Diffstat (limited to 'src/gallium/auxiliary/util/u_split_draw.h')
1 files changed, 48 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_split_draw.h b/src/gallium/auxiliary/util/u_split_draw.h
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+ * 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, sublicense,
+ * 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 NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
+ * For non-indexed drawing, this function helps work around hardware
+ * limits on the number of verts in a single draw.
+ * For the given mode of primitive from info, calculate the count and
+ * step in the buffer so the draw can be split into multiple draws.
+ * \param info pointer to the original pipe_draw_info from draw_vbo
+ * \param max_verts max number of vertices that can be handled by the hardware
+ * \param count number of vertices remaining in the draw call. It is also
+ * used as a return parameter, containing how many vertices
+ * should be sent in the next job to the hardware.
+ * \param step return parameter, will contain how many vertices should be
+ * skipped from the original count on the next call to this
+ * function (may differ from count if the primitive mode
+ * requires the last vertices to be reused in the next draw)
+u_split_draw(const struct pipe_draw_info *info, uint32_t max_verts,
+ uint32_t *count, uint32_t *step);