boolean r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
unsigned start, unsigned count)
{
struct r300_context* r300 = r300_context(pipe);
if (!u_trim_pipe_prim(mode, &count)) {
return FALSE;
}
if (count > 65535) {
return FALSE;
}
r300_update_derived_state(r300);
if (!r300_setup_vertex_buffers(r300)) {
return FALSE;
}
setup_vertex_attributes(r300);
r300_emit_dirty_state(r300);
r300_emit_aos(r300, start);
r300_emit_draw_arrays(r300, mode, count);
return TRUE;
}
static void r300_draw_arrays(struct r300_context *r300,
const struct pipe_draw_info *info,
int instance_id)
{
boolean alt_num_verts = r300->screen->caps.is_r500 &&
info->count > 65536;
unsigned start = info->start;
unsigned count = info->count;
unsigned short_count;
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (!r300_prepare_for_rendering(r300,
PREP_EMIT_STATES | PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS,
NULL, 9, start, 0, instance_id))
return;
if (alt_num_verts || count <= 65535) {
r300_emit_draw_arrays(r300, info->mode, count);
} else {
do {
/* The maximum must be divisible by 4 and 3,
* so that quad and triangle lists are split correctly.
*
* Strips, loops, and fans won't work. */
short_count = MIN2(count, 65532);
r300_emit_draw_arrays(r300, info->mode, short_count);
start += short_count;
count -= short_count;
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (count) {
if (!r300_prepare_for_rendering(r300,
PREP_VALIDATE_VBOS | PREP_EMIT_VARRAYS, NULL, 9,
start, 0, instance_id))
return;
}
} while (count);
}
}
static void r300_draw_arrays(struct pipe_context* pipe, unsigned mode,
unsigned start, unsigned count)
{
struct r300_context* r300 = r300_context(pipe);
boolean alt_num_verts = r300->screen->caps.is_r500 &&
count > 65536 &&
r300->rws->get_value(r300->rws, R300_VID_DRM_2_3_0);
unsigned short_count;
boolean translate = FALSE;
if (r300->skip_rendering) {
return;
}
if (!u_trim_pipe_prim(mode, &count)) {
return;
}
/* Set up fallback for incompatible vertex layout if needed. */
if (r300->incompatible_vb_layout || r300->velems->incompatible_layout) {
r300_begin_vertex_translate(r300);
translate = TRUE;
}
r300_update_derived_state(r300);
if (immd_is_good_idea(r300, count)) {
r300_emit_draw_arrays_immediate(r300, mode, start, count);
} else {
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (!r300_prepare_for_rendering(r300,
PREP_FIRST_DRAW | PREP_VALIDATE_VBOS | PREP_EMIT_AOS,
NULL, 9, start, 0))
goto done;
if (alt_num_verts || count <= 65535) {
r300_emit_draw_arrays(r300, mode, count);
} else {
do {
short_count = MIN2(count, 65535);
r300_emit_draw_arrays(r300, mode, short_count);
start += short_count;
count -= short_count;
/* 9 spare dwords for emit_draw_arrays. Give up if the function fails. */
if (count) {
if (!r300_prepare_for_rendering(r300,
PREP_VALIDATE_VBOS | PREP_EMIT_AOS, NULL, 9,
start, 0))
goto done;
}
} while (count);
}
}
done:
if (translate) {
r300_end_vertex_translate(r300);
}
}
