#include "draw/draw_gs.h"
#include "draw/draw_private.h"
#include "draw/draw_pt.h"
+#include "draw/draw_vbuf.h"
#include "draw/draw_vs.h"
#include "tgsi/tgsi_dump.h"
#include "util/u_math.h"
* - backend -- the vbuf_render provided by the driver.
*/
static boolean
-draw_pt_arrays(struct draw_context *draw,
+draw_pt_arrays(struct draw_context *draw,
unsigned prim,
unsigned start,
unsigned count)
opt |= PT_PIPELINE;
}
- if (!draw->bypass_clipping && !draw->pt.test_fse) {
+ if ((draw->clip_xy ||
+ draw->clip_z ||
+ draw->clip_user) && !draw->pt.test_fse) {
opt |= PT_CLIPTEST;
}
middle = draw->pt.middle.general;
}
- frontend = draw->pt.front.vsplit;
+ frontend = draw->pt.frontend;
+
+ if (frontend ) {
+ if (draw->pt.prim != prim || draw->pt.opt != opt) {
+ /* In certain conditions switching primitives requires us to flush
+ * and validate the different stages. One example is when smooth
+ * lines are active but first drawn with triangles and then with
+ * lines.
+ */
+ draw_do_flush( draw, DRAW_FLUSH_STATE_CHANGE );
+ frontend = NULL;
+ } else if (draw->pt.eltSize != draw->pt.user.eltSize) {
+ /* Flush draw state if eltSize changed.
+ * This could be improved so only the frontend is flushed since it
+ * converts all indices to ushorts and the fetch part of the middle
+ * always prepares both linear and indexed.
+ */
+ frontend->flush( frontend, DRAW_FLUSH_STATE_CHANGE );
+ frontend = NULL;
+ }
+ }
+
+ if (!frontend) {
+ frontend = draw->pt.front.vsplit;
+
+ frontend->prepare( frontend, prim, middle, opt );
- frontend->prepare( frontend, prim, middle, opt );
+ draw->pt.frontend = frontend;
+ draw->pt.eltSize = draw->pt.user.eltSize;
+ draw->pt.prim = prim;
+ draw->pt.opt = opt;
+ }
- frontend->run(frontend, start, count);
+ if (draw->pt.rebind_parameters) {
+ /* update constants, viewport dims, clip planes, etc */
+ middle->bind_parameters(middle);
+ draw->pt.rebind_parameters = FALSE;
+ }
- frontend->finish( frontend );
+ frontend->run( frontend, start, count );
return TRUE;
}
+void draw_pt_flush( struct draw_context *draw, unsigned flags )
+{
+ assert(flags);
+
+ if (draw->pt.frontend) {
+ draw->pt.frontend->flush( draw->pt.frontend, flags );
+
+ /* don't prepare if we only are flushing the backend */
+ if (flags & DRAW_FLUSH_STATE_CHANGE)
+ draw->pt.frontend = NULL;
+ }
+
+ if (flags & DRAW_FLUSH_PARAMETER_CHANGE) {
+ draw->pt.rebind_parameters = TRUE;
+ }
+}
+
+
boolean draw_pt_init( struct draw_context *draw )
{
uint j;
if (draw->pt.user.eltSize) {
- const char *elts;
-
/* indexed arrays */
- elts = (const char *) draw->pt.user.elts;
- elts += draw->pt.index_buffer.offset;
switch (draw->pt.user.eltSize) {
case 1:
{
- const ubyte *elem = (const ubyte *) elts;
+ const ubyte *elem = (const ubyte *) draw->pt.user.elts;
ii = elem[start + i];
}
break;
case 2:
{
- const ushort *elem = (const ushort *) elts;
+ const ushort *elem = (const ushort *) draw->pt.user.elts;
ii = elem[start + i];
}
break;
case 4:
{
- const uint *elem = (const uint *) elts;
+ const uint *elem = (const uint *) draw->pt.user.elts;
ii = elem[start + i];
}
break;
}
+/** Helper code for below */
+#define PRIM_RESTART_LOOP(elements) \
+ do { \
+ for (i = start; i < end; i++) { \
+ if (elements[i] == info->restart_index) { \
+ if (cur_count > 0) { \
+ /* draw elts up to prev pos */ \
+ draw_pt_arrays(draw, prim, cur_start, cur_count); \
+ } \
+ /* begin new prim at next elt */ \
+ cur_start = i + 1; \
+ cur_count = 0; \
+ } \
+ else { \
+ cur_count++; \
+ } \
+ } \
+ if (cur_count > 0) { \
+ draw_pt_arrays(draw, prim, cur_start, cur_count); \
+ } \
+ } while (0)
+
+
+/**
+ * For drawing prims with primitive restart enabled.
+ * Scan for restart indexes and draw the runs of elements/vertices between
+ * the restarts.
+ */
+static void
+draw_pt_arrays_restart(struct draw_context *draw,
+ const struct pipe_draw_info *info)
+{
+ const unsigned prim = info->mode;
+ const unsigned start = info->start;
+ const unsigned count = info->count;
+ const unsigned end = start + count;
+ unsigned i, cur_start, cur_count;
+
+ assert(info->primitive_restart);
+
+ if (draw->pt.user.eltSize) {
+ /* indexed prims (draw_elements) */
+ cur_start = start;
+ cur_count = 0;
+
+ switch (draw->pt.user.eltSize) {
+ case 1:
+ {
+ const ubyte *elt_ub = (const ubyte *) draw->pt.user.elts;
+ PRIM_RESTART_LOOP(elt_ub);
+ }
+ break;
+ case 2:
+ {
+ const ushort *elt_us = (const ushort *) draw->pt.user.elts;
+ PRIM_RESTART_LOOP(elt_us);
+ }
+ break;
+ case 4:
+ {
+ const uint *elt_ui = (const uint *) draw->pt.user.elts;
+ PRIM_RESTART_LOOP(elt_ui);
+ }
+ break;
+ default:
+ assert(0 && "bad eltSize in draw_arrays()");
+ }
+ }
+ else {
+ /* Non-indexed prims (draw_arrays).
