1 files changed, 198 insertions, 0 deletions
diff --git a/src/contrib/SDL-2.30.2/include/SDL_blendmode.h b/src/contrib/SDL-2.30.2/include/SDL_blendmode.h
new file mode 100644
index 0000000..09d0147
--- /dev/null
+++ b/src/contrib/SDL-2.30.2/include/SDL_blendmode.h
@@ -0,0 +1,198 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 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.
+*/
+/**
+ *  \file SDL_blendmode.h
+ *
+ *  Header file declaring the SDL_BlendMode enumeration
+ */
+#ifndef SDL_blendmode_h_
+#define SDL_blendmode_h_
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+/**
+ *  \brief The blend mode used in SDL_RenderCopy() and drawing operations.
+ */
+typedef enum
+{
+    SDL_BLENDMODE_NONE = 0x00000000,     /**< no blending
+                                              dstRGBA = srcRGBA */
+    SDL_BLENDMODE_BLEND = 0x00000001,    /**< alpha blending
+                                              dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))
+                                              dstA = srcA + (dstA * (1-srcA)) */
+    SDL_BLENDMODE_ADD = 0x00000002,      /**< additive blending
+                                              dstRGB = (srcRGB * srcA) + dstRGB
+                                              dstA = dstA */
+    SDL_BLENDMODE_MOD = 0x00000004,      /**< color modulate
+                                              dstRGB = srcRGB * dstRGB
+                                              dstA = dstA */
+    SDL_BLENDMODE_MUL = 0x00000008,      /**< color multiply
+                                              dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
+                                              dstA = dstA */
+    SDL_BLENDMODE_INVALID = 0x7FFFFFFF
+    /* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */
+} SDL_BlendMode;
+/**
+ *  \brief The blend operation used when combining source and destination pixel components
+ */
+typedef enum
+{
+    SDL_BLENDOPERATION_ADD              = 0x1,  /**< dst + src: supported by all renderers */
+    SDL_BLENDOPERATION_SUBTRACT         = 0x2,  /**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES */
+    SDL_BLENDOPERATION_REV_SUBTRACT     = 0x3,  /**< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES */
+    SDL_BLENDOPERATION_MINIMUM          = 0x4,  /**< min(dst, src) : supported by D3D9, D3D11 */
+    SDL_BLENDOPERATION_MAXIMUM          = 0x5   /**< max(dst, src) : supported by D3D9, D3D11 */
+} SDL_BlendOperation;
+/**
+ *  \brief The normalized factor used to multiply pixel components
+ */
+typedef enum
+{
+    SDL_BLENDFACTOR_ZERO                = 0x1,  /**< 0, 0, 0, 0 */
+    SDL_BLENDFACTOR_ONE                 = 0x2,  /**< 1, 1, 1, 1 */
+    SDL_BLENDFACTOR_SRC_COLOR           = 0x3,  /**< srcR, srcG, srcB, srcA */
+    SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4,  /**< 1-srcR, 1-srcG, 1-srcB, 1-srcA */
+    SDL_BLENDFACTOR_SRC_ALPHA           = 0x5,  /**< srcA, srcA, srcA, srcA */
+    SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6,  /**< 1-srcA, 1-srcA, 1-srcA, 1-srcA */
+    SDL_BLENDFACTOR_DST_COLOR           = 0x7,  /**< dstR, dstG, dstB, dstA */
+    SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8,  /**< 1-dstR, 1-dstG, 1-dstB, 1-dstA */
+    SDL_BLENDFACTOR_DST_ALPHA           = 0x9,  /**< dstA, dstA, dstA, dstA */
+    SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA   /**< 1-dstA, 1-dstA, 1-dstA, 1-dstA */
+} SDL_BlendFactor;
+/**
+ * Compose a custom blend mode for renderers.
+ *
+ * The functions SDL_SetRenderDrawBlendMode and SDL_SetTextureBlendMode accept
+ * the SDL_BlendMode returned by this function if the renderer supports it.
