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-rw-r--r--src/gallium/drivers/nouveau/nouveau_util.h100
-rw-r--r--src/gallium/drivers/nv50/nv50_vbo.c185
2 files changed, 201 insertions, 84 deletions
diff --git a/src/gallium/drivers/nouveau/nouveau_util.h b/src/gallium/drivers/nouveau/nouveau_util.h
index a10114beab..7f16e31c3f 100644
--- a/src/gallium/drivers/nouveau/nouveau_util.h
+++ b/src/gallium/drivers/nouveau/nouveau_util.h
@@ -88,4 +88,104 @@ static INLINE unsigned log2i(unsigned i)
return r;
}
+struct u_split_prim {
+ void *priv;
+ void (*emit)(void *priv, unsigned start, unsigned count);
+ void (*edge)(void *priv, boolean enabled);
+
+ unsigned mode;
+ unsigned start;
+ unsigned p_start;
+ unsigned p_end;
+
+ int repeat_first:1;
+ int close_first:1;
+ int edgeflag_off:1;
+};
+
+static inline void
+u_split_prim_init(struct u_split_prim *s,
+ unsigned mode, unsigned start, unsigned count)
+{
+ if (mode == PIPE_PRIM_LINE_LOOP) {
+ s->mode = PIPE_PRIM_LINE_STRIP;
+ s->close_first = 1;
+ } else {
+ s->mode = mode;
+ s->close_first = 0;
+ }
+ s->start = start;
+ s->p_start = start;
+ s->p_end = start + count;
+ s->edgeflag_off = 0;
+ s->repeat_first = 0;
+}
+
+static INLINE boolean
+u_split_prim_next(struct u_split_prim *s, unsigned max_verts)
+{
+ int repeat = 0;
+
+ if (s->repeat_first) {
+ s->emit(s->priv, s->start, 1);
+ max_verts--;
+ if (s->edgeflag_off) {
+ s->edge(s->priv, TRUE);
+ s->edgeflag_off = FALSE;
+ }
+ }
+
+ if (s->p_start + s->close_first + max_verts >= s->p_end) {
+ s->emit(s->priv, s->p_start, s->p_end - s->p_start);
+ if (s->close_first)
+ s->emit(s->priv, s->start, 1);
+ return TRUE;
+ }
+
+ switch (s->mode) {
+ case PIPE_PRIM_LINES:
+ max_verts &= ~1;
+ break;
+ case PIPE_PRIM_LINE_STRIP:
+ repeat = 1;
+ break;
+ case PIPE_PRIM_POLYGON:
+ max_verts--;
+ s->emit(s->priv, s->p_start, max_verts);
+ s->edge(s->priv, FALSE);
+ s->emit(s->priv, s->p_start + max_verts, 1);
+ s->p_start += max_verts;
+ s->repeat_first = TRUE;
+ s->edgeflag_off = TRUE;
+ return FALSE;
+ case PIPE_PRIM_TRIANGLES:
+ max_verts = max_verts - (max_verts % 3);
+ break;
+ case PIPE_PRIM_TRIANGLE_STRIP:
+ /* to ensure winding stays correct, always split
+ * on an even number of generated triangles
+ */
+ max_verts = max_verts & ~1;
+ repeat = 2;
+ break;
+ case PIPE_PRIM_TRIANGLE_FAN:
+ s->repeat_first = TRUE;
+ repeat = 1;
+ break;
+ case PIPE_PRIM_QUADS:
+ max_verts &= ~3;
+ break;
+ case PIPE_PRIM_QUAD_STRIP:
+ max_verts &= ~1;
+ repeat = 2;
+ break;
+ default:
+ break;
+ }
+
+ s->emit (s->priv, s->p_start, max_verts);
+ s->p_start += (max_verts - repeat);
+ return FALSE;
+}
+
#endif
diff --git a/src/gallium/drivers/nv50/nv50_vbo.c b/src/gallium/drivers/nv50/nv50_vbo.c
index 54a2fa730a..8f3c1aaf46 100644
--- a/src/gallium/drivers/nv50/nv50_vbo.c
+++ b/src/gallium/drivers/nv50/nv50_vbo.c
@@ -25,6 +25,7 @@
#include "util/u_inlines.h"
#include "util/u_format.h"
+#include "nouveau/nouveau_util.h"
#include "nv50_context.h"
#define NV50_USING_LOATHED_EDGEFLAG(ctx) ((ctx)->vertprog->cfg.edgeflag_in < 16)
@@ -251,85 +252,83 @@ nv50_draw_arrays(struct pipe_context *pipe, unsigned mode, unsigned start,
nv50_draw_arrays_instanced(pipe, mode, start, count, 0, 1);
