mirror
/
SDL
mirror of https://github.com/libsdl-org/SDL.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

testdrawchessboard: Allow using the standard render API

This commit is contained in:
Cameron Cawley 2024-05-01 22:12:08 +01:00
parent da4608ed03
commit c99670a6c9
1 changed files with 22 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
test/testdrawchessboard.c
View File

@ -12,7 +12,10 @@
This file is created by : Nitin Jain (nitin.j4@samsung.com) This file is created by : Nitin Jain (nitin.j4@samsung.com)
*/ */
/* Sample program: Draw a Chess Board by using SDL_CreateSoftwareRenderer API */ /* Sample program: Draw a Chess Board by using the SDL render API */
/* This allows testing SDL_CreateSoftwareRenderer with the window surface API. Undefine it to use the accelerated renderer instead. */
#define USE_SOFTWARE_RENDERER
#include <stdlib.h> #include <stdlib.h>
#include <stdio.h> #include <stdio.h>
@ -25,9 +28,12 @@
SDL_Window *window; SDL_Window *window;
SDL_Renderer *renderer; SDL_Renderer *renderer;
SDL_Surface *surface;
int done; int done;
#ifdef USE_SOFTWARE_RENDERER
SDL_Surface *surface;
#endif
void DrawChessBoard(void) void DrawChessBoard(void)
{ {
int row = 0, column = 0, x = 0; int row = 0, column = 0, x = 0;
@ -50,7 +56,6 @@ void DrawChessBoard(void)
SDL_RenderFillRect(renderer, &rect); SDL_RenderFillRect(renderer, &rect);
} }
} }
SDL_RenderPresent(renderer);
} }
void loop(void) void loop(void)
@ -58,6 +63,7 @@ void loop(void)
SDL_Event e; SDL_Event e;
while (SDL_PollEvent(&e)) { while (SDL_PollEvent(&e)) {
#ifdef USE_SOFTWARE_RENDERER
/* Re-create when window has been resized */ /* Re-create when window has been resized */
if ((e.type == SDL_WINDOWEVENT) && (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)) { if ((e.type == SDL_WINDOWEVENT) && (e.window.event == SDL_WINDOWEVENT_SIZE_CHANGED)) {
@ -69,6 +75,7 @@ void loop(void)
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF); SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
SDL_RenderClear(renderer); SDL_RenderClear(renderer);
} }
#endif
if (e.type == SDL_QUIT) { if (e.type == SDL_QUIT) {
done = 1; done = 1;
@ -87,11 +94,19 @@ void loop(void)
} }
} }
/* Clear the rendering surface with the specified color */
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
SDL_RenderClear(renderer);
DrawChessBoard(); DrawChessBoard();
SDL_RenderPresent(renderer);
#ifdef USE_SOFTWARE_RENDERER
/* Got everything on rendering surface, /* Got everything on rendering surface,
now Update the drawing image on window screen */ now Update the drawing image on window screen */
SDL_UpdateWindowSurface(window); SDL_UpdateWindowSurface(window);
#endif
} }
int main(int argc, char *argv[]) int main(int argc, char *argv[])
@ -111,17 +126,17 @@ int main(int argc, char *argv[])
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n", SDL_GetError()); SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Window creation fail : %s\n", SDL_GetError());
return 1; return 1;
} }
#ifdef USE_SOFTWARE_RENDERER
surface = SDL_GetWindowSurface(window); surface = SDL_GetWindowSurface(window);
renderer = SDL_CreateSoftwareRenderer(surface); renderer = SDL_CreateSoftwareRenderer(surface);
#else
renderer = SDL_CreateRenderer(window, -1, 0);
#endif
if (!renderer) { if (!renderer) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Render creation for surface fail : %s\n", SDL_GetError()); SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Render creation for surface fail : %s\n", SDL_GetError());
return 1; return 1;
} }
/* Clear the rendering surface with the specified color */
SDL_SetRenderDrawColor(renderer, 0xFF, 0xFF, 0xFF, 0xFF);
SDL_RenderClear(renderer);
/* Draw the Image on rendering surface */ /* Draw the Image on rendering surface */
done = 0; done = 0;
#ifdef __EMSCRIPTEN__ #ifdef __EMSCRIPTEN__