+ *
+ * A blend mode controls how the pixels from a drawing operation (source) get
+ * combined with the pixels from the render target (destination). First, the
+ * components of the source and destination pixels get multiplied with their
+ * blend factors. Then, the blend operation takes the two products and
+ * calculates the result that will get stored in the render target.
+ *
+ * Expressed in pseudocode, it would look like this:
+ *
+ * ```c
+ * dstRGB = colorOperation(srcRGB * srcColorFactor, dstRGB * dstColorFactor);
+ * dstA = alphaOperation(srcA * srcAlphaFactor, dstA * dstAlphaFactor);
+ * ```
+ *
+ * Where the functions `colorOperation(src, dst)` and `alphaOperation(src,
+ * dst)` can return one of the following:
+ *
+ * - `src + dst`
+ * - `src - dst`
+ * - `dst - src`
+ * - `min(src, dst)`
+ * - `max(src, dst)`
+ *
+ * The red, green, and blue components are always multiplied with the first,
+ * second, and third components of the SDL_BlendFactor, respectively. The
+ * fourth component is not used.
+ *
+ * The alpha component is always multiplied with the fourth component of the
+ * SDL_BlendFactor. The other components are not used in the alpha
+ * calculation.
+ *
+ * Support for these blend modes varies for each renderer. To check if a
+ * specific SDL_BlendMode is supported, create a renderer and pass it to
+ * either SDL_SetRenderDrawBlendMode or SDL_SetTextureBlendMode. They will
+ * return with an error if the blend mode is not supported.
+ *
+ * This list describes the support of custom blend modes for each renderer in
+ * SDL 2.0.6. All renderers support the four blend modes listed in the
+ * SDL_BlendMode enumeration.
+ *
+ * - **direct3d**: Supports all operations with all factors. However, some
+ *   factors produce unexpected results with `SDL_BLENDOPERATION_MINIMUM` and
+ *   `SDL_BLENDOPERATION_MAXIMUM`.
+ * - **direct3d11**: Same as Direct3D 9.
+ * - **opengl**: Supports the `SDL_BLENDOPERATION_ADD` operation with all
+ *   factors. OpenGL versions 1.1, 1.2, and 1.3 do not work correctly with SDL
+ *   2.0.6.
+ * - **opengles**: Supports the `SDL_BLENDOPERATION_ADD` operation with all
+ *   factors. Color and alpha factors need to be the same. OpenGL ES 1
+ *   implementation specific: May also support `SDL_BLENDOPERATION_SUBTRACT`
+ *   and `SDL_BLENDOPERATION_REV_SUBTRACT`. May support color and alpha
+ *   operations being different from each other. May support color and alpha
+ *   factors being different from each other.
+ * - **opengles2**: Supports the `SDL_BLENDOPERATION_ADD`,
+ *   `SDL_BLENDOPERATION_SUBTRACT`, `SDL_BLENDOPERATION_REV_SUBTRACT`
+ *   operations with all factors.
+ * - **psp**: No custom blend mode support.
+ * - **software**: No custom blend mode support.
+ *
+ * Some renderers do not provide an alpha component for the default render
+ * target. The `SDL_BLENDFACTOR_DST_ALPHA` and
+ * `SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA` factors do not have an effect in this
+ * case.
+ *
+ * \param srcColorFactor the SDL_BlendFactor applied to the red, green, and
+ *                       blue components of the source pixels
+ * \param dstColorFactor the SDL_BlendFactor applied to the red, green, and
+ *                       blue components of the destination pixels
+ * \param colorOperation the SDL_BlendOperation used to combine the red,
+ *                       green, and blue components of the source and
+ *                       destination pixels
+ * \param srcAlphaFactor the SDL_BlendFactor applied to the alpha component of
+ *                       the source pixels
+ * \param dstAlphaFactor the SDL_BlendFactor applied to the alpha component of
+ *                       the destination pixels
+ * \param alphaOperation the SDL_BlendOperation used to combine the alpha
+ *                       component of the source and destination pixels
+ * \returns an SDL_BlendMode that represents the chosen factors and
+ *          operations.
