* 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 THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * VMWARE AND/OR THEIR 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.
#define U_INDICES_H
#include "pipe/p_compiler.h"
+#include "pipe/p_defines.h"
+/* First/last provoking vertex */
#define PV_FIRST 0
#define PV_LAST 1
#define PV_COUNT 2
+/* primitive restart disable/enable flags */
+#define PR_DISABLE 0
+#define PR_ENABLE 1
+#define PR_COUNT 2
+
+
+/**
+ * Index translator function (for glDrawElements() case)
+ *
+ * \param in the input index buffer
+ * \param start the index of the first vertex (pipe_draw_info::start)
+ * \param nr the number of vertices (pipe_draw_info::count)
+ * \param out output buffer big enough for nr vertices (of
+ * @out_index_size bytes each)
+ */
typedef void (*u_translate_func)( const void *in,
- unsigned nr,
+ unsigned start,
+ unsigned in_nr,
+ unsigned out_nr,
+ unsigned restart_index,
void *out );
-typedef void (*u_generate_func)( unsigned nr,
+/**
+ * Index generator function (for glDrawArrays() case)
+ *
+ * \param start the index of the first vertex (pipe_draw_info::start)
+ * \param nr the number of vertices (pipe_draw_info::count)
+ * \param out output buffer big enough for nr vertices (of
+ * @out_index_size bytes each)
+ */
+typedef void (*u_generate_func)( unsigned start,
+ unsigned nr,
void *out );
/* Return codes describe the translate/generate operation. Caller may
* be able to reuse translated indices under some circumstances.
*/
-#define U_TRANSLATE_ERROR -1
-#define U_TRANSLATE_NORMAL 1
-#define U_TRANSLATE_MEMCPY 2
-#define U_GENERATE_LINEAR 3
-#define U_GENERATE_REUSABLE 4
-#define U_GENERATE_ONE_OFF 5
-
+enum indices_mode {
+ U_TRANSLATE_ERROR = -1,
+ U_TRANSLATE_NORMAL = 1,
+ U_TRANSLATE_MEMCPY = 2,
+ U_GENERATE_LINEAR = 3,
+ U_GENERATE_REUSABLE= 4,
+ U_GENERATE_ONE_OFF = 5,
+};
void u_index_init( void );
-int u_index_translator( unsigned hw_mask,
- unsigned prim,
- unsigned in_index_size,
- unsigned nr,
- unsigned in_pv, /* API */
- unsigned out_pv, /* hardware */
- unsigned *out_prim,
- unsigned *out_index_size,
- unsigned *out_nr,
- u_translate_func *out_translate );
-
-/* Note that even when generating it is necessary to know what the
+
+/**
+ * For indexed drawing, this function determines what kind of primitive
+ * transformation is needed (if any) for handling:
+ * - unsupported primitive types (such as PIPE_PRIM_POLYGON)
+ * - changing the provoking vertex
+ * - primitive restart
+ * - index size (1 byte, 2 byte or 4 byte indexes)
+ */
+enum indices_mode
+u_index_translator(unsigned hw_mask,
+ enum pipe_prim_type prim,
+ unsigned in_index_size,
+ unsigned nr,
+ unsigned in_pv, /* API */
+ unsigned out_pv, /* hardware */
+ unsigned prim_restart,
+ enum pipe_prim_type *out_prim,
+ unsigned *out_index_size,
+ unsigned *out_nr,
+ u_translate_func *out_translate);
+
+
+/**
+ * For non-indexed drawing, this function determines what kind of primitive
+ * transformation is needed (see above).
+ *
+ * Note that even when generating it is necessary to know what the
* API's PV is, as the indices generated will depend on whether it is
* the same as hardware or not, and in the case of triangle strips,
* whether it is first or last.
*/
-int u_index_generator( unsigned hw_mask,
- unsigned prim,
- unsigned start,
- unsigned nr,
- unsigned in_pv, /* API */
- unsigned out_pv, /* hardware */
- unsigned *out_prim,
- unsigned *out_index_size,
- unsigned *out_nr,
- u_generate_func *out_generate );
+enum indices_mode
+u_index_generator(unsigned hw_mask,
+ enum pipe_prim_type prim,
+ unsigned start,
+ unsigned nr,
+ unsigned in_pv, /* API */
+ unsigned out_pv, /* hardware */
+ enum pipe_prim_type *out_prim,
+ unsigned *out_index_size,
+ unsigned *out_nr,
+ u_generate_func *out_generate);
+
+
+void u_unfilled_init( void );
+
+/**
+ * If the driver can't handle "unfilled" primitives (i.e. drawing triangle
+ * primitives as 3 lines or 3 points) this function can be used to translate
+ * an indexed primitive into a new indexed primitive to draw as lines or
+ * points.
+ */
+enum indices_mode
+u_unfilled_translator(enum pipe_prim_type prim,
+ unsigned in_index_size,
+ unsigned nr,
+ unsigned unfilled_mode,
+ enum pipe_prim_type *out_prim,
+ unsigned *out_index_size,
+ unsigned *out_nr,
+ u_translate_func *out_translate);
+/**
+ * As above, but for non-indexed (array) primitives.
+ */
+enum indices_mode
+u_unfilled_generator(enum pipe_prim_type prim,
+ unsigned start,
+ unsigned nr,
+ unsigned unfilled_mode,
+ enum pipe_prim_type *out_prim,
+ unsigned *out_index_size,
+ unsigned *out_nr,
+ u_generate_func *out_generate);
#endif