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Add SDL_RenderDebugTextF & SDL_RenderDebugTextV

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This should make it easier to quickly put important numbers and such on
the screen without having to format them into a string manually.
This commit is contained in:
williamistGitHub 2024-12-07 00:14:55 -05:00 • committed by Ryan C. Gordon
parent 5608bf5866
commit 1d0e28a5b3
8 changed files with 126 additions and 2 deletions
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47
src/render/SDL_render.c
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@ -3995,7 +3995,7 @@ bool SDL_RenderTextureAffine(SDL_Renderer *renderer, SDL_Texture *texture,
xy[0] = real_dstrect.x;
xy[1] = real_dstrect.y;
}
// (maxx, miny)
if (right) {
xy[2] = right->x;
@ -4025,7 +4025,7 @@ bool SDL_RenderTextureAffine(SDL_Renderer *renderer, SDL_Texture *texture,
result = QueueCmdGeometry(
renderer, texture,
xy, xy_stride,
xy, xy_stride,
&texture->color, 0 /* color_stride */,
uv, uv_stride,
num_vertices, indices, num_indices, size_indices,
@ -5589,3 +5589,46 @@ bool SDL_RenderDebugText(SDL_Renderer *renderer, float x, float y, const char *s
return result;
}
bool SDL_RenderDebugTextF(SDL_Renderer *renderer, float x, float y, SDL_PRINTF_FORMAT_STRING const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
bool result = SDL_RenderDebugTextV(renderer, x, y, fmt, ap);
va_end(ap);
return result;
}
bool SDL_RenderDebugTextV(SDL_Renderer *renderer, float x, float y, SDL_PRINTF_FORMAT_STRING const char *fmt, va_list ap)
{
// Probably for the best to check this here, so we don't do a bunch of string formatting before realizing the renderer isn't even valid...
CHECK_RENDERER_MAGIC(renderer, false);
va_list apc;
va_copy(apc, ap); // vsnprintf mangles ap, so copy it so it can be used again later
int len = SDL_vsnprintf(NULL, 0, fmt, apc);
va_end(apc);
if (len < 0) {
return SDL_SetError("Failed to format debug text");
}
char *buf = SDL_malloc(len + 1);
if (buf == NULL) {
return SDL_OutOfMemory();
}
len = SDL_vsnprintf(buf, len + 1, fmt, ap);
if (len < 0) {
SDL_free(buf);
return SDL_SetError("Failed to format debug text");
}
bool result = SDL_RenderDebugText(renderer, x, y, buf);
SDL_free(buf);
return result;
}