+ *
+ * \since This function is available since SDL 2.0.6.
+ *
+ * \sa SDL_SetRenderDrawBlendMode
+ * \sa SDL_GetRenderDrawBlendMode
+ * \sa SDL_SetTextureBlendMode
+ * \sa SDL_GetTextureBlendMode
+ */
+extern DECLSPEC SDL_BlendMode SDLCALL SDL_ComposeCustomBlendMode(SDL_BlendFactor srcColorFactor,
+                                                                 SDL_BlendFactor dstColorFactor,
+                                                                 SDL_BlendOperation colorOperation,
+                                                                 SDL_BlendFactor srcAlphaFactor,
+                                                                 SDL_BlendFactor dstAlphaFactor,
+                                                                 SDL_BlendOperation alphaOperation);
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+#endif /* SDL_blendmode_h_ */
+/* vi: set ts=4 sw=4 expandtab: */

diff --git a/src/contrib/SDL-2.30.2/include/SDL_blendmode.h b/src/contrib/SDL-2.30.2/include/SDL_blendmode.h new file mode 100644 index 0000000..09d0147 --- /dev/null +++ b/src/contrib/SDL-2.30.2/include/SDL_blendmode.h
@@ -0,0 +1,198 @@
	1	/*
	2	Simple DirectMedia Layer
	3	Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
	4
	5	This software is provided 'as-is', without any express or implied
	6	warranty. In no event will the authors be held liable for any damages
	7	arising from the use of this software.
	8
	9	Permission is granted to anyone to use this software for any purpose,
	10	including commercial applications, and to alter it and redistribute it
	11	freely, subject to the following restrictions:
	12
	13	1. The origin of this software must not be misrepresented; you must not
	14	claim that you wrote the original software. If you use this software
	15	in a product, an acknowledgment in the product documentation would be
	16	appreciated but is not required.
	17	2. Altered source versions must be plainly marked as such, and must not be
	18	misrepresented as being the original software.
	19	3. This notice may not be removed or altered from any source distribution.
	20	*/
	21
	22	/**
	23	* \file SDL_blendmode.h
	24	*
	25	* Header file declaring the SDL_BlendMode enumeration
	26	*/
	27
	28	#ifndef SDL_blendmode_h_
	29	#define SDL_blendmode_h_
	30
	31	#include "begin_code.h"
	32	/* Set up for C function definitions, even when using C++ */
	33	#ifdef __cplusplus
	34	extern "C" {
	35	#endif
	36
	37	/**
	38	* \brief The blend mode used in SDL_RenderCopy() and drawing operations.
