diff options
Diffstat (limited to 'src/gallium/drivers/i965/brw_draw.c')
-rw-r--r-- | src/gallium/drivers/i965/brw_draw.c | 289 |
1 files changed, 289 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_draw.c b/src/gallium/drivers/i965/brw_draw.c new file mode 100644 index 0000000..ea8d39a --- /dev/null +++ b/src/gallium/drivers/i965/brw_draw.c @@ -0,0 +1,289 @@ +/************************************************************************** + * + * 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 "util/u_prim.h" +#include "util/u_upload_mgr.h" + +#include "brw_draw.h" +#include "brw_defines.h" +#include "brw_context.h" +#include "brw_state.h" +#include "brw_debug.h" +#include "brw_screen.h" + +#include "brw_batchbuffer.h" + + +static uint32_t prim_to_hw_prim[PIPE_PRIM_POLYGON+1] = { + _3DPRIM_POINTLIST, + _3DPRIM_LINELIST, + _3DPRIM_LINELOOP, + _3DPRIM_LINESTRIP, + _3DPRIM_TRILIST, + _3DPRIM_TRISTRIP, + _3DPRIM_TRIFAN, + _3DPRIM_QUADLIST, + _3DPRIM_QUADSTRIP, + _3DPRIM_POLYGON +}; + + + +/* When the primitive changes, set a state bit and re-validate. Not + * the nicest and would rather deal with this by having all the + * programs be immune to the active primitive (ie. cope with all + * possibilities). That may not be realistic however. + */ +static int brw_set_prim(struct brw_context *brw, unsigned prim ) +{ + + if (BRW_DEBUG & DEBUG_PRIMS) + debug_printf("PRIM: %s\n", u_prim_name(prim)); + + if (prim != brw->primitive) { + unsigned reduced_prim; + + brw->primitive = prim; + brw->state.dirty.brw |= BRW_NEW_PRIMITIVE; + + reduced_prim = u_reduced_prim(prim); + if (reduced_prim != brw->reduced_primitive) { + brw->reduced_primitive = reduced_prim; + brw->state.dirty.brw |= BRW_NEW_REDUCED_PRIMITIVE; + } + } + + return prim_to_hw_prim[prim]; +} + + + +static int brw_emit_prim(struct brw_context *brw, + unsigned start, + unsigned count, + boolean indexed, + uint32_t hw_prim) +{ + struct brw_3d_primitive prim_packet; + int ret; + + if (BRW_DEBUG & DEBUG_PRIMS) + debug_printf("%s start %d count %d indexed %d hw_prim %d\n", + __FUNCTION__, start, count, indexed, hw_prim); + + prim_packet.header.opcode = CMD_3D_PRIM; + prim_packet.header.length = sizeof(prim_packet)/4 - 2; + prim_packet.header.pad = 0; + prim_packet.header.topology = hw_prim; + prim_packet.header.indexed = indexed; + + prim_packet.verts_per_instance = count; + prim_packet.start_vert_location = start; + if (indexed) + prim_packet.start_vert_location += brw->ib.start_vertex_offset; + prim_packet.instance_count = 1; + prim_packet.start_instance_location = 0; + prim_packet.base_vert_location = 0; /* prim->basevertex; XXX: add this to gallium */ + + + /* If we're set to always flush, do it before and after the primitive emit. + * We want to catch both missed flushes that hurt instruction/state cache + * and missed flushes of the render cache as it heads to other parts of + * the besides the draw code. + */ + if (0) { + BEGIN_BATCH(1, IGNORE_CLIPRECTS); + OUT_BATCH((CMD_MI_FLUSH << 16) | BRW_FLUSH_STATE_CACHE); + ADVANCE_BATCH(); + } + if (prim_packet.verts_per_instance) { + ret = brw_batchbuffer_data( brw->batch, &prim_packet, + sizeof(prim_packet), LOOP_CLIPRECTS); + if (ret) + return ret; + } + if (0) { + BEGIN_BATCH(1, IGNORE_CLIPRECTS); + OUT_BATCH((CMD_MI_FLUSH << 16) | BRW_FLUSH_STATE_CACHE); + ADVANCE_BATCH(); + } + + return 0; +} + + +/* May fail if out of video memory for texture or vbo upload, or on + * fallback conditions. + */ +static int +try_draw_range_elements(struct brw_context *brw, + struct pipe_buffer *index_buffer, + unsigned hw_prim, + unsigned start, unsigned count) +{ + int ret; + + ret = brw_validate_state(brw); + if (ret) + return ret; + + /* Check that we can fit our state in with our existing batchbuffer, or + * flush otherwise. + */ + ret = brw->sws->check_aperture_space(brw->sws, + brw->state.validated_bos, + brw->state.validated_bo_count); + if (ret) + return ret; + + ret = brw_upload_state(brw); + if (ret) + return ret; + + ret = brw_emit_prim(brw, start, count, index_buffer != NULL, hw_prim); + if (ret) + return ret; + + if (brw->flags.always_flush_batch) + brw_context_flush( brw ); + + return 0; +} + + +static void +brw_draw_range_elements(struct pipe_context *pipe, + struct pipe_buffer *index_buffer, + unsigned index_size, + unsigned min_index, + unsigned max_index, + unsigned mode, unsigned start, unsigned count) +{ + struct brw_context *brw = brw_context(pipe); + int ret; + uint32_t hw_prim; + + hw_prim = brw_set_prim(brw, mode); + + if (BRW_DEBUG & DEBUG_PRIMS) + debug_printf("PRIM: %s start %d count %d index_buffer %p\n", + u_prim_name(mode), start, count, (void *)index_buffer); + + /* Potentially trigger upload of new index buffer. + * + * XXX: do we need to go through state validation to achieve this? + * Could just call upload code directly. + */ + if (brw->curr.index_buffer != index_buffer || + brw->curr.index_size != index_size) { + pipe_buffer_reference( &brw->curr.index_buffer, index_buffer ); + brw->curr.index_size = index_size; + brw->state.dirty.mesa |= PIPE_NEW_INDEX_BUFFER; + } + + /* XXX: do we really care? + */ + if (brw->curr.min_index != min_index || + brw->curr.max_index != max_index) + { + brw->curr.min_index = min_index; + brw->curr.max_index = max_index; + brw->state.dirty.mesa |= PIPE_NEW_INDEX_RANGE; + } + + + /* Make a first attempt at drawing: + */ + ret = try_draw_range_elements(brw, index_buffer, hw_prim, start, count ); + + /* Otherwise, flush and retry: + */ + if (ret != 0) { + brw_context_flush( brw ); + ret = try_draw_range_elements(brw, index_buffer, hw_prim, start, count ); + assert(ret == 0); + } +} + +static void +brw_draw_elements(struct pipe_context *pipe, + struct pipe_buffer *index_buffer, + unsigned index_size, + unsigned mode, + unsigned start, unsigned count) +{ + brw_draw_range_elements( pipe, index_buffer, + index_size, + 0, 0xffffffff, + mode, + start, count ); +} + +static void +brw_draw_arrays(struct pipe_context *pipe, unsigned mode, + unsigned start, unsigned count) +{ + brw_draw_elements(pipe, NULL, 0, mode, start, count); +} + + + +boolean brw_draw_init( struct brw_context *brw ) +{ + /* Register our drawing function: + */ + brw->base.draw_arrays = brw_draw_arrays; + brw->base.draw_elements = brw_draw_elements; + brw->base.draw_range_elements = brw_draw_range_elements; + + /* Create helpers for uploading data in user buffers: + */ + brw->vb.upload_vertex = u_upload_create( brw->base.screen, + 128 * 1024, + 64, + PIPE_BUFFER_USAGE_VERTEX ); + if (brw->vb.upload_vertex == NULL) + return FALSE; + + brw->vb.upload_index = u_upload_create( brw->base.screen, + 32 * 1024, + 64, + PIPE_BUFFER_USAGE_INDEX ); + if (brw->vb.upload_index == NULL) + return FALSE; + + return TRUE; +} + +void brw_draw_cleanup( struct brw_context *brw ) +{ + u_upload_destroy( brw->vb.upload_vertex ); + u_upload_destroy( brw->vb.upload_index ); + + bo_reference(&brw->ib.bo, NULL); +} |