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-rw-r--r--src/gallium/drivers/i965/brw_draw.c289
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 00000000000..ea8d39adaf0
--- /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);
+}
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