}
-static INLINE boolean
-nv50_draw_elements_inline_u08(struct nv50_context *nv50, uint8_t *map,
- unsigned start, unsigned count)
-{
- struct nouveau_channel *chan = nv50->screen->tesla->channel;
- struct nouveau_grobj *tesla = nv50->screen->tesla;
+struct inline_ctx {
+ struct nv50_context *nv50;
+ void *map;
+};
- map += start;
+static void
+inline_elt08(void *priv, unsigned start, unsigned count)
+{
+ struct inline_ctx *ctx = priv;
+ struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+ struct nouveau_channel *chan = tesla->channel;
+ uint8_t *map = (uint8_t *)ctx->map + start;
if (count & 1) {
BEGIN_RING(chan, tesla, NV50TCL_VB_ELEMENT_U32, 1);
OUT_RING (chan, map[0]);
map++;
- count--;
+ count &= ~1;
}
- while (count) {
- unsigned nr = count > 2046 ? 2046 : count;
- int i;
-
- BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U16, nr >> 1);
- for (i = 0; i < nr; i += 2)
- OUT_RING (chan, (map[i + 1] << 16) | map[i]);
+ count >>= 1;
+ if (!count)
+ return;
- count -= nr;
- map += nr;
+ BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U16, count);
+ while (count--) {
+ OUT_RING(chan, (map[1] << 16) | map[0]);
+ map += 2;
}
- return TRUE;
}
-static INLINE boolean
-nv50_draw_elements_inline_u16(struct nv50_context *nv50, uint16_t *map,
- unsigned start, unsigned count)
+static void
+inline_elt16(void *priv, unsigned start, unsigned count)
{
- struct nouveau_channel *chan = nv50->screen->tesla->channel;
- struct nouveau_grobj *tesla = nv50->screen->tesla;
-
- map += start;
+ struct inline_ctx *ctx = priv;
+ struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+ struct nouveau_channel *chan = tesla->channel;
+ uint16_t *map = (uint16_t *)ctx->map + start;
if (count & 1) {
BEGIN_RING(chan, tesla, NV50TCL_VB_ELEMENT_U32, 1);
OUT_RING (chan, map[0]);
+ count &= ~1;
map++;
- count--;
}
- while (count) {
- unsigned nr = count > 2046 ? 2046 : count;
- int i;
-
- BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U16, nr >> 1);
- for (i = 0; i < nr; i += 2)
- OUT_RING (chan, (map[i + 1] << 16) | map[i]);
+ count >>= 1;
+ if (!count)
+ return;
- count -= nr;
- map += nr;
+ BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U16, count);
+ while (count--) {
+ OUT_RING(chan, (map[1] << 16) | map[0]);
+ map += 2;
}
- return TRUE;
}
-static INLINE boolean
-nv50_draw_elements_inline_u32(struct nv50_context *nv50, uint32_t *map,
- unsigned start, unsigned count)
+static void
+inline_elt32(void *priv, unsigned start, unsigned count)
{
- struct nouveau_channel *chan = nv50->screen->tesla->channel;
- struct nouveau_grobj *tesla = nv50->screen->tesla;
-
- map += start;
+ struct inline_ctx *ctx = priv;
+ struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+ struct nouveau_channel *chan = tesla->channel;
- while (count) {
- unsigned nr = count > 2047 ? 2047 : count;
+ BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U32, count);
+ OUT_RINGp (chan, (uint32_t *)ctx->map + start, count);
+}
- BEGIN_RING_NI(chan, tesla, NV50TCL_VB_ELEMENT_U32, nr);
- OUT_RINGp (chan, map, nr);
+static void
+inline_edgeflag(void *priv, boolean enabled)
+{
+ struct inline_ctx *ctx = priv;
+ struct nouveau_grobj *tesla = ctx->nv50->screen->tesla;
