/* * 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. */ /** * The functions below translate vertex and index buffers to the layout * compatible with the hardware, so that all vertex and index fetches are * DWORD-aligned and all used vertex and index formats are supported. * For indices, an optional index offset is added to each index. */ #include "r300_context.h" #include "translate/translate.h" #include "util/u_index_modify.h" void r300_begin_vertex_translate(struct r300_context *r300) { struct pipe_context *pipe = &r300->context; struct translate_key key = {0}; struct translate_element *te; unsigned tr_elem_index[PIPE_MAX_ATTRIBS] = {0}; struct translate *tr; struct r300_vertex_element_state *ve = r300->velems; boolean vb_translated[PIPE_MAX_ATTRIBS] = {0}; void *vb_map[PIPE_MAX_ATTRIBS] = {0}, *out_map; struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {0}, *out_transfer; struct pipe_resource *out_buffer; unsigned i, num_verts; /* Initialize the translate key, i.e. the recipe how vertices should be * translated. */ for (i = 0; i < ve->count; i++) { struct pipe_vertex_buffer *vb = &r300->vertex_buffer[ve->velem[i].vertex_buffer_index]; enum pipe_format output_format = ve->hw_format[i]; unsigned output_format_size = ve->hw_format_size[i]; /* Check for support. */ if (ve->velem[i].src_format == ve->hw_format[i] && (vb->buffer_offset + ve->velem[i].src_offset) % 4 == 0 && vb->stride % 4 == 0) { 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; te->instance_divisor;*/ te->input_buffer = ve->velem[i].vertex_buffer_index; te->input_format = ve->velem[i].src_format; te->input_offset = vb->buffer_offset + ve->velem[i].src_offset; te->output_format = output_format; te->output_offset = key.output_stride; key.output_stride += output_format_size; vb_translated[ve->velem[i].vertex_buffer_index] = TRUE; tr_elem_index[i] = key.nr_elements; key.nr_elements++; } /* Get a translate object. */ tr = translate_cache_find(r300->tran.translate_cache, &key); /* Map buffers we want to translate. */ for (i = 0; i < r300->vertex_buffer_count; i++) { if (vb_translated[i]) { struct pipe_vertex_buffer *vb = &r300->vertex_buffer[i]; vb_map[i] = pipe_buffer_map(pipe, vb->buffer, PIPE_TRANSFER_READ, &vb_transfer[i]); tr->set_buffer(tr, i, vb_map[i], vb->stride, vb->max_index); } } /* Create and map the output buffer. */ num_verts = r300->vertex_buffer_max_index + 1; out_buffer = pipe_buffer_create(&r300->screen->screen, PIPE_BIND_VERTEX_BUFFER, key.output_stride * num_verts); out_map = pipe_buffer_map(pipe, out_buffer, PIPE_TRANSFER_WRITE, &out_transfer); /* Translate. */ tr->run(tr, 0, num_verts, 0, out_map); /* Unmap all buffers. */ for (i = 0; i < r300->vertex_buffer_count; i++) { if (vb_translated[i]) { pipe_buffer_unmap(pipe, r300->vertex_buffer[i].buffer, vb_transfer[i]); } } pipe_buffer_unmap(pipe, out_buffer, out_transfer); /* Setup the new vertex buffer in the first free slot. */ for (i = 0; i < PIPE_MAX_ATTRIBS; i++) { struct pipe_vertex_buffer *vb = &r300->vertex_buffer[i]; if (!vb->buffer) { pipe_resource_reference(&vb->buffer, out_buffer); vb->buffer_offset = 0; vb->max_index = num_verts - 1; vb->stride = key.output_stride; r300->tran.vb_slot = i; break; } } /* Save and replace vertex elements. */ { struct pipe_vertex_element new_velems[PIPE_MAX_ATTRIBS]; r300->tran.saved_velems = r300->velems; for (i = 0; i < ve->count; i++) { if (vb_translated[ve->velem[i].vertex_buffer_index]) { te = &key.element[tr_elem_index[i]]; new_velems[i].instance_divisor = ve->velem[i].instance_divisor; new_velems[i].src_format = te->output_format; new_velems[i].src_offset = te->output_offset; new_velems[i].vertex_buffer_index = r300->tran.vb_slot; } else { memcpy(&new_velems[i], &ve->velem[i], sizeof(struct pipe_vertex_element)); } } r300->tran.new_velems = pipe->create_vertex_elements_state(pipe, ve->count, new_velems); pipe->bind_vertex_elements_state(pipe, r300->tran.new_velems); } pipe_resource_reference(&out_buffer, NULL); } void r300_end_vertex_translate(struct r300_context *r300) { struct pipe_context *pipe = &r300->context; /* Restore vertex elements. */ pipe->bind_vertex_elements_state(pipe, r300->tran.saved_velems); pipe->delete_vertex_elements_state(pipe, r300->tran.new_velems); /* Delete the now-unused VBO. */ pipe_resource_reference(&r300->vertex_buffer[r300->tran.vb_slot].buffer, NULL); } void r300_translate_index_buffer(struct r300_context *r300, struct pipe_resource **index_buffer, unsigned *index_size, unsigned index_offset, unsigned *start, unsigned count) { switch (*index_size) { case 1: util_shorten_ubyte_elts(&r300->context, index_buffer, index_offset, *start, count); *index_size = 2; *start = 0; break; case 2: if (*start % 2 != 0 || index_offset) { util_rebuild_ushort_elts(&r300->context, index_buffer, index_offset, *start, count); *start = 0; } break; case 4: if (index_offset) { util_rebuild_uint_elts(&r300->context, index_buffer, index_offset, *start, count); *start = 0; } break; } }