/* * Copyright 2009 Corbin Simpson * Copyright 2010 Marek Olšák * * 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 * on 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 * THE AUTHOR(S) AND/OR THEIR 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. */ /* r300_render: Vertex and index buffer primitive emission. Contains both * HW TCL fastpath rendering, and SW TCL Draw-assisted rendering. */ #include "draw/draw_context.h" #include "draw/draw_vbuf.h" #include "util/u_inlines.h" #include "util/u_format.h" #include "util/u_memory.h" #include "util/u_upload_mgr.h" #include "util/u_prim.h" #include "r300_cs.h" #include "r300_context.h" #include "r300_screen_buffer.h" #include "r300_emit.h" #include "r300_reg.h" #include "r300_state_derived.h" #include static uint32_t r300_translate_primitive(unsigned prim) { switch (prim) { case PIPE_PRIM_POINTS: return R300_VAP_VF_CNTL__PRIM_POINTS; case PIPE_PRIM_LINES: return R300_VAP_VF_CNTL__PRIM_LINES; case PIPE_PRIM_LINE_LOOP: return R300_VAP_VF_CNTL__PRIM_LINE_LOOP; case PIPE_PRIM_LINE_STRIP: return R300_VAP_VF_CNTL__PRIM_LINE_STRIP; case PIPE_PRIM_TRIANGLES: return R300_VAP_VF_CNTL__PRIM_TRIANGLES; case PIPE_PRIM_TRIANGLE_STRIP: return R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP; case PIPE_PRIM_TRIANGLE_FAN: return R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN; case PIPE_PRIM_QUADS: return R300_VAP_VF_CNTL__PRIM_QUADS; case PIPE_PRIM_QUAD_STRIP: return R300_VAP_VF_CNTL__PRIM_QUAD_STRIP; case PIPE_PRIM_POLYGON: return R300_VAP_VF_CNTL__PRIM_POLYGON; default: return 0; } } static uint32_t r300_provoking_vertex_fixes(struct r300_context *r300, unsigned mode) { struct r300_rs_state* rs = (struct r300_rs_state*)r300->rs_state.state; uint32_t color_control = rs->color_control; /* By default (see r300_state.c:r300_create_rs_state) color_control is * initialized to provoking the first vertex. * * Triangle fans must be reduced to the second vertex, not the first, in * Gallium flatshade-first mode, as per the GL spec. * (http://www.opengl.org/registry/specs/ARB/provoking_vertex.txt) * * Quads never provoke correctly in flatshade-first mode. The first * vertex is never considered as provoking, so only the second, third, * and fourth vertices can be selected, and both "third" and "last" modes * select the fourth vertex. This is probably due to D3D lacking quads. * * Similarly, polygons reduce to the first, not the last, vertex, when in * "last" mode, and all other modes start from the second vertex. * * ~ C. */ if (rs->rs.flatshade_first) { switch (mode) { case PIPE_PRIM_TRIANGLE_FAN: color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_SECOND; break; case PIPE_PRIM_QUADS: case PIPE_PRIM_QUAD_STRIP: case PIPE_PRIM_POLYGON: color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; break; default: color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_FIRST; break; } } else { color_control |= R300_GA_COLOR_CONTROL_PROVOKING_VERTEX_LAST; } return color_control; } static boolean index_bias_supported(struct r300_context *r300) { return r300->screen->caps.is_r500 && r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); } static void r500_emit_index_bias(struct r300_context *r300, int index_bias) { CS_LOCALS(r300); BEGIN_CS(2); OUT_CS_REG(R500_VAP_INDEX_OFFSET, (index_bias & 0xFFFFFF) | (index_bias < 0 ? 