+ struct nouveau_channel *chan = tesla->channel;
- count -= nr;
- map += nr;
- }
- return TRUE;
+ BEGIN_RING(chan, tesla, NV50TCL_EDGEFLAG_ENABLE, 1);
+ OUT_RING (chan, enabled ? 1 : 0);
}
static void
@@ -343,51 +342,68 @@ nv50_draw_elements_inline(struct pipe_context *pipe,
struct nouveau_channel *chan = nv50->screen->tesla->channel;
struct nouveau_grobj *tesla = nv50->screen->tesla;
struct instance a[16];
- unsigned prim = nv50_prim(mode);
- void *map;
+ struct inline_ctx ctx;
+ struct u_split_prim s;
+ boolean nzi = FALSE;
+ unsigned overhead;
+
+ overhead = 16*3; /* potential instance adjustments */
+ overhead += 4; /* Begin()/End() */
+ overhead += 4; /* potential edgeflag disable/reenable */
+ overhead += 3; /* potentially 3 VTX_ELT_U16/U32 packet headers */
+
+ s.priv = &ctx;
+ if (indexSize == 1)
+ s.emit = inline_elt08;
+ else
+ if (indexSize == 2)
+ s.emit = inline_elt16;
+ else
+ s.emit = inline_elt32;
+ s.edge = inline_edgeflag;
- map = pipe_buffer_map(pscreen, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
- assert(map);
- if (!map)
+ ctx.nv50 = nv50;
+ ctx.map = pipe_buffer_map(pscreen, indexBuffer, PIPE_BUFFER_USAGE_CPU_READ);
+ assert(ctx.map);
+ if (!ctx.map)
return;
instance_init(nv50, a, startInstance);
- if (!nv50_state_validate(nv50, 0))
+ if (!nv50_state_validate(nv50, overhead + 6 + 3))
return;
BEGIN_RING(chan, tesla, NV50TCL_CB_ADDR, 2);
OUT_RING (chan, NV50_CB_AUX | (24 << 8));
OUT_RING (chan, startInstance);
while (instanceCount--) {
- if (AVAIL_RING(chan) < (7 + 16*3)) {
- FIRE_RING(chan);
- if (!nv50_state_validate(nv50, 0)) {
- assert(0);
- return;
+ unsigned max_verts;
+ boolean done;
+
+ u_split_prim_init(&s, mode, start, count);
+ do {
+ if (AVAIL_RING(chan) < (overhead + 6)) {
+ FIRE_RING(chan);
+ if (!nv50_state_validate(nv50, (overhead + 6))) {
+ assert(0);
+ return;
+ }
}
- }
- instance_step(nv50, a);
- BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
- OUT_RING (chan, prim);
- switch (indexSize) {
- case 1:
- nv50_draw_elements_inline_u08(nv50, map, start, count);
- break;
- case 2:
- nv50_draw_elements_inline_u16(nv50, map, start, count);
- break;
- case 4:
- nv50_draw_elements_inline_u32(nv50, map, start, count);
- break;
- default:
- assert(0);
- break;
- }
- BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
- OUT_RING (chan, 0);
+ max_verts = AVAIL_RING(chan) - overhead;
+ if (max_verts > 2047)
+ max_verts = 2047;
+ if (indexSize != 4)
+ max_verts <<= 1;
+ instance_step(nv50, a);
- prim |= (1 << 28);
+ BEGIN_RING(chan, tesla, NV50TCL_VERTEX_BEGIN, 1);
+ OUT_RING (chan, nv50_prim(s.mode) | (nzi ? (1<<28) : 0));
+ done = u_split_prim_next(&s, max_verts);
+ BEGIN_RING(chan, tesla, NV50TCL_VERTEX_END, 1);
+ OUT_RING (chan, 0);
+ } while (!done);
+
+ nzi = TRUE;
}
pipe_buffer_unmap(pscreen, indexBuffer);
@@ -406,7 +422,8 @@ nv50_draw_elements_instanced(struct pipe_context *pipe,
struct instance a[16];
unsigned prim = nv50_prim(mode);
- if (indexSize == 1) {
+ if (!(indexBuffer->usage & PIPE_BUFFER_USAGE_INDEX) ||
+ indexSize == 1) {
nv50_draw_elements_inline(pipe, indexBuffer, indexSize,
mode, start, count, startInstance,
instanceCount);
generated by cgit v1.2.3 (git 2.51.0) at 2025-11-04 01:23:19 +0000