/* * Copyright (c) 2014 Scott Mansell * Copyright © 2014 Broadcom * * 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, sublicense, * 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 NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS 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. */ #include "util/u_prim.h" #include "util/u_format.h" #include "util/u_pack_color.h" #include "util/u_upload_mgr.h" #include "indices/u_primconvert.h" #include "vc4_context.h" #include "vc4_resource.h" static void vc4_get_draw_cl_space(struct vc4_context *vc4, int vert_count) { /* The SW-5891 workaround may cause us to emit multiple shader recs * and draw packets. */ int num_draws = DIV_ROUND_UP(vert_count, 65535) + 1; /* Binner gets our packet state -- vc4_emit.c contents, * and the primitive itself. */ cl_ensure_space(&vc4->bcl, 256 + (VC4_PACKET_GL_ARRAY_PRIMITIVE_SIZE + VC4_PACKET_GL_SHADER_STATE_SIZE) * num_draws); /* Nothing for rcl -- that's covered by vc4_context.c */ /* shader_rec gets up to 12 dwords of reloc handles plus a maximally * sized shader_rec (104 bytes base for 8 vattrs plus 32 bytes of * vattr stride). */ cl_ensure_space(&vc4->shader_rec, (12 * sizeof(uint32_t) + 104 + 8 * 32) * num_draws); /* Uniforms are covered by vc4_write_uniforms(). */ /* There could be up to 16 textures per stage, plus misc other * pointers. */ cl_ensure_space(&vc4->bo_handles, (2 * 16 + 20) * sizeof(uint32_t)); cl_ensure_space(&vc4->bo_pointers, (2 * 16 + 20) * sizeof(struct vc4_bo *)); } /** * Does the initial bining command list setup for drawing to a given FBO. */ static void vc4_start_draw(struct vc4_context *vc4, int vert_count) { if (vc4->needs_flush) return; vc4_get_draw_cl_space(vc4, 0); struct vc4_cl_out *bcl = cl_start(&vc4->bcl); // Tile state data is 48 bytes per tile, I think it can be thrown away // as soon as binning is finished. cl_u8(&bcl, VC4_PACKET_TILE_BINNING_MODE_CONFIG); cl_u32(&bcl, 0); /* tile alloc addr, filled by kernel */ cl_u32(&bcl, 0); /* tile alloc size, filled by kernel */ cl_u32(&bcl, 0); /* tile state addr, filled by kernel */ cl_u8(&bcl, vc4->draw_tiles_x); cl_u8(&bcl, vc4->draw_tiles_y); /* Other flags are filled by kernel. */ cl_u8(&bcl, vc4->msaa ? VC4_BIN_CONFIG_MS_MODE_4X : 0); /* START_TILE_BINNING resets the statechange counters in the hardware, * which are what is used when a primitive is binned to a tile to * figure out what new state packets need to be written to that tile's * command list. */ cl_u8(&bcl, VC4_PACKET_START_TILE_BINNING); /* Reset the current compressed primitives format. This gets modified * by VC4_PACKET_GL_INDEXED_PRIMITIVE and * VC4_PACKET_GL_ARRAY_PRIMITIVE, so it needs to be reset at the start * of every tile. */ cl_u8(&bcl, VC4_PACKET_PRIMITIVE_LIST_FORMAT); cl_u8(&bcl, (VC4_PRIMITIVE_LIST_FORMAT_16_INDEX | VC4_PRIMITIVE_LIST_FORMAT_TYPE_TRIANGLES)); vc4->needs_flush = true; vc4->draw_calls_queued++; vc4->draw_width = vc4->framebuffer.width; vc4->draw_height = vc4->framebuffer.height; cl_end(&vc4->bcl, bcl); } static void vc4_update_shadow_textures(struct pipe_context *pctx, struct vc4_texture_stateobj *stage_tex) { for (int i = 0; i < stage_tex->num_textures; i++) { struct pipe_sampler_view *view = stage_tex->textures[i]; if (!view) continue; struct vc4_resource *rsc = vc4_resource(view->texture); if (rsc->shadow_parent) vc4_update_shadow_baselevel_texture(pctx, view); } } static void vc4_emit_gl_shader_state(struct vc4_context *vc4, const struct pipe_draw_info *info, uint32_t extra_index_bias) { /* VC4_DIRTY_VTXSTATE */ struct vc4_vertex_stateobj *vtx = vc4->vtx; /* VC4_DIRTY_VTXBUF */ struct vc4_vertexbuf_stateobj *vertexbuf = &vc4->vertexbuf; /* The simulator throws