1<<24 : 0)); END_CS; } /* This function splits the index bias value into two parts: * - buffer_offset: the value that can be safely added to buffer offsets * in r300_emit_aos (it must yield a positive offset when added to * a vertex buffer offset) * - index_offset: the value that must be manually subtracted from indices * in an index buffer to achieve negative offsets. */ static void r300_split_index_bias(struct r300_context *r300, int index_bias, int *buffer_offset, int *index_offset) { struct pipe_vertex_buffer *vb, *vbufs = r300->vertex_buffer; struct pipe_vertex_element *velem = r300->velems->velem; unsigned i, size; int max_neg_bias; if (index_bias < 0) { /* See how large index bias we may subtract. We must be careful * here because negative buffer offsets are not allowed * by the DRM API. */ max_neg_bias = INT_MAX; for (i = 0; i < r300->velems->count; i++) { vb = &vbufs[velem[i].vertex_buffer_index]; size = (vb->buffer_offset + velem[i].src_offset) / vb->stride; max_neg_bias = MIN2(max_neg_bias, size); } /* Now set the minimum allowed value. */ *buffer_offset = MAX2(-max_neg_bias, index_bias); } else { /* A positive index bias is OK. */ *buffer_offset = index_bias; } *index_offset = index_bias - *buffer_offset; } enum r300_prepare_flags { PREP_FIRST_DRAW = (1 << 0), /* call emit_dirty_state and friends? */ PREP_VALIDATE_VBOS = (1 << 1), /* validate VBOs? */ PREP_EMIT_AOS = (1 << 2), /* call emit_aos? */ PREP_EMIT_AOS_SWTCL = (1 << 3), /* call emit_aos_swtcl? */ PREP_INDEXED = (1 << 4) /* is this draw_elements? */ }; /** * Check if the requested number of dwords is available in the CS and * if not, flush. Then validate buffers and emit dirty state. * \param r300 The context. * \param flags See r300_prepare_flags. * \param index_buffer The index buffer to validate. The parameter may be NULL. * \param cs_dwords The number of dwords to reserve in CS. * \param aos_offset The offset passed to emit_aos. * \param index_bias The index bias to emit. * \param end_cs_dwords The number of free dwords which must be available * at the end of CS after drawing in case the CS space * management is performed by a draw_* function manually. * The parameter may be NULL. */ static void r300_prepare_for_rendering(struct r300_context *r300, enum r300_prepare_flags flags, struct pipe_resource *index_buffer, unsigned cs_dwords, int aos_offset, int index_bias, unsigned *end_cs_dwords) { unsigned end_dwords = 0; boolean flushed = FALSE; boolean first_draw = flags & PREP_FIRST_DRAW; boolean emit_aos = flags & PREP_EMIT_AOS; boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL; boolean indexed = flags & PREP_INDEXED; boolean hw_index_bias = index_bias_supported(r300); /* Add dirty state, index offset, and AOS. */ if (first_draw) { cs_dwords += r300_get_num_dirty_dwords(r300); if (hw_index_bias) cs_dwords += 2; /* emit_index_offset */ if (emit_aos) cs_dwords += 55; /* emit_aos */ if (emit_aos_swtcl) cs_dwords += 7; /* emit_aos_swtcl */ } /* Emitted in flush. */ end_dwords += 26; /* emit_query_end */ cs_dwords += end_dwords; /* Reserve requested CS space. */ if (!r300_check_cs(r300, cs_dwords)) { r300->context.flush(&r300->context, 0, NULL); flushed = TRUE; } /* Validate buffers and emit dirty state if needed. */ if (first_draw || flushed) { r300_emit_buffer_validate(r300, flags & PREP_VALIDATE_VBOS, index_buffer); r300_emit_dirty_state(r300); if (hw_index_bias) { if (r300->screen->caps.has_tcl) r500_emit_index_bias(r300, index_bias); else r500_emit_index_bias(r300, 0); } if (emit_aos) r300_emit_aos(r300, aos_offset, indexed); if (emit_aos_swtcl) r300_emit_aos_swtcl(r300, indexed); } if (end_cs_dwords) *end_cs_dwords = end_dwords; } static boolean immd_is_good_idea(struct r300_context *r300, unsigned count) { struct pipe_vertex_element* velem; struct pipe_vertex_buffer* vbuf; boolean checked[PIPE_MAX_ATTRIBS] = {0}; unsigned vertex_element_count = r300->velems->count; unsigned i, vbi; if (DBG_ON(r300, DBG_NO_IMMD)) { return FALSE; } if (r300->draw) { return FALSE; } if (count > 10) { return FALSE; } /* We shouldn't map buffers referenced by CS, busy buffers, * and ones placed in VRAM. */ /* XXX Check for VRAM buffers. */ for (i = 0; i < vertex_element_count; i++) { velem = &r300->velems->velem[i]; vbi = velem->vertex_buffer_index; if (!checked[vbi]) { vbuf = &r300->vertex_buffer[vbi]; if (r300_buffer_is_referenced(&r300->context, vbuf->buffer, R300_REF_CS | R300_REF_HW)) { /* It's a very bad idea to map it... */ return FALSE; } checked[vbi] = TRUE; } } return TRUE; } /***************************************************************************** * The emission of draw packets for r500. Older GPUs may use these functions * * after resolving fallback issues (e.g. stencil ref two-sided). * ****************************************************************************/ static void r300_emit_draw_arrays_immediate(struct r300_context *r300, unsigned mode, unsigned start, unsigned count) { struct pipe_vertex_element* velem; struct pipe_vertex_buffer* vbuf; unsigned vertex_element_count = r300->velems->count; unsigned i, v, vbi, dw, elem_offset, dwords; /* Size of the vertex, in dwords. */ unsigned vertex_size = 0; /* Offsets of the attribute, in dwords, from the start of the vertex. */ unsigned offset[PIPE_MAX_ATTRIBS]; /* Size of the vertex element, in dwords. */ unsigned size[PIPE_MAX_ATTRIBS]; /* Stride to the same attrib in the next vertex in the vertex buffer, * in dwords. */ unsigned stride[PIPE_MAX_ATTRIBS] = {0}; /* Mapped vertex buffers. */ uint32_t* map[PIPE_MAX_ATTRIBS] = {0}; struct pipe_transfer* transfer[PIPE_MAX_ATTRIBS] = {NULL}; CS_LOCALS(r300); /* Calculate the vertex size, offsets, strides etc. and map the buffers. */ for (i = 0; i < vertex_element_count; i++) { velem = &r300->velems->velem[i]; offset[i] = velem->src_offset / 4; size[i] = r300->velems->hw_format_size[i] / 4; vertex_size += size[i]; vbi = velem->vertex_buffer_index; /* Map the buffer. */ if (!map[vbi]) { vbuf = &r300->vertex_buffer[vbi]; map[vbi] = (uint32_t*)pipe_buffer_map(&r300->context, vbuf->buffer, PIPE_TRANSFER_READ, &transfer[vbi]); map[vbi] += vbuf->buffer_offset / 4; stride[vbi] = vbuf->stride / 4; } } dwords = 9 + count * vertex_size; r300_prepare_for_rendering(r300, PREP_FIRST_DRAW, NULL, dwords, 0, 0, NULL); BEGIN_CS(dwords); OUT_CS_REG(R300_GA_COLOR_CONTROL, r300_provoking_vertex_fixes(r300, mode)); OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size); OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); OUT_CS(count - 1); OUT_CS(0); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, count * vertex_size); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (count << 16) | r300_translate_primitive(mode)); /* Emit vertices. */ for (v = 0; v < count; v++) { for (i = 0; i < vertex_element_count; i++) { velem = &r300->velems->velem[i]; vbi = velem->vertex_buffer_index; elem_offset = offset[i] + stride[vbi] * (v + start); for (dw = 0; dw < size[i]; dw++) { OUT_CS(map[vbi][elem_offset + dw]); } } } END_CS; /* Unmap buffers. */ for (i = 0; i < vertex_element_count; i++) { vbi = r300->velems->velem[i].vertex_buffer_index; if (map[vbi]) { vbuf = &r300->vertex_buffer[vbi]; pipe_buffer_unmap(&r300->context, vbuf->buffer, transfer[vbi]); map[vbi] = NULL; } } } static void r300_emit_draw_arrays(struct r300_context *r300, unsigned mode, unsigned count) { boolean alt_num_verts = count > 65535; CS_LOCALS(r300); if (count >= (1 << 24)) { fprintf(stderr, "r300: Got a huge number of vertices: %i, " "refusing to render.\n", count); return; } BEGIN_CS(7 + (alt_num_verts ? 2 : 0)); if (alt_num_verts) { OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); } OUT_CS_REG(R300_GA_COLOR_CONTROL, r300_provoking_vertex_fixes(r300, mode)); OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); OUT_CS(count - 1); OUT_CS(0); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | r300_translate_primitive(mode) | (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); END_CS; } static void r300_emit_draw_elements(struct r300_context *r300, struct pipe_resource* indexBuffer, unsigned indexSize, unsigned minIndex, unsigned maxIndex, unsigned mode, unsigned start, unsigned count) { uint32_t count_dwords; uint32_t offset_dwords = indexSize * start / sizeof(uint32_t); boolean alt_num_verts = count > 65535; CS_LOCALS(r300); if (count >= (1 << 24)) { fprintf(stderr, "r300: Got a huge number of vertices: %i, " "refusing to render.