1 files changed, 128 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/test/testgpu_simple_clear.c b/contrib/SDL-3.2.8/test/testgpu_simple_clear.c
new file mode 100644
index 0000000..41016ee
--- /dev/null
+++ b/contrib/SDL-3.2.8/test/testgpu_simple_clear.c
@@ -0,0 +1,128 @@
+/*
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely.
+*/
+
+#define SDL_MAIN_USE_CALLBACKS 1
+#include <SDL3/SDL.h>
+#include <SDL3/SDL_main.h>
+#include <SDL3/SDL_test.h>
+
+/* we don't actually use any shaders in this one, so just give us lots of options for backends. */
+#define TESTGPU_SUPPORTED_FORMATS (SDL_GPU_SHADERFORMAT_SPIRV | SDL_GPU_SHADERFORMAT_DXBC | SDL_GPU_SHADERFORMAT_DXIL | SDL_GPU_SHADERFORMAT_METALLIB)
+
+static SDLTest_CommonState *state;
+static SDL_GPUDevice *gpu_device;
+static Uint64 then = 0;
+static Uint64 frames = 0;
+
+SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
+{
+    const SDL_DisplayMode *mode;
+    int dw, dh;
+
+    /* Initialize test framework */
+    state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
+    if (!state) {
+        return SDL_APP_FAILURE;
+    }
+
+    state->skip_renderer = 1;
+
+    if (!SDLTest_CommonDefaultArgs(state, argc, argv) || !SDLTest_CommonInit(state)) {
+        SDLTest_CommonQuit(state);
+        return SDL_APP_FAILURE;
+    }
+
+        gpu_device = SDL_CreateGPUDevice(TESTGPU_SUPPORTED_FORMATS, true, NULL);
+        if (!gpu_device) {
+                SDL_Log("SDL_CreateGPUDevice failed: %s", SDL_GetError());
+                return SDL_APP_FAILURE;
+        }
+
+        if (!SDL_ClaimWindowForGPUDevice(gpu_device, state->windows[0])) {
+                SDL_Log("SDL_ClaimWindowForGPUDevice failed: %s", SDL_GetError());
+                return SDL_APP_FAILURE;
+        }
+
+    mode = SDL_GetCurrentDisplayMode(SDL_GetPrimaryDisplay());
+    if (mode) {
+        SDL_Log("Screen BPP    : %d", SDL_BITSPERPIXEL(mode->format));
+    }
+    SDL_GetWindowSize(state->windows[0], &dw, &dh);
+    SDL_Log("Window Size   : %d,%d", dw, dh);
+    SDL_GetWindowSizeInPixels(state->windows[0], &dw, &dh);
+    SDL_Log("Draw Size     : %d,%d", dw, dh);
+    SDL_Log("%s", "");
+
+    then = SDL_GetTicks();
+
+    return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppEvent(void *appstate, SDL_Event *event)
+{
+    return SDLTest_CommonEventMainCallbacks(state, event);
+}
+
+SDL_AppResult SDL_AppIterate(void *appstate)
+{
+        SDL_GPUCommandBuffer *cmdbuf = SDL_AcquireGPUCommandBuffer(gpu_device);
+
+        if (cmdbuf == NULL) {
+                SDL_Log("SDL_AcquireGPUCommandBuffer failed: %s", SDL_GetError());
+        return SDL_APP_FAILURE;
+        }
+
+    SDL_GPUTexture *swapchainTexture;
+        if (!SDL_WaitAndAcquireGPUSwapchainTexture(cmdbuf, state->windows[0], &swapchainTexture, NULL, NULL)) {
+        SDL_Log("SDL_AcquireGPUSwapchainTexture failed: %s", SDL_GetError());
+        return SDL_APP_FAILURE;
+    }
+
+    if (swapchainTexture != NULL) {
+        const double currentTime = (double)SDL_GetPerformanceCounter() / SDL_GetPerformanceFrequency();
+        SDL_GPURenderPass *renderPass;
+        SDL_GPUColorTargetInfo color_target_info;
+        SDL_zero(color_target_info);
+        color_target_info.texture = swapchainTexture;
+        color_target_info.clear_color.r = (float)(0.5 + 0.5 * SDL_sin(currentTime));
+        color_target_info.clear_color.g = (float)(0.5 + 0.5 * SDL_sin(currentTime + SDL_PI_D * 2 / 3));
+        color_target_info.clear_color.b = (float)(0.5 + 0.5 * SDL_sin(currentTime + SDL_PI_D * 4 / 3));
+        color_target_info.clear_color.a = 1.0f;
+        color_target_info.load_op = SDL_GPU_LOADOP_CLEAR;
+        color_target_info.store_op = SDL_GPU_STOREOP_STORE;
+
+        renderPass = SDL_BeginGPURenderPass(cmdbuf, &color_target_info, 1, NULL);
+        SDL_EndGPURenderPass(renderPass);
+
+        SDL_SubmitGPUCommandBuffer(cmdbuf);
+    } else {
+        /* Swapchain is unavailable, cancel work */
+        SDL_CancelGPUCommandBuffer(cmdbuf);
+    }
+
+    frames++;
+
+    return SDL_APP_CONTINUE;
+}
+
+void SDL_AppQuit(void *appstate, SDL_AppResult result)
+{
+    /* Print out some timing information */
+    const Uint64 now = SDL_GetTicks();
+    if (now > then) {
+        SDL_Log("%2.2f frames per second", ((double)frames * 1000) / (now - then));
+    }
+
+        SDL_ReleaseWindowFromGPUDevice(gpu_device, state->windows[0]);
+        SDL_DestroyGPUDevice(gpu_device);
+    SDLTest_CommonQuit(state);
+}