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;
}
/**
* 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 buffer_offset The offset passed to emit_vertex_arrays.
* \param index_bias The index bias to emit.
* \param instance_id Index of instance to render
* \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 buffer_offset,
int index_bias, int instance_id)
{
boolean emit_states = flags & PREP_EMIT_STATES;
boolean emit_vertex_arrays = flags & PREP_EMIT_VARRAYS;
boolean emit_vertex_arrays_swtcl = flags & PREP_EMIT_VARRAYS_SWTCL;
boolean indexed = flags & PREP_INDEXED;
boolean validate_vbos = flags & PREP_VALIDATE_VBOS;
/* Validate buffers and emit dirty state if needed. */
if (emit_states || (emit_vertex_arrays && validate_vbos)) {
if (!r300_emit_buffer_validate(r300, validate_vbos,
index_buffer)) {
fprintf(stderr, "r300: CS space validation failed. "
"(not enough memory?) Skipping rendering.\n");
return FALSE;
}
}
if (emit_states)
r300_emit_dirty_state(r300);
if (r300->screen->caps.is_r500) {
if (r300->screen->caps.has_tcl)
r500_emit_index_bias(r300, index_bias);
else
r500_emit_index_bias(r300, 0);
}
if (emit_vertex_arrays &&
(r300->vertex_arrays_dirty ||
r300->vertex_arrays_indexed != indexed ||
r300->vertex_arrays_offset != buffer_offset ||
r300->vertex_arrays_instance_id != instance_id)) {
r300_emit_vertex_arrays(r300, buffer_offset, indexed, instance_id);
r300->vertex_arrays_dirty = FALSE;
r300->vertex_arrays_indexed = indexed;
r300->vertex_arrays_offset = buffer_offset;
r300->vertex_arrays_instance_id = instance_id;
}
if (emit_vertex_arrays_swtcl)
r300_emit_vertex_arrays_swtcl(r300, indexed);
return TRUE;
}
static void r300_render_draw_arrays(struct vbuf_render* render,
unsigned start,
unsigned count)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
CS_LOCALS(r300);
r300_emit_dirty_state(r300);
DBG(r300, DBG_DRAW, "r300: Doing vbuf render, count %d\n", count);
BEGIN_CS(2);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_VBUF_2, 0);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_VERTEX_LIST | (count << 16) |
r300render->hwprim);
END_CS;
}
/* 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;
}
static void r300_render_draw(struct vbuf_render* render,
const ushort* indices,
uint count)
{
struct r300_render* r300render = r300_render(render);
struct r300_context* r300 = r300render->r300;
int i;
CS_LOCALS(r300);
r300_emit_dirty_state(r300);
BEGIN_CS(2 + (count+1)/2);
OUT_CS_PKT3(R300_PACKET3_3D_DRAW_INDX_2, (count+1)/2);
OUT_CS(R300_VAP_VF_CNTL__PRIM_WALK_INDICES | (count << 16) |
r300render->hwprim);
for (i = 0; i < count-1; i += 2) {
OUT_CS(indices[i+1] << 16 | indices[i]);
}
if (count % 2) {
OUT_CS(indices[count-1]);
}
END_CS;
}
