/* * 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 #define IMMD_DWORDS 32 static uint32_t r300_translate_primitive(unsigned prim) { static const int prim_conv[] = { R300_VAP_VF_CNTL__PRIM_POINTS, R300_VAP_VF_CNTL__PRIM_LINES, R300_VAP_VF_CNTL__PRIM_LINE_LOOP, R300_VAP_VF_CNTL__PRIM_LINE_STRIP, R300_VAP_VF_CNTL__PRIM_TRIANGLES, R300_VAP_VF_CNTL__PRIM_TRIANGLE_STRIP, R300_VAP_VF_CNTL__PRIM_TRIANGLE_FAN, R300_VAP_VF_CNTL__PRIM_QUADS, R300_VAP_VF_CNTL__PRIM_QUAD_STRIP, R300_VAP_VF_CNTL__PRIM_POLYGON, -1, -1, -1, -1 }; unsigned hwprim = prim_conv[prim]; assert(hwprim != -1); return hwprim; } 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; } 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; } static void r300_emit_draw_init(struct r300_context *r300, unsigned mode, unsigned max_index) { CS_LOCALS(r300); assert(max_index < (1 << 24)); BEGIN_CS(5); 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(max_index); OUT_CS(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_vertex_arrays (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_EMIT_STATES = (1 << 0), /* call emit_dirty_state and friends? */ PREP_VALIDATE_VBOS = (1 << 1), /* validate VBOs? */ PREP_EMIT_VARRAYS = (1 << 2), /* call emit_vertex_arrays? */ PREP_EMIT_VARRAYS_SWTCL = (1 << 3), /* call emit_vertex_arrays_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. * \param r300 The context. * \param flags See r300_prepare_flags. * \param cs_dwords The number of dwords to reserve in CS. * \return TRUE if the CS was flushed */ static boolean r300_reserve_cs_dwords(struct r300_context *r300, enum r300_prepare_flags flags, unsigned cs_dwords) { boolean flushed = FALSE; boolean emit_states = flags & PREP_EMIT_STATES; boolean emit_vertex_arrays = flags & PREP_EMIT_VARRAYS; boolean emit_vertex_arrays_swtcl = flags & PREP_EMIT_VARRAYS_SWTCL; /* Add dirty state, index offset, and AOS. */ if (emit_states) cs_dwords += r300_get_num_dirty_dwords(r300); if (r300->screen->caps.is_r500) cs_dwords += 2; /* emit_index_offset */ if (emit_vertex_arrays) cs_dwords += 55; /* emit_vertex_arrays */ if (emit_vertex_arrays_swtcl) cs_dwords += 7; /* emit_vertex_arrays_swtcl */ cs_dwords += r300_get_num_cs_end_dwords(r300); /* Reserve requested CS space. */ if (!r300->rws->cs_check_space(r300->cs, cs_dwords)) { r300_flush(&r300->context, RADEON_FLUSH_ASYNC, NULL); flushed = TRUE; } return flushed; } /** * 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 buffer_offset The offset passed to emit_vertex_arrays. * \param index_bias The index bias to emit. * \param instance_id Index of instance to render * \return TRUE if rendering should be skipped */ static boolean r300_emit_states(struct r300_context *r300, enum r300_prepare_flags flags, struct pipe_resource *index_buffer, int buffer_offset, int index_bias, int instance_id) { boolean emit_states = flags & PREP_EMIT_STATES; boolean emit_vertex_arrays = flags & PREP_EMIT_VARRAYS; boolean emit_vertex_arrays_swtcl = flags & PREP_EMIT_VARRAYS_SWTCL; boolean indexed = flags & PREP_INDEXED; boolean validate_vbos = flags & PREP_VALIDATE_VBOS; /* Validate buffers and emit dirty state if needed. */ if (emit_states || (emit_vertex_arrays && validate_vbos)) { if (!r300_emit_buffer_validate(r300, validate_vbos, index_buffer)) { fprintf(stderr, "r300: CS space validation failed. " "(not enough memory?) Skipping rendering.\n"); return FALSE; } } if (emit_states) r300_emit_dirty_state(r300); if (r300->screen->caps.is_r500) { if (r300->screen->caps.has_tcl) r500_emit_index_bias(r300, index_bias); else r500_emit_index_bias(r300, 0); } if (emit_vertex_arrays && (r300->vertex_arrays_dirty || r300->vertex_arrays_indexed != indexed || r300->vertex_arrays_offset != buffer_offset || r300->vertex_arrays_instance_id != instance_id)) { r300_emit_vertex_arrays(r300, buffer_offset, indexed, instance_id); r300->vertex_arrays_dirty = FALSE; r300->vertex_arrays_indexed = indexed; r300->vertex_arrays_offset = buffer_offset; r300->vertex_arrays_instance_id = instance_id; } if (emit_vertex_arrays_swtcl) r300_emit_vertex_arrays_swtcl(r300, indexed); return TRUE; } /** * 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 buffer_offset The offset passed to emit_vertex_arrays. * \param index_bias The index bias to emit. * \param instance_id The instance to render. * \return TRUE if rendering should be skipped */ static boolean r300_prepare_for_rendering(struct r300_context *r300, enum r300_prepare_flags flags, struct pipe_resource *index_buffer, unsigned cs_dwords, int buffer_offset, int index_bias, int instance_id) { /* Make sure there is enough space in the command stream and emit states. */ if (r300_reserve_cs_dwords(r300, flags, cs_dwords)) flags |= PREP_EMIT_STATES; return r300_emit_states(r300, flags, index_buffer, buffer_offset, index_bias, instance_id); } static boolean immd_is_good_idea(struct r300_context *r300, unsigned count) { if (DBG_ON(r300, DBG_NO_IMMD)) { return FALSE; } if (count * r300->velems->vertex_size_dwords > IMMD_DWORDS) { return FALSE; } /* Buffers can only be used for read by r300 (except query buffers, but * those can't be bound by a state tracker as vertex buffers). */ return TRUE; } /***************************************************************************** * The HWTCL draw functions. * ****************************************************************************/ static void r300_draw_arrays_immediate(struct r300_context *r300, const struct pipe_draw_info *info) { struct pipe_vertex_element* velem; struct pipe_vertex_buffer* vbuf; unsigned vertex_element_count = r300->velems->count; unsigned i, v, vbi; /* Size of the vertex, in dwords. */ unsigned vertex_size = r300->velems->vertex_size_dwords; /* The number of dwords for this draw operation. */ unsigned dwords = 4 + info->count * vertex_size; /* 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]; /* Mapped vertex buffers. */ uint32_t* map[PIPE_MAX_ATTRIBS] = {0}; uint32_t* mapelem[PIPE_MAX_ATTRIBS]; CS_LOCALS(r300); if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES, NULL, dwords, 0, 0, -1)) return; /* Calculate the vertex size, offsets, strides etc. and map the buffers. */ for (i = 0; i < vertex_element_count; i++) { velem = &r300->velems->velem[i]; size[i] = r300->velems->format_size[i] / 4; vbi = velem->vertex_buffer_index; vbuf = &r300->vertex_buffer[vbi]; stride[i] = vbuf->stride / 4; /* Map the buffer. */ if (!map[vbi]) { map[vbi] = (uint32_t*)r300->rws->buffer_map( r300_resource(vbuf->buffer.resource)->buf, r300->cs, PIPE_TRANSFER_READ | PIPE_TRANSFER_UNSYNCHRONIZED); map[vbi] += (vbuf->buffer_offset / 4) + stride[i] * info->start; } mapelem[i] = map[vbi] + (velem->src_offset / 4); } r300_emit_draw_init(r300, info->mode, info->count-1); BEGIN_CS(dwords); OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, info->count * vertex_size); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (info->count << 16) | r300_translate_primitive(info->mode)); /* Emit vertices. */ for (v = 0; v < info->count; v++) { for (i = 0; i < vertex_element_count; i++) { OUT_CS_TABLE(&mapelem[i][stride[i] * v], size[i]); } } END_CS; } 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; } r300_emit_draw_init(r300, mode, count-1); BEGIN_CS(2 + (alt_num_verts ? 2 : 0)); if (alt_num_verts) { OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); } 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 max_index, unsigned mode, unsigned start, unsigned count, uint16_t *imm_indices3) { uint32_t count_dwords, offset_dwords; 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 (max_index: %i).\n", count, max_index); return; } DBG(r300, DBG_DRAW, "r300: Indexbuf of %u indices, max %u\n", count, max_index); r300_emit_draw_init(r300, mode, max_index); /* If start is odd, render the first triangle with indices embedded * in the command stream. This will increase start by 3 and make it * even. We can then proceed without a fallback. */ if (indexSize == 2 && (start & 1) && mode == PIPE_PRIM_TRIANGLES) { BEGIN_CS(4); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, 2); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (3 << 16) | R300_VAP_VF_CNTL__PRIM_TRIANGLES); OUT_CS(imm_indices3[1] << 16 | imm_indices3[0]); OUT_CS(imm_indices3[2]); END_CS; start += 3; count -= 3; if (!count) return; } offset_dwords = indexSize * start / sizeof(uint32_t); BEGIN_CS(8 + (alt_num_verts ? 