| /************************************************************************** |
| * |
| * 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> |
| */ |
| |
| #include "draw/draw_context.h" |
| #include "draw/draw_private.h" |
| #include "draw/draw_pt.h" |
| #include "draw/draw_vs.h" |
| #include "tgsi/tgsi_dump.h" |
| #include "util/u_math.h" |
| #include "util/u_prim.h" |
| |
| static unsigned trim( unsigned count, unsigned first, unsigned incr ) |
| { |
| if (count < first) |
| return 0; |
| return count - (count - first) % incr; |
| } |
| |
| |
| |
| /* Overall we split things into: |
| * - frontend -- prepare fetch_elts, draw_elts - eg vcache |
| * - middle -- fetch, shade, cliptest, viewport |
| * - pipeline -- the prim pipeline: clipping, wide lines, etc |
| * - backend -- the vbuf_render provided by the driver. |
| */ |
| static boolean |
| draw_pt_arrays(struct draw_context *draw, |
| unsigned prim, |
| unsigned start, |
| unsigned count) |
| { |
| struct draw_pt_front_end *frontend = NULL; |
| struct draw_pt_middle_end *middle = NULL; |
| unsigned opt = 0; |
| |
| /* Sanitize primitive length: |
| */ |
| { |
| unsigned first, incr; |
| draw_pt_split_prim(prim, &first, &incr); |
| count = trim(count, first, incr); |
| if (count < first) |
| return TRUE; |
| } |
| |
| if (!draw->force_passthrough) { |
| if (!draw->render) { |
| opt |= PT_PIPELINE; |
| } |
| |
| if (draw_need_pipeline(draw, |
| draw->rasterizer, |
| prim)) { |
| opt |= PT_PIPELINE; |
| } |
| |
| if (!draw->bypass_clipping && !draw->pt.test_fse) { |
| opt |= PT_CLIPTEST; |
| } |
| |
| if (!draw->rasterizer->bypass_vs_clip_and_viewport) { |
| opt |= PT_SHADE; |
| } |
| } |
| |
| if (opt == 0) |
| middle = draw->pt.middle.fetch_emit; |
| else if (opt == PT_SHADE && !draw->pt.no_fse) |
| middle = draw->pt.middle.fetch_shade_emit; |
| else |
| middle = draw->pt.middle.general; |
| |
| |
| /* Pick the right frontend |
| */ |
| if (draw->pt.user.elts || (opt & PT_PIPELINE)) { |
| frontend = draw->pt.front.vcache; |
| } else { |
| frontend = draw->pt.front.varray; |
| } |
| |
| frontend->prepare( frontend, prim, middle, opt ); |
| |
| frontend->run(frontend, |
| draw_pt_elt_func(draw), |
| draw_pt_elt_ptr(draw, start), |
| count); |
| |
| frontend->finish( frontend ); |
| |
| return TRUE; |
| } |
| |
| |
| boolean draw_pt_init( struct draw_context *draw ) |
| { |
| draw->pt.test_fse = debug_get_bool_option("DRAW_FSE", FALSE); |
| draw->pt.no_fse = debug_get_bool_option("DRAW_NO_FSE", FALSE); |
| |
| draw->pt.front.vcache = draw_pt_vcache( draw ); |
| if (!draw->pt.front.vcache) |
| return FALSE; |
| |
| draw->pt.front.varray = draw_pt_varray(draw); |
| if (!draw->pt.front.varray) |
| return FALSE; |
| |
| draw->pt.middle.fetch_emit = draw_pt_fetch_emit( draw ); |
| if (!draw->pt.middle.fetch_emit) |
| return FALSE; |
| |
| draw->pt.middle.fetch_shade_emit = draw_pt_middle_fse( draw ); |
| if (!draw->pt.middle.fetch_shade_emit) |
| return FALSE; |
| |
| draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit( draw ); |
| if (!draw->pt.middle.general) |
| return FALSE; |
| |
| return TRUE; |
| } |
| |
| |
| void draw_pt_destroy( struct draw_context *draw ) |
| { |
| if (draw->pt.middle.general) { |
| draw->pt.middle.general->destroy( draw->pt.middle.general ); |
| draw->pt.middle.general = NULL; |
| } |
| |
| if (draw->pt.middle.fetch_emit) { |
| draw->pt.middle.fetch_emit->destroy( draw->pt.middle.fetch_emit ); |
| draw->pt.middle.fetch_emit = NULL; |
| } |
| |
| if (draw->pt.middle.fetch_shade_emit) { |
| draw->pt.middle.fetch_shade_emit->destroy( draw->pt.middle.fetch_shade_emit ); |
| draw->pt.middle.fetch_shade_emit = NULL; |
| } |
| |
| if (draw->pt.front.vcache) { |
