quality isn't nearly + * as good as this approach. + * + * Note: this looks a lot like draw_aaline.c but there's actually little + * if any code that can be shared. + * + * Authors: Brian Paul + */ + + +#include "pipe/p_util.h" +#include "pipe/p_inlines.h" +#include "pipe/p_context.h" +#include "pipe/p_defines.h" +#include "pipe/p_shader_tokens.h" + +#include "tgsi/util/tgsi_transform.h" +#include "tgsi/util/tgsi_dump.h" + +#include "draw_context.h" +#include "draw_private.h" + + +/* + * Enabling NORMALIZE might give _slightly_ better results. + * Basically, it controls whether we compute distance as d=sqrt(x*x+y*y) or + * d=x*x+y*y. Since we're working with a unit circle, the later seems + * close enough and saves some costly instructions. + */ +#define NORMALIZE 0 + + +/** + * Subclass of pipe_shader_state to carry extra fragment shader info. + */ +struct aapoint_fragment_shader +{ + struct pipe_shader_state state; + void *driver_fs; /**< the regular shader */ + void *aapoint_fs; /**< the aa point-augmented shader */ +}; + + +/** + * Subclass of draw_stage + */ +struct aapoint_stage +{ + struct draw_stage stage; + + int psize_slot; + float radius; + + /** this is the vertex attrib slot for the new texcoords */ + uint tex_slot; + + /* + * Currently bound state + */ + struct aapoint_fragment_shader *fs; + + /* + * Driver interface/override functions + */ + void * (*driver_create_fs_state)(struct pipe_context *, + const struct pipe_shader_state *); + void (*driver_bind_fs_state)(struct pipe_context *, void *); + void (*driver_delete_fs_state)(struct pipe_context *, void *); + + struct pipe_context *pipe; +}; + + + +/** + * Subclass of tgsi_transform_context, used for transforming the + * user's fragment shader to add the special AA instructions. + */ +struct aa_transform_context { + struct tgsi_transform_context base; + uint tempsUsed; /**< bitmask */ + int colorOutput; /**< which output is the primary color */ + int maxInput, maxGeneric; /**< max input index found */ + int tmp0, colorTemp; /**< temp registers */ + boolean firstInstruction; +}; + + +/** + * TGSI declaration transform callback. + * Look for two free temp regs and available input reg for new texcoords. + */ +static void +aa_transform_decl(struct tgsi_transform_context *ctx, + struct tgsi_full_declaration *decl) +{ + struct aa_transform_context *aactx = (struct aa_transform_context *) ctx; + + if (decl->Declaration.File == TGSI_FILE_OUTPUT && + decl->Semantic.SemanticName == TGSI_SEMANTIC_COLOR && + decl->Semantic.SemanticIndex == 0) { + aactx->colorOutput = decl->u.DeclarationRange.First; + } + else if (decl->Declaration.File == TGSI_FILE_INPUT) { + if ((int) decl->u.DeclarationRange.Last > aactx->maxInput) + aactx->maxInput = decl->u.DeclarationRange.Last; + if (decl->Semantic.SemanticName == TGSI_SEMANTIC_GENERIC && + (int) decl->Semantic.SemanticIndex > aactx->maxGeneric) { + aactx->maxGeneric = decl->Semantic.SemanticIndex; + } + } + else if (decl->Declaration.File == TGSI_FILE_TEMPORARY) { + uint i; + for (i = decl->u.DeclarationRange.First; + i <= decl->u.DeclarationRange.Last; i++) { + aactx->tempsUsed |= (1 << i); + } + } + + ctx->emit_declaration(ctx, decl); +} + + +/** + * TGSI instruction transform callback. + * Replace writes to result.color w/ a temp reg. + * Upon END instruction, insert texture sampling code for antialiasing. + */ +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; + struct tgsi_full_instruction newInst; + + if (aactx->firstInstruction) { + /* emit our new declarations before the first instruction */ + + struct tgsi_full_declaration decl; + const int texInput = aactx->maxInput + 1; + int tmp0; + uint i; + + /* 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; + } + } + + assert(aactx->colorTemp != aactx->tmp0); + + tmp0 = aactx->tmp0; + + /* declare new generic input/texcoord */ + decl = tgsi_default_full_declaration(); + decl.Declaration.File = TGSI_FILE_INPUT; + decl.Declaration.Semantic = 1; + decl.Semantic.SemanticName = TGSI_SEMANTIC_GENERIC; + decl.Semantic.SemanticIndex = aactx->maxGeneric + 1; + decl.Declaration.Interpolate = 1; + /* XXX this could be linear... */ + decl.Interpolation.Interpolate = TGSI_INTERPOLATE_PERSPECTIVE; + decl.u.DeclarationRange.First = + decl.u.DeclarationRange.Last = texInput; + ctx->emit_declaration(ctx, &decl); + + /* declare new temp regs */ + decl = tgsi_default_full_declaration(); + decl.Declaration.File = TGSI_FILE_TEMPORARY; + decl.u.DeclarationRange.First = + decl.u.DeclarationRange.Last = tmp0; + ctx->emit_declaration(ctx, &decl); + + decl = tgsi_default_full_declaration(); + decl.Declaration.File = TGSI_FILE_TEMPORARY; + decl.u.DeclarationRange.First = + decl.u.DeclarationRange.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 ? + * 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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_XY; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[0].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[1].SrcRegister.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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_X; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleX = TGSI_SWIZZLE_X; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[1].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[1].SrcRegister.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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_X; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_X; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + ctx->emit_instruction(ctx, &newInst); +#endif + + /* SGT t0.y, t0.xxxx, t0.wwww; # bool b = d > 1 (NOTE t0.w == 1) */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_SGT; + newInst.Instruction.NumDstRegs = 1; + newInst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_Y; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleY = TGSI_SWIZZLE_X; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[1].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[1].SrcRegister.SwizzleY = TGSI_SWIZZLE_W; + ctx->emit_instruction(ctx, &newInst); + + /* KILP -t0.yyyy; # if b, KILL */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_KILP; + newInst.Instruction.NumDstRegs = 0; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleX = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleY = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleZ = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleW = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.Negate = 1; + ctx->emit_instruction(ctx, &newInst); + + /* SGT t0.y, t0.x, tex.z; # bool b = distance > k */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_SGT; + newInst.Instruction.NumDstRegs = 1; + newInst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_Y; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleY = TGSI_SWIZZLE_X; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[1].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[1].SrcRegister.SwizzleY = TGSI_SWIZZLE_Z; + ctx->emit_instruction(ctx, &newInst); + + /* IF t0.y # if b then */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_IF; + newInst.Instruction.NumDstRegs = 0; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleX = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleY = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleZ = TGSI_SWIZZLE_Y; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleW = TGSI_SWIZZLE_Y; + 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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_Z; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[0].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleZ = TGSI_SWIZZLE_W; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[1].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[1].SrcRegister.