+ * Primitive restart should have been handled in the state tracker.
+ */
+ draw_pt_arrays(draw, prim, start, count);
+ }
+}
+
+
+
/**
* Non-instanced drawing.
* \sa draw_arrays_instanced
/**
* Instanced drawing.
- * draw_set_mapped_element_buffer must be called before calling this function.
* \sa draw_vbo
*/
void
info.count = count;
info.start_instance = startInstance;
info.instance_count = instanceCount;
-
- info.indexed = (draw->pt.user.elts != NULL);
- info.index_bias = draw->pt.user.eltBias;
- info.min_index = draw->pt.user.min_index;
- info.max_index = draw->pt.user.max_index;
+ info.min_index = start;
+ info.max_index = start + count - 1;
draw_vbo(draw, &info);
}
+/**
+ * Resolve true values within pipe_draw_info.
+ * If we're rendering from transform feedback/stream output
+ * buffers both the count and max_index need to be computed
+ * from the attached stream output target.
+ */
+static void
+resolve_draw_info(const struct pipe_draw_info *raw_info,
+ struct pipe_draw_info *info)
+{
+ memcpy(info, raw_info, sizeof(struct pipe_draw_info));
+
+ if (raw_info->count_from_stream_output) {
+ struct draw_so_target *target =
+ (struct draw_so_target *)info->count_from_stream_output;
+ info->count = target->emitted_vertices;
+
+ /* Stream output draw can not be indexed */
+ debug_assert(!info->indexed);
+ info->max_index = info->count - 1;
+ }
+}
/**
* Draw vertex arrays.
* This is the main entrypoint into the drawing module. If drawing an indexed
- * primitive, the draw_set_index_buffer() and draw_set_mapped_index_buffer()
- * functions should have already been called to specify the element/index
- * buffer information.
+ * primitive, the draw_set_indexes() function should have already been called
+ * to specify the element/index buffer information.
*/
void
draw_vbo(struct draw_context *draw,
const struct pipe_draw_info *info)
{
- unsigned reduced_prim = u_reduced_prim(info->mode);
unsigned instance;
+ unsigned index_limit;
+ unsigned count;
+ struct pipe_draw_info resolved_info;
+
+ resolve_draw_info(info, &resolved_info);
+ info = &resolved_info;
assert(info->instance_count > 0);
if (info->indexed)
assert(draw->pt.user.elts);
-
- draw->pt.user.eltSize =
- (info->indexed) ? draw->pt.index_buffer.index_size : 0;
+
+ count = info->count;
draw->pt.user.eltBias = info->index_bias;
draw->pt.user.min_index = info->min_index;
draw->pt.user.max_index = info->max_index;
-
- if (reduced_prim != draw->reduced_prim) {
- draw_do_flush(draw, DRAW_FLUSH_STATE_CHANGE);
- draw->reduced_prim = reduced_prim;
- }
+ draw->pt.user.eltSize = info->indexed ? draw->pt.user.eltSizeIB : 0;
if (0)
debug_printf("draw_vbo(mode=%u start=%u count=%u):\n",
}
debug_printf("Buffers:\n");
for (i = 0; i < draw->pt.nr_vertex_buffers; i++) {
- debug_printf(" %u: stride=%u maxindex=%u offset=%u ptr=%p\n",
+ debug_printf(" %u: stride=%u offset=%u ptr=%p\n",
i,
draw->pt.vertex_buffer[i].stride,
- draw->pt.vertex_buffer[i].max_index,
draw->pt.vertex_buffer[i].buffer_offset,
draw->pt.user.vbuffer[i]);
}
if (0)
draw_print_arrays(draw, info->mode, info->start, MIN2(info->count, 20));
+ index_limit = util_draw_max_index(draw->pt.vertex_buffer,
+ draw->pt.vertex_element,
+ draw->pt.nr_vertex_elements,
+ info);
+
+ if (index_limit == 0) {
+ /* one of the buffers is too small to do any valid drawing */
+ debug_warning("draw: VBO too small to draw anything\n");
+ return;
+ }
+
+ /* If we're collecting stats then make sure we start from scratch */
+ if (draw->collect_statistics) {
+ memset(&draw->statistics, 0, sizeof(draw->statistics));
+ }
+
+ draw->pt.max_index = index_limit - 1;
+
+ /*
+ * TODO: We could use draw->pt.max_index to further narrow
+ * the min_index/max_index hints given by the state tracker.
+ */
+
for (instance = 0; instance < info->instance_count; instance++) {
draw->instance_id = instance + info->start_instance;
- draw_pt_arrays(draw, info->mode, info->start, info->count);
+
+ draw_new_instance(draw);
+
+ if (info->primitive_restart) {
+ draw_pt_arrays_restart(draw, info);
+ }
+ else {
+ draw_pt_arrays(draw, info->mode, info->start, count);
+ }
+ }
+
+ /* If requested emit the pipeline statistics for this run */
+ if (draw->collect_statistics) {
+ draw->render->pipeline_statistics(draw->render, &draw->statistics);
}
}
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