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[Renderers/Raylib] Reuse memory in raylib renderer for temporary string allocations

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Nic Barker 2025-03-13 09:51:44 +13:00 committed by GitHub
commit bee93bc7ba
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4 changed files with 35 additions and 6 deletions
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2
examples/introducing-clay-video-demo/main.c
View File

@ -50,4 +50,6 @@ int main(void) {
Clay_Raylib_Render(renderCommands, fonts);
EndDrawing();
}
// This function is new since the video was published
Clay_Raylib_Close();
}

2
examples/raylib-multi-context/main.c
View File

@ -72,4 +72,6 @@ int main(void) {
Clay_Raylib_Render(renderCommandsBottom, fonts);
EndDrawing();
}
Clay_Raylib_Close();
}

1
examples/raylib-sidebar-scrolling-container/main.c
View File

@ -250,5 +250,6 @@ int main(void) {
}
UpdateDrawFrame(fonts);
}
Clay_Raylib_Close();
return 0;
}

36
renderers/raylib/clay_renderer_raylib.c
View File

@ -125,6 +125,21 @@ void Clay_Raylib_Initialize(int width, int height, const char *title, unsigned i
// EnableEventWaiting();
}
// A MALLOC'd buffer, that we keep modifying inorder to save from so many Malloc and Free Calls.
// Call Clay_Raylib_Close() to free
static char *temp_render_buffer = NULL;
static int temp_render_buffer_len = 0;
// Call after closing the window to clean up the render buffer
void Clay_Raylib_Close()
{
if(temp_render_buffer) free(temp_render_buffer);
temp_render_buffer_len = 0;
CloseWindow();
}
void Clay_Raylib_Render(Clay_RenderCommandArray renderCommands, Font* fonts)
{
for (int j = 0; j < renderCommands.length; j++)
@ -134,14 +149,23 @@ void Clay_Raylib_Render(Clay_RenderCommandArray renderCommands, Font* fonts)
switch (renderCommand->commandType)
{
case CLAY_RENDER_COMMAND_TYPE_TEXT: {
// Raylib uses standard C strings so isn't compatible with cheap slices, we need to clone the string to append null terminator
Clay_TextRenderData *textData = &renderCommand->renderData.text;
char *cloned = (char *)malloc(textData->stringContents.length + 1);
memcpy(cloned, textData->stringContents.chars, textData->stringContents.length);
cloned[textData->stringContents.length] = '\0';
Font fontToUse = fonts[textData->fontId];
DrawTextEx(fontToUse, cloned, (Vector2){boundingBox.x, boundingBox.y}, (float)textData->fontSize, (float)textData->letterSpacing, CLAY_COLOR_TO_RAYLIB_COLOR(textData->textColor));
free(cloned);
int strlen = textData->stringContents.length + 1;
if(strlen > temp_render_buffer_len) {
// Grow the temp buffer if we need a larger string
if(temp_render_buffer) free(temp_render_buffer);
temp_render_buffer = malloc(strlen);
temp_render_buffer_len = strlen;
}
// Raylib uses standard C strings so isn't compatible with cheap slices, we need to clone the string to append null terminator
memcpy(temp_render_buffer, textData->stringContents.chars, textData->stringContents.length);
temp_render_buffer[textData->stringContents.length] = '\0';
DrawTextEx(fontToUse, temp_render_buffer, (Vector2){boundingBox.x, boundingBox.y}, (float)textData->fontSize, (float)textData->letterSpacing, CLAY_COLOR_TO_RAYLIB_COLOR(textData->textColor));
break;
}
case CLAY_RENDER_COMMAND_TYPE_IMAGE: {