From 874b9265601fcc05b1e32e2be029f3ac6a966c97 Mon Sep 17 00:00:00 2001 From: Keith Whitwell Date: Mon, 27 Aug 2007 19:30:11 +0100 Subject: Split out vertex shader/cache/fetch functionality from draw_prim.c --- src/mesa/pipe/draw/draw_vertex_shader.c | 203 ++++++++++++++++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 src/mesa/pipe/draw/draw_vertex_shader.c (limited to 'src/mesa/pipe/draw/draw_vertex_shader.c') diff --git a/src/mesa/pipe/draw/draw_vertex_shader.c b/src/mesa/pipe/draw/draw_vertex_shader.c new file mode 100644 index 0000000000..8effc74cbe --- /dev/null +++ b/src/mesa/pipe/draw/draw_vertex_shader.c @@ -0,0 +1,203 @@ +/************************************************************************** + * + * Copyright 2007 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. + * + **************************************************************************/ + + /* + * Authors: + * Keith Whitwell + * Brian Paul + */ + +#include "pipe/p_util.h" +#include "draw_private.h" +#include "draw_context.h" +#include "draw_vertex.h" + +#include "pipe/tgsi/exec/tgsi_core.h" + +static INLINE unsigned +compute_clipmask(float cx, float cy, float cz, float cw) +{ + unsigned mask = 0; + + if (-cx + cw < 0) mask |= CLIP_RIGHT_BIT; + if ( cx + cw < 0) mask |= CLIP_LEFT_BIT; + if (-cy + cw < 0) mask |= CLIP_TOP_BIT; + if ( cy + cw < 0) mask |= CLIP_BOTTOM_BIT; + if (-cz + cw < 0) mask |= CLIP_FAR_BIT; + if ( cz + cw < 0) mask |= CLIP_NEAR_BIT; + + return mask; +} + + + + +#if !defined(XSTDCALL) +#if defined(WIN32) +#define XSTDCALL __stdcall +#else +#define XSTDCALL +#endif +#endif + +#if defined(USE_X86_ASM) || defined(SLANG_X86) +typedef void (XSTDCALL *sse2_function)( + const struct tgsi_exec_vector *input, + struct tgsi_exec_vector *output, + float (*constant)[4], + struct tgsi_exec_vector *temporary ); +#endif + +/** + * Transform vertices with the current vertex program/shader + * Up to four vertices can be shaded at a time. + * \param vbuffer the input vertex data + * \param elts indexes of four input vertices + * \param count number of vertices to shade [1..4] + * \param vOut array of pointers to four output vertices + */ +static void +run_vertex_program(struct draw_context *draw, + unsigned elts[4], unsigned count, + struct vertex_header *vOut[]) +{ + struct tgsi_exec_machine machine; + unsigned int j; + + ALIGN16_DECL(struct tgsi_exec_vector, inputs, PIPE_ATTRIB_MAX); + ALIGN16_DECL(struct tgsi_exec_vector, outputs, PIPE_ATTRIB_MAX); + const float *scale = draw->viewport.scale; + const float *trans = draw->viewport.translate; + + assert(count <= 4); + assert(draw->vertex_shader.outputs_written & (1 << TGSI_ATTRIB_POS)); + +#ifdef DEBUG + memset( &machine, 0, sizeof( machine ) ); +#endif + + /* init machine state */ + tgsi_exec_machine_init(&machine, + draw->vertex_shader.tokens, + PIPE_MAX_SAMPLERS, + NULL /*samplers*/ ); + + /* Consts does not require 16 byte alignment. */ + machine.Consts = (float (*)[4]) draw->mapped_constants; + + machine.Inputs = ALIGN16_ASSIGN(inputs); + machine.Outputs = ALIGN16_ASSIGN(outputs); + + draw_vertex_fetch( draw, &machine, elts, count ); + + + /* run shader */ + if( draw->vertex_shader.executable != NULL ) { +#if defined(USE_X86_ASM) || defined(SLANG_X86) + sse2_function func = (sse2_function) draw->vertex_shader.executable; + func( + machine.Inputs, + machine.Outputs, + machine.Consts, + machine.Temps ); +#else + assert( 0 ); +#endif + } + else { + tgsi_exec_machine_run( &machine ); + } + + + /* store machine results */ + for (j = 0; j < count; j++) { + unsigned slot; + float x, y, z, w; + + /* Handle attr[0] (position) specially: */ + x = vOut[j]->clip[0] = machine.Outputs[0].xyzw[0].f[j]; + y = vOut[j]->clip[1] = machine.Outputs[0].xyzw[1].f[j]; + z = vOut[j]->clip[2] = machine.Outputs[0].xyzw[2].f[j]; + w = vOut[j]->clip[3] = machine.Outputs[0].xyzw[3].f[j]; + + vOut[j]->clipmask = compute_clipmask(x, y, z, w) | draw->user_clipmask; + vOut[j]->edgeflag = 1; + + /* divide by w */ + w = 1.0f / w; + x *= w; + y *= w; + z *= w; + + /* Viewport mapping */ + vOut[j]->data[0][0] = x * scale[0] + trans[0]; + vOut[j]->data[0][1] = y * scale[1] + trans[1]; + vOut[j]->data[0][2] = z * scale[2] + trans[2]; + vOut[j]->data[0][3] = w; + + /* remaining attributes are packed into sequential post-transform + * vertex attrib slots. + */ + for (slot = 1; slot < draw->vertex_info.num_attribs; slot++) { + vOut[j]->data[slot][0] = machine.Outputs[slot].xyzw[0].f[j]; + vOut[j]->data[slot][1] = machine.Outputs[slot].xyzw[1].f[j]; + vOut[j]->data[slot][2] = machine.Outputs[slot].xyzw[2].f[j]; + vOut[j]->data[slot][3] = machine.Outputs[slot].xyzw[3].f[j]; + } + } /* loop over vertices */ +} + + +/** + * Called by the draw module when the vertx cache needs to be flushed. + * This involves running the vertex shader. + */ +void draw_vertex_shader_queue_flush( struct draw_context *draw ) +{ + unsigned i, j; + + /* run vertex shader on vertex cache entries, four per invokation */ + for (i = 0; i < draw->vs.queue_nr; i += 4) { + struct vertex_header *dests[4]; + unsigned elts[4]; + int n; + + for (j = 0; j < 4; j++) { + elts[j] = draw->vs.queue[i + j].elt; + dests[j] = draw->vs.queue[i + j].dest; + } + + n = MIN2(4, draw->vs.queue_nr - i); + assert(n > 0); + assert(n <= 4); + + run_vertex_program(draw, elts, n, dests); + } + + draw->vs.queue_nr = 0; +} + -- cgit v1.2.3