1 /* 2 * Permission is hereby granted, free of charge, to any person obtaining a 3 * copy of this software and associated documentation files (the "Software"), 4 * to deal in the Software without restriction, including without limitation 5 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 6 * and/or sell copies of the Software, and to permit persons to whom the 7 * Software is furnished to do so, subject to the following conditions: 8 * 9 * The above copyright notice and this permission notice (including the next 10 * paragraph) shall be included in all copies or substantial portions of the 11 * Software. 12 * 13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 16 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS 19 * IN THE SOFTWARE. 20 */ 21 22 #ifndef U_SPLIT_DRAW_H 23 #define U_SPLIT_DRAW_H 24 25 #include "pipe/p_state.h" 26 27 /** 28 * For non-indexed drawing, this function helps work around hardware 29 * limits on the number of verts in a single draw. 30 * 31 * For the given mode of primitive from info, calculate the count and 32 * step in the buffer so the draw can be split into multiple draws. 33 * 34 * \param info pointer to the original pipe_draw_info from draw_vbo 35 * \param max_verts max number of vertices that can be handled by the hardware 36 * \param count number of vertices remaining in the draw call. It is also 37 * used as a return parameter, containing how many vertices 38 * should be sent in the next job to the hardware. 39 * \param step return parameter, will contain how many vertices should be 40 * skipped from the original count on the next call to this 41 * function (may differ from count if the primitive mode 42 * requires the last vertices to be reused in the next draw) 43 */ 44 bool 45 u_split_draw(const struct pipe_draw_info *info, uint32_t max_verts, 46 uint32_t *count, uint32_t *step); 47 48 #endif 49