	39	*/
	40	typedef enum
	41	{
	42	SDL_BLENDMODE_NONE = 0x00000000, /**< no blending
	43	dstRGBA = srcRGBA */
	44	SDL_BLENDMODE_BLEND = 0x00000001, /**< alpha blending
	45	dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))
	46	dstA = srcA + (dstA * (1-srcA)) */
	47	SDL_BLENDMODE_ADD = 0x00000002, /**< additive blending
	48	dstRGB = (srcRGB * srcA) + dstRGB
	49	dstA = dstA */
	50	SDL_BLENDMODE_MOD = 0x00000004, /**< color modulate
	51	dstRGB = srcRGB * dstRGB
	52	dstA = dstA */
	53	SDL_BLENDMODE_MUL = 0x00000008, /**< color multiply
	54	dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
	55	dstA = dstA */
	56	SDL_BLENDMODE_INVALID = 0x7FFFFFFF
	57
	58	/* Additional custom blend modes can be returned by SDL_ComposeCustomBlendMode() */
	59
	60	} SDL_BlendMode;
	61
	62	/**
	63	* \brief The blend operation used when combining source and destination pixel components
	64	*/
	65	typedef enum
	66	{
	67	SDL_BLENDOPERATION_ADD = 0x1, /*< dst + src: supported by all renderers /
	68	SDL_BLENDOPERATION_SUBTRACT = 0x2, /*< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES /
	69	SDL_BLENDOPERATION_REV_SUBTRACT = 0x3, /*< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES /
	70	SDL_BLENDOPERATION_MINIMUM = 0x4, /*< min(dst, src) : supported by D3D9, D3D11 /
	71	SDL_BLENDOPERATION_MAXIMUM = 0x5 /*< max(dst, src) : supported by D3D9, D3D11 /
	72	} SDL_BlendOperation;
	73
	74	/**
	75	* \brief The normalized factor used to multiply pixel components
	76	*/
	77	typedef enum
	78	{
	79	SDL_BLENDFACTOR_ZERO = 0x1, /*< 0, 0, 0, 0 /
	80	SDL_BLENDFACTOR_ONE = 0x2, /*< 1, 1, 1, 1 /
	81	SDL_BLENDFACTOR_SRC_COLOR = 0x3, /*< srcR, srcG, srcB, srcA /
	82	SDL_BLENDFACTOR_ONE_MINUS_SRC_COLOR = 0x4, /*< 1-srcR, 1-srcG, 1-srcB, 1-srcA /
	83	SDL_BLENDFACTOR_SRC_ALPHA = 0x5, /*< srcA, srcA, srcA, srcA /
	84	SDL_BLENDFACTOR_ONE_MINUS_SRC_ALPHA = 0x6, /*< 1-srcA, 1-srcA, 1-srcA, 1-srcA /
	85	SDL_BLENDFACTOR_DST_COLOR = 0x7, /*< dstR, dstG, dstB, dstA /
	86	SDL_BLENDFACTOR_ONE_MINUS_DST_COLOR = 0x8, /*< 1-dstR, 1-dstG, 1-dstB, 1-dstA /
	87	SDL_BLENDFACTOR_DST_ALPHA = 0x9, /*< dstA, dstA, dstA, dstA /
	88	SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA = 0xA /*< 1-dstA, 1-dstA, 1-dstA, 1-dstA /
	89	} SDL_BlendFactor;
	90
	91	/**
	92	* Compose a custom blend mode for renderers.
	93	*
	94	* The functions SDL_SetRenderDrawBlendMode and SDL_SetTextureBlendMode accept
	95	* the SDL_BlendMode returned by this function if the renderer supports it.
	96	*
	97	* A blend mode controls how the pixels from a drawing operation (source) get
	98	* combined with the pixels from the render target (destination). First, the
	99	* components of the source and destination pixels get multiplied with their
	100	* blend factors. Then, the blend operation takes the two products and
	101	* calculates the result that will get stored in the render target.
	102	*
	103	* Expressed in pseudocode, it would look like this:
	104	*
	105	* ```c
	106	* dstRGB = colorOperation(srcRGB * srcColorFactor, dstRGB * dstColorFactor);
	107	* dstA = alphaOperation(srcA * srcAlphaFactor, dstA * dstAlphaFactor);
	108	* ```
	109	*
	110	* Where the functions `colorOperation(src, dst)` and `alphaOperation(src,
	111	* dst)` can return one of the following:
	112	*
	113	* - `src + dst`
	114	* - `src - dst`
	115	* - `dst - src`
	116	* - `min(src, dst)`
	117	* - `max(src, dst)`
	118	*
	119	* The red, green, and blue components are always multiplied with the first,
	120	* second, and third components of the SDL_BlendFactor, respectively. The
	121	* fourth component is not used.
	122	*
	123	* The alpha component is always multiplied with the fourth component of the
	124	* SDL_BlendFactor. The other components are not used in the alpha
	125	* calculation.