a fit if VS or CS don't read an attribute, so * we emit a dummy read. */ uint32_t num_elements_emit = MAX2(vtx->num_elements, 1); /* Emit the shader record. */ struct vc4_cl_out *shader_rec = cl_start_shader_reloc(&vc4->shader_rec, 3 + num_elements_emit); /* VC4_DIRTY_PRIM_MODE | VC4_DIRTY_RASTERIZER */ cl_u16(&shader_rec, VC4_SHADER_FLAG_ENABLE_CLIPPING | VC4_SHADER_FLAG_FS_SINGLE_THREAD | ((info->mode == PIPE_PRIM_POINTS && vc4->rasterizer->base.point_size_per_vertex) ? VC4_SHADER_FLAG_VS_POINT_SIZE : 0)); /* VC4_DIRTY_COMPILED_FS */ cl_u8(&shader_rec, 0); /* fs num uniforms (unused) */ cl_u8(&shader_rec, vc4->prog.fs->num_inputs); cl_reloc(vc4, &vc4->shader_rec, &shader_rec, vc4->prog.fs->bo, 0); cl_u32(&shader_rec, 0); /* UBO offset written by kernel */ /* VC4_DIRTY_COMPILED_VS */ cl_u16(&shader_rec, 0); /* vs num uniforms */ cl_u8(&shader_rec, vc4->prog.vs->vattrs_live); cl_u8(&shader_rec, vc4->prog.vs->vattr_offsets[8]); cl_reloc(vc4, &vc4->shader_rec, &shader_rec, vc4->prog.vs->bo, 0); cl_u32(&shader_rec, 0); /* UBO offset written by kernel */ /* VC4_DIRTY_COMPILED_CS */ cl_u16(&shader_rec, 0); /* cs num uniforms */ cl_u8(&shader_rec, vc4->prog.cs->vattrs_live); cl_u8(&shader_rec, vc4->prog.cs->vattr_offsets[8]); cl_reloc(vc4, &vc4->shader_rec, &shader_rec, vc4->prog.cs->bo, 0); cl_u32(&shader_rec, 0); /* UBO offset written by kernel */ uint32_t max_index = 0xffff; for (int i = 0; i < vtx->num_elements; i++) { struct pipe_vertex_element *elem = &vtx->pipe[i]; struct pipe_vertex_buffer *vb = &vertexbuf->vb[elem->vertex_buffer_index]; struct vc4_resource *rsc = vc4_resource(vb->buffer); /* not vc4->dirty tracked: vc4->last_index_bias */ uint32_t offset = (vb->buffer_offset + elem->src_offset + vb->stride * (info->index_bias + extra_index_bias)); uint32_t vb_size = rsc->bo->size - offset; uint32_t elem_size = util_format_get_blocksize(elem->src_format); cl_reloc(vc4, &vc4->shader_rec, &shader_rec, rsc->bo, offset); cl_u8(&shader_rec, elem_size - 1); cl_u8(&shader_rec, vb->stride); cl_u8(&shader_rec, vc4->prog.vs->vattr_offsets[i]); cl_u8(&shader_rec, vc4->prog.cs->vattr_offsets[i]); if (vb->stride > 0) { max_index = MIN2(max_index, (vb_size - elem_size) / vb->stride); } } if (vtx->num_elements == 0) { assert(num_elements_emit == 1); struct vc4_bo *bo = vc4_bo_alloc(vc4->screen, 4096, "scratch VBO"); cl_reloc(vc4, &vc4->shader_rec, &shader_rec, bo, 0); cl_u8(&shader_rec, 16 - 1); /* element size */ cl_u8(&shader_rec, 0); /* stride */ cl_u8(&shader_rec, 0); /* VS VPM offset */ cl_u8(&shader_rec, 0); /* CS VPM offset */ vc4_bo_unreference(&bo); } cl_end(&vc4->shader_rec, shader_rec); struct vc4_cl_out *bcl = cl_start(&vc4->bcl); /* the actual draw call. */ cl_u8(&bcl, VC4_PACKET_GL_SHADER_STATE); assert(vtx->num_elements <= 8); /* Note that number of attributes == 0 in the packet means 8 * attributes. This field also contains the offset into shader_rec. */ cl_u32(&bcl, num_elements_emit & 0x7); cl_end(&vc4->bcl, bcl); vc4_write_uniforms(vc4, vc4->prog.fs, &vc4->constbuf[PIPE_SHADER_FRAGMENT], &vc4->fragtex); vc4_write_uniforms(vc4, vc4->prog.vs, &vc4->constbuf[PIPE_SHADER_VERTEX], &vc4->verttex); vc4_write_uniforms(vc4, vc4->prog.cs, &vc4->constbuf[PIPE_SHADER_VERTEX], &vc4->verttex); vc4->last_index_bias = info->index_bias + extra_index_bias; vc4->max_index = max_index; vc4->shader_rec_count++; } /** * HW-2116 workaround: Flush the batch before triggering the hardware state * counter wraparound behavior. * * State updates are tracked by a global counter which increments at the first * state update after a draw or a START_BINNING. Tiles can then have their * state updated at draw time with a set of cheap checks for whether the * state's