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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_Z; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleX = TGSI_SWIZZLE_Z; + ctx->emit_instruction(ctx, &newInst); + + /* SUB t0.x, 1, t0.x; # d = 1 - d */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_SUB; + newInst.Instruction.NumDstRegs = 1; + newInst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_X; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[0].SrcRegister.Index = texInput; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleX = TGSI_SWIZZLE_W; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[1].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[1].SrcRegister.SwizzleX = TGSI_SWIZZLE_X; + ctx->emit_instruction(ctx, &newInst); + + /* MUL t0.w, t0.x, t0.z; # coverage = d * m */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_MUL; + newInst.Instruction.NumDstRegs = 1; + newInst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_W; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[0].SrcRegister.SwizzleW = TGSI_SWIZZLE_X; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[1].SrcRegister.Index = tmp0; + newInst.FullSrcRegisters[1].SrcRegister.SwizzleW = TGSI_SWIZZLE_Z; + ctx->emit_instruction(ctx, &newInst); + } + + /* ELSE */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_ELSE; + newInst.Instruction.NumDstRegs = 0; + newInst.Instruction.NumSrcRegs = 0; + ctx->emit_instruction(ctx, &newInst); + + { + /* MOV t0.w, tex.w; # coverage = 1.0 */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_MOV; + newInst.Instruction.NumDstRegs = 1; + newInst.FullDstRegisters[0].DstRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullDstRegisters[0].DstRegister.Index = tmp0; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_W; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_INPUT; + newInst.FullSrcRegisters[0].SrcRegister.Index = texInput; + ctx->emit_instruction(ctx, &newInst); + } + + /* ENDIF */ + newInst = tgsi_default_full_instruction(); + newInst.Instruction.Opcode = TGSI_OPCODE_ENDIF; + newInst.Instruction.NumDstRegs = 0; + newInst.Instruction.NumSrcRegs = 0; + 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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT; + newInst.FullDstRegisters[0].DstRegister.Index = aactx->colorOutput; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_XYZ; + newInst.Instruction.NumSrcRegs = 1; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.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.FullDstRegisters[0].DstRegister.File = TGSI_FILE_OUTPUT; + newInst.FullDstRegisters[0].DstRegister.Index = aactx->colorOutput; + newInst.FullDstRegisters[0].DstRegister.WriteMask = TGSI_WRITEMASK_W; + newInst.Instruction.NumSrcRegs = 2; + newInst.FullSrcRegisters[0].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[0].SrcRegister.Index = aactx->colorTemp; + newInst.FullSrcRegisters[1].SrcRegister.File = TGSI_FILE_TEMPORARY; + newInst.FullSrcRegisters[1].SrcRegister.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; + + for (i = 0; i < inst->Instruction.NumDstRegs; i++) { + struct tgsi_full_dst_register *dst = &inst->FullDstRegisters[i]; + if (dst->DstRegister.File == TGSI_FILE_OUTPUT && + dst->DstRegister.Index == aactx->colorOutput) { + dst->DstRegister.File = TGSI_FILE_TEMPORARY; + dst->DstRegister.Index = aactx->colorTemp; + } + } + } + + ctx->emit_instruction(ctx, inst); +} + + +/** + * Generate the frag shader we'll use for drawing AA lines. + * This will be the user's shader plus some texture/modulate instructions. + */ +static void +generate_aapoint_fs(struct aapoint_stage *aapoint) +{ + const struct pipe_shader_state *orig_fs = &aapoint->fs->state; + struct draw_context *draw = aapoint->stage.draw; + struct pipe_shader_state aapoint_fs; + struct aa_transform_context transform; + +#define MAX 1000 + + aapoint_fs = *orig_fs; /* copy to init */ + aapoint_fs.tokens = MALLOC(sizeof(struct tgsi_token) * MAX); + + memset(&transform, 0, sizeof(transform)); + transform.colorOutput = -1; + transform.maxInput = -1; + transform.maxGeneric = -1; + transform.colorTemp = -1; + transform.tmp0 = -1; + transform.firstInstruction = TRUE; + transform.base.transform_instruction = aa_transform_inst; + transform.base.transform_declaration = aa_transform_decl; + + tgsi_transform_shader(orig_fs->tokens, + (struct tgsi_token *) aapoint_fs.tokens, + MAX, &transform.base); + +#if 0 /* DEBUG */ + tgsi_dump(orig_fs->tokens, 0); + tgsi_dump(aapoint_fs.tokens, 0); +#endif + + aapoint_fs.input_semantic_name[aapoint_fs.num_inputs] = TGSI_SEMANTIC_GENERIC; + aapoint_fs.input_semantic_index[aapoint_fs.num_inputs] = transform.maxGeneric + 1; + aapoint_fs.num_inputs++; + + aapoint->fs->aapoint_fs + = aapoint->driver_create_fs_state(aapoint->pipe, &aapoint_fs); + + /* advertise the extra post-transform vertex attributes which will have + * the texcoords. + */ + draw->extra_vp_outputs.semantic_name = TGSI_SEMANTIC_GENERIC; + draw->extra_vp_outputs.semantic_index = transform.maxGeneric + 1; +} + + +/** + * When we're about to draw our first AA line in a batch, this function is + * called to tell the driver to bind our modified fragment shader. + */ +static void +bind_aapoint_fragment_shader(struct aapoint_stage *aapoint) +{ + if (!aapoint->fs->aapoint_fs) { + generate_aapoint_fs(aapoint); + } + aapoint->driver_bind_fs_state(aapoint->pipe, aapoint->fs->aapoint_fs); +} + + + +static INLINE struct aapoint_stage * +aapoint_stage( struct draw_stage *stage ) +{ + return (struct aapoint_stage *) stage; +} + + +static void +passthrough_line(struct draw_stage *stage, struct prim_header *header) +{ + stage->next->line(stage->next, header); +} + + +static void +passthrough_tri(struct draw_stage *stage, struct prim_header *header) +{ + stage->next->tri(stage->next, header); +} + + +/** + * Draw an AA point by drawing a quad. + */ +static void +aapoint_point(struct draw_stage *stage, struct prim_header *header) +{ + const struct aapoint_stage *aapoint = aapoint_stage(stage); + struct prim_header tri; + struct vertex_header *v[4]; + uint texPos = aapoint->tex_slot; + float radius, *pos, *tex; + uint i; + float k; + + if (aapoint->psize_slot >= 0) { + radius = 0.5f * header->v[0]->data[aapoint->psize_slot][0]; + } + else { + radius = aapoint->radius; + } + + /* + * Note: the texcoords (generic attrib, really) we use are special: + * The S and T components simply vary from -1 to +1. + * The R component is k, below. + * The Q component is 1.0 and will used as a handy constant in the + * fragment shader. + */ + + /* + * k is the threshold distance from the point's center at which + * we begin alpha attenuation (the coverage value). + * Operating within a unit circle, we'll compute the fragment's + * distance 'd' from the center point using the texcoords. + * IF d > 1.0 THEN + * KILL fragment + * ELSE IF d > k THEN + * compute coverage in [0,1] proportional to d in [k, 1]. + * ELSE + * coverage = 1.0; // full coverage + * ENDIF + */ + +#if !NORMALIZE + k = 1.0 / radius; + k = 1.0 - 2.0 * k + k * k; +#else + k = 1.0 - 1.0 / radius; +#endif + + /* allocate/dup new verts */ + for (i = 0; i < 4; i++) { + v[i] = dup_vert(stage, header->v[0], i); + } + + /* new verts */ + pos = v[0]->data[0]; + pos[0] -= radius; + pos[1] -= radius; + + pos = v[1]->data[0]; + pos[0] += radius; + pos[1] -= radius; + + pos = v[2]->data[0]; + pos[0] += radius; + pos[1] += radius; + + pos = v[3]->data[0]; + pos[0] -= radius; + pos[1] += radius; + + /* new texcoords */ + tex = v[0]->data[texPos]; + ASSIGN_4V(tex, -1, -1, k, 1); + + tex = v[1]->data[texPos]; + ASSIGN_4V(tex, 1, -1, k, 1); + + tex = v[2]->data[texPos]; + ASSIGN_4V(tex, 1, 1, k, 1); + + tex = v[3]->data[texPos]; + ASSIGN_4V(tex, -1, 1, k, 1); + + /* emit 2 tris for the quad strip */ + tri.v[0] = v[0]; + tri.v[1] = v[1]; + tri.v[2] = v[2]; + stage->next->tri( stage->next, &tri ); + + tri.v[0] = v[0]; + tri.v[1] = v[2]; + tri.v[2] = v[3]; + stage->next->tri( stage->next, &tri ); +} + + +static void +aapoint_first_point(struct draw_stage *stage, struct prim_header *header) +{ + auto struct aapoint_stage *aapoint = aapoint_stage(stage); + struct draw_context *draw = stage->draw; + + assert(draw->rasterizer->point_smooth); + + if (draw->rasterizer->point_size <= 2.0) + aapoint->radius = 1.0; + else + aapoint->radius = 0.5f * draw->rasterizer->point_size; + + aapoint->tex_slot = draw->num_vs_outputs; + assert(aapoint->tex_slot > 0); /* output[0] is vertex pos */ + draw->extra_vp_outputs.slot = aapoint->tex_slot; + + /* + * Bind our fragprog. + */ + bind_aapoint_fragment_shader(aapoint); + + /* find psize slot in post-transform vertex */ + aapoint->psize_slot = -1; + if (draw->rasterizer->point_size_per_vertex) { + /* find PSIZ vertex output */ + const struct draw_vertex_shader *vs = draw->vertex_shader; + uint i; + for (i = 0; i < vs->state->num_outputs; i++) { + if (vs->state->output_semantic_name[i] == TGSI_SEMANTIC_PSIZE) { + aapoint->psize_slot = i; + break; + } + } + } + + /* now really draw first line */ + stage->point = aapoint_point; + stage->point(stage, header); +} + + +static void +aapoint_flush(struct draw_stage *stage, unsigned flags) +{ + struct draw_context *draw = stage->draw; + struct aapoint_stage *aapoint = aapoint_stage(stage); + struct pipe_context *pipe = aapoint->pipe; + + stage->point = aapoint_first_point; + stage->next->flush( stage->next, flags ); + + /* restore original frag shader */ + aapoint->driver_bind_fs_state(pipe, aapoint->fs->driver_fs); + + draw->extra_vp_outputs.slot = 0; +} + + +static void +aapoint_reset_stipple_counter(struct draw_stage *stage) +{ + stage->next->reset_stipple_counter( stage->next ); +} + + +static void +aapoint_destroy(struct draw_stage *stage) +{ + draw_free_temp_verts( stage ); + FREE( stage ); +} + + +static struct aapoint_stage * +draw_aapoint_stage(struct draw_context *draw) +{ + struct aapoint_stage *aapoint = CALLOC_STRUCT(aapoint_stage); + + draw_alloc_temp_verts( &aapoint->stage, 4 ); + + aapoint->stage.draw = draw; + aapoint->stage.next = NULL; + aapoint->stage.point = aapoint_first_point; + aapoint->stage.line = passthrough_line; + aapoint->stage.tri = passthrough_tri; + aapoint->stage.flush = aapoint_flush; + aapoint->stage.reset_stipple_counter = aapoint_reset_stipple_counter; + aapoint->stage.destroy = aapoint_destroy; + + return aapoint; +} + + +/* + * XXX temporary? solution to mapping a pipe_context to a aapoint_stage. + */ + +#define MAX_CONTEXTS 10 + +static struct pipe_context *Pipe[MAX_CONTEXTS]; +static struct aapoint_stage *Stage[MAX_CONTEXTS]; +static uint NumContexts; + +static void +add_aa_pipe_context(struct pipe_context *pipe, struct aapoint_stage *aa) +{ + assert(NumContexts < MAX_CONTEXTS); + Pipe[NumContexts] = pipe; + Stage[NumContexts] = aa; + NumContexts++; +} + +static struct aapoint_stage * +aapoint_stage_from_pipe(struct pipe_context *pipe) +{ + uint i; + for (i = 0; i < NumContexts; i++) { + if (Pipe[i] == pipe) + return Stage[i]; + } + assert(0); + return NULL; +} + + +/** + * This function overrides the driver's create_fs_state() function and + * will typically be called by the state tracker. + */ +static void * +aapoint_create_fs_state(struct pipe_context *pipe, + const struct pipe_shader_state *fs) +{ + struct aapoint_stage *aapoint = aapoint_stage_from_pipe(pipe); + struct aapoint_fragment_shader *aafs = CALLOC_STRUCT(aapoint_fragment_shader); + + if (aafs) { + aafs->state = *fs; + + /* pass-through */ + aafs->driver_fs = aapoint->driver_create_fs_state(aapoint->pipe, fs); + } + + return aafs; +} + + +static void +aapoint_bind_fs_state(struct pipe_context *pipe, void *fs) +{ + struct aapoint_stage *aapoint = aapoint_stage_from_pipe(pipe); + struct aapoint_fragment_shader *aafs = (struct aapoint_fragment_shader *) fs; + /* save current */ + aapoint->fs = aafs; + /* pass-through */ + aapoint->driver_bind_fs_state(aapoint->pipe, aafs->driver_fs); +} + + +static void +aapoint_delete_fs_state(struct pipe_context *pipe, void *fs) +{ + struct aapoint_stage *aapoint = aapoint_stage_from_pipe(pipe); + struct aapoint_fragment_shader *aafs = (struct aapoint_fragment_shader *) fs; + /* pass-through */ + aapoint->driver_delete_fs_state(aapoint->pipe, aafs->driver_fs); + FREE(aafs); +} + + +/** + * Called by