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-rw-r--r--src/gallium/drivers/softpipe/sp_draw_arrays.c164
1 files changed, 164 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_draw_arrays.c b/src/gallium/drivers/softpipe/sp_draw_arrays.c
new file mode 100644
index 0000000000..71a303a8b5
--- /dev/null
+++ b/src/gallium/drivers/softpipe/sp_draw_arrays.c
@@ -0,0 +1,164 @@
+/**************************************************************************
+ *
+ * Copyright 2007 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.
+ *
+ **************************************************************************/
+
+/* Author:
+ * Brian Paul
+ * Keith Whitwell
+ */
+
+
+#include "pipe/p_defines.h"
+#include "pipe/p_context.h"
+#include "pipe/p_winsys.h"
+
+#include "sp_context.h"
+#include "sp_state.h"
+
+#include "pipe/draw/draw_context.h"
+
+
+
+static void
+softpipe_map_constant_buffers(struct softpipe_context *sp)
+{
+ struct pipe_winsys *ws = sp->pipe.winsys;
+ uint i;
+ for (i = 0; i < 2; i++) {
+ if (sp->constants[i].size)
+ sp->mapped_constants[i] = ws->buffer_map(ws, sp->constants[i].buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ }
+
+ draw_set_mapped_constant_buffer(sp->draw,
+ sp->mapped_constants[PIPE_SHADER_VERTEX]);
+}
+
+static void
+softpipe_unmap_constant_buffers(struct softpipe_context *sp)
+{
+ struct pipe_winsys *ws = sp->pipe.winsys;
+ uint i;
+ for (i = 0; i < 2; i++) {
+ if (sp->constants[i].size)
+ ws->buffer_unmap(ws, sp->constants[i].buffer);
+ sp->mapped_constants[i] = NULL;
+ }
+}
+
+
+boolean
+softpipe_draw_arrays(struct pipe_context *pipe, unsigned mode,
+ unsigned start, unsigned count)
+{
+ return softpipe_draw_elements(pipe, NULL, 0, mode, start, count);
+}
+
+
+
+/**
+ * Draw vertex arrays, with optional indexing.
+ * Basically, map the vertex buffers (and drawing surfaces), then hand off
+ * the drawing to the 'draw' module.
+ *
+ * XXX should the element buffer be specified/bound with a separate function?
+ */
+boolean
+softpipe_draw_elements(struct pipe_context *pipe,
+ struct pipe_buffer *indexBuffer,
+ unsigned indexSize,
+ unsigned mode, unsigned start, unsigned count)
+{
+ struct softpipe_context *sp = softpipe_context(pipe);
+ struct draw_context *draw = sp->draw;
+ unsigned i;
+
+ /* first, check that the primitive is not malformed. It is the
+ * state tracker's responsibility to do send only correctly formed
+ * primitives down. It currently isn't doing that though...
+ */
+#if 1
+ count = draw_trim_prim( mode, count );
+#else
+ if (!draw_validate_prim( mode, count ))
+ assert(0);
+#endif
+
+
+ if (sp->dirty)
+ softpipe_update_derived( sp );
+
+ softpipe_map_surfaces(sp);
+ softpipe_map_constant_buffers(sp);
+
+ /*
+ * Map vertex buffers
+ */
+ for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
+ if (sp->vertex_buffer[i].buffer) {
+ void *buf
+ = pipe->winsys->buffer_map(pipe->winsys,
+ sp->vertex_buffer[i].buffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ draw_set_mapped_vertex_buffer(draw, i, buf);
+ }
+ }
+ /* Map index buffer, if present */
+ if (indexBuffer) {
+ void *mapped_indexes
+ = pipe->winsys->buffer_map(pipe->winsys, indexBuffer,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ draw_set_mapped_element_buffer(draw, indexSize, mapped_indexes);
+ }
+ else {
+ /* no index/element buffer */
+ draw_set_mapped_element_buffer(draw, 0, NULL);
+ }
+
+
+ /* draw! */
+ draw_arrays(draw, mode, start, count);
+
+ /*
+ * unmap vertex/index buffers - will cause draw module to flush
+ */
+ for (i = 0; i < PIPE_ATTRIB_MAX; i++) {
+ if (sp->vertex_buffer[i].buffer) {
+ draw_set_mapped_vertex_buffer(draw, i, NULL);
+ pipe->winsys->buffer_unmap(pipe->winsys, sp->vertex_buffer[i].buffer);
+ }
+ }
+ if (indexBuffer) {
+ draw_set_mapped_element_buffer(draw, 0, NULL);
+ pipe->winsys->buffer_unmap(pipe->winsys, indexBuffer);
+ }
+
+
+ /* Note: leave drawing surfaces mapped */
+ softpipe_unmap_constant_buffers(sp);
+
+ return TRUE;
+}