#include "util/u_math.h"
#include "util/u_prim.h"
#include "util/u_format.h"
+#include "util/u_draw.h"
DEBUG_GET_ONCE_BOOL_OPTION(draw_fse, "DRAW_FSE", FALSE)
DEBUG_GET_ONCE_BOOL_OPTION(draw_no_fse, "DRAW_NO_FSE", FALSE)
-#ifdef HAVE_LLVM
-DEBUG_GET_ONCE_BOOL_OPTION(draw_use_llvm, "DRAW_USE_LLVM", TRUE)
-#endif
/* Overall we split things into:
* - frontend -- prepare fetch_elts, draw_elts - eg vsplit
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;
}
return FALSE;
#if HAVE_LLVM
- if (debug_get_option_draw_use_llvm())
+ if (draw->llvm)
draw->pt.middle.llvm = draw_pt_fetch_pipeline_or_emit_llvm( draw );
#endif
uint ii = 0;
uint j;
- if (draw->pt.user.elts) {
+ 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 *) draw->pt.user.elts;
+ const ubyte *elem = (const ubyte *) elts;
ii = elem[start + i];
}
break;
case 2:
{
- const ushort *elem = (const ushort *) draw->pt.user.elts;
+ const ushort *elem = (const ushort *) elts;
ii = elem[start + i];
}
break;
case 4:
{
- const uint *elem = (const uint *) draw->pt.user.elts;
+ const uint *elem = (const uint *) 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.elts) {
+ /* 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
/**
- * Draw vertex arrays.
- * This is the main entrypoint into the drawing module.
- * If drawing an indexed primitive, the draw_set_mapped_element_buffer_range()
- * function should have already been called to specify the element/index buffer
- * information.
- *
- * \param prim one of PIPE_PRIM_x
- * \param start index of first vertex to draw
- * \param count number of vertices to draw
- * \param startInstance number for the first primitive instance (usually 0).
- * \param instanceCount number of instances to draw (1=non-instanced)
+ * Instanced drawing.
+ * \sa draw_vbo
*/
void
draw_arrays_instanced(struct draw_context *draw,
unsigned startInstance,
unsigned instanceCount)
{
- unsigned reduced_prim = u_reduced_prim(mode);
+ struct pipe_draw_info info;
+
+ util_draw_init_info(&info);
+
+ info.mode = mode;
+ info.start = start;
+ info.count = count;
+ info.start_instance = startInstance;
+ info.instance_count = instanceCount;
+
+ info.indexed = (draw->pt.user.elts != NULL);
+ if (!info.indexed) {
+ info.min_index = start;
+ info.max_index = start + count - 1;
+ }
+
+ draw_vbo(draw, &info);
+}
+
+
+/**
+ * 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.
+ */
+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;
- assert(instanceCount > 0);
+ 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;
+
+ 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);
}
if (0)
- debug_printf("draw_arrays(mode=%u start=%u count=%u):\n",
- mode, start, count);
+ debug_printf("draw_vbo(mode=%u start=%u count=%u):\n",
+ info->mode, info->start, info->count);
if (0)
tgsi_dump(draw->vs.vertex_shader->state.tokens, 0);
}
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, mode, start, MIN2(count, 20));
+ draw_print_arrays(draw, info->mode, info->start, MIN2(info->count, 20));
+
+ index_limit = util_draw_max_index(draw->pt.vertex_buffer,
+ draw->pt.nr_vertex_buffers,
+ 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;
+ }
- for (instance = 0; instance < instanceCount; instance++) {
- draw->instance_id = instance + startInstance;
- draw_pt_arrays(draw, mode, start, count);
+ 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;
+
+ if (info->primitive_restart) {
+ draw_pt_arrays_restart(draw, info);
+ }
+ else {
+ draw_pt_arrays(draw, info->mode, info->start, info->count);
+ }
}
}
projects / mesa.git / blobdiff