/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * 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 TUNGSTEN GRAPHICS 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 "pipe/p_context.h" #include "util/u_inlines.h" #include "util/u_upload_mgr.h" #include "util/u_math.h" #include "brw_draw.h" #include "brw_defines.h" #include "brw_context.h" #include "brw_state.h" #include "brw_screen.h" #include "brw_batchbuffer.h" #include "brw_debug.h" #include "brw_resource.h" static unsigned get_index_type(int type) { switch (type) { case 1: return BRW_INDEX_BYTE; case 2: return BRW_INDEX_WORD; case 4: return BRW_INDEX_DWORD; default: assert(0); return 0; } } static int brw_prepare_vertices(struct brw_context *brw) { unsigned int min_index = brw->curr.min_index; unsigned int max_index = brw->curr.max_index; GLuint i; int ret; if (BRW_DEBUG & DEBUG_VERTS) debug_printf("%s %d..%d\n", __FUNCTION__, min_index, max_index); for (i = 0; i < brw->curr.num_vertex_buffers; i++) { struct pipe_vertex_buffer *vb = &brw->curr.vertex_buffer[i]; struct brw_winsys_buffer *bo; struct pipe_resource *upload_buf = NULL; unsigned offset; if (BRW_DEBUG & DEBUG_VERTS) debug_printf("%s vb[%d] user:%d offset:0x%x sz:0x%x stride:0x%x\n", __FUNCTION__, i, brw_buffer_is_user_buffer(vb->buffer), vb->buffer_offset, vb->buffer->width0, vb->stride); if (brw_buffer_is_user_buffer(vb->buffer)) { /* XXX: simplify this. Stop the state trackers from generating * zero-stride buffers & have them use additional constants (or * add support for >1 constant buffer) instead. */ unsigned size = (vb->stride == 0 ? vb->buffer->width0 - vb->buffer_offset : MAX2(vb->buffer->width0 - vb->buffer_offset, vb->stride * (max_index + 1 - min_index))); boolean flushed; ret = u_upload_buffer( brw->vb.upload_vertex, 0, vb->buffer_offset + min_index * vb->stride, size, vb->buffer, &offset, &upload_buf, &flushed ); if (ret) return ret; bo = brw_buffer(upload_buf)->bo; assert(offset + size <= bo->size); } else { offset = vb->buffer_offset; bo = brw_buffer(vb->buffer)->bo; } assert(offset < bo->size); /* Set up post-upload info about this vertex buffer: */ brw->vb.vb[i].offset = offset; brw->vb.vb[i].stride = vb->stride; brw->vb.vb[i].vertex_count = (vb->stride == 0 ? 1 : (bo->size - offset) / vb->stride); bo_reference( &brw->vb.vb[i].bo, bo ); /* Don't need to retain this reference. We have a reference on * the underlying winsys buffer: */ pipe_resource_reference( &upload_buf, NULL ); } brw->vb.nr_vb = i; brw_prepare_query_begin(brw); for (i = 0; i < brw->vb.nr_vb; i++) { brw_add_validated_bo(brw, brw->vb.vb[i].bo); } return 0; } static int brw_emit_vertex_buffers( struct brw_context *brw ) { int i; /* If the VS doesn't read any inputs (calculating vertex position from * a state variable for some reason, for example), just bail. * * The stale VB state stays in place, but they don't do anything unless * a VE loads from them. */ if (brw->vb.nr_vb == 0) { if (BRW_DEBUG & DEBUG_VERTS) debug_printf("%s: no active vertex buffers\n", __FUNCTION__); return 0; } /* Emit VB state packets. */ BEGIN_BATCH(1 + brw->vb.nr_vb * 4, IGNORE_CLIPRECTS); OUT_BATCH((CMD_VERTEX_BUFFER << 16) | ((1 + brw->vb.nr_vb * 4) - 2)); for (i = 0; i < brw->vb.nr_vb; i++) { OUT_BATCH((i << BRW_VB0_INDEX_SHIFT) | BRW_VB0_ACCESS_VERTEXDATA | (brw->vb.vb[i].stride << BRW_VB0_PITCH_SHIFT)); OUT_RELOC(brw->vb.vb[i].bo, BRW_USAGE_VERTEX, brw->vb.vb[i].offset); if (brw->gen == 5) { OUT_RELOC(brw->vb.vb[i].bo, BRW_USAGE_VERTEX, brw->vb.vb[i].bo->size - 1); } else OUT_BATCH(brw->vb.vb[i].stride ? brw->vb.vb[i].vertex_count : 0); OUT_BATCH(0); /* Instance data step rate */ } ADVANCE_BATCH(); return 0; } static int brw_emit_vertex_elements(struct brw_context *brw) { const struct brw_vertex_element_packet *brw_velems = brw->curr.velems; unsigned size = brw_velems->header.length + 2; /* why is this here */ brw_emit_query_begin(brw); brw_batchbuffer_data(brw->batch, brw_velems, size * 4, IGNORE_CLIPRECTS); return 0; } static int brw_emit_vertices( struct brw_context *brw ) { int ret; ret = brw_emit_vertex_buffers( brw ); if (ret) return ret; /* XXX should separate this? */ ret = brw_emit_vertex_elements( brw ); if (ret) return ret; return 0; } const struct brw_tracked_state brw_vertices = { .dirty = { .mesa = (PIPE_NEW_INDEX_RANGE | PIPE_NEW_VERTEX_BUFFER | PIPE_NEW_VERTEX_ELEMENT), .brw = BRW_NEW_BATCH, .cache = 0, }, .prepare = brw_prepare_vertices, .emit = brw_emit_vertices, }; static int brw_prepare_indices(struct brw_context *brw) { struct pipe_resource *index_buffer = brw->curr.index_buffer; struct pipe_resource *upload_buf = NULL; struct brw_winsys_buffer *bo = NULL; GLuint offset; GLuint index_size, index_offset; GLuint ib_size; int ret; if (index_buffer == NULL) return 0; if (BRW_DEBUG & DEBUG_VERTS) debug_printf("%s: index_size:%d index_buffer->size:%d\n", __FUNCTION__, brw->curr.index_size, brw->curr.index_buffer->width0); ib_size = index_buffer->width0; index_size = brw->curr.index_size; index_offset = brw->curr.index_offset; /* Turn userbuffer into a proper hardware buffer? */ if (brw_buffer_is_user_buffer(index_buffer)) { boolean flushed; ret = u_upload_buffer( brw->vb.upload_index, 0, index_offset, ib_size, index_buffer, &offset, &upload_buf, &flushed ); if (ret) return ret; bo = brw_buffer(upload_buf)->bo; /* XXX: annotate the userbuffer with the upload information so * that successive calls don't get re-uploaded. */ } else { bo = brw_buffer(index_buffer)->bo; ib_size = bo->size; offset = index_offset; } /* Use CMD_3D_PRIM's start_vertex_offset to avoid re-uploading the * index buffer state when we're just moving the start index of our * drawing. * * In gallium this will happen in the case where successive draw * calls are made with (distinct?) userbuffers, but the upload_mgr * places the data into a single winsys buffer. * * This statechange doesn't raise any state flags and is always * just merged into the final draw packet: */ if (1) { assert((offset & (index_size - 1)) == 0); brw->ib.start_vertex_offset = offset / index_size; } /* These statechanges trigger a new CMD_INDEX_BUFFER packet: */ if (brw->ib.bo != bo || brw->ib.size != ib_size) { bo_reference(&brw->ib.bo, bo); brw->ib.size = ib_size; brw->state.dirty.brw |= BRW_NEW_INDEX_BUFFER; } pipe_resource_reference( &upload_buf, NULL ); brw_add_validated_bo(brw, brw->ib.bo); return 0; } const struct brw_tracked_state brw_indices = { .dirty = { .mesa = PIPE_NEW_INDEX_BUFFER, .brw = 0, .cache = 0, }, .prepare = brw_prepare_indices, }; static int brw_emit_index_buffer(struct brw_context *brw) { /* Emit the indexbuffer packet: */ if (brw->ib.bo) { struct brw_indexbuffer ib; memset(&ib, 0, sizeof(ib)); ib.header.bits.opcode = CMD_INDEX_BUFFER; ib.header.bits.length = sizeof(ib)/4 - 2; ib.header.bits.index_format = get_index_type(brw->ib.size); ib.header.bits.cut_index_enable = 0; BEGIN_BATCH(4, IGNORE_CLIPRECTS); OUT_BATCH( ib.header.dword ); OUT_RELOC(brw->ib.bo, BRW_USAGE_VERTEX, brw->ib.offset); OUT_RELOC(brw->ib.bo, BRW_USAGE_VERTEX, brw->ib.offset + brw->ib.size - 1); OUT_BATCH( 0 ); ADVANCE_BATCH(); } return 0; } const struct brw_tracked_state brw_index_buffer = { .dirty = { .mesa = 0, .brw = BRW_NEW_BATCH | BRW_NEW_INDEX_BUFFER, .cache = 0, }, .emit = brw_emit_index_buffer, };