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comparison test/testshape.c @ 4805:de3b3455f8ec

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Put the render loop back in its right place, but with delaying functionality to keep it down to roughly 60fps, not eating up all the X11 time.
author Eli Gottlieb <eligottlieb@gmail.com>
date Mon, 19 Jul 2010 00:24:02 -0400
parents b33752266d8f
children 2ae79ed78a5a
comparison
equal deleted inserted replaced
4804:b33752266d8f 4805:de3b3455f8ec
4 #include <SDL_rect.h> 4 #include <SDL_rect.h>
5 #include <SDL_pixels.h> 5 #include <SDL_pixels.h>
6 #include <SDL_video.h> 6 #include <SDL_video.h>
7 #include <SDL_shape.h> 7 #include <SDL_shape.h>
8 #include <SDL_keysym.h> 8 #include <SDL_keysym.h>
9 #include <SDL_timer.h>
9 10
10 #define SHAPED_WINDOW_X 150 11 #define SHAPED_WINDOW_X 150
11 #define SHAPED_WINDOW_Y 150 12 #define SHAPED_WINDOW_Y 150
12 #define SHAPED_WINDOW_DIMENSION 640 13 #define SHAPED_WINDOW_DIMENSION 640
14
15 #define TICK_INTERVAL 18
13 16
14 void render(SDL_Window* window,SDL_Texture *texture,SDL_Rect texture_dimensions) { 17 void render(SDL_Window* window,SDL_Texture *texture,SDL_Rect texture_dimensions) {
15 SDL_SelectRenderer(window); 18 SDL_SelectRenderer(window);
16 19
17 //Clear render-target to blue. 20 //Clear render-target to blue.
20 23
21 //Render the texture. 24 //Render the texture.
22 SDL_RenderCopy(texture,&texture_dimensions,&texture_dimensions); 25 SDL_RenderCopy(texture,&texture_dimensions,&texture_dimensions);
23 26
24 SDL_RenderPresent(); 27 SDL_RenderPresent();
28 }
29
30 static Uint32 next_time;
31
32 Uint32 time_left() {
33 Uint32 now = SDL_GetTicks();
34 if(next_time <= now)
35 return 0;
36 else
37 return next_time - now;
25 } 38 }
26 39
27 int main(int argc,char** argv) { 40 int main(int argc,char** argv) {
28 if(argc < 2) { 41 if(argc < 2) {
29 printf("SDL_Shape requires at least one bitmap file as argument.\n"); 42 printf("SDL_Shape requires at least one bitmap file as argument.\n");
104 Uint32 format = 0,access = 0; 117 Uint32 format = 0,access = 0;
105 SDL_Rect texture_dimensions = {0,0,0,0}; 118 SDL_Rect texture_dimensions = {0,0,0,0};
106 SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h); 119 SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h);
107 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h); 120 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
108 SDL_SetWindowShape(window,pictures[current_picture],&mode); 121 SDL_SetWindowShape(window,pictures[current_picture],&mode);
109 render(window,textures[current_picture],texture_dimensions); 122 next_time = SDL_GetTicks() + TICK_INTERVAL;
110 while(should_exit == 0) { 123 while(should_exit == 0) {
111 event_pending = SDL_PollEvent(&event); 124 event_pending = SDL_PollEvent(&event);
112 if(event_pending == 1) { 125 if(event_pending == 1) {
113 if(event.type == SDL_KEYDOWN) { 126 if(event.type == SDL_KEYDOWN) {
114 button_down = 1; 127 button_down = 1;
121 if(current_picture >= num_pictures) 134 if(current_picture >= num_pictures)
122 current_picture = 0; 135 current_picture = 0;
123 SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h); 136 SDL_QueryTexture(textures[current_picture],&format,&access,&texture_dimensions.w,&texture_dimensions.h);
124 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h); 137 SDL_SetWindowSize(window,texture_dimensions.w,texture_dimensions.h);
125 SDL_SetWindowShape(window,pictures[current_picture],&mode); 138 SDL_SetWindowShape(window,pictures[current_picture],&mode);
126 render(window,textures[current_picture],texture_dimensions);
127
128 } 139 }
129 if(event.type == SDL_QUIT) 140 if(event.type == SDL_QUIT)
130 should_exit = 1; 141 should_exit = 1;
131 event_pending = 0; 142 event_pending = 0;
132 } 143 }
144 render(window,textures[current_picture],texture_dimensions);
145 SDL_Delay(time_left());
146 next_time += TICK_INTERVAL;
133 } 147 }
134 148
135 //Free the textures. 149 //Free the textures.
136 for(i=0;i<num_pictures;i++) 150 for(i=0;i<num_pictures;i++)
137 SDL_DestroyTexture(textures[i]); 151 SDL_DestroyTexture(textures[i]);