\n", count); return; } maxIndex = MIN2(maxIndex, r300->vertex_buffer_max_index); DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, min %u max %u\n", count, minIndex, maxIndex); BEGIN_CS(13 + (alt_num_verts ? 2 : 0)); if (alt_num_verts) { OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); } OUT_CS_REG(R300_GA_COLOR_CONTROL, r300_provoking_vertex_fixes(r300, mode)); OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); OUT_CS(maxIndex); OUT_CS(minIndex); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 0); if (indexSize == 4) { count_dwords = count; OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | R300_VAP_VF_CNTL__INDEX_SIZE_32bit | r300_translate_primitive(mode) | (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); } else { count_dwords = (count + 1) / 2; OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | r300_translate_primitive(mode) | (alt_num_verts ? R500_VAP_VF_CNTL__USE_ALT_NUM_VERTS : 0)); } /* INDX_BUFFER is a truly special packet3. * Unlike most other packet3, where the offset is after the count, * the order is reversed, so the relocation ends up carrying the * size of the indexbuf instead of the offset. */ OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2); OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2) | (0 << R300_INDX_BUFFER_SKIP_SHIFT)); OUT_CS(offset_dwords << 2); OUT_CS_BUF_RELOC(indexBuffer, count_dwords, r300_buffer(indexBuffer)->domain, 0, 0); END_CS; } /* This is the fast-path drawing & emission for HW TCL. */ static void r300_draw_range_elements(struct pipe_context* pipe, struct pipe_resource* indexBuffer, unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex, unsigned mode, unsigned start, unsigned count) { struct r300_context* r300 = r300_context(pipe); struct pipe_resource* orgIndexBuffer = indexBuffer; boolean alt_num_verts = r300->screen->caps.is_r500 && count > 65536 && r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); unsigned short_count; int buffer_offset = 0, index_offset = 0; /* for index bias emulation */ boolean translate = FALSE; if (r300->skip_rendering) { return; } if (!u_trim_pipe_prim(mode, &count)) { return; } /* Set up fallback for incompatible vertex layout if needed. */ if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) { r300_begin_vertex_translate(r300); translate = TRUE; } if (indexBias && !index_bias_supported(r300)) { r300_split_index_bias(r300, indexBias, &buffer_offset, &index_offset); } r300_translate_index_buffer(r300, &indexBuffer, &indexSize, index_offset, &start, count); r300_update_derived_state(r300); r300_upload_index_buffer(r300, &indexBuffer, indexSize, start, count); /* 15 dwords for emit_draw_elements */ r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED, indexBuffer, 15, buffer_offset, indexBias, NULL); u_upload_flush(r300->upload_vb); u_upload_flush(r300->upload_ib); if (alt_num_verts || count <= 65535) { r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex, mode, start, count); } else { do { short_count = MIN2(count, 65534); r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex, mode, start, short_count); start += short_count; count -= short_count; /* 15 dwords for emit_draw_elements */ if (count) { r300_prepare_for_rendering(r300, PREP_VALIDATE_VBOS | PREP_EMIT_AOS | PREP_INDEXED, indexBuffer, 15, buffer_offset, indexBias, NULL); } } while (count); } if (indexBuffer != orgIndexBuffer) { pipe_resource_reference( &indexBuffer, NULL ); } if (translate) { r300_end_vertex_translate(r300); } } /* Simple helpers for context setup. Should probably be moved to util. */ static void r300_draw_elements(struct pipe_context* pipe, struct