drivers that want to install this AA point prim stage + * into the draw module's pipeline. This will not be used if the + * hardware has native support for AA points. + */ +void +draw_install_aapoint_stage(struct draw_context *draw, + struct pipe_context *pipe) +{ + struct aapoint_stage *aapoint; + + /* + * Create / install AA point drawing / prim stage + */ + aapoint = draw_aapoint_stage( draw ); + assert(aapoint); + draw->pipeline.aapoint = &aapoint->stage; + + aapoint->pipe = pipe; + + /* save original driver functions */ + aapoint->driver_create_fs_state = pipe->create_fs_state; + aapoint->driver_bind_fs_state = pipe->bind_fs_state; + aapoint->driver_delete_fs_state = pipe->delete_fs_state; + + /* override the driver's functions */ + pipe->create_fs_state = aapoint_create_fs_state; + pipe->bind_fs_state = aapoint_bind_fs_state; + pipe->delete_fs_state = aapoint_delete_fs_state; + + add_aa_pipe_context(pipe, aapoint); +} diff --git a/src/gallium/auxiliary/draw/draw_context.c b/src/gallium/auxiliary/draw/draw_context.c index b90a9f474de..c28e78d33a3 100644 --- a/src/gallium/auxiliary/draw/draw_context.c +++ b/src/gallium/auxiliary/draw/draw_context.c @@ -105,6 +105,8 @@ void draw_destroy( struct draw_context *draw ) draw->pipeline.validate->destroy( draw->pipeline.validate ); if (draw->pipeline.aaline) draw->pipeline.aaline->destroy( draw->pipeline.aaline ); + if (draw->pipeline.aapoint) + draw->pipeline.aapoint->destroy( draw->pipeline.aapoint ); if (draw->pipeline.rasterize) draw->pipeline.rasterize->destroy( draw->pipeline.rasterize ); tgsi_exec_machine_free_data(&draw->machine); diff --git a/src/gallium/auxiliary/draw/draw_context.h b/src/gallium/auxiliary/draw/draw_context.h index 82035aa8ada..43b58bc0563 100644 --- a/src/gallium/auxiliary/draw/draw_context.h +++ b/src/gallium/auxiliary/draw/draw_context.h @@ -99,6 +99,9 @@ boolean draw_use_sse(struct draw_context *draw); void draw_install_aaline_stage(struct draw_context *draw, struct pipe_context *pipe); +void +draw_install_aapoint_stage(struct draw_context *draw, struct pipe_context *pipe); + int draw_find_vs_output(struct draw_context *draw, diff --git a/src/gallium/auxiliary/draw/draw_private.h b/src/gallium/auxiliary/draw/draw_private.h index 492c152ff98..8c469e74b73 100644 --- a/src/gallium/auxiliary/draw/draw_private.h +++ b/src/gallium/auxiliary/draw/draw_private.h @@ -180,6 +180,7 @@ struct draw_context struct draw_stage *offset; struct draw_stage *unfilled; struct draw_stage *stipple; + struct draw_stage *aapoint; struct draw_stage *aaline; struct draw_stage *wide; struct draw_stage *rasterize; diff --git a/src/gallium/auxiliary/draw/draw_validate.c b/src/gallium/auxiliary/draw/draw_validate.c index 97e40e372b8..5167ef1e754 100644 --- a/src/gallium/auxiliary/draw/draw_validate.c +++ b/src/gallium/auxiliary/draw/draw_validate.c @@ -63,6 +63,11 @@ static struct draw_stage *validate_pipeline( struct draw_stage *stage ) next = draw->pipeline.aaline; } + if (draw->rasterizer->point_smooth && draw->pipeline.aapoint) { + draw->pipeline.aapoint->next = next; + next = draw->pipeline.aapoint; + } + if ((draw->rasterizer->line_width != 1.0 && draw->convert_wide_lines && !draw->rasterizer->line_smooth) || (draw->rasterizer->point_size != 1.0 && draw->convert_wide_points) || diff --git a/src/gallium/drivers/softpipe/sp_context.c b/src/gallium/drivers/softpipe/sp_context.c index 316020cba63..de4c6c18e7f 100644 --- a/src/gallium/drivers/softpipe/sp_context.c +++ b/src/gallium/drivers/softpipe/sp_context.c @@ -328,8 +328,12 @@ struct pipe_context *softpipe_create( struct pipe_winsys *pipe_winsys, draw_set_rasterize_stage(softpipe->draw, softpipe->setup); } - /* enable aaline stage */ + /* plug in AA line/point stages */ draw_install_aaline_stage(softpipe->draw, &softpipe->pipe); + draw_install_aapoint_stage(softpipe->draw, &softpipe->pipe); + + /* sp_prim_setup can do wide points (don't convert to quads) */ + draw_convert_wide_points(softpipe->draw, FALSE); sp_init_surface_functions(softpipe); |