2 : 0)); if (alt_num_verts) { OUT_CS_REG(R500_VAP_ALT_NUM_VERTICES, count); } 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)); } 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(count_dwords); OUT_CS_RELOC(r300_resource(indexBuffer)); END_CS; } static void r300_draw_elements_immediate(struct r300_context *r300, const struct pipe_draw_info *info) { const uint8_t *ptr1; const uint16_t *ptr2; const uint32_t *ptr4; unsigned index_size = info->index_size; unsigned i, count_dwords = index_size == 4 ? info->count : (info->count + 1) / 2; CS_LOCALS(r300); /* 19 dwords for r300_draw_elements_immediate. Give up if the function fails. */ if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED, NULL, 2+count_dwords, 0, info->index_bias, -1)) return; r300_emit_draw_init(r300, info->mode, info->max_index); BEGIN_CS(2 + count_dwords); OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, count_dwords); switch (index_size) { case 1: ptr1 = (uint8_t*)info->index.user; ptr1 += info->start; OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) | r300_translate_primitive(info->mode)); if (info->index_bias && !r300->screen->caps.is_r500) { for (i = 0; i < info->count-1; i += 2) OUT_CS(((ptr1[i+1] + info->index_bias) << 16) | (ptr1[i] + info->index_bias)); if (info->count & 1) OUT_CS(ptr1[i] + info->index_bias); } else { for (i = 0; i < info->count-1; i += 2) OUT_CS(((ptr1[i+1]) << 16) | (ptr1[i] )); if (info->count & 1) OUT_CS(ptr1[i]); } break; case 2: ptr2 = (uint16_t*)info->index.user; ptr2 += info->start; OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) | r300_translate_primitive(info->mode)); if (info->index_bias && !r300->screen->caps.is_r500) { for (i = 0; i < info->count-1; i += 2) OUT_CS(((ptr2[i+1] + info->index_bias) << 16) | (ptr2[i] + info->index_bias)); if (info->count & 1) OUT_CS(ptr2[i] + info->index_bias); } else { OUT_CS_TABLE(ptr2, count_dwords); } break; case 4: ptr4 = (uint32_t*)info->index.user; ptr4 += info->start; OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (info->count << 16) | R300_VAP_VF_CNTL__INDEX_SIZE_32bit | r300_translate_primitive(info->mode)); if (info->index_bias && !r300->screen->caps.is_r500) { for (i = 0; i < info->count; i++) OUT_CS(ptr4[i] + info->index_bias); } else { OUT_CS_TABLE(ptr4, count_dwords); } break; } END_CS; } static void r300_draw_elements(struct r300_context *r300, const struct pipe_draw_info *info, int instance_id) { struct pipe_resource *indexBuffer = info->has_user_indices ? NULL : info->index.resource; unsigned indexSize = info->index_size; struct pipe_resource* orgIndexBuffer = indexBuffer; unsigned start = info->start; unsigned count = info->count; boolean alt_num_verts = r300->screen->caps.is_r500 && count > 65536; unsigned short_count; int buffer_offset = 0, index_offset = 0; /* for index bias emulation */ uint16_t indices3[3]; if (info->index_bias && !r300->screen->caps.is_r500) { r300_split_index_bias(r300, info->index_bias, &buffer_offset, &index_offset); } r300_translate_index_buffer(r300, info, &indexBuffer, &indexSize, index_offset, &start, count); /* Fallback for misaligned ushort indices. */ if (indexSize == 2 && (start & 1) && indexBuffer) { /* If we got here, then orgIndexBuffer == indexBuffer. */ uint16_t *ptr = r300->rws->buffer_map(r300_resource(orgIndexBuffer)->buf, r300->cs, PIPE_TRANSFER_READ | PIPE_TRANSFER_UNSYNCHRONIZED); if (info->mode == PIPE_PRIM_TRIANGLES) { memcpy(indices3, ptr + start, 6); } else { /* Copy the mapped index buffer directly to the upload buffer. * The start index will be aligned simply from the fact that * every sub-buffer in the upload buffer is aligned. */ r300_upload_index_buffer(r300, &indexBuffer, indexSize, &start, count, (uint8_t*)ptr); } } else { if (info->has_user_indices) r300_upload_index_buffer(r300, &indexBuffer, indexSize, &start, count, info->index.user); } /* 19 dwords for emit_draw_elements. Give up if the function fails. */ if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED, indexBuffer, 19, buffer_offset, info->index_bias, instance_id)) goto done; if (alt_num_verts || count <= 65535) { r300_emit_draw_elements(r300, indexBuffer, indexSize, info->max_index, info->mode, start, count, indices3); } else { do { /* The maximum must be divisible by 4 and 3, * so that quad and triangle lists are split correctly. * * Strips, loops, and fans won't work. */ short_count = MIN2(count, 65532); r300_emit_draw_elements(r300, indexBuffer, indexSize, info->max_index, info->mode, start, short_count, indices3); start += short_count; count -= short_count; /* 15 dwords for emit_draw_elements */ if (count) { if (!r300_prepare_for_rendering(r300, PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS | PREP_INDEXED, indexBuffer, 19, buffer_offset, info->index_bias, instance_id)) goto done; } } while (count); } done: if (indexBuffer != orgIndexBuffer) { pipe_resource_reference( &indexBuffer, NULL ); } } static void r300_draw_arrays(struct r300_context *r300, const struct pipe_draw_info *info, int instance_id) { boolean alt_num_verts = r300->screen->caps.is_r500 && info->count > 65536; unsigned start = info->start; unsigned count = info->count; unsigned short_count; /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */ if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS, NULL, 9, start, 0, instance_id)) return; if (alt_num_verts || count <= 65535) { r300_emit_draw_arrays(r300, info->mode, count); } else { do { /* The maximum must be divisible by 4 and 3, * so that quad and triangle lists are split correctly. * * Strips, loops, and fans won't work. */ short_count = MIN2(count, 65532); r300_emit_draw_arrays(r300, info->mode, short_count); start += short_count; count -= short_count; /* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */ if (count) { if (!r300_prepare_for_rendering(r300, PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS, NULL, 9, start, 0, instance_id)) return; } } while (count); } } static void r300_draw_arrays_instanced(struct r300_context *r300, const struct pipe_draw_info *info) { int i; for (i = 0; i < info->instance_count; i++) r300_draw_arrays(r300, info, i); } static void r300_draw_elements_instanced(struct r300_context *r300, const struct pipe_draw_info *info) { int i; for (i = 0; i < info->instance_count; i++) r300_draw_elements(r300, info, i); } static unsigned r300_max_vertex_count(struct r300_context *r300) { unsigned i, nr = r300->velems->count; struct pipe_vertex_element *velems = r300->velems->velem; unsigned result = ~0; for (i = 0; i < nr; i++) { struct pipe_vertex_buffer *vb = &r300->vertex_buffer[velems[i].vertex_buffer_index]; unsigned size, max_count, value; /* We're not interested in constant and per-instance attribs. */ if (!vb->buffer.resource || !vb->stride || velems[i].instance_divisor) { continue; } size = vb->buffer.resource->width0; /* Subtract buffer_offset. */ value = vb->buffer_offset; if (value >= size) { return 0; } size -= value; /* Subtract src_offset. */ value = velems[i].src_offset; if (value >= size) { return 0; } size -= value; /* Subtract format_size. */ value = r300->velems->format_size[i]; if (value >= size) { return 0; } size -= value; /* Compute the max count. */ max_count = 1 + size / vb->stride; result = MIN2(result, max_count); } return result; } static void r300_draw_vbo(struct pipe_context* pipe, const struct pipe_draw_info *dinfo) { struct r300_context* r300 = r300_context(pipe); struct pipe_draw_info info = *dinfo; if (r300->skip_rendering || !u_trim_pipe_prim(info.mode, &info.count)) { return; } r300_update_derived_state(r300); /* Draw. */ if (info.index_size) { unsigned max_count = r300_max_vertex_count(r300); if (!max_count) { fprintf(stderr, "r300: Skipping a draw command. There is a buffer " " which is too small to be used for rendering.