/**
* Check if the hardware's cut index support can handle the primitive
* restart case.
*/
static bool
can_cut_index_handle_prims(struct gl_context *ctx,
const struct _mesa_prim *prim,
GLuint nr_prims,
const struct _mesa_index_buffer *ib)
{
if (!can_cut_index_handle_restart_index(ctx, ib)) {
/* The primitive restart index can't be handled, so take
* the software path
*/
return false;
}
for ( ; nr_prims > 0; nr_prims--) {
switch(prim->mode) {
case GL_POINTS:
case GL_LINES:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
/* Cut index supports these primitive types */
break;
default:
/* Cut index does not support these primitive types */
//case GL_LINE_LOOP:
//case GL_TRIANGLE_FAN:
//case GL_QUADS:
//case GL_QUAD_STRIP:
//case GL_POLYGON:
return false;
}
}
return true;
}
/**
* Check if the hardware's cut index support can handle the primitive
* restart case.
*/
static bool
can_cut_index_handle_prims(struct gl_context *ctx,
const struct _mesa_prim *prim,
GLuint nr_prims,
const struct _mesa_index_buffer *ib)
{
struct brw_context *brw = brw_context(ctx);
if (brw->sol.counting_primitives_generated ||
brw->sol.counting_primitives_written) {
/* Counting primitives generated in hardware is not currently
* supported, so take the software path. We need to investigate
* the *_PRIMITIVES_COUNT registers to allow this to be handled
* entirely in hardware.
*/
return false;
}
if (!can_cut_index_handle_restart_index(ctx, ib)) {
/* The primitive restart index can't be handled, so take
* the software path
*/
return false;
}
for ( ; nr_prims > 0; nr_prims--) {
switch(prim->mode) {
case GL_POINTS:
case GL_LINES:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
/* Cut index supports these primitive types */
break;
default:
/* Cut index does not support these primitive types */
//case GL_LINE_LOOP:
//case GL_TRIANGLE_FAN:
//case GL_QUADS:
//case GL_QUAD_STRIP:
//case GL_POLYGON:
return false;
}
}
return true;
}
/**
* Check if the hardware's cut index support can handle the primitive
* restart case.
*/
static bool
can_cut_index_handle_prims(struct gl_context *ctx,
const struct _mesa_prim *prim,
GLuint nr_prims,
const struct _mesa_index_buffer *ib)
{
struct brw_context *brw = brw_context(ctx);
/* Otherwise Haswell can do it all. */
if (brw->gen >= 8 || brw->is_haswell)
return true;
if (!can_cut_index_handle_restart_index(ctx, ib)) {
/* The primitive restart index can't be handled, so take
* the software path
*/
return false;
}
for (int i = 0; i < nr_prims; i++) {
switch (prim[i].mode) {
case GL_POINTS:
case GL_LINES:
case GL_LINE_STRIP:
case GL_TRIANGLES:
case GL_TRIANGLE_STRIP:
case GL_LINES_ADJACENCY:
case GL_LINE_STRIP_ADJACENCY:
case GL_TRIANGLES_ADJACENCY:
case GL_TRIANGLE_STRIP_ADJACENCY:
/* Cut index supports these primitive types */
break;
default:
/* Cut index does not support these primitive types */
//case GL_LINE_LOOP:
//case GL_TRIANGLE_FAN:
//case GL_QUADS:
//case GL_QUAD_STRIP:
//case GL_POLYGON:
return false;
}
}
return true;
}
