| /************************************************************************** |
| * |
| * 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_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 perpares 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; |
| } |
| |
| frontend->run( frontend, start, count ); |
| |
| return TRUE; |
| } |
| |
| void draw_pt_flush( struct draw_context *draw, unsigned 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_BACKEND)) |
| draw->pt.frontend = NULL; |
| } |
| } |
| |
| |
| |
| 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_index_buffer() and draw_set_mapped_index_buffer() |
| * functions 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; |
| |
| 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; |
| |
| |
| /* |
| * 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, info->count); |
| } |
| } |
| } |
