v4games
/
v4k-git-backup
3
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

demo: temp F8 to switch backend

main
Dominik Madarász 2023-09-09 15:16:05 +02:00
parent dc2555af58
commit d6d0294ae5
1 changed files with 37 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

79
demos/99-temperature.c
View File

@ -1,13 +1,9 @@
#define COOK_ON_DEMAND 1
#include "v4k.h"
#define TEMP_GPU
int TEMP_GPU = 1;
#ifdef TEMP_GPU
#define TEX_WIDTH 256
// #define TEX_WIDTH 64
#else
#define TEX_WIDTH 64
#define TEX_WIDTH 1024
void temp_calc(vec4 *pixels){
// flood it
@ -28,13 +24,10 @@ void temp_calc(vec4 *pixels){
}
}
#endif
int main() {
// 75% sized, MSAAx2
window_create(50, WINDOW_SQUARE);
window_create(50, WINDOW_SQUARE|WINDOW_VSYNC_DISABLED);
window_title(__FILE__);
// window_fps_lock(1);
window_fps_lock(0);
texture_t tex;
@ -42,54 +35,56 @@ int main() {
for (int i=0; i <TEX_WIDTH*TEX_WIDTH; i++){
img[i] = vec4(0.3,0.3,0.3,1);
}
#ifdef TEMP_GPU
tex = texture_create(TEX_WIDTH, TEX_WIDTH, 4, img, TEXTURE_LINEAR|TEXTURE_FLOAT);
unsigned comp = compute(vfs_read("shaders/temperature.glsl"));
shader_bind(comp);
shader_image(tex, 0, 0, 0, READ_WRITE);
#else
tex = texture_create(TEX_WIDTH, TEX_WIDTH, 4, img, TEXTURE_LINEAR|TEXTURE_FLOAT);
#endif
while ( window_swap() && !input_down(KEY_ESC) ){
if (input(KEY_F5)) window_reload();
if (input_down(KEY_F5)) window_reload();
if (input_down(KEY_F8)) TEMP_GPU ^= 1;
#ifdef TEMP_GPU
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex.id);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, img);
#endif
for (int i=0; i <TEX_WIDTH*4; i++){
if (TEMP_GPU) {
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D, tex.id);
glGetTexImage(GL_TEXTURE_2D, 0, GL_RGBA, GL_FLOAT, img);
}
for (int i=0; i <TEX_WIDTH*64; i++){
img[i] = vec4(0,0,1,1);
img[(TEX_WIDTH - 4) * TEX_WIDTH+i] = vec4(1,0,0,1);
img[(TEX_WIDTH - 64) * TEX_WIDTH+i] = vec4(1,0,0,1);
}
int enabled = !ui_active() && !ui_hover();
vec4 mouse = enabled ? vec4(input(MOUSE_X),input(MOUSE_Y),input(MOUSE_L),input(MOUSE_R)) : vec4(0,0,0,0); // x,y,l,r
int strong = input(KEY_LSHIFT)?15:1;
int x = (int)clampf(floorf(TEX_WIDTH/(float)window_width() * mouse.x), 0, TEX_WIDTH-1);
int y = (int)clampf(floorf(TEX_WIDTH/(float)window_height() * mouse.y), 0, TEX_WIDTH-1);
int strong = input(KEY_LSHIFT)?5:1;
int x = (int)clampf(floorf(TEX_WIDTH/(float)window_width() * mouse.x), 1, TEX_WIDTH-2);
int y = (int)clampf(floorf(TEX_WIDTH/(float)window_height() * mouse.y), 1, TEX_WIDTH-2);
if (mouse.z){
img[(y*TEX_WIDTH)+x] = vec4(strong*1,0,0,1);
if (mouse.z || mouse.w){
for (int cy = -5*strong; cy <= 5*strong; ++cy) {
for (int cx = -5*strong; cx <= 5*strong; ++cx) {
int px = (int)clampf(cx+x, 1, TEX_WIDTH-2);
int py = (int)clampf(cy+y, 1, TEX_WIDTH-2);
img[(py*TEX_WIDTH)+px] = vec4(mouse.z,0,mouse.w,1);
}
}
}
if (mouse.w){
img[(y*TEX_WIDTH)+x] = vec4(0,0,strong*1,1);
if (TEMP_GPU) {
glBindTexture(GL_TEXTURE_2D, tex.id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, TEX_WIDTH, TEX_WIDTH, 0, GL_RGBA, GL_FLOAT, img);
shader_bind(comp);
compute_dispatch(TEX_WIDTH/16, TEX_WIDTH/16, 1);
image_write_barrier();
} else {
temp_calc(img);
texture_update(&tex, TEX_WIDTH, TEX_WIDTH, 4, img, TEXTURE_LINEAR|TEXTURE_FLOAT);
}
#ifdef TEMP_GPU
glBindTexture(GL_TEXTURE_2D, tex.id);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA32F, TEX_WIDTH, TEX_WIDTH, 0, GL_RGBA, GL_FLOAT, img);
shader_bind(comp);
compute_dispatch(TEX_WIDTH/16, TEX_WIDTH/16, 1);
image_write_barrier();
#else
temp_calc(img);
texture_update(&tex, TEX_WIDTH, TEX_WIDTH, 4, img, TEXTURE_LINEAR|TEXTURE_FLOAT);
#endif
fullscreen_quad_rgb(tex, 2.2);
ddraw_text2d(vec2(0,0), va("mode: %s\nimage res: %d\ninputs: %.01f %.01f %.01f %.01f %s", TEMP_GPU?"GPU compute":"CPU", TEX_WIDTH, mouse.x, mouse.y, mouse.z, mouse.w, strong>1?"lshift":""));
ddraw_text2d(vec2(0,window_height() - 20), va("delta: %.2f ms", window_delta()*1000));
}
return 0;