| /************************************************************************** |
| * |
| * 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 <keith@tungstengraphics.com> |
| * Brian Paul |
| */ |
| |
| #include "pipe/p_util.h" |
| #include "draw_private.h" |
| #include "draw_context.h" |
| #include "draw_vertex.h" |
| |
| #include "x86/rtasm/x86sse.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 |
| |
| typedef void (XSTDCALL *codegen_function) ( |
| const struct tgsi_exec_vector *input, |
| struct tgsi_exec_vector *output, |
| float (*constant)[4], |
| struct tgsi_exec_vector *temporary ); |
| |
| |
| /** |
| * 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->state->output_semantic_name[0] |
| == TGSI_SEMANTIC_POSITION); |
| |
| #ifdef DEBUG |
| memset( &machine, 0, sizeof( machine ) ); |
| #endif |
| |
| /* init machine state */ |
| tgsi_exec_machine_init(&machine, |
| draw->vertex_shader->state->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->state->executable != NULL ) { |
| codegen_function func = (codegen_function) draw->vertex_shader->state->executable; |
| func( |
| machine.Inputs, |
| machine.Outputs, |
| machine.Consts, |
| machine.Temps ); |
| } |
| 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. |
| * Skip 0 since we just did it above. |
| * Subtract two because of the VERTEX_HEADER, CLIP_POS attribs. |
| */ |
| for (slot = 1; slot < draw->vertex_info.num_attribs - 2; 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]; |
| /* |
| printf("output %d: %f %f %f %f\n", slot, |
| vOut[j]->data[slot][0], |
| vOut[j]->data[slot][1], |
| vOut[j]->data[slot][2], |
| vOut[j]->data[slot][3]); |
| */ |
| } |
| } /* 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; |
| |
| // fprintf(stderr, " q(%d) ", draw->vs.queue_nr ); |
| |
| /* 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; |
| } |
| |
| |
| void * |
| draw_create_vertex_shader(struct draw_context *draw, |
| const struct pipe_shader_state *shader) |
| { |
| struct draw_vertex_shader *vs = calloc(1, sizeof(struct draw_vertex_shader)); |
| |
| vs->state = shader; |
| #if defined(__i386__) || defined(__386__) |
| x86_init_func(&vs->sse2_program); |
| |
| tgsi_emit_sse2(shader->tokens, &vs->sse2_program); |
| |
| ((struct pipe_shader_state*)(vs->state))->executable = |
| x86_get_func(&vs->sse2_program); |
| #endif |
| |
| return vs; |
| } |
| |
| void draw_bind_vertex_shader(struct draw_context *draw, |
| void *vcso) |
| { |
| draw_flush(draw); |
| draw->vertex_shader = (struct draw_vertex_shader*)(vcso); |
| } |
| |
| void draw_delete_vertex_shader(struct draw_context *draw, |
| void *vcso) |
| { |
| struct draw_vertex_shader *vs = (struct draw_vertex_shader*)(vcso); |
| #if defined(__i386__) || defined(__386__) |
| x86_release_func(&vs->sse2_program); |
| #endif |
| free(vcso); |
| } |
| |
| |
| |