static void r300_draw_vbo(struct pipe_context* pipe,
const struct pipe_draw_info *dinfo)
{
struct r300_context* r300 = r300_context(pipe);
struct pipe_draw_info info = *dinfo;
info.indexed = info.indexed;
if (r300->skip_rendering ||
!u_trim_pipe_prim(info.mode, &info.count)) {
return;
}
r300_update_derived_state(r300);
/* Draw. */
if (info.indexed) {
unsigned max_count = r300_max_vertex_count(r300);
if (!max_count) {
fprintf(stderr, "r300: Skipping a draw command. There is a buffer "
" which is too small to be used for rendering.\n");
return;
}
if (max_count == ~0) {
/* There are no per-vertex vertex elements. Use the hardware maximum. */
max_count = 0xffffff;
}
info.max_index = max_count - 1;
info.start += r300->index_buffer.offset / r300->index_buffer.index_size;
if (info.instance_count <= 1) {
if (info.count <= 8 &&
r300->index_buffer.user_buffer) {
r300_draw_elements_immediate(r300, &info);
} else {
r300_draw_elements(r300, &info, -1);
}
} else {
r300_draw_elements_instanced(r300, &info);
}
} else {
if (info.instance_count <= 1) {
if (immd_is_good_idea(r300, info.count)) {
r300_draw_arrays_immediate(r300, &info);
} else {
r300_draw_arrays(r300, &info, -1);
}
} else {
r300_draw_arrays_instanced(r300, &info);
}
}
}
static void r300_draw_vbo(struct pipe_context* pipe,
const struct pipe_draw_info *dinfo)
{
struct r300_context* r300 = r300_context(pipe);
struct pipe_draw_info info = *dinfo;
info.indexed = info.indexed && r300->vbuf_mgr->index_buffer.buffer;
if (r300->skip_rendering ||
!u_trim_pipe_prim(info.mode, &info.count)) {
return;
}
r300_update_derived_state(r300);
/* Start the vbuf manager and update buffers if needed. */
if (u_vbuf_draw_begin(r300->vbuf_mgr, &info) & U_VBUF_BUFFERS_UPDATED) {
r300->vertex_arrays_dirty = TRUE;
}
/* Draw. */
if (info.indexed) {
unsigned max_count = u_vbuf_draw_max_vertex_count(r300->vbuf_mgr);
if (!max_count) {
fprintf(stderr, "r300: Skipping a draw command. There is a buffer "
" which is too small to be used for rendering.\n");
goto done;
}
if (max_count == ~0) {
/* There are no per-vertex vertex elements. Use the hardware maximum. */
max_count = 0xffffff;
}
info.max_index = max_count - 1;
info.start += r300->vbuf_mgr->index_buffer.offset / r300->vbuf_mgr->index_buffer.index_size;
if (info.instance_count <= 1) {
if (info.count <= 8 &&
r300_resource(r300->vbuf_mgr->index_buffer.buffer)->b.user_ptr) {
r300_draw_elements_immediate(r300, &info);
} else {
r300_draw_elements(r300, &info, -1);
}
} else {
r300_draw_elements_instanced(r300, &info);
}
} else {
if (info.instance_count <= 1) {
if (immd_is_good_idea(r300, info.count)) {
r300_draw_arrays_immediate(r300, &info);
} else {
r300_draw_arrays(r300, &info, -1);
}
} else {
r300_draw_arrays_instanced(r300, &info);
}
}
done:
u_vbuf_draw_end(r300->vbuf_mgr);
}
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);
}
}
