From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 27 Dec 2025 12:03:39 -0800
Subject: Initial commit

---
 .../src/render/direct3d11/SDL_shaders_d3d11.c      | 116 +++++++++++++++++++++
 1 file changed, 116 insertions(+)
 create mode 100644 contrib/SDL-3.2.8/src/render/direct3d11/SDL_shaders_d3d11.c

(limited to 'contrib/SDL-3.2.8/src/render/direct3d11/SDL_shaders_d3d11.c')

diff --git a/contrib/SDL-3.2.8/src/render/direct3d11/SDL_shaders_d3d11.c b/contrib/SDL-3.2.8/src/render/direct3d11/SDL_shaders_d3d11.c
new file mode 100644
index 0000000..18965e2
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/render/direct3d11/SDL_shaders_d3d11.c
@@ -0,0 +1,116 @@
+/*
+  Simple DirectMedia Layer
+  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, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_RENDER_D3D11
+
+#define COBJMACROS
+#include "../../core/windows/SDL_windows.h"
+#include <d3d11_1.h>
+
+#include "SDL_shaders_d3d11.h"
+
+#define SDL_COMPOSE_ERROR(str) SDL_STRINGIFY_ARG(__FUNCTION__) ", " str
+
+#if SDL_WINAPI_FAMILY_PHONE
+#error Need to build shaders with level_9_3
+#endif
+
+// The shaders here were compiled with compile_shaders.bat
+
+#define g_main D3D11_PixelShader_Colors
+#include "D3D11_PixelShader_Colors.h"
+#undef g_main
+
+#define g_main D3D11_PixelShader_Textures
+#include "D3D11_PixelShader_Textures.h"
+#undef g_main
+
+#define g_main D3D11_PixelShader_Advanced
+#include "D3D11_PixelShader_Advanced.h"
+#undef g_main
+
+#define g_main D3D11_VertexShader
+#include "D3D11_VertexShader.h"
+#undef g_main
+
+
+static struct
+{
+    const void *shader_data;
+    SIZE_T shader_size;
+} D3D11_shaders[] = {
+    { NULL, 0 },
+    { D3D11_PixelShader_Colors, sizeof(D3D11_PixelShader_Colors) },
+    { D3D11_PixelShader_Textures, sizeof(D3D11_PixelShader_Textures) },
+    { D3D11_PixelShader_Advanced, sizeof(D3D11_PixelShader_Advanced) },
+};
+SDL_COMPILE_TIME_ASSERT(D3D11_shaders, SDL_arraysize(D3D11_shaders) == NUM_SHADERS);
+
+bool D3D11_CreateVertexShader(ID3D11Device1 *d3dDevice, ID3D11VertexShader **vertexShader, ID3D11InputLayout **inputLayout)
+{
+    // Declare how the input layout for SDL's vertex shader will be setup:
+    const D3D11_INPUT_ELEMENT_DESC vertexDesc[] = {
+        { "POSITION", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 0, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+        { "TEXCOORD", 0, DXGI_FORMAT_R32G32_FLOAT, 0, 8, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+        { "COLOR", 0, DXGI_FORMAT_R32G32B32A32_FLOAT, 0, 16, D3D11_INPUT_PER_VERTEX_DATA, 0 },
+    };
+    HRESULT result;
+
+    // Load in SDL's one and only vertex shader:
+    result = ID3D11Device_CreateVertexShader(d3dDevice,
+                                             D3D11_VertexShader,
+                                             sizeof(D3D11_VertexShader),
+                                             NULL,
+                                             vertexShader);
+    if (FAILED(result)) {
+        return WIN_SetErrorFromHRESULT(SDL_COMPOSE_ERROR("ID3D11Device1::CreateVertexShader"), result);
+    }
+
+    // Create an input layout for SDL's vertex shader:
+    result = ID3D11Device_CreateInputLayout(d3dDevice,
+                                            vertexDesc,
+                                            ARRAYSIZE(vertexDesc),
+                                            D3D11_VertexShader,
+                                            sizeof(D3D11_VertexShader),
+                                            inputLayout);
+    if (FAILED(result)) {
+        return WIN_SetErrorFromHRESULT(SDL_COMPOSE_ERROR("ID3D11Device1::CreateInputLayout"), result);
+    }
+    return true;
+}
+
+bool D3D11_CreatePixelShader(ID3D11Device1 *d3dDevice, D3D11_Shader shader, ID3D11PixelShader **pixelShader)
+{
+    HRESULT result;
+
+    result = ID3D11Device_CreatePixelShader(d3dDevice,
+                                            D3D11_shaders[shader].shader_data,
+                                            D3D11_shaders[shader].shader_size,
+                                            NULL,
+                                            pixelShader);
+    if (FAILED(result)) {
+        return WIN_SetErrorFromHRESULT(SDL_COMPOSE_ERROR("ID3D11Device1::CreatePixelShader"), result);
+    }
+    return true;
+}
+
+#endif // SDL_VIDEO_RENDER_D3D11
-- 
cgit v1.2.3