/************************************************************************** * * 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 */ #include "draw/draw_context.h" #include "draw/draw_gs.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" #include "util/u_format.h" #include "util/u_draw.h" DEBUG_GET_ONCE_BOOL_OPTION(draw_fse, "DRAW_FSE", FALSE) DEBUG_GET_ONCE_BOOL_OPTION(draw_no_fse, "DRAW_NO_FSE", FALSE) /* Overall we split things into: * - frontend -- prepare fetch_elts, draw_elts - eg vsplit * - 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 = draw_pt_trim_count(count, first, incr); if (count < first) return TRUE; } if (!draw->force_passthrough) { unsigned gs_out_prim = (draw->gs.geometry_shader ? draw->gs.geometry_shader->output_primitive : prim); if (!draw->render) { opt |= PT_PIPELINE; } if (draw_need_pipeline(draw, draw->rasterizer, gs_out_prim)) { opt |= PT_PIPELINE; } if ((draw->clip_xy || draw->clip_z || draw->clip_user) && !draw->pt.test_fse) { opt |= PT_CLIPTEST; } opt |= PT_SHADE; } if (draw->pt.middle.llvm) { middle = draw->pt.middle.llvm; } else { 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; } frontend = draw->pt.frontend; if (frontend ) { if (draw->pt.prim != prim || draw->pt.opt != opt) { /* In certain conditions switching primitives requires us to flush * and validate the different stages. One example is when smooth * lines are active but first drawn with triangles and then with * lines. */ draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE ); frontend = NULL; } else if (draw->pt.eltSize != draw->pt.user.eltSize) { /* Flush draw state if eltSize changed. * This could be improved so only the frontend is flushed since it * converts all indices to ushorts and the fetch part of the middle * always prepares both linear and indexed. */ frontend->flush( frontend, DRAW_FLUSH_STATE_CHANGE ); frontend = NULL; } } if (!frontend) { frontend = draw->pt.front.vsplit; frontend->prepare( frontend, prim, middle, opt ); draw->pt.frontend = frontend; draw->pt.eltSize = draw->pt.user.eltSize; draw->pt.prim = prim; draw->pt.opt = opt; } if (draw->pt.rebind_parameters) { /* update constants, viewport dims, clip planes, etc */ middle->bind_parameters(middle); draw->pt.rebind_parameters = FALSE; } frontend->run( frontend, start, count ); return TRUE; } void draw_pt_flush( struct draw_context *draw, unsigned flags ) { assert(flags); if (draw->pt.frontend) { draw->pt.frontend->flush( draw->pt.frontend, flags ); /* don't prepare if we only are flushing the backend */ if (flags & DRAW_FLUSH_STATE_CHANGE) draw->pt.frontend = NULL; } if (flags & DRAW_FLUSH_PARAMETER_CHANGE) { draw->pt.rebind_parameters = TRUE; } } boolean draw_pt_init( struct draw_context *draw ) { draw->pt.test_fse = debug_get_option_draw_fse(); draw->pt.no_fse = debug_get_option_draw_no_fse(); draw->pt.front.vsplit = draw_pt_vsplit(draw); if (!draw->pt.front.vsplit) 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; #if HAVE_LLVM if (draw->llvm) draw->pt.middle.llvm = draw_pt_fetch_pipeline_or_emit_llvm( draw ); #endif return TRUE; } void draw_pt_destroy( struct draw_context *draw ) { if (draw->pt.middle.llvm) { draw->pt.middle.llvm->destroy( draw->pt.middle.llvm ); draw->pt.middle.llvm = NULL; } 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.vsplit) { draw->pt.front.vsplit->destroy( draw->pt.front.vsplit ); draw->pt.front.vsplit = 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.eltSize) { /* 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); return; } ii += draw->pt.user.eltBias; debug_printf("Element[%u + %u] + %i -> Vertex %u:\n", start, i, draw->pt.user.eltBias, 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]; if (draw->pt.vertex_element[j].instance_divisor) { ii = draw->instance_id / draw->pt.vertex_element[j].instance_divisor; } ptr += draw->pt.vertex_buffer[buf].buffer_offset; 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("R %f @ %p\n", v[0], (void *) v); } break; case PIPE_FORMAT_R32G32_FLOAT: { float *v = (float *) ptr; debug_printf("RG %f %f @ %p\n", v[0], v[1], (void *) v); } break; case PIPE_FORMAT_R32G32B32_FLOAT: { float *v = (float *) ptr; debug_printf("RGB %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("RGBA %f %f %f %f @ %p\n", v[0], v[1], v[2], v[3], (void *) v); } break; case PIPE_FORMAT_B8G8R8A8_UNORM: { ubyte *u = (ubyte *) ptr; debug_printf("BGRA %d %d %d %d @ %p\n", u[0], u[1], u[2], u[3], (void *) u); } break; default: debug_printf("other format %s (fix me)\n", util_format_name(draw->pt.vertex_element[j].src_format)); } } } } /** Helper