copy of the global counter matches the global counter the last time * that state was written to the tile. * * The state counters are relatively small and wrap around quickly, so you * could get false negatives for needing to update a particular state in the * tile. To avoid this, the hardware attempts to write all of the state in * the tile at wraparound time. This apparently is broken, so we just flush * everything before that behavior is triggered. A batch flush is sufficient * to get our current contents drawn and reset the counters to 0. * * Note that we can't just use VC4_PACKET_FLUSH_ALL, because that caps the * tiles with VC4_PACKET_RETURN_FROM_LIST. */ static void vc4_hw_2116_workaround(struct pipe_context *pctx) { struct vc4_context *vc4 = vc4_context(pctx); if (vc4->draw_calls_queued == 0x1ef0) { perf_debug("Flushing batch due to HW-2116 workaround " "(too many draw calls per scene\n"); vc4_flush(pctx); } } static void vc4_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info) { struct vc4_context *vc4 = vc4_context(pctx); if (info->mode >= PIPE_PRIM_QUADS) { util_primconvert_save_index_buffer(vc4->primconvert, &vc4->indexbuf); util_primconvert_save_rasterizer_state(vc4->primconvert, &vc4->rasterizer->base); util_primconvert_draw_vbo(vc4->primconvert, info); perf_debug("Fallback conversion for %d %s vertices\n", info->count, u_prim_name(info->mode)); return; } /* Before setting up the draw, do any fixup blits necessary. */ vc4_update_shadow_textures(pctx, &vc4->verttex); vc4_update_shadow_textures(pctx, &vc4->fragtex); vc4_hw_2116_workaround(pctx); vc4_get_draw_cl_space(vc4, info->count); if (vc4->prim_mode != info->mode) { vc4->prim_mode = info->mode; vc4->dirty |= VC4_DIRTY_PRIM_MODE; } vc4_start_draw(vc4, info->count); vc4_update_compiled_shaders(vc4, info->mode); uint32_t start_draw_calls_queued = vc4->draw_calls_queued; vc4_emit_state(pctx); if ((vc4->dirty & (VC4_DIRTY_VTXBUF | VC4_DIRTY_VTXSTATE | VC4_DIRTY_PRIM_MODE | VC4_DIRTY_RASTERIZER | VC4_DIRTY_COMPILED_CS | VC4_DIRTY_COMPILED_VS | VC4_DIRTY_COMPILED_FS | vc4->prog.cs->uniform_dirty_bits | vc4->prog.vs->uniform_dirty_bits | vc4->prog.fs->uniform_dirty_bits)) || vc4->last_index_bias != info->index_bias) { vc4_emit_gl_shader_state(vc4, info, 0); } vc4->dirty = 0; /* Note that the primitive type fields match with OpenGL/gallium * definitions, up to but not including QUADS. */ struct vc4_cl_out *bcl = cl_start(&vc4->bcl); if (info->indexed) { uint32_t offset = vc4->indexbuf.offset; uint32_t index_size = vc4->indexbuf.index_size; struct pipe_resource *prsc; if (vc4->indexbuf.index_size == 4) { prsc = vc4_get_shadow_index_buffer(pctx, &vc4->indexbuf, info->count, &offset); index_size = 2; } else { if (vc4->indexbuf.user_buffer) { prsc = NULL; u_upload_data(vc4->uploader, 0, info->count * index_size, 4, vc4->indexbuf.user_buffer, &offset, &prsc); } else { prsc = vc4->indexbuf.buffer; } } struct vc4_resource *rsc = vc4_resource(prsc); cl_start_reloc(&vc4->bcl, &bcl, 1); cl_u8(&bcl, VC4_PACKET_GL_INDEXED_PRIMITIVE); cl_u8(&bcl, info->mode | (index_size == 2 ? VC4_INDEX_BUFFER_U16: VC4_INDEX_BUFFER_U8)); cl_u32(&bcl, info->count); cl_reloc(vc4, &vc4->bcl, &bcl, rsc->bo, offset); cl_u32(&bcl, vc4->max_index); if (vc4->indexbuf.index_size == 4 || vc4->indexbuf.user_buffer) pipe_resource_reference(&prsc, NULL); } else { uint32_t count = info->count; uint32_t start = info->start; uint32_t extra_index_bias = 0; while (count) { uint32_t this_count = count; uint32_t step = count; static const uint32_t max_verts = 65535; /* GFXH-515 / SW-5891: The binner emits 16 bit indices * for drawarrays, which means that if start + count > * 64k it would truncate the top bits. Work