pipe_resource* indexBuffer, unsigned indexSize, int indexBias, unsigned mode, unsigned start, unsigned count) { struct r300_context *r300 = r300_context(pipe); pipe->draw_range_elements(pipe, indexBuffer, indexSize, indexBias, 0, r300->vertex_buffer_max_index, mode, start, count); } static void r300_draw_arrays(struct pipe_context* pipe, unsigned mode, unsigned start, unsigned count) { struct r300_context* r300 = r300_context(pipe); boolean alt_num_verts = r300->screen->caps.is_r500 && count > 65536 && r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0); unsigned short_count; boolean translate = FALSE; if (r300->skip_rendering) { return; } if (!u_trim_pipe_prim(mode, &count)) { return; } /* Set up fallback for incompatible vertex layout if needed. */ if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) { r300_begin_vertex_translate(r300); translate = TRUE; } r300_update_derived_state(r300); if (immd_is_good_idea(r300, count)) { r300_emit_draw_arrays_immediate(r300, mode, start, count); } else { /* 9 spare dwords for emit_draw_arrays. */ r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9, start, 0, NULL); if (alt_num_verts || count <= 65535) { r300_emit_draw_arrays(r300, mode, count); } else { do { short_count = MIN2(count, 65535); r300_emit_draw_arrays(r300, mode, short_count); start += short_count; count -= short_count; /* 9 spare dwords for emit_draw_arrays. */ if (count) { r300_prepare_for_rendering(r300, PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9, start, 0, NULL); } } while (count); } u_upload_flush(r300->upload_vb); } if (translate) { r300_end_vertex_translate(r300); } } /**************************************************************************** * The rest of this file is for SW TCL rendering only. Please be polite and * * keep these functions separated so that they are easier to locate. ~C. * ***************************************************************************/ /* SW TCL arrays, using Draw. */ static void r300_swtcl_draw_arrays(struct pipe_context* pipe, unsigned mode, unsigned start, unsigned count) { struct r300_context* r300 = r300_context(pipe); struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS]; int i; if (r300->skip_rendering) { return; } if (!u_trim_pipe_prim(mode, &count)) { return; } r300_update_derived_state(r300); for (i = 0; i < r300->vertex_buffer_count; i++) { void* buf = pipe_buffer_map(pipe, r300->vertex_buffer[i].buffer, PIPE_TRANSFER_READ, &vb_transfer[i]); draw_set_mapped_vertex_buffer(r300->draw, i, buf); } draw_set_mapped_element_buffer(r300->draw, 0, 0, NULL); draw_arrays(r300->draw, mode, start, count); /* XXX Not sure whether this is the best fix. * It prevents CS from being rejected and weird assertion failures. */ draw_flush(r300->draw); for (i = 0; i < r300->vertex_buffer_count; i++) { pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, vb_transfer[i]); draw_set_mapped_vertex_buffer(r300->draw, i, NULL); } } /* SW TCL elements, using Draw. */ static void r300_swtcl_draw_range_elements(struct pipe_context* pipe, struct pipe_resource* indexBuffer, unsigned indexSize, int indexBias, unsigned minIndex, unsigned maxIndex, unsigned mode, unsigned start, unsigned count) { struct r300_context* r300 = r300_context(pipe); struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS]; struct pipe_transfer *ib_transfer; int i; void* indices; if (r300->skip_rendering) { return; } if (!u_trim_pipe_prim(mode, &count)) { return; } r300_update_derived_state(r300); for (i = 0; i < r300->vertex_buffer_count; i++) { void* buf = pipe_buffer_map(pipe, r300->vertex_buffer[i].buffer, PIPE_TRANSFER_READ, &vb_transfer[i]); draw_set_mapped_vertex_buffer(r300->draw, i, buf); } indices = pipe_buffer_map(pipe, indexBuffer, PIPE_TRANSFER_READ, &ib_transfer); draw_set_mapped_element_buffer_range(r300->draw, indexSize, indexBias, minIndex, maxIndex, indices); draw_arrays(r300->draw, mode, start, count); /* XXX