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Fix casting errors

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Ahmed 2026-05-20 02:36:35 +01:00
parent 755d5a8763
commit 5c608f6984
1 changed files with 31 additions and 46 deletions
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77
examples/renderer/20-blending/blending.c
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@ -79,10 +79,6 @@ static SDL_BlendMode blend_modes[] = {
};
static const char *blend_mode_names[] = { "NONE", "BLEND", "ADD", "MOD", "MUL", "SCREEN \"CUSTOM\"" };
/* UI Functions Declarations */
static void init_panels(SDL_FRect *panels);
static void render_panels(SDL_Renderer *renderer, const SDL_FRect *panels);
SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
{
SDL_Surface *surface = NULL;
@ -98,7 +94,13 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
}
SDL_SetRenderLogicalPresentation(renderer, WINDOW_WIDTH, WINDOW_HEIGHT, SDL_LOGICAL_PRESENTATION_LETTERBOX);
init_panels(panels);
for (int row = 0; row < ROWS; row++)
{
for (int col = 0; col < COLS; col++)
{
panels[col + row*COLS] = (SDL_FRect){ col*PANEL_SIZE + col*COL_OFFSET, row*PANEL_SIZE + (row+1)*ROW_OFFSET, PANEL_SIZE, PANEL_SIZE };
}
}
/* Create 'screen blend' mode */
blend_modes[ROWS*COLS - 1] = SDL_ComposeCustomBlendMode(
@ -162,7 +164,30 @@ SDL_AppResult SDL_AppIterate(void *appstate)
SDL_RenderClear(renderer);
/* Render checkerboard panels */
render_panels(renderer, panels);
for (int i = 0; i < ROWS*COLS; i++)
{
/* Loop through the panel pixels */
for (int y = (int)panels[i].y; y < PANEL_SIZE + (int)panels[i].y; y += GRID_SIZE)
{
for (int x = (int)panels[i].x; x < PANEL_SIZE + (int)panels[i].x; x += GRID_SIZE)
{
SDL_FRect grid = { x, y, GRID_SIZE, GRID_SIZE };
bool dark = (x/GRID_SIZE + y/GRID_SIZE) % 2;
if (dark) SDL_SetRenderDrawColor(renderer, 70, 70, 70, 255); /* Darker color */
else SDL_SetRenderDrawColor(renderer, 110, 110, 110, 255); /* Lighter color */
SDL_RenderFillRect(renderer, &grid);
}
}
/* Label the blend mode */
SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
SDL_RenderDebugText(renderer, panels[i].x, panels[i].y - 15, blend_mode_names[i]);
}
/* Render panels */
SDL_RenderRects(renderer, panels, ROWS*COLS);
/* Render UI text */
SDL_RenderDebugText(renderer, WINDOW_WIDTH - 176, WINDOW_HEIGHT - 20, "UP/DOWN: CHANGE ALPHA");
@ -202,43 +227,3 @@ void SDL_AppQuit(void *appstate, SDL_AppResult result)
SDL_DestroyTexture(green_rect_texture);
SDL_DestroyTexture(blue_rect_texture);
}
static void init_panels(SDL_FRect *rects)
{
for (int row = 0; row < ROWS; row++)
{
for (int col = 0; col < COLS; col++)
{
rects[col + row*COLS] = (SDL_FRect){ col*PANEL_SIZE + col*COL_OFFSET, row*PANEL_SIZE + (row+1)*ROW_OFFSET, PANEL_SIZE, PANEL_SIZE };
}
}
}
static void render_panels(SDL_Renderer *renderer, const SDL_FRect *rects)
{
/* loop through the panels */
for (int i = 0; i < ROWS*COLS; i++)
{
/* Loop through the panel pixels */
for (int y = rects[i].y; y < PANEL_SIZE + (int)rects[i].y; y += GRID_SIZE)
{
for (int x = rects[i].x; x < PANEL_SIZE + (int)rects[i].x; x += GRID_SIZE)
{
SDL_FRect grid = { x, y, GRID_SIZE, GRID_SIZE };
bool dark = (x/GRID_SIZE + y/GRID_SIZE) % 2;
if (dark) SDL_SetRenderDrawColor(renderer, 70, 70, 70, 255); /* Darker color */
else SDL_SetRenderDrawColor(renderer, 110, 110, 110, 255); /* Lighter color */
SDL_RenderFillRect(renderer, &grid);
}
}
/* Label the blend mode */
SDL_SetRenderDrawColor(renderer, 255, 255, 255, SDL_ALPHA_OPAQUE);
SDL_RenderDebugText(renderer, rects[i].x, rects[i].y - 15, blend_mode_names[i]);
}
/* Render panels */
SDL_RenderRects(renderer, rects, ROWS*COLS);
}