\n"); return; } if (max_count == ~0) { /* There are no per-vertex vertex elements. Use the hardware maximum. */ max_count = 0xffffff; } info.max_index = max_count - 1; if (info.instance_count <= 1) { if (info.count <= 8 && info.has_user_indices) { r300_draw_elements_immediate(r300, &info); } else { r300_draw_elements(r300, &info, -1); } } else { r300_draw_elements_instanced(r300, &info); } } else { if (info.instance_count <= 1) { if (immd_is_good_idea(r300, info.count)) { r300_draw_arrays_immediate(r300, &info); } else { r300_draw_arrays(r300, &info, -1); } } else { r300_draw_arrays_instanced(r300, &info); } } } /**************************************************************************** * 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 elements, using Draw. */ static void r300_swtcl_draw_vbo(struct pipe_context* pipe, const struct pipe_draw_info *info) { struct r300_context* r300 = r300_context(pipe); if (r300->skip_rendering) { return; } if (!u_trim_pipe_prim(info->mode, (unsigned*)&info->count)) return; if (info->index_size) { draw_set_indexes(r300->draw, info->has_user_indices ? info->index.user : r300_resource(info->index.resource)->malloced_buffer, info->index_size, ~0); } r300_update_derived_state(r300); draw_vbo(r300->draw, info); draw_flush(r300->draw); } /* 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 */ size_t vbo_max_used; uint8_t *vbo_ptr; }; 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 radeon_winsys *rws = r300->rws; size_t size = (size_t)vertex_size * (size_t)count; DBG(r300, DBG_DRAW, "r300: render_allocate_vertices (size: %d)\n", size); if (!r300->vbo || size + r300->draw_vbo_offset > r300->vbo->size) { pb_reference(&r300->vbo, NULL); r300->vbo = NULL; r300render->vbo_ptr = NULL; r300->vbo = rws->buffer_create(rws, MAX2(R300_MAX_DRAW_VBO_SIZE, size), R300_BUFFER_ALIGNMENT, RADEON_DOMAIN_GTT, 0); if (!r300->vbo) { return FALSE; } r300->draw_vbo_offset = 0; r300render->vbo_ptr = rws->buffer_map(r300->vbo, r300->cs, PIPE_TRANSFER_WRITE); } r300render->vertex_size = vertex_size; return TRUE; } static void* r300_render_map_vertices(struct vbuf_render* render) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; DBG(r300, DBG_DRAW, "r300: render_map_vertices\n"); assert(r300render->vbo_ptr); return r300render->vbo_ptr + r300->draw_vbo_offset; } static void r300_render_unmap_vertices(struct vbuf_render* render, ushort min, ushort max) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; DBG(r300, DBG_DRAW, "r300: render_unmap_vertices\n"); r300render->vbo_max_used = MAX2(r300render->vbo_max_used, r300render->vertex_size * (max + 1)); } static void r300_render_release_vertices(struct vbuf_render* render) { struct r300_render* r300render = r300_render(render); struct r300_context* r300 = r300render->r300; DBG(r300, DBG_DRAW, "r300: render_release_vertices\n"); r300->draw_vbo_offset += r300render->vbo_max_used; r300render->vbo_max_used = 0; } static void 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); } 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; assert(start == 0); assert(count < (1 << 16)); DBG(r300, DBG_DRAW, "r300: render_draw_arrays (count: %d)\n", count); if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL, NULL, dwords, 0, 0, -1)) { return; } 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; unsigned max_index = (r300->vbo->size - r300->draw_vbo_offset) / (r300render->r300->vertex_info.size * 4) - 1; struct pipe_resource *index_buffer = NULL; unsigned index_buffer_offset; CS_LOCALS(r300); DBG(r300, DBG_DRAW, "r300: render_draw_elements (count: %d)\n", count); u_upload_data(r300->uploader, 0, count * 2, 4, indices, &index_buffer_offset, &index_buffer); if (!index_buffer) { return; } if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES | PREP_EMIT_VARRAYS_SWTCL | PREP_INDEXED, index_buffer, 12, 0, 0, -1)) { pipe_resource_reference(&index_buffer, NULL); return; } BEGIN_CS(12); 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, 0); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) | r300render->hwprim); OUT_CS_PKT3(R300_PACKET3_INDX_BUFFER, 2); OUT_CS(R300_INDX_BUFFER_ONE_REG_WR | (R300_VAP_PORT_IDX0 >> 2)); OUT_CS(index_buffer_offset); OUT_CS((count + 1) / 2); OUT_CS_RELOC(r300_resource(index_buffer)); END_CS; pipe_resource_reference(&index_buffer, NULL); } 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; r300render->base.max_vertex_buffer_bytes = R300_MAX_DRAW_VBO_SIZE; 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; 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; } /**************************************************************************** * End of SW TCL functions * ***************************************************************************/ /* This functions is used to draw a rectangle for the blitter module. * * If we rendered a quad, the pixels on the main diagonal * would be computed and stored twice, which makes the clear/copy codepaths * somewhat inefficient. Instead we use a rectangular point sprite. */ void r300_blitter_draw_rectangle(struct blitter_context *blitter, int x1, int y1, int x2, int y2, float depth, unsigned num_instances, enum blitter_attrib_type type, const union blitter_attrib *attrib) { struct r300_context *r300 = r300_context(util_blitter_get_pipe(blitter)); unsigned last_sprite_coord_enable = r300->sprite_coord_enable; unsigned width = x2 - x1; unsigned height = y2 - y1; unsigned vertex_size = type == UTIL_BLITTER_ATTRIB_COLOR || !r300->draw ? 8 : 4; unsigned dwords = 13 + vertex_size + (type == UTIL_BLITTER_ATTRIB_TEXCOORD_XY ? 7 : 0); static const union blitter_attrib zeros; CS_LOCALS(r300); /* XXX workaround for a lockup in MSAA resolve on SWTCL chipsets, this * function most probably doesn't handle type=NONE correctly */ if ((!r300->screen->caps.has_tcl && type == UTIL_BLITTER_ATTRIB_NONE) || type == UTIL_BLITTER_ATTRIB_TEXCOORD_XYZW || num_instances > 1) { util_blitter_draw_rectangle(blitter, x1, y1, x2, y2, depth, num_instances, type, attrib); return; } if (r300->skip_rendering) return; if (type == UTIL_BLITTER_ATTRIB_TEXCOORD_XY) r300->sprite_coord_enable = 1; r300_update_derived_state(r300); /* Mark some states we don't care about as non-dirty. */ r300->viewport_state.dirty = FALSE; if (!r300_prepare_for_rendering(r300, PREP_EMIT_STATES, NULL, dwords, 0, 0, -1)) goto done; DBG(r300, DBG_DRAW, "r300: draw_rectangle\n"); BEGIN_CS(dwords); /* Set up GA. */ OUT_CS_REG(R300_GA_POINT_SIZE, (height * 6) | ((width * 6) << 16)); if (type == UTIL_BLITTER_ATTRIB_TEXCOORD_XY) { /* Set up the GA to generate texcoords. */ OUT_CS_REG(R300_GB_ENABLE, R300_GB_POINT_STUFF_ENABLE | (R300_GB_TEX_STR << R300_GB_TEX0_SOURCE_SHIFT)); OUT_CS_REG_SEQ(R300_GA_POINT_S0, 4); OUT_CS_32F(attrib->texcoord.x1); OUT_CS_32F(attrib->texcoord.y2); OUT_CS_32F(attrib->texcoord.x2); OUT_CS_32F(attrib->texcoord.y1); } /* Set up VAP controls. */ OUT_CS_REG(R300_VAP_CLIP_CNTL, R300_CLIP_DISABLE); OUT_CS_REG(R300_VAP_VTE_CNTL, R300_VTX_XY_FMT | R300_VTX_Z_FMT); OUT_CS_REG(R300_VAP_VTX_SIZE, vertex_size); OUT_CS_REG_SEQ(R300_VAP_VF_MAX_VTX_INDX, 2); OUT_CS(1); OUT_CS(0); /* Draw. */ OUT_CS_PKT3(R300_PACKET3_3D_DRAW_IMMD_2, vertex_size); OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_EMBEDDED | (1 << 16) | R300_VAP_VF_CNTL__PRIM_POINTS); OUT_CS_32F(x1 + width * 0.5f); OUT_CS_32F(y1 + height * 0.5f); OUT_CS_32F(depth); OUT_CS_32F(1); if (vertex_size == 8) { if (!attrib) attrib = &zeros; OUT_CS_TABLE(attrib->color, 4); } END_CS; done: /* Restore the state. */ r300_mark_atom_dirty(r300, &r300->rs_state); r300_mark_atom_dirty(r300, &r300->viewport_state); r300->sprite_coord_enable = last_sprite_coord_enable; } void r300_init_render_functions(struct r300_context *r300) { /* Set draw functions based on presence of HW TCL. */ if (r300->screen->caps.has_tcl) { r300->context.draw_vbo = r300_draw_vbo; } else { r300->context.draw_vbo = r300_swtcl_draw_vbo; } /* Plug in the two-sided stencil reference value fallback if needed. */ if (!r300->screen->caps.is_r500) r300_plug_in_stencil_ref_fallback(r300); }