| draw->pt.front.vcache->destroy( draw->pt.front.vcache ); |
| draw->pt.front.vcache = NULL; |
| } |
| |
| if (draw->pt.front.varray) { |
| draw->pt.front.varray->destroy( draw->pt.front.varray ); |
| draw->pt.front.varray = NULL; |
| } |
| } |
| |
| |
| /** |
| * Debug- print the first 'count' vertices. |
| */ |
| static void |
| draw_print_arrays(struct draw_context *draw, uint prim, int start, uint count) |
| { |
| uint i; |
| |
| debug_printf("Draw arrays(prim = %u, start = %u, count = %u)\n", |
| prim, start, count); |
| |
| for (i = 0; i < count; i++) { |
| uint ii = 0; |
| uint j; |
| |
| if (draw->pt.user.elts) { |
| /* indexed arrays */ |
| switch (draw->pt.user.eltSize) { |
| case 1: |
| { |
| const ubyte *elem = (const ubyte *) draw->pt.user.elts; |
| ii = elem[start + i]; |
| } |
| break; |
| case 2: |
| { |
| const ushort *elem = (const ushort *) draw->pt.user.elts; |
| ii = elem[start + i]; |
| } |
| break; |
| case 4: |
| { |
| const uint *elem = (const uint *) draw->pt.user.elts; |
| ii = elem[start + i]; |
| } |
| break; |
| default: |
| assert(0); |
| } |
| debug_printf("Element[%u + %u] -> Vertex %u:\n", start, i, ii); |
| } |
| else { |
| /* non-indexed arrays */ |
| ii = start + i; |
| debug_printf("Vertex %u:\n", ii); |
| } |
| |
| for (j = 0; j < draw->pt.nr_vertex_elements; j++) { |
| uint buf = draw->pt.vertex_element[j].vertex_buffer_index; |
| ubyte *ptr = (ubyte *) draw->pt.user.vbuffer[buf]; |
| ptr += draw->pt.vertex_buffer[buf].stride * ii; |
| ptr += draw->pt.vertex_element[j].src_offset; |
| |
| debug_printf(" Attr %u: ", j); |
| switch (draw->pt.vertex_element[j].src_format) { |
| case PIPE_FORMAT_R32_FLOAT: |
| { |
| float *v = (float *) ptr; |
| debug_printf("%f @ %p\n", v[0], (void *) v); |
| } |
| break; |
| case PIPE_FORMAT_R32G32_FLOAT: |
| { |
| float *v = (float *) ptr; |
| debug_printf("%f %f @ %p\n", v[0], v[1], (void *) v); |
| } |
| break; |
| case PIPE_FORMAT_R32G32B32_FLOAT: |
| { |
| float *v = (float *) ptr; |
| debug_printf("%f %f %f @ %p\n", v[0], v[1], v[2], (void *) v); |
| } |
| break; |
| case PIPE_FORMAT_R32G32B32A32_FLOAT: |
| { |
| float *v = (float *) ptr; |
| debug_printf("%f %f %f %f @ %p\n", v[0], v[1], v[2], v[3], |
| (void *) v); |
| } |
| break; |
| default: |
| debug_printf("other format (fix me)\n"); |
| ; |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Draw vertex arrays |
| * This is the main entrypoint into the drawing module. |
| * \param prim one of PIPE_PRIM_x |
| * \param start index of first vertex to draw |
| * \param count number of vertices to draw |
| */ |
| void |
| draw_arrays(struct draw_context *draw, unsigned prim, |
| unsigned start, unsigned count) |
| { |
| unsigned reduced_prim = u_reduced_prim(prim); |
| if (reduced_prim != draw->reduced_prim) { |
| draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); |
| draw->reduced_prim = reduced_prim; |
| } |
| |
| if (0) |
| draw_print_arrays(draw, prim, start, MIN2(count, 20)); |
| |
| #if 0 |
| { |
| int i; |
| debug_printf("draw_arrays(prim=%u start=%u count=%u):\n", |
| prim, start, count); |
| tgsi_dump(draw->vs.vertex_shader->state.tokens, 0); |
| debug_printf("Elements:\n"); |
| for (i = 0; i < draw->pt.nr_vertex_elements; i++) { |
| debug_printf(" format=%s comps=%u\n", |
| pf_name(draw->pt.vertex_element[i].src_format), |
| draw->pt.vertex_element[i].nr_components); |
| } |
| debug_printf("Buffers:\n"); |
| for (i = 0; i < draw->pt.nr_vertex_buffers; i++) { |
| debug_printf(" stride=%u offset=%u ptr=%p\n", |
| draw->pt.vertex_buffer[i].stride, |
| draw->pt.vertex_buffer[i].buffer_offset, |
| draw->pt.user.vbuffer[i]); |
| } |
| } |
| #endif |
| |
| /* drawing done here: */ |
| draw_pt_arrays(draw, prim, start, count); |
| } |