around * this by emitting a limited number of primitives at * a time and reemitting the shader state pointing * farther down the vertex attribute arrays. * * To do this properly for line loops or trifans, we'd * need to make a new VB containing the first vertex * plus whatever remainder. */ if (extra_index_bias) { cl_end(&vc4->bcl, bcl); vc4_emit_gl_shader_state(vc4, info, extra_index_bias); bcl = cl_start(&vc4->bcl); } if (start + count > max_verts) { switch (info->mode) { case PIPE_PRIM_POINTS: this_count = step = max_verts; break; case PIPE_PRIM_LINES: this_count = step = max_verts - (max_verts % 2); break; case PIPE_PRIM_LINE_STRIP: this_count = max_verts; step = max_verts - 1; break; case PIPE_PRIM_LINE_LOOP: this_count = max_verts; step = max_verts - 1; debug_warn_once("unhandled line loop " "looping behavior with " ">65535 verts\n"); break; case PIPE_PRIM_TRIANGLES: this_count = step = max_verts - (max_verts % 3); break; case PIPE_PRIM_TRIANGLE_STRIP: this_count = max_verts; step = max_verts - 2; break; default: debug_warn_once("unhandled primitive " "max vert count, truncating\n"); this_count = step = max_verts; } } cl_u8(&bcl, VC4_PACKET_GL_ARRAY_PRIMITIVE); cl_u8(&bcl, info->mode); cl_u32(&bcl, this_count); cl_u32(&bcl, start); count -= step; extra_index_bias += start + step; start = 0; } } cl_end(&vc4->bcl, bcl); /* No flushes of the job should have happened between when we started * emitting state for our draw and when we just emitted our draw's * primitives. */ assert(start_draw_calls_queued == vc4->draw_calls_queued); if (vc4->zsa && vc4->zsa->base.depth.enabled) { vc4->resolve |= PIPE_CLEAR_DEPTH; } if (vc4->zsa && vc4->zsa->base.stencil[0].enabled) vc4->resolve |= PIPE_CLEAR_STENCIL; vc4->resolve |= PIPE_CLEAR_COLOR0; if (vc4_debug & VC4_DEBUG_ALWAYS_FLUSH) vc4_flush(pctx); } static uint32_t pack_rgba(enum pipe_format format, const float *rgba) { union util_color uc; util_pack_color(rgba, format, &uc); if (util_format_get_blocksize(format) == 2) return uc.us; else return uc.ui[0]; } static void vc4_clear(struct pipe_context *pctx, unsigned buffers, const union pipe_color_union *color, double depth, unsigned stencil) { struct vc4_context *vc4 = vc4_context(pctx); /* We can't flag new buffers for clearing once we've queued draws. We * could avoid this by using the 3d engine to clear. */ if (vc4->draw_calls_queued) { perf_debug("Flushing rendering to process new clear.\n"); vc4_flush(pctx); } if (buffers & PIPE_CLEAR_COLOR0) { vc4->clear_color[0] = vc4->clear_color[1] = pack_rgba(vc4->framebuffer.cbufs[0]->format, color->f); } if (buffers & PIPE_CLEAR_DEPTH) { /* Though the depth buffer is stored with Z in the high 24, * for this field we just need to store it in the low 24. */ vc4->clear_depth = util_pack_z(PIPE_FORMAT_Z24X8_UNORM, depth); } if (buffers & PIPE_CLEAR_STENCIL) vc4->clear_stencil = stencil; vc4->draw_min_x = 0; vc4->draw_min_y = 0; vc4->draw_max_x = vc4->framebuffer.width; vc4->draw_max_y = vc4->framebuffer.height; vc4->cleared |= buffers; vc4->resolve |= buffers; vc4_start_draw(vc4, 0); } static void vc4_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps, const union pipe_color_union *color, unsigned x, unsigned y, unsigned w, unsigned h) { fprintf(stderr, "unimpl: clear RT\n"); } static void vc4_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps, unsigned buffers, double depth, unsigned stencil, unsigned x, unsigned y, unsigned w, unsigned h) { fprintf(stderr, "unimpl: clear DS\n"); } void vc4_draw_init(struct pipe_context *pctx) { pctx->draw_vbo = vc4_draw_vbo; pctx->clear = vc4_clear; pctx->clear_render_target = vc4_clear_render_target; pctx->clear_depth_stencil = vc4_clear_depth_stencil; }