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Implement SDL3 image rendering with SDL_image.

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Stephen T 2025-01-31 03:02:33 -06:00 committed by Nic Barker
parent eeb4520f48
commit 509b23a601
4 changed files with 26 additions and 0 deletions
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13
examples/SDL3-simple-demo/CMakeLists.txt
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@ -34,11 +34,24 @@ message(STATUS "Using SDL_ttf via FetchContent")
FetchContent_MakeAvailable(SDL_ttf)
set_property(DIRECTORY "${sdl_ttf_SOURCE_DIR}" PROPERTY EXCLUDE_FROM_ALL TRUE)
# Download SDL_image
FetchContent_Declare(
SDL_image
GIT_REPOSITORY "https://github.com/libsdl-org/SDL_image.git"
GIT_TAG main # Slightly risky to use main branch, but it's the only one available
GIT_SHALLOW TRUE
GIT_PROGRESS TRUE
)
message(STATUS "Using SDL_image via FetchContent")
FetchContent_MakeAvailable(SDL_image)
set_property(DIRECTORY "${SDL_image_SOURCE_DIR}" PROPERTY EXCLUDE_FROM_ALL TRUE)
# Example executable
add_executable(${PROJECT_NAME} main.c)
target_link_libraries(${PROJECT_NAME} PRIVATE
SDL3::SDL3
SDL3_ttf::SDL3_ttf
SDL3_image::SDL3_image
)
add_custom_command(

4
examples/SDL3-simple-demo/main.c
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@ -23,6 +23,8 @@ typedef struct app_state {
ClayVideoDemo_Data demoData;
} AppState;
SDL_Surface *sample_image;
static inline Clay_Dimensions SDL_MeasureText(Clay_StringSlice text, Clay_TextElementConfig *config, void *userData)
{
TTF_Font **fonts = userData;
@ -81,6 +83,8 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
state->rendererData.fonts[FONT_ID] = font;
sample_image = IMG_Load("resources/sample.png");
/* Initialize Clay */
uint64_t totalMemorySize = Clay_MinMemorySize();
Clay_Arena clayMemory = (Clay_Arena) {

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examples/SDL3-simple-demo/resources/sample.png Normal file
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9
renderers/SDL3/clay_renderer_SDL3.c
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@ -2,6 +2,7 @@
#include <SDL3/SDL_main.h>
#include <SDL3/SDL.h>
#include <SDL3_ttf/SDL_ttf.h>
#include <SDL3_image/SDL_image.h>
typedef struct {
SDL_Renderer *renderer;
@ -231,6 +232,14 @@ static void SDL_Clay_RenderClayCommands(Clay_SDL3RendererData *rendererData, Cla
}
} break;
case CLAY_RENDER_COMMAND_TYPE_IMAGE: {
const SDL_Surface *image = (SDL_Surface *)rcmd->config.imageElementConfig->imageData;
const SDL_Texture *texture = SDL_CreateTextureFromSurface(renderer, image);
const SDL_FRect dest = { rect.x, rect.y, rect.w, rect.h };
SDL_RenderTexture(renderer, texture, NULL, &dest);
break;
}
default:
SDL_Log("Unknown render command type: %d", rcmd->commandType);
}