Not sure whether this is the best fix. * It prevents CS from being rejected and weird assertion failures. */ draw_flush(r300->draw); for (i = 0; i < r300->vertex_buffer_count; i++) { pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, vb_transfer[i]); draw_set_mapped_vertex_buffer(r300->draw, i, NULL); } pipe_buffer_unmap(pipe, indexBuffer, ib_transfer); draw_set_mapped_element_buffer_range(r300->draw, 0, 0, start, start + count - 1, NULL); } /* Object for rendering using Draw. */ struct r300_render { /* Parent class */ struct vbuf_render base; /* Pipe context */ struct r300_context* r300; /* Vertex information */ size_t vertex_size; unsigned prim; unsigned hwprim; /* VBO */ struct pipe_resource* vbo; size_t vbo_size; size_t vbo_offset; size_t vbo_max_used; void * vbo_ptr; struct pipe_transfer *vbo_transfer; }; static INLINE struct r300_render* r300_render(struct vbuf_render* render) { return (struct r300_render*)render; } static const struct vertex_info* r300_render_get_vertex_info(struct vbuf_render* render) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; return &r300->vertex_info; } static boolean r300_render_allocate_vertices(struct vbuf_render* render, ushort vertex_size, ushort count) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; struct pipe_screen* screen = r300->context.screen; size_t size = (size_t)vertex_size * (size_t)count; if (size + r300render->vbo_offset > r300render->vbo_size) { pipe_resource_reference(&r300->vbo, NULL); r300render->vbo = pipe_buffer_create(screen, PIPE_BIND_VERTEX_BUFFER, R300_MAX_DRAW_VBO_SIZE); r300render->vbo_offset = 0; r300render->vbo_size = R300_MAX_DRAW_VBO_SIZE; } r300render->vertex_size = vertex_size; r300->vbo = r300render->vbo; r300->vbo_offset = r300render->vbo_offset; return (r300render->vbo) ? TRUE : FALSE; } static void* r300_render_map_vertices(struct vbuf_render* render) { struct r300_render* r300render = r300_render(render); assert(!r300render->vbo_transfer); r300render->vbo_ptr = pipe_buffer_map(&r300render->r300->context, r300render->vbo, PIPE_TRANSFER_WRITE, &r300render->vbo_transfer); return ((uint8_t*)r300render->vbo_ptr + r300render->vbo_offset); } static void r300_render_unmap_vertices(struct vbuf_render* render, ushort min, ushort max) { struct r300_render* r300render = r300_render(render); struct pipe_context* context = &r300render->r300->context; assert(r300render->vbo_transfer); r300render->vbo_max_used = MAX2(r300render->vbo_max_used, r300render->vertex_size * (max + 1)); pipe_buffer_unmap(context, r300render->vbo, r300render->vbo_transfer); r300render->vbo_transfer = NULL; } static void r300_render_release_vertices(struct vbuf_render* render) { struct r300_render* r300render = r300_render(render); r300render->vbo_offset += r300render->vbo_max_used; r300render->vbo_max_used = 0; } static boolean r300_render_set_primitive(struct vbuf_render* render, unsigned prim) { struct r300_render* r300render = r300_render(render); r300render->prim = prim; r300render->hwprim = r300_translate_primitive(prim); return TRUE; } static void r300_render_draw_arrays(struct vbuf_render* render, unsigned start, unsigned count) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; uint8_t* ptr; unsigned i; unsigned dwords = 6; CS_LOCALS(r300); (void) i; (void) ptr; r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL, NULL, dwords, 0, 0, NULL); DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count); /* Uncomment to dump all VBOs rendered through this interface. * Slow and noisy! ptr = pipe_buffer_map(&r300render->r300->context, r300render->vbo, PIPE_TRANSFER_READ, &r300render->vbo_transfer); for (i = 0; i < count; i++) { printf("r300: Vertex %d\n", i); draw_dump_emitted_vertex(&r300->vertex_info, ptr); ptr += r300->vertex_info.size * 4; printf("\n"); } pipe_buffer_unmap(&r300render->r300->context, r300render->vbo, r300render->vbo_transfer); */ BEGIN_CS(dwords); OUT_CS_REG(R300_GA_COLOR_CONTROL, r300_provoking_vertex_fixes(r300, r300render->prim)); OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, count - 1); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) | r300render->hwprim); END_CS; } static void r300_render_draw_elements(struct vbuf_render* render, const ushort* indices, uint count) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; int i; unsigned end_cs_dwords; unsigned max_index = (r300render->vbo_size - r300render->vbo_offset) / (r300render->r300->vertex_info.size * 4) - 1; unsigned short_count; struct r300_cs_info cs_info; CS_LOCALS(r300); /* Reserve at least 256 dwords. * * Below we manage the CS space manually because there may be more * indices than it can fit in CS. */ r300_prepare_for_rendering(r300, PREP_FIRST_DRAW | PREP_EMIT_AOS_SWTCL | PREP_INDEXED, NULL, 256, 0, 0, &end_cs_dwords); while (count) { r300->rws->get_cs_info(r300->rws, &cs_info); short_count = MIN2(count, (cs_info.free - end_cs_dwords - 6) * 2); BEGIN_CS(6 + (short_count+1)/2); OUT_CS_REG(R300_GA_COLOR_CONTROL, r300_provoking_vertex_fixes(r300, r300render->prim)); OUT_CS_REG(R300_VAP_VF_MAX_VTX_INDX, max_index); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (short_count+1)/2); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (short_count << 16) | r300render->hwprim); for (i = 0; i < short_count-1; i += 2) { OUT_CS(indices[i+1] << 16 | indices[i]); } if (short_count % 2) { OUT_CS(indices[short_count-1]); } END_CS; /* OK now subtract the emitted indices and see if we need to emit * another draw packet. */ indices += short_count; count -= short_count; if (count) { r300_prepare_for_rendering(r300, PREP_EMIT_AOS_SWTCL | PREP_INDEXED, NULL, 256, 0, 0, &end_cs_dwords); } } } static void r300_render_destroy(struct vbuf_render* render) { FREE(render); } static struct vbuf_render* r300_render_create(struct r300_context* r300) { struct r300_render* r300render = CALLOC_STRUCT(r300_render); r300render->r300 = r300; /* XXX find real numbers plz */ r300render->base.max_vertex_buffer_bytes = 128 * 1024; r300render->base.max_indices = 16 * 1024; r300render->base.get_vertex_info = r300_render_get_vertex_info; r300render->base.allocate_vertices = r300_render_allocate_vertices; r300render->base.map_vertices = r300_render_map_vertices; r300render->base.unmap_vertices = r300_render_unmap_vertices; r300render->base.set_primitive = r300_render_set_primitive; r300render->base.draw_elements = r300_render_draw_elements; r300render->base.draw_arrays = r300_render_draw_arrays; r300render->base.release_vertices = r300_render_release_vertices; r300render->base.destroy = r300_render_destroy; r300render->vbo = NULL; r300render->vbo_size = 0; r300render->vbo_offset = 0; return &r300render->base; } struct draw_stage* r300_draw_stage(struct r300_context* r300) { struct vbuf_render* render; struct draw_stage* stage; render = r300_render_create(r300); if (!render) { return NULL; } stage = draw_vbuf_stage(r300->draw, render); if (!stage) { render->destroy(render); return NULL; } draw_set_render(r300->draw, render); return stage; } void r300_init_render_functions(struct r300_context *r300) { /* Set generic functions. */ r300->context.draw_elements = r300_draw_elements; /* Set draw functions based on presence of HW TCL. */ if (r300->screen->caps.has_tcl) { r300->context.draw_arrays = r300_draw_arrays; r300->context.draw_range_elements = r300_draw_range_elements; } else { r300->context.draw_arrays = r300_swtcl_draw_arrays; r300->context.draw_range_elements = r300_swtcl_draw_range_elements; } /* Plug in the two-sided stencil reference value fallback if needed. */ if (!r300->screen->caps.is_r500) r300_plug_in_stencil_ref_fallback(r300); }