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Minor vertex processing optimizations (#490)

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* Minor vertex processing optimizations

* Only cache global light if lighting is enabled
This commit is contained in:
Khangaroo 2024-11-12 22:27:43 -05:00 committed by GitHub
parent fff34af6ac
commit d2aaeb23e9
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GPG key ID: B5690EEEBB952194
2 changed files with 45 additions and 12 deletions
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56
src/pc/gfx/gfx_pc.c
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@ -6,6 +6,10 @@
#include <stdbool.h>
#include <assert.h>
#ifdef __SSE__
#include <xmmintrin.h>
#endif
#define STB_IMAGE_IMPLEMENTATION
#include <stb/stb_image.h>
@ -106,8 +110,8 @@ static struct RSP {
float modelview_matrix_stack[11][4][4];
uint8_t modelview_matrix_stack_size;
float MP_matrix[4][4];
float P_matrix[4][4];
ALIGNED16 float MP_matrix[4][4];
ALIGNED16 float P_matrix[4][4];
Light_t current_lights[MAX_LIGHTS + 1];
float current_lights_coeffs[MAX_LIGHTS][3];
@ -760,19 +764,46 @@ static void gfx_sp_pop_matrix(uint32_t count) {
}
static float gfx_adjust_x_for_aspect_ratio(float x) {
return x * (4.0f / 3.0f) / ((float)gfx_current_dimensions.width / (float)gfx_current_dimensions.height);
return x * gfx_current_dimensions.x_adjust_ratio;
}
static void OPTIMIZE_O3 gfx_sp_vertex(size_t n_vertices, size_t dest_index, const Vtx *vertices, bool luaVertexColor) {
float globalLightCached[2][3];
if (rsp.geometry_mode & G_LIGHTING) {
for (int i = 0; i < 2; i++) {
for (int j = 0; j < 3; j++)
globalLightCached[i][j] = gLightingColor[i][j] / 255.0f;
}
}
#ifdef __SSE__
__m128 mat0 = _mm_load_ps(rsp.MP_matrix[0]);
__m128 mat1 = _mm_load_ps(rsp.MP_matrix[1]);
__m128 mat2 = _mm_load_ps(rsp.MP_matrix[2]);
__m128 mat3 = _mm_load_ps(rsp.MP_matrix[3]);
#endif
for (size_t i = 0; i < n_vertices; i++, dest_index++) {
const Vtx_t *v = &vertices[i].v;
const Vtx_tn *vn = &vertices[i].n;
struct LoadedVertex *d = &rsp.loaded_vertices[dest_index];
#ifdef __SSE__
__m128 ob0 = _mm_set1_ps(v->ob[0]);
__m128 ob1 = _mm_set1_ps(v->ob[1]);
__m128 ob2 = _mm_set1_ps(v->ob[2]);
__m128 pos = _mm_add_ps(_mm_add_ps(_mm_add_ps(_mm_mul_ps(ob0, mat0), _mm_mul_ps(ob1, mat1)), _mm_mul_ps(ob2, mat2)), mat3);
float x = pos[0];
float y = pos[1];
float z = pos[2];
float w = pos[3];
#else
float x = v->ob[0] * rsp.MP_matrix[0][0] + v->ob[1] * rsp.MP_matrix[1][0] + v->ob[2] * rsp.MP_matrix[2][0] + rsp.MP_matrix[3][0];
float y = v->ob[0] * rsp.MP_matrix[0][1] + v->ob[1] * rsp.MP_matrix[1][1] + v->ob[2] * rsp.MP_matrix[2][1] + rsp.MP_matrix[3][1];
float z = v->ob[0] * rsp.MP_matrix[0][2] + v->ob[1] * rsp.MP_matrix[1][2] + v->ob[2] * rsp.MP_matrix[2][2] + rsp.MP_matrix[3][2];
float w = v->ob[0] * rsp.MP_matrix[0][3] + v->ob[1] * rsp.MP_matrix[1][3] + v->ob[2] * rsp.MP_matrix[2][3] + rsp.MP_matrix[3][3];
#endif
x = gfx_adjust_x_for_aspect_ratio(x);
@ -792,9 +823,9 @@ static void OPTIMIZE_O3 gfx_sp_vertex(size_t n_vertices, size_t dest_index, cons
rsp.lights_changed = false;
}
int r = rsp.current_lights[rsp.current_num_lights - 1].col[0] * gLightingColor[1][0] / 255.0f;
int g = rsp.current_lights[rsp.current_num_lights - 1].col[1] * gLightingColor[1][1] / 255.0f;
int b = rsp.current_lights[rsp.current_num_lights - 1].col[2] * gLightingColor[1][2] / 255.0f;
float r = rsp.current_lights[rsp.current_num_lights - 1].col[0] * globalLightCached[1][0];
float g = rsp.current_lights[rsp.current_num_lights - 1].col[1] * globalLightCached[1][1];
float b = rsp.current_lights[rsp.current_num_lights - 1].col[2] * globalLightCached[1][2];
for (int32_t i = 0; i < rsp.current_num_lights - 1; i++) {
float intensity = 0;
@ -803,15 +834,15 @@ static void OPTIMIZE_O3 gfx_sp_vertex(size_t n_vertices, size_t dest_index, cons
intensity += vn->n[2] * rsp.current_lights_coeffs[i][2];
intensity /= 127.0f;
if (intensity > 0.0f) {
r += intensity * rsp.current_lights[i].col[0] * gLightingColor[0][0] / 255.0f;
g += intensity * rsp.current_lights[i].col[1] * gLightingColor[0][1] / 255.0f;
b += intensity * rsp.current_lights[i].col[2] * gLightingColor[0][2] / 255.0f;
r += intensity * rsp.current_lights[i].col[0] * globalLightCached[0][0];
g += intensity * rsp.current_lights[i].col[1] * globalLightCached[0][1];
b += intensity * rsp.current_lights[i].col[2] * globalLightCached[0][2];
}
}
d->color.r = r > 255 ? 255 : r;
d->color.g = g > 255 ? 255 : g;
d->color.b = b > 255 ? 255 : b;
d->color.r = r > 255.0f ? 255 : (uint8_t)r;
d->color.g = g > 255.0f ? 255 : (uint8_t)g;
d->color.b = b > 255.0f ? 255 : (uint8_t)b;
if (rsp.geometry_mode & G_TEXTURE_GEN) {
float dotx = 0, doty = 0;
@ -1823,6 +1854,7 @@ void gfx_start_frame(void) {
gfx_current_dimensions.height = 1;
}
gfx_current_dimensions.aspect_ratio = ((float)gfx_current_dimensions.width / (float)gfx_current_dimensions.height);
gfx_current_dimensions.x_adjust_ratio = (4.0f / 3.0f) / gfx_current_dimensions.aspect_ratio;
}
void gfx_run(Gfx *commands) {

1
src/pc/gfx/gfx_pc.h
View file

@ -9,6 +9,7 @@ struct GfxWindowManagerAPI;
struct GfxDimensions {
uint32_t width, height;
float aspect_ratio;
float x_adjust_ratio;
};
extern struct GfxDimensions gfx_current_dimensions;