enum indices_mode u_unfilled_translator(unsigned prim, unsigned in_index_size, unsigned nr, unsigned unfilled_mode, unsigned *out_prim, unsigned *out_index_size, unsigned *out_nr, u_translate_func *out_translate) { unsigned in_idx; unsigned out_idx; u_unfilled_init(); in_idx = in_size_idx(in_index_size); *out_index_size = (in_index_size == 4) ? 4 : 2; out_idx = out_size_idx(*out_index_size); if (unfilled_mode == PIPE_POLYGON_MODE_POINT) { *out_prim = PIPE_PRIM_POINTS; *out_nr = nr; switch (in_index_size) { case 1: *out_translate = translate_ubyte_ushort; return U_TRANSLATE_NORMAL; case 2: *out_translate = translate_memcpy_uint; return U_TRANSLATE_MEMCPY; case 4: *out_translate = translate_memcpy_ushort; return U_TRANSLATE_MEMCPY; default: *out_translate = translate_memcpy_uint; *out_nr = 0; assert(0); return U_TRANSLATE_ERROR; } } else { assert(unfilled_mode == PIPE_POLYGON_MODE_LINE); *out_prim = PIPE_PRIM_LINES; *out_translate = translate_line[in_idx][out_idx][prim]; *out_nr = nr_lines( prim, nr ); return U_TRANSLATE_NORMAL; } }
/** * Translate indexes when a driver can't support certain types * of drawing. Example include: * - Translate 1-byte indexes into 2-byte indexes * - Translate PIPE_PRIM_QUADS into PIPE_PRIM_TRIANGLES when the hardware * doesn't support the former. * - Translate from first provoking vertex to last provoking vertex and * vice versa. * * Note that this function is used for indexed primitives. * * \param hw_mask mask of (1 << PIPE_PRIM_x) flags indicating which types * of primitives are supported by the hardware. * \param prim incoming PIPE_PRIM_x * \param in_index_size bytes per index value (1, 2 or 4) * \param nr number of incoming vertices * \param in_pv incoming provoking vertex convention (PV_FIRST or PV_LAST) * \param out_pv desired provoking vertex convention (PV_FIRST or PV_LAST) * \param prim_restart whether primitive restart is disable or enabled * \param out_prim returns new PIPE_PRIM_x we'll translate to * \param out_index_size returns bytes per new index value (2 or 4) * \param out_nr returns number of new vertices * \param out_translate returns the translation function to use by the caller */ enum indices_mode u_index_translator(unsigned hw_mask, enum pipe_prim_type prim, unsigned in_index_size, unsigned nr, unsigned in_pv, unsigned out_pv, unsigned prim_restart, enum pipe_prim_type *out_prim, unsigned *out_index_size, unsigned *out_nr, u_translate_func *out_translate) { unsigned in_idx; unsigned out_idx; int ret = U_TRANSLATE_NORMAL; assert(in_index_size == 1 || in_index_size == 2 || in_index_size == 4); u_index_init(); in_idx = in_size_idx(in_index_size); *out_index_size = (in_index_size == 4) ? 4 : 2; out_idx = out_size_idx(*out_index_size); if ((hw_mask & (1<<prim)) && in_index_size == *out_index_size && in_pv == out_pv) { /* Index translation not really needed */ if (in_index_size == 4) *out_translate = translate_memcpy_uint; else *out_translate = translate_memcpy_ushort; *out_prim = prim; *out_nr = nr; return U_TRANSLATE_MEMCPY; } else { *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim_restart][prim]; switch (prim) { case PIPE_PRIM_POINTS: *out_prim = PIPE_PRIM_POINTS; *out_nr = nr; break; case PIPE_PRIM_LINES: *out_prim = PIPE_PRIM_LINES; *out_nr = nr; break; case PIPE_PRIM_LINE_STRIP: *out_prim = PIPE_PRIM_LINES; *out_nr = (nr - 1) * 2; break; case PIPE_PRIM_LINE_LOOP: *out_prim = PIPE_PRIM_LINES; *out_nr = nr * 2; break; case PIPE_PRIM_TRIANGLES: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = nr; break; case PIPE_PRIM_TRIANGLE_STRIP: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_TRIANGLE_FAN: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_QUADS: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr / 4) * 6; break; case PIPE_PRIM_QUAD_STRIP: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_POLYGON: *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_LINES_ADJACENCY: *out_prim = PIPE_PRIM_LINES_ADJACENCY; *out_nr = nr; break; case PIPE_PRIM_LINE_STRIP_ADJACENCY: *out_prim = PIPE_PRIM_LINES_ADJACENCY; *out_nr = (nr - 3) * 4; break; case PIPE_PRIM_TRIANGLES_ADJACENCY: *out_prim = PIPE_PRIM_TRIANGLES_ADJACENCY; *out_nr = nr; break; case PIPE_PRIM_TRIANGLE_STRIP_ADJACENCY: *out_prim = PIPE_PRIM_TRIANGLES_ADJACENCY; *out_nr = ((nr - 4) / 2) * 6; break; default: assert(0); *out_prim = PIPE_PRIM_POINTS; *out_nr = nr; return U_TRANSLATE_ERROR; } } return ret; }
int u_index_translator( unsigned hw_mask, unsigned prim, unsigned in_index_size, unsigned nr, unsigned in_pv, unsigned out_pv, unsigned *out_prim, unsigned *out_index_size, unsigned *out_nr, u_translate_func *out_translate ) { unsigned in_idx; unsigned out_idx; int ret = U_TRANSLATE_NORMAL; u_index_init(); in_idx = in_size_idx(in_index_size); *out_index_size = (in_index_size == 4) ? 4 : 2; out_idx = out_size_idx(*out_index_size); if ((hw_mask & (1<<prim)) && in_index_size == *out_index_size && in_pv == out_pv) { if (in_index_size == 4) *out_translate = translate_memcpy_uint; else *out_translate = translate_memcpy_ushort; *out_prim = prim; *out_nr = nr; return U_TRANSLATE_MEMCPY; } else { switch (prim) { case PIPE_PRIM_POINTS: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_POINTS; *out_nr = nr; break; case PIPE_PRIM_LINES: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_LINES; *out_nr = nr; break; case PIPE_PRIM_LINE_STRIP: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_LINES; *out_nr = (nr - 1) * 2; break; case PIPE_PRIM_LINE_LOOP: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_LINES; *out_nr = nr * 2; break; case PIPE_PRIM_TRIANGLES: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = nr; break; case PIPE_PRIM_TRIANGLE_STRIP: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_TRIANGLE_FAN: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_QUADS: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr / 4) * 6; break; case PIPE_PRIM_QUAD_STRIP: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; case PIPE_PRIM_POLYGON: *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_TRIANGLES; *out_nr = (nr - 2) * 3; break; default: assert(0); *out_translate = translate[in_idx][out_idx][in_pv][out_pv][prim]; *out_prim = PIPE_PRIM_POINTS; *out_nr = nr; return U_TRANSLATE_ERROR; } } return ret; }