code for below */ #define PRIM_RESTART_LOOP(elements) \ do { \ for (i = start; i < end; i++) { \ if (elements[i] == info->restart_index) { \ if (cur_count > 0) { \ /* draw elts up to prev pos */ \ draw_pt_arrays(draw, prim, cur_start, cur_count); \ } \ /* begin new prim at next elt */ \ cur_start = i + 1; \ cur_count = 0; \ } \ else { \ cur_count++; \ } \ } \ if (cur_count > 0) { \ draw_pt_arrays(draw, prim, cur_start, cur_count); \ } \ } while (0) /** * For drawing prims with primitive restart enabled. * Scan for restart indexes and draw the runs of elements/vertices between * the restarts. */ static void draw_pt_arrays_restart(struct draw_context *draw, const struct pipe_draw_info *info) { const unsigned prim = info->mode; const unsigned start = info->start; const unsigned count = info->count; const unsigned end = start + count; unsigned i, cur_start, cur_count; assert(info->primitive_restart); if (draw->pt.user.eltSize) { /* indexed prims (draw_elements) */ cur_start = start; cur_count = 0; switch (draw->pt.user.eltSize) { case 1: { const ubyte *elt_ub = (const ubyte *) draw->pt.user.elts; PRIM_RESTART_LOOP(elt_ub); } break; case 2: { const ushort *elt_us = (const ushort *) draw->pt.user.elts; PRIM_RESTART_LOOP(elt_us); } break; case 4: { const uint *elt_ui = (const uint *) draw->pt.user.elts; PRIM_RESTART_LOOP(elt_ui); } break; default: assert(0 && "bad eltSize in draw_arrays()"); } } else { /* Non-indexed prims (draw_arrays). * Primitive restart should have been handled in the state tracker. */ draw_pt_arrays(draw, prim, start, count); } } /** * Non-instanced drawing. * \sa draw_arrays_instanced */ void draw_arrays(struct draw_context *draw, unsigned prim, unsigned start, unsigned count) { draw_arrays_instanced(draw, prim, start, count, 0, 1); } /** * Instanced drawing. * \sa draw_vbo */ void draw_arrays_instanced(struct draw_context *draw, unsigned mode, unsigned start, unsigned count, unsigned startInstance, unsigned instanceCount) { struct pipe_draw_info info; util_draw_init_info(&info); info.mode = mode; info.start = start; info.count = count; info.start_instance = startInstance; info.instance_count = instanceCount; info.min_index = start; info.max_index = start + count - 1; draw_vbo(draw, &info); } /** * Draw vertex arrays. * This is the main entrypoint into the drawing module. If drawing an indexed * primitive, the draw_set_indexes() function should have already been called * to specify the element/index buffer information. */ void draw_vbo(struct draw_context *draw, const struct pipe_draw_info *info) { unsigned instance; unsigned index_limit; unsigned count; assert(info->instance_count > 0); if (info->indexed) assert(draw->pt.user.elts); draw->pt.user.eltBias = info->index_bias; draw->pt.user.min_index = info->min_index; draw->pt.user.max_index = info->max_index; draw->pt.user.eltSize = info->indexed ? draw->pt.user.eltSizeIB : 0; if (0) debug_printf("draw_vbo(mode=%u start=%u count=%u):\n", info->mode, info->start, info->count); if (0) tgsi_dump(draw->vs.vertex_shader->state.tokens, 0); if (0) { unsigned int i; debug_printf("Elements:\n"); for (i = 0; i < draw->pt.nr_vertex_elements; i++) { debug_printf(" %u: src_offset=%u inst_div=%u vbuf=%u format=%s\n", i, draw->pt.vertex_element[i].src_offset, draw->pt.vertex_element[i].instance_divisor, draw->pt.vertex_element[i].vertex_buffer_index, util_format_name(draw->pt.vertex_element[i].src_format)); } debug_printf("Buffers:\n"); for (i = 0; i < draw->pt.nr_vertex_buffers; i++) { debug_printf(" %u: stride=%u offset=%u ptr=%p\n", i, draw->pt.vertex_buffer[i].stride, draw->pt.vertex_buffer[i].buffer_offset, draw->pt.user.vbuffer[i]); } } if (0) draw_print_arrays(draw, info->mode, info->start, MIN2(info->count, 20)); index_limit = util_draw_max_index(draw->pt.vertex_buffer, draw->pt.vertex_element, draw->pt.nr_vertex_elements, info); if (index_limit == 0) { /* one of the buffers is too small to do any valid drawing */ debug_warning("draw: VBO too small to draw anything\n"); return; } draw->pt.max_index = index_limit - 1; count = info->count; if (count == 0) { if (info->count_from_stream_output) count = draw->pt.max_index + 1; } /* * TODO: We could use draw->pt.max_index to further narrow * the min_index/max_index hints given by the state tracker. */ for (instance = 0; instance < info->instance_count; instance++) { draw->instance_id = instance + info->start_instance; if (info->primitive_restart) { draw_pt_arrays_restart(draw, info); } else { draw_pt_arrays(draw, info->mode, info->start, count); } } }