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More optimisations

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This commit is contained in:
Luke Benstead 2021-09-13 19:35:53 +01:00
parent adce2c7538
commit 4ee9c3ee64
1 changed files with 73 additions and 29 deletions
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102
GL/draw.c
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@ -423,6 +423,7 @@ GL_FORCE_INLINE void genQuads(Vertex* output, GLuint count) {
GLuint i = count >> 2;
while(i--) {
PREFETCH(pen + 4);
PREFETCH(final + 4);
swapVertex(pen, final);
final->flags = GPU_CMD_VERTEX_EOL;
@ -749,6 +750,7 @@ typedef struct {
static const Float3 F3Z = {0.0f, 0.0f, 1.0f};
static const Float3 F3ZERO = {0.0f, 0.0f, 0.0f};
static const Float2 F2ZERO = {0.0f, 0.0f};
static const uint32_t U4ONE = ~0;
static void generateElementsFastPath(
SubmissionTarget* target, const GLsizei first, const GLuint count,
@ -826,12 +828,13 @@ static void generateElementsFastPath(
static void generateArraysFastPath(SubmissionTarget* target, const GLsizei first, const GLuint count) {
Vertex* start = _glSubmissionTargetStart(target);
VertexExtra* ve_start = aligned_vector_at(target->extras, 0);
const GLuint vstride = ATTRIB_POINTERS.vertex.stride;
const GLuint uvstride = ATTRIB_POINTERS.uv.stride;
const GLuint ststride = ATTRIB_POINTERS.st.stride;
const GLuint dstride = ATTRIB_POINTERS.colour.stride;
const GLuint nstride = ATTRIB_POINTERS.normal.stride;
GLuint uvstride = ATTRIB_POINTERS.uv.stride;
GLuint ststride = ATTRIB_POINTERS.st.stride;
GLuint dstride = ATTRIB_POINTERS.colour.stride;
GLuint nstride = ATTRIB_POINTERS.normal.stride;
/* Copy the pos, uv and color directly in one go */
const GLubyte* pos = (ENABLED_VERTEX_ATTRIBUTES & VERTEX_ENABLED_FLAG) ? ATTRIB_POINTERS.vertex.ptr + (first * vstride) : NULL;
@ -840,54 +843,95 @@ static void generateArraysFastPath(SubmissionTarget* target, const GLsizei first
const GLubyte* st = (ENABLED_VERTEX_ATTRIBUTES & ST_ENABLED_FLAG) ? ATTRIB_POINTERS.st.ptr + (first * ststride) : NULL;
const GLubyte* n = (ENABLED_VERTEX_ATTRIBUTES & NORMAL_ENABLED_FLAG) ? ATTRIB_POINTERS.normal.ptr + (first * nstride) : NULL;
VertexExtra* ve = aligned_vector_at(target->extras, 0);
VertexExtra* ve = ve_start;
Vertex* it = start;
const float w = 1.0f;
uint32_t i = count;
if(!pos) {
/* If we don't have vertices, do nothing */
return;
}
while(i--) {
it->flags = GPU_CMD_VERTEX;
if(!col) {
col = (GLubyte*) &U4ONE;
dstride = 0;
}
TransformVertex((const float*) pos, &w, it->xyz, &it->w);
pos += vstride;
if(!uv) {
uv = (GLubyte*) &F2ZERO;
uvstride = 0;
}
if(uv) {
MEMCPY4(it->uv, uv, sizeof(float) * 2);
if(!st) {
st = (GLubyte*) &F2ZERO;
ststride = 0;
}
if(!n) {
n = (GLubyte*) &F3Z;
nstride = 0;
}
#define BATCH_SIZE 64
int_fast32_t start_idx = 0;
int_fast32_t end_idx = BATCH_SIZE;
while(1) {
for(int_fast32_t i = start_idx; i < end_idx; ++i) {
PREFETCH(pos + vstride);
it = start + i;
it->flags = GPU_CMD_VERTEX;
TransformVertex((const float*) pos, &w, it->xyz, &it->w);
pos += vstride;
}
for(int_fast32_t i = start_idx; i < end_idx; ++i) {
PREFETCH(uv + uvstride);
it = start + i;
*((Float2*) it->uv) = *((Float2*) uv);
uv += uvstride;
} else {
*((Float2*) it->uv) = F2ZERO;
}
if(col) {
MEMCPY4(it->bgra, col, sizeof(uint32_t));
for(int_fast32_t i = start_idx; i < end_idx; ++i) {
PREFETCH(col + dstride);
it = start + i;
*((uint32_t*) it->bgra) = *((uint32_t*) col);
col += dstride;
} else {
*((uint32_t*) it->bgra) = ~0;
}
if(st) {
MEMCPY4(ve->st, st, sizeof(float) * 2);
for(int_fast32_t i = start_idx; i < end_idx; ++i) {
PREFETCH(st + ststride);
ve = ve_start + i;
*((Float2*) ve->st) = *((Float2*) st);
st += ststride;
} else {
*((Float2*) ve->st) = F2ZERO;
}
if(n) {
MEMCPY4(ve->nxyz, n, sizeof(float) * 3);
for(int_fast32_t i = start_idx; i < end_idx; ++i) {
PREFETCH(n + nstride);
ve = ve_start + i;
*((Float3*) ve->nxyz) = *((Float3*) n);
n += nstride;
} else {
*((Float3*) ve->nxyz) = F3Z;
}
it++;
ve++;
if(end_idx == count) {
break;
}
start_idx = end_idx;
PREFETCH(it + start_idx);
end_idx += BATCH_SIZE;
end_idx = MIN(end_idx, count);
}
}