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vbo: don't store glVertex values temporarily into exec

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This improves performance by 4.3% in Viewperf11/Catia, first scene.

Reviewed-by: Mathias Fröhlich <mathias.froehlich@web.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3766>
This commit is contained in:
Marek Olšák
2020-01-22 19:55:05 -05:00
committed by Marge Bot
parent cd7241c4f8
commit 1f6e53e243
2 changed files with 49 additions and 10 deletions
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1
src/mesa/vbo/vbo_exec.h
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@@ -80,6 +80,7 @@ struct vbo_exec_context
struct gl_buffer_object *bufferobj;
GLuint vertex_size; /* in dwords */
GLuint vertex_size_no_pos;
struct _mesa_prim prim[VBO_MAX_PRIM];
GLuint prim_count;

58
src/mesa/vbo/vbo_exec_api.c
View File

@@ -294,7 +294,9 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
memcpy(old_attrptr, exec->vtx.attrptr, sizeof(old_attrptr));
}
if (unlikely(oldSize)) {
bool repopulate = unlikely(oldSize) || (attr != 0 && exec->vtx.attr[0].size);
if (repopulate) {
/* Do a COPY_TO_CURRENT to ensure back-copying works for the
* case when the attribute already exists in the vertex and is
* having its size increased.
@@ -315,17 +317,21 @@ vbo_exec_wrap_upgrade_vertex(struct vbo_exec_context *exec,
*/
exec->vtx.attr[attr].size = newSize;
exec->vtx.vertex_size += newSize - oldSize;
exec->vtx.vertex_size_no_pos = exec->vtx.vertex_size - exec->vtx.attr[0].size;
exec->vtx.max_vert = vbo_compute_max_verts(exec);
exec->vtx.vert_count = 0;
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
exec->vtx.enabled |= BITFIELD64_BIT(attr);
if (unlikely(oldSize)) {
if (repopulate) {
/* Size changed, recalculate all the attrptr[] values
*/
fi_type *tmp = exec->vtx.vertex;
for (i = 0 ; i < VBO_ATTRIB_MAX ; i++) {
/* Iterate backwards to make the position last, because glVertex
* expects that.
*/
for (int i = VBO_ATTRIB_MAX - 1; i >= 0; i--) {
if (exec->vtx.attr[i].size) {
exec->vtx.attrptr[i] = tmp;
tmp += exec->vtx.attr[i].size;
@@ -453,6 +459,19 @@ is_vertex_position(const struct gl_context *ctx, GLuint index)
_mesa_inside_begin_end(ctx));
}
/* Write a 64-bit value into a 32-bit pointer by preserving endianness. */
#if UTIL_ARCH_LITTLE_ENDIAN
#define SET_64BIT(dst32, u64) do { \
*(dst32)++ = (u64); \
*(dst32)++ = (uint64_t)(u64) >> 32; \
} while (0)
#else
#define SET_64BIT(dst32, u64) do { \
*(dst32)++ = (uint64_t)(u64) >> 32; \
*(dst32)++ = (u64); \
} while (0)
#endif
/**
* This macro is used to implement all the glVertex, glColor, glTexCoord,
@@ -476,8 +495,8 @@ do { \
vbo_exec_fixup_vertex(ctx, A, N * sz, T); \
} \
\
/* store vertex attribute in vertex buffer */ \
{ \
/* store a copy of the attribute in exec except for glVertex */ \
if ((A) != 0) { \
C *dest = (C *)exec->vtx.attrptr[A]; \
if (N>0) dest[0] = V0; \
if (N>1) dest[1] = V1; \
@@ -488,13 +507,32 @@ do { \
\
if ((A) == 0) { \
/* This is a glVertex call */ \
GLuint i; \
uint32_t *dst = (uint32_t *)exec->vtx.buffer_ptr; \
uint32_t *src = (uint32_t *)exec->vtx.vertex; \
unsigned vertex_size_no_pos = exec->vtx.vertex_size_no_pos; \
\
/* copy 32-bit words */ \
for (i = 0; i < exec->vtx.vertex_size; i++) \
exec->vtx.buffer_ptr[i] = exec->vtx.vertex[i]; \
/* Copy over attributes from exec. */ \
for (unsigned i = 0; i < vertex_size_no_pos; i++) \
*dst++ = *src++; \
\
exec->vtx.buffer_ptr += exec->vtx.vertex_size; \
/* Store the position, which is always last and can have 32 or */ \
/* 64 bits per channel. */ \
if (sizeof(C) == 4) { \
if (N > 0) *dst++ = V0; \
if (N > 1) *dst++ = V1; \
if (N > 2) *dst++ = V2; \
if (N > 3) *dst++ = V3; \
} else { \
/* 64 bits: dst can be unaligned, so copy each 4-byte word */ \
/* separately */ \
if (N > 0) SET_64BIT(dst, V0); \
if (N > 1) SET_64BIT(dst, V1); \
if (N > 2) SET_64BIT(dst, V2); \
if (N > 3) SET_64BIT(dst, V3); \
} \
\
/* dst now points at the beginning of the next vertex */ \
exec->vtx.buffer_ptr = (fi_type*)dst; \
\
/* Set FLUSH_STORED_VERTICES to indicate that there's now */ \
/* something to draw (not just updating a color or texcoord).*/ \