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;
}
/* This is the fast-path drawing & emission for HW TCL. */
boolean r300_draw_range_elements(struct pipe_context* pipe,
struct pipe_buffer* indexBuffer,
unsigned indexSize,
unsigned minIndex,
unsigned maxIndex,
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);
setup_index_buffer(r300, indexBuffer, indexSize);
r300_emit_dirty_state(r300);
r300_emit_aos(r300, 0);
r300_emit_draw_elements(r300, indexBuffer, indexSize, minIndex, maxIndex,
mode, start, count);
return TRUE;
}
/**
* Validate buffers and emit dirty state.
* \param r300 The context.
* \param flags See r300_prepare_flags.
* \param index_buffer The index buffer to validate. The parameter may be NULL.
* \param aos_offset The offset passed to emit_aos.
* \param index_bias The index bias to emit.
* \return TRUE if rendering should be skipped
*/
static boolean r300_emit_states(struct r300_context *r300,
enum r300_prepare_flags flags,
struct pipe_resource *index_buffer,
int aos_offset,
int index_bias)
{
boolean first_draw = flags & PREP_FIRST_DRAW;
boolean emit_aos = flags & PREP_EMIT_AOS;
boolean emit_aos_swtcl = flags & PREP_EMIT_AOS_SWTCL;
boolean indexed = flags & PREP_INDEXED;
boolean hw_index_bias = r500_index_bias_supported(r300);
/* Validate buffers and emit dirty state if needed. */
if (first_draw) {
if (!r300_emit_buffer_validate(r300, flags & PREP_VALIDATE_VBOS,
index_buffer)) {
fprintf(stderr, "r300: CS space validation failed. "
"(not enough memory?) Skipping rendering.\n");
return FALSE;
}
r300_emit_dirty_state(r300);
if (hw_index_bias) {
if (r300->screen->caps.has_tcl)
r500_emit_index_bias(r300, index_bias);
else
r500_emit_index_bias(r300, 0);
}
if (emit_aos)
r300_emit_aos(r300, aos_offset, indexed);
if (emit_aos_swtcl)
r300_emit_aos_swtcl(r300, indexed);
}
return TRUE;
}
