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https://github.com/odin-lang/Odin.git
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69 lines
2.6 KiB
Odin
69 lines
2.6 KiB
Odin
package sdl2
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import "core:c"
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when ODIN_OS == .Windows {
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@(ignore_duplicates)
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foreign import lib "SDL2.lib"
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} else {
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@(ignore_duplicates)
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foreign import lib "system:SDL2"
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}
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/**
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* \brief The blend mode used in SDL_RenderCopy() and drawing operations.
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*/
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BlendMode :: enum c.int {
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NONE = 0x00000000, /**< no blending
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dstRGBA = srcRGBA */
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BLEND = 0x00000001, /**< alpha blending
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dstRGB = (srcRGB * srcA) + (dstRGB * (1-srcA))
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dstA = srcA + (dstA * (1-srcA)) */
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ADD = 0x00000002, /**< additive blending
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dstRGB = (srcRGB * srcA) + dstRGB
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dstA = dstA */
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MOD = 0x00000004, /**< color modulate
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dstRGB = srcRGB * dstRGB
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dstA = dstA */
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MUL = 0x00000008, /**< color multiply
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dstRGB = (srcRGB * dstRGB) + (dstRGB * (1-srcA))
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dstA = (srcA * dstA) + (dstA * (1-srcA)) */
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INVALID = 0x7FFFFFFF,
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/* Additional custom blend modes can be returned by ComposeCustomBlendMode() */
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}
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/**
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* \brief The blend operation used when combining source and destination pixel components
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*/
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BlendOperation :: enum c.int {
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ADD = 0x1, /**< dst + src: supported by all renderers */
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SUBTRACT = 0x2, /**< dst - src : supported by D3D9, D3D11, OpenGL, OpenGLES */
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REV_SUBTRACT = 0x3, /**< src - dst : supported by D3D9, D3D11, OpenGL, OpenGLES */
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MINIMUM = 0x4, /**< min(dst, src) : supported by D3D11 */
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MAXIMUM = 0x5, /**< max(dst, src) : supported by D3D11 */
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}
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/**
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* \brief The normalized factor used to multiply pixel components
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*/
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BlendFactor :: enum c.int {
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ZERO = 0x1, /**< 0, 0, 0, 0 */
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ONE = 0x2, /**< 1, 1, 1, 1 */
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SRC_COLOR = 0x3, /**< srcR, srcG, srcB, srcA */
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ONE_MINUS_SRC_COLOR = 0x4, /**< 1-srcR, 1-srcG, 1-srcB, 1-srcA */
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SRC_ALPHA = 0x5, /**< srcA, srcA, srcA, srcA */
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ONE_MINUS_SRC_ALPHA = 0x6, /**< 1-srcA, 1-srcA, 1-srcA, 1-srcA */
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DST_COLOR = 0x7, /**< dstR, dstG, dstB, dstA */
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ONE_MINUS_DST_COLOR = 0x8, /**< 1-dstR, 1-dstG, 1-dstB, 1-dstA */
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DST_ALPHA = 0x9, /**< dstA, dstA, dstA, dstA */
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ONE_MINUS_DST_ALPHA = 0xA, /**< 1-dstA, 1-dstA, 1-dstA, 1-dstA */
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}
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@(default_calling_convention="c", link_prefix="SDL_")
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foreign lib {
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ComposeCustomBlendMode :: proc(srcColorFactor, dstColorFactor: BlendFactor, colorOperation: BlendOperation,
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srcAlphaFactor, dstAlphaFactor: BlendFactor, alphaOperation: BlendOperation) -> BlendMode ---
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}
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