	126	*
	127	* Support for these blend modes varies for each renderer. To check if a
	128	* specific SDL_BlendMode is supported, create a renderer and pass it to
	129	* either SDL_SetRenderDrawBlendMode or SDL_SetTextureBlendMode. They will
	130	* return with an error if the blend mode is not supported.
	131	*
	132	* This list describes the support of custom blend modes for each renderer in
	133	* SDL 2.0.6. All renderers support the four blend modes listed in the
	134	* SDL_BlendMode enumeration.
	135	*
	136	* - direct3d: Supports all operations with all factors. However, some
	137	* factors produce unexpected results with `SDL_BLENDOPERATION_MINIMUM` and
	138	* `SDL_BLENDOPERATION_MAXIMUM`.
	139	* - direct3d11: Same as Direct3D 9.
	140	* - opengl: Supports the `SDL_BLENDOPERATION_ADD` operation with all
	141	* factors. OpenGL versions 1.1, 1.2, and 1.3 do not work correctly with SDL
	142	* 2.0.6.
	143	* - opengles: Supports the `SDL_BLENDOPERATION_ADD` operation with all
	144	* factors. Color and alpha factors need to be the same. OpenGL ES 1
	145	* implementation specific: May also support `SDL_BLENDOPERATION_SUBTRACT`
	146	* and `SDL_BLENDOPERATION_REV_SUBTRACT`. May support color and alpha
	147	* operations being different from each other. May support color and alpha
	148	* factors being different from each other.
	149	* - opengles2: Supports the `SDL_BLENDOPERATION_ADD`,
	150	* `SDL_BLENDOPERATION_SUBTRACT`, `SDL_BLENDOPERATION_REV_SUBTRACT`
	151	* operations with all factors.
	152	* - psp: No custom blend mode support.
	153	* - software: No custom blend mode support.
	154	*
	155	* Some renderers do not provide an alpha component for the default render
	156	* target. The `SDL_BLENDFACTOR_DST_ALPHA` and
	157	* `SDL_BLENDFACTOR_ONE_MINUS_DST_ALPHA` factors do not have an effect in this
	158	* case.
	159	*
	160	* \param srcColorFactor the SDL_BlendFactor applied to the red, green, and
	161	* blue components of the source pixels
	162	* \param dstColorFactor the SDL_BlendFactor applied to the red, green, and
	163	* blue components of the destination pixels
	164	* \param colorOperation the SDL_BlendOperation used to combine the red,
	165	* green, and blue components of the source and
	166	* destination pixels
	167	* \param srcAlphaFactor the SDL_BlendFactor applied to the alpha component of
	168	* the source pixels
	169	* \param dstAlphaFactor the SDL_BlendFactor applied to the alpha component of
	170	* the destination pixels
	171	* \param alphaOperation the SDL_BlendOperation used to combine the alpha
	172	* component of the source and destination pixels
	173	* \returns an SDL_BlendMode that represents the chosen factors and
	174	* operations.
	175	*
	176	* \since This function is available since SDL 2.0.6.
	177	*
	178	* \sa SDL_SetRenderDrawBlendMode
	179	* \sa SDL_GetRenderDrawBlendMode
	180	* \sa SDL_SetTextureBlendMode
	181	* \sa SDL_GetTextureBlendMode
	182	*/
	183	extern DECLSPEC SDL_BlendMode SDLCALL SDL_ComposeCustomBlendMode(SDL_BlendFactor srcColorFactor,
	184	SDL_BlendFactor dstColorFactor,
	185	SDL_BlendOperation colorOperation,
	186	SDL_BlendFactor srcAlphaFactor,
	187	SDL_BlendFactor dstAlphaFactor,
	188	SDL_BlendOperation alphaOperation);
	189
	190	/* Ends C function definitions when using C++ */
	191	#ifdef __cplusplus
	192	}
	193	#endif
	194	#include "close_code.h"
	195
	196	#endif /* SDL_blendmode_h_ */
	197
	198	/* vi: set ts=4 sw=4 expandtab: */