diff options
Diffstat (limited to 'mesalib/src/gallium/auxiliary/util/u_vbuf.c')
| -rw-r--r-- | mesalib/src/gallium/auxiliary/util/u_vbuf.c | 868 |
1 files changed, 868 insertions, 0 deletions
diff --git a/mesalib/src/gallium/auxiliary/util/u_vbuf.c b/mesalib/src/gallium/auxiliary/util/u_vbuf.c new file mode 100644 index 000000000..f6da91203 --- /dev/null +++ b/mesalib/src/gallium/auxiliary/util/u_vbuf.c @@ -0,0 +1,868 @@ +/************************************************************************** + * + * Copyright 2011 Marek Olšák <maraeo@gmail.com> + * 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 AUTHORS 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. + * + **************************************************************************/ + +#include "util/u_vbuf.h" + +#include "util/u_format.h" +#include "util/u_inlines.h" +#include "util/u_memory.h" +#include "util/u_upload_mgr.h" +#include "translate/translate.h" +#include "translate/translate_cache.h" + +struct u_vbuf_elements { + unsigned count; + struct pipe_vertex_element ve[PIPE_MAX_ATTRIBS]; + + unsigned src_format_size[PIPE_MAX_ATTRIBS]; + + /* If (velem[i].src_format != native_format[i]), the vertex buffer + * referenced by the vertex element cannot be used for rendering and + * its vertex data must be translated to native_format[i]. */ + enum pipe_format native_format[PIPE_MAX_ATTRIBS]; + unsigned native_format_size[PIPE_MAX_ATTRIBS]; + + /* This might mean two things: + * - src_format != native_format, as discussed above. + * - src_offset % 4 != 0 (if the caps don't allow such an offset). */ + boolean incompatible_layout; + /* Per-element flags. */ + boolean incompatible_layout_elem[PIPE_MAX_ATTRIBS]; +}; + +struct u_vbuf_priv { + struct u_vbuf b; + struct pipe_context *pipe; + struct translate_cache *translate_cache; + + /* Vertex element state bound by the state tracker. */ + void *saved_ve; + /* and its associated helper structure for this module. */ + struct u_vbuf_elements *ve; + + /* Vertex elements used for the translate fallback. */ + struct pipe_vertex_element fallback_velems[PIPE_MAX_ATTRIBS]; + /* If non-NULL, this is a vertex element state used for the translate + * fallback and therefore used for rendering too. */ + void *fallback_ve; + /* The vertex buffer slot index where translated vertices have been + * stored in. */ + unsigned fallback_vb_slot; + /* When binding the fallback vertex element state, we don't want to + * change saved_ve and ve. This is set to TRUE in such cases. */ + boolean ve_binding_lock; + + /* Whether there is any user buffer. */ + boolean any_user_vbs; + /* Whether there is a buffer with a non-native layout. */ + boolean incompatible_vb_layout; + /* Per-buffer flags. */ + boolean incompatible_vb[PIPE_MAX_ATTRIBS]; +}; + +static void u_vbuf_init_format_caps(struct u_vbuf_priv *mgr) +{ + struct pipe_screen *screen = mgr->pipe->screen; + + mgr->b.caps.format_fixed32 = + screen->is_format_supported(screen, PIPE_FORMAT_R32_FIXED, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER); + + mgr->b.caps.format_float16 = + screen->is_format_supported(screen, PIPE_FORMAT_R16_FLOAT, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER); + + mgr->b.caps.format_float64 = + screen->is_format_supported(screen, PIPE_FORMAT_R64_FLOAT, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER); + + mgr->b.caps.format_norm32 = + screen->is_format_supported(screen, PIPE_FORMAT_R32_UNORM, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER) && + screen->is_format_supported(screen, PIPE_FORMAT_R32_SNORM, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER); + + mgr->b.caps.format_scaled32 = + screen->is_format_supported(screen, PIPE_FORMAT_R32_USCALED, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER) && + screen->is_format_supported(screen, PIPE_FORMAT_R32_SSCALED, PIPE_BUFFER, + 0, PIPE_BIND_VERTEX_BUFFER); +} + +struct u_vbuf * +u_vbuf_create(struct pipe_context *pipe, + unsigned upload_buffer_size, + unsigned upload_buffer_alignment, + unsigned upload_buffer_bind, + enum u_fetch_alignment fetch_alignment) +{ + struct u_vbuf_priv *mgr = CALLOC_STRUCT(u_vbuf_priv); + + mgr->pipe = pipe; + mgr->translate_cache = translate_cache_create(); + mgr->fallback_vb_slot = ~0; + + mgr->b.uploader = u_upload_create(pipe, upload_buffer_size, + upload_buffer_alignment, + upload_buffer_bind); + + mgr->b.caps.fetch_dword_unaligned = + fetch_alignment == U_VERTEX_FETCH_BYTE_ALIGNED; + + u_vbuf_init_format_caps(mgr); + + return &mgr->b; +} + +void u_vbuf_destroy(struct u_vbuf *mgrb) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + unsigned i; + + for (i = 0; i < mgr->b.nr_vertex_buffers; i++) { + pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL); + } + for (i = 0; i < mgr->b.nr_real_vertex_buffers; i++) { + pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL); + } + + translate_cache_destroy(mgr->translate_cache); + u_upload_destroy(mgr->b.uploader); + FREE(mgr); +} + + +static unsigned u_vbuf_get_free_real_vb_slot(struct u_vbuf_priv *mgr) +{ + unsigned i, nr = mgr->ve->count; + boolean used_vb[PIPE_MAX_ATTRIBS] = {0}; + + for (i = 0; i < nr; i++) { + if (!mgr->ve->incompatible_layout_elem[i]) { + unsigned index = mgr->ve->ve[i].vertex_buffer_index; + + if (!mgr->incompatible_vb[index]) { + used_vb[index] = TRUE; + } + } + } + + for (i = 0; i < PIPE_MAX_ATTRIBS; i++) { + if (!used_vb[i]) { + if (i >= mgr->b.nr_real_vertex_buffers) { + mgr->b.nr_real_vertex_buffers = i+1; + } + return i; + } + } + return ~0; +} + +static void +u_vbuf_translate_begin(struct u_vbuf_priv *mgr, + int min_index, int max_index) +{ + struct translate_key key; + struct translate_element *te; + unsigned tr_elem_index[PIPE_MAX_ATTRIBS]; + struct translate *tr; + boolean vb_translated[PIPE_MAX_ATTRIBS] = {0}; + uint8_t *out_map; + struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0}; + struct pipe_resource *out_buffer = NULL; + unsigned i, num_verts, out_offset; + boolean upload_flushed = FALSE; + + memset(&key, 0, sizeof(key)); + memset(tr_elem_index, 0xff, sizeof(tr_elem_index)); + + /* Get a new vertex buffer slot. */ + mgr->fallback_vb_slot = u_vbuf_get_free_real_vb_slot(mgr); + + if (mgr->fallback_vb_slot == ~0) { + return; /* XXX error, not enough attribs */ + } + + /* Initialize the description of how vertices should be translated. */ + for (i = 0; i < mgr->ve->count; i++) { + enum pipe_format output_format = mgr->ve->native_format[i]; + unsigned output_format_size = mgr->ve->native_format_size[i]; + + /* Check for support. */ + if (!mgr->ve->incompatible_layout_elem[i] && + !mgr->incompatible_vb[mgr->ve->ve[i].vertex_buffer_index]) { + continue; + } + + /* Workaround for translate: output floats instead of halfs. */ + switch (output_format) { + case PIPE_FORMAT_R16_FLOAT: + output_format = PIPE_FORMAT_R32_FLOAT; + output_format_size = 4; + break; + case PIPE_FORMAT_R16G16_FLOAT: + output_format = PIPE_FORMAT_R32G32_FLOAT; + output_format_size = 8; + break; + case PIPE_FORMAT_R16G16B16_FLOAT: + output_format = PIPE_FORMAT_R32G32B32_FLOAT; + output_format_size = 12; + break; + case PIPE_FORMAT_R16G16B16A16_FLOAT: + output_format = PIPE_FORMAT_R32G32B32A32_FLOAT; + output_format_size = 16; + break; + default:; + } + + /* Add this vertex element. */ + te = &key.element[key.nr_elements]; + te->type = TRANSLATE_ELEMENT_NORMAL; + te->instance_divisor = 0; + te->input_buffer = mgr->ve->ve[i].vertex_buffer_index; + te->input_format = mgr->ve->ve[i].src_format; + te->input_offset = mgr->ve->ve[i].src_offset; + te->output_format = output_format; + te->output_offset = key.output_stride; + + key.output_stride += output_format_size; + vb_translated[mgr->ve->ve[i].vertex_buffer_index] = TRUE; + tr_elem_index[i] = key.nr_elements; + key.nr_elements++; + } + + /* Get a translate object. */ + tr = translate_cache_find(mgr->translate_cache, &key); + + /* Map buffers we want to translate. */ + for (i = 0; i < mgr->b.nr_vertex_buffers; i++) { + if (vb_translated[i]) { + struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[i]; + + uint8_t *map = pipe_buffer_map(mgr->pipe, vb->buffer, + PIPE_TRANSFER_READ, &vb_transfer[i]); + + tr->set_buffer(tr, i, + map + vb->buffer_offset + vb->stride * min_index, + vb->stride, ~0); + } + } + + /* Create and map the output buffer. */ + num_verts = max_index + 1 - min_index; + + u_upload_alloc(mgr->b.uploader, + key.output_stride * min_index, + key.output_stride * num_verts, + &out_offset, &out_buffer, &upload_flushed, + (void**)&out_map); + + out_offset -= key.output_stride * min_index; + + /* Translate. */ + tr->run(tr, 0, num_verts, 0, out_map); + + /* Unmap all buffers. */ + for (i = 0; i < mgr->b.nr_vertex_buffers; i++) { + if (vb_translated[i]) { + pipe_buffer_unmap(mgr->pipe, vb_transfer[i]); + } + } + + /* Setup the new vertex buffer. */ + mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer_offset = out_offset; + mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].stride = key.output_stride; + + /* Move the buffer reference. */ + pipe_resource_reference( + &mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer, NULL); + mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer = out_buffer; + out_buffer = NULL; + + /* Setup new vertex elements. */ + for (i = 0; i < mgr->ve->count; i++) { + if (tr_elem_index[i] < key.nr_elements) { + te = &key.element[tr_elem_index[i]]; + mgr->fallback_velems[i].instance_divisor = mgr->ve->ve[i].instance_divisor; + mgr->fallback_velems[i].src_format = te->output_format; + mgr->fallback_velems[i].src_offset = te->output_offset; + mgr->fallback_velems[i].vertex_buffer_index = mgr->fallback_vb_slot; + } else { + memcpy(&mgr->fallback_velems[i], &mgr->ve->ve[i], + sizeof(struct pipe_vertex_element)); + } + } + + + mgr->fallback_ve = + mgr->pipe->create_vertex_elements_state(mgr->pipe, mgr->ve->count, + mgr->fallback_velems); + + /* Preserve saved_ve. */ + mgr->ve_binding_lock = TRUE; + mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->fallback_ve); + mgr->ve_binding_lock = FALSE; +} + +static void u_vbuf_translate_end(struct u_vbuf_priv *mgr) +{ + if (mgr->fallback_ve == NULL) { + return; + } + + /* Restore vertex elements. */ + /* Note that saved_ve will be overwritten in bind_vertex_elements_state. */ + mgr->pipe->bind_vertex_elements_state(mgr->pipe, mgr->saved_ve); + mgr->pipe->delete_vertex_elements_state(mgr->pipe, mgr->fallback_ve); + mgr->fallback_ve = NULL; + + /* Delete the now-unused VBO. */ + pipe_resource_reference(&mgr->b.real_vertex_buffer[mgr->fallback_vb_slot].buffer, + NULL); + mgr->fallback_vb_slot = ~0; + mgr->b.nr_real_vertex_buffers = mgr->b.nr_vertex_buffers; +} + +#define FORMAT_REPLACE(what, withwhat) \ + case PIPE_FORMAT_##what: format = PIPE_FORMAT_##withwhat; break + +struct u_vbuf_elements * +u_vbuf_create_vertex_elements(struct u_vbuf *mgrb, + unsigned count, + const struct pipe_vertex_element *attribs, + struct pipe_vertex_element *native_attribs) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + unsigned i; + struct u_vbuf_elements *ve = CALLOC_STRUCT(u_vbuf_elements); + + ve->count = count; + + if (!count) { + return ve; + } + + memcpy(ve->ve, attribs, sizeof(struct pipe_vertex_element) * count); + memcpy(native_attribs, attribs, sizeof(struct pipe_vertex_element) * count); + + /* Set the best native format in case the original format is not + * supported. */ + for (i = 0; i < count; i++) { + enum pipe_format format = ve->ve[i].src_format; + + ve->src_format_size[i] = util_format_get_blocksize(format); + + /* Choose a native format. + * For now we don't care about the alignment, that's going to + * be sorted out later. */ + if (!mgr->b.caps.format_fixed32) { + switch (format) { + FORMAT_REPLACE(R32_FIXED, R32_FLOAT); + FORMAT_REPLACE(R32G32_FIXED, R32G32_FLOAT); + FORMAT_REPLACE(R32G32B32_FIXED, R32G32B32_FLOAT); + FORMAT_REPLACE(R32G32B32A32_FIXED, R32G32B32A32_FLOAT); + default:; + } + } + if (!mgr->b.caps.format_float16) { + switch (format) { + FORMAT_REPLACE(R16_FLOAT, R32_FLOAT); + FORMAT_REPLACE(R16G16_FLOAT, R32G32_FLOAT); + FORMAT_REPLACE(R16G16B16_FLOAT, R32G32B32_FLOAT); + FORMAT_REPLACE(R16G16B16A16_FLOAT, R32G32B32A32_FLOAT); + default:; + } + } + if (!mgr->b.caps.format_float64) { + switch (format) { + FORMAT_REPLACE(R64_FLOAT, R32_FLOAT); + FORMAT_REPLACE(R64G64_FLOAT, R32G32_FLOAT); + FORMAT_REPLACE(R64G64B64_FLOAT, R32G32B32_FLOAT); + FORMAT_REPLACE(R64G64B64A64_FLOAT, R32G32B32A32_FLOAT); + default:; + } + } + if (!mgr->b.caps.format_norm32) { + switch (format) { + FORMAT_REPLACE(R32_UNORM, R32_FLOAT); + FORMAT_REPLACE(R32G32_UNORM, R32G32_FLOAT); + FORMAT_REPLACE(R32G32B32_UNORM, R32G32B32_FLOAT); + FORMAT_REPLACE(R32G32B32A32_UNORM, R32G32B32A32_FLOAT); + FORMAT_REPLACE(R32_SNORM, R32_FLOAT); + FORMAT_REPLACE(R32G32_SNORM, R32G32_FLOAT); + FORMAT_REPLACE(R32G32B32_SNORM, R32G32B32_FLOAT); + FORMAT_REPLACE(R32G32B32A32_SNORM, R32G32B32A32_FLOAT); + default:; + } + } + if (!mgr->b.caps.format_scaled32) { + switch (format) { + FORMAT_REPLACE(R32_USCALED, R32_FLOAT); + FORMAT_REPLACE(R32G32_USCALED, R32G32_FLOAT); + FORMAT_REPLACE(R32G32B32_USCALED, R32G32B32_FLOAT); + FORMAT_REPLACE(R32G32B32A32_USCALED,R32G32B32A32_FLOAT); + FORMAT_REPLACE(R32_SSCALED, R32_FLOAT); + FORMAT_REPLACE(R32G32_SSCALED, R32G32_FLOAT); + FORMAT_REPLACE(R32G32B32_SSCALED, R32G32B32_FLOAT); + FORMAT_REPLACE(R32G32B32A32_SSCALED,R32G32B32A32_FLOAT); + default:; + } + } + + native_attribs[i].src_format = format; + ve->native_format[i] = format; + ve->native_format_size[i] = + util_format_get_blocksize(ve->native_format[i]); + + ve->incompatible_layout_elem[i] = + ve->ve[i].src_format != ve->native_format[i] || + (!mgr->b.caps.fetch_dword_unaligned && ve->ve[i].src_offset % 4 != 0); + ve->incompatible_layout = + ve->incompatible_layout || + ve->incompatible_layout_elem[i]; + } + + /* Align the formats to the size of DWORD if needed. */ + if (!mgr->b.caps.fetch_dword_unaligned) { + for (i = 0; i < count; i++) { + ve->native_format_size[i] = align(ve->native_format_size[i], 4); + } + } + + return ve; +} + +void u_vbuf_bind_vertex_elements(struct u_vbuf *mgrb, + void *cso, + struct u_vbuf_elements *ve) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + + if (!cso) { + return; + } + + if (!mgr->ve_binding_lock) { + mgr->saved_ve = cso; + mgr->ve = ve; + } +} + +void u_vbuf_destroy_vertex_elements(struct u_vbuf *mgr, + struct u_vbuf_elements *ve) +{ + FREE(ve); +} + +void u_vbuf_set_vertex_buffers(struct u_vbuf *mgrb, + unsigned count, + const struct pipe_vertex_buffer *bufs) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + unsigned i; + + mgr->any_user_vbs = FALSE; + mgr->incompatible_vb_layout = FALSE; + memset(mgr->incompatible_vb, 0, sizeof(mgr->incompatible_vb)); + + if (!mgr->b.caps.fetch_dword_unaligned) { + /* Check if the strides and offsets are aligned to the size of DWORD. */ + for (i = 0; i < count; i++) { + if (bufs[i].buffer) { + if (bufs[i].stride % 4 != 0 || + bufs[i].buffer_offset % 4 != 0) { + mgr->incompatible_vb_layout = TRUE; + mgr->incompatible_vb[i] = TRUE; + } + } + } + } + + for (i = 0; i < count; i++) { + const struct pipe_vertex_buffer *vb = &bufs[i]; + + pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, vb->buffer); + + mgr->b.real_vertex_buffer[i].buffer_offset = + mgr->b.vertex_buffer[i].buffer_offset = vb->buffer_offset; + + mgr->b.real_vertex_buffer[i].stride = + mgr->b.vertex_buffer[i].stride = vb->stride; + + if (!vb->buffer || + mgr->incompatible_vb[i]) { + pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL); + continue; + } + + if (u_vbuf_resource(vb->buffer)->user_ptr) { + pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL); + mgr->any_user_vbs = TRUE; + continue; + } + + pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, vb->buffer); + } + + for (i = count; i < mgr->b.nr_vertex_buffers; i++) { + pipe_resource_reference(&mgr->b.vertex_buffer[i].buffer, NULL); + } + for (i = count; i < mgr->b.nr_real_vertex_buffers; i++) { + pipe_resource_reference(&mgr->b.real_vertex_buffer[i].buffer, NULL); + } + + mgr->b.nr_vertex_buffers = count; + mgr->b.nr_real_vertex_buffers = count; +} + +void u_vbuf_set_index_buffer(struct u_vbuf *mgr, + const struct pipe_index_buffer *ib) +{ + if (ib && ib->buffer) { + assert(ib->offset % ib->index_size == 0); + pipe_resource_reference(&mgr->index_buffer.buffer, ib->buffer); + mgr->index_buffer.offset = ib->offset; + mgr->index_buffer.index_size = ib->index_size; + } else { + pipe_resource_reference(&mgr->index_buffer.buffer, NULL); + } +} + +static void +u_vbuf_upload_buffers(struct u_vbuf_priv *mgr, + int min_index, int max_index, + unsigned instance_count) +{ + unsigned i; + unsigned count = max_index + 1 - min_index; + unsigned nr_velems = mgr->ve->count; + unsigned nr_vbufs = mgr->b.nr_vertex_buffers; + struct pipe_vertex_element *velems = + mgr->fallback_ve ? mgr->fallback_velems : mgr->ve->ve; + unsigned start_offset[PIPE_MAX_ATTRIBS]; + unsigned end_offset[PIPE_MAX_ATTRIBS] = {0}; + + /* Determine how much data needs to be uploaded. */ + for (i = 0; i < nr_velems; i++) { + struct pipe_vertex_element *velem = &velems[i]; + unsigned index = velem->vertex_buffer_index; + struct pipe_vertex_buffer *vb = &mgr->b.vertex_buffer[index]; + unsigned instance_div, first, size; + + /* Skip the buffer generated by translate. */ + if (index == mgr->fallback_vb_slot) { + continue; + } + + assert(vb->buffer); + + if (!u_vbuf_resource(vb->buffer)->user_ptr) { + continue; + } + + instance_div = velem->instance_divisor; + first = vb->buffer_offset + velem->src_offset; + + if (!vb->stride) { + /* Constant attrib. */ + size = mgr->ve->src_format_size[i]; + } else if (instance_div) { + /* Per-instance attrib. */ + unsigned count = (instance_count + instance_div - 1) / instance_div; + size = vb->stride * (count - 1) + mgr->ve->src_format_size[i]; + } else { + /* Per-vertex attrib. */ + first += vb->stride * min_index; + size = vb->stride * (count - 1) + mgr->ve->src_format_size[i]; + } + + /* Update offsets. */ + if (!end_offset[index]) { + start_offset[index] = first; + end_offset[index] = first + size; + } else { + if (first < start_offset[index]) + start_offset[index] = first; + if (first + size > end_offset[index]) + end_offset[index] = first + size; + } + } + + /* Upload buffers. */ + for (i = 0; i < nr_vbufs; i++) { + unsigned start, end = end_offset[i]; + boolean flushed; + struct pipe_vertex_buffer *real_vb; + uint8_t *ptr; + + if (!end) { + continue; + } + + start = start_offset[i]; + assert(start < end); + + real_vb = &mgr->b.real_vertex_buffer[i]; + ptr = u_vbuf_resource(mgr->b.vertex_buffer[i].buffer)->user_ptr; + + u_upload_data(mgr->b.uploader, start, end - start, ptr + start, + &real_vb->buffer_offset, &real_vb->buffer, &flushed); + + real_vb->buffer_offset -= start; + } +} + +unsigned u_vbuf_draw_max_vertex_count(struct u_vbuf *mgrb) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + unsigned i, nr = mgr->ve->count; + struct pipe_vertex_element *velems = + mgr->fallback_ve ? mgr->fallback_velems : mgr->ve->ve; + unsigned result = ~0; + + for (i = 0; i < nr; i++) { + struct pipe_vertex_buffer *vb = + &mgr->b.real_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 || + !vb->stride || + velems[i].instance_divisor) { + continue; + } + + size = vb->buffer->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 = mgr->ve->native_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 boolean u_vbuf_need_minmax_index(struct u_vbuf_priv *mgr) +{ + unsigned i, nr = mgr->ve->count; + + for (i = 0; i < nr; i++) { + struct pipe_vertex_buffer *vb; + unsigned index; + + /* Per-instance attribs don't need min/max_index. */ + if (mgr->ve->ve[i].instance_divisor) { + continue; + } + + index = mgr->ve->ve[i].vertex_buffer_index; + vb = &mgr->b.vertex_buffer[index]; + + /* Constant attribs don't need min/max_index. */ + if (!vb->stride) { + continue; + } + + /* Per-vertex attribs need min/max_index. */ + if (u_vbuf_resource(vb->buffer)->user_ptr || + mgr->ve->incompatible_layout_elem[i] || + mgr->incompatible_vb[index]) { + return TRUE; + } + } + + return FALSE; +} + +static void u_vbuf_get_minmax_index(struct pipe_context *pipe, + struct pipe_index_buffer *ib, + const struct pipe_draw_info *info, + int *out_min_index, + int *out_max_index) +{ + struct pipe_transfer *transfer = NULL; + const void *indices; + unsigned i; + unsigned restart_index = info->restart_index; + + if (u_vbuf_resource(ib->buffer)->user_ptr) { + indices = u_vbuf_resource(ib->buffer)->user_ptr + + ib->offset + info->start * ib->index_size; + } else { + indices = pipe_buffer_map_range(pipe, ib->buffer, + ib->offset + info->start * ib->index_size, + info->count * ib->index_size, + PIPE_TRANSFER_READ, &transfer); + } + + switch (ib->index_size) { + case 4: { + const unsigned *ui_indices = (const unsigned*)indices; + unsigned max_ui = 0; + unsigned min_ui = ~0U; + if (info->primitive_restart) { + for (i = 0; i < info->count; i++) { + if (ui_indices[i] != restart_index) { + if (ui_indices[i] > max_ui) max_ui = ui_indices[i]; + if (ui_indices[i] < min_ui) min_ui = ui_indices[i]; + } + } + } + else { + for (i = 0; i < info->count; i++) { + if (ui_indices[i] > max_ui) max_ui = ui_indices[i]; + if (ui_indices[i] < min_ui) min_ui = ui_indices[i]; + } + } + *out_min_index = min_ui; + *out_max_index = max_ui; + break; + } + case 2: { + const unsigned short *us_indices = (const unsigned short*)indices; + unsigned max_us = 0; + unsigned min_us = ~0U; + if (info->primitive_restart) { + for (i = 0; i < info->count; i++) { + if (us_indices[i] != restart_index) { + if (us_indices[i] > max_us) max_us = us_indices[i]; + if (us_indices[i] < min_us) min_us = us_indices[i]; + } + } + } + else { + for (i = 0; i < info->count; i++) { + if (us_indices[i] > max_us) max_us = us_indices[i]; + if (us_indices[i] < min_us) min_us = us_indices[i]; + } + } + *out_min_index = min_us; + *out_max_index = max_us; + break; + } + case 1: { + const unsigned char *ub_indices = (const unsigned char*)indices; + unsigned max_ub = 0; + unsigned min_ub = ~0U; + if (info->primitive_restart) { + for (i = 0; i < info->count; i++) { + if (ub_indices[i] != restart_index) { + if (ub_indices[i] > max_ub) max_ub = ub_indices[i]; + if (ub_indices[i] < min_ub) min_ub = ub_indices[i]; + } + } + } + else { + for (i = 0; i < info->count; i++) { + if (ub_indices[i] > max_ub) max_ub = ub_indices[i]; + if (ub_indices[i] < min_ub) min_ub = ub_indices[i]; + } + } + *out_min_index = min_ub; + *out_max_index = max_ub; + break; + } + default: + assert(0); + } + + if (transfer) { + pipe_buffer_unmap(pipe, transfer); + } +} + +enum u_vbuf_return_flags +u_vbuf_draw_begin(struct u_vbuf *mgrb, + const struct pipe_draw_info *info) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + int min_index, max_index; + + if (!mgr->incompatible_vb_layout && + !mgr->ve->incompatible_layout && + !mgr->any_user_vbs) { + return 0; + } + + if (info->indexed) { + if (info->max_index != ~0) { + min_index = info->min_index + info->index_bias; + max_index = info->max_index + info->index_bias; + } else if (u_vbuf_need_minmax_index(mgr)) { + u_vbuf_get_minmax_index(mgr->pipe, &mgr->b.index_buffer, info, + &min_index, &max_index); + min_index += info->index_bias; + max_index += info->index_bias; + } else { + min_index = 0; + max_index = 0; + } + } else { + min_index = info->start; + max_index = info->start + info->count - 1; + } + + /* Translate vertices with non-native layouts or formats. */ + if (mgr->incompatible_vb_layout || mgr->ve->incompatible_layout) { + u_vbuf_translate_begin(mgr, min_index, max_index); + } + + /* Upload user buffers. */ + if (mgr->any_user_vbs) { + u_vbuf_upload_buffers(mgr, min_index, max_index, info->instance_count); + } + return U_VBUF_BUFFERS_UPDATED; +} + +void u_vbuf_draw_end(struct u_vbuf *mgrb) +{ + struct u_vbuf_priv *mgr = (struct u_vbuf_priv*)mgrb; + + if (mgr->fallback_ve) { + u_vbuf_translate_end(mgr); + } +} |