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RGBA64U support #911

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0b1c69e
RGBA64U support
RblSb May 4, 2026
5664411
render targets
RblSb May 18, 2026
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3 changes: 3 additions & 0 deletions Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/rendertarget.c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,8 @@ static DXGI_FORMAT convertRenderTargetFormat(kinc_g4_render_target_format_t form
return DXGI_FORMAT_R32G32B32A32_FLOAT;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return DXGI_FORMAT_R16G16B16A16_UINT;
case KINC_G4_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return DXGI_FORMAT_R32_FLOAT;
case KINC_G4_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand All @@ -25,6 +27,7 @@ static int formatRenderTargetByteSize(kinc_g4_render_target_format_t format) {
case KINC_G4_RENDER_TARGET_FORMAT_128BIT_FLOAT:
return 16;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_FLOAT:
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return 8;
case KINC_G4_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return 4;
Expand Down
3 changes: 3 additions & 0 deletions Backends/Graphics4/Direct3D11/Sources/kinc/backend/graphics4/texture.c.h
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Expand Up @@ -11,6 +11,8 @@ static DXGI_FORMAT convertFormat(kinc_image_format_t format) {
return DXGI_FORMAT_R32G32B32A32_FLOAT;
case KINC_IMAGE_FORMAT_RGBA64:
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case KINC_IMAGE_FORMAT_RGBA64U:
return DXGI_FORMAT_R16G16B16A16_UINT;
case KINC_IMAGE_FORMAT_RGB24:
return DXGI_FORMAT_R8G8B8A8_UNORM;
case KINC_IMAGE_FORMAT_A32:
Expand All @@ -34,6 +36,7 @@ static int formatByteSize(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_RGBA128:
return 16;
case KINC_IMAGE_FORMAT_RGBA64:
case KINC_IMAGE_FORMAT_RGBA64U:
return 8;
case KINC_IMAGE_FORMAT_RGB24:
return 4;
Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics4/OpenGL/Sources/kinc/backend/graphics4/compute.c.h
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Expand Up @@ -41,6 +41,8 @@ static int convertInternalRTFormat(kinc_g4_render_target_format_t format) {
switch (format) {
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return GL_RGBA16F;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return GL_RGBA16UI;
case KINC_G4_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return GL_R32F;
case KINC_G4_RENDER_TARGET_FORMAT_128BIT_FLOAT:
Expand Down
29 changes: 29 additions & 0 deletions Backends/Graphics4/OpenGL/Sources/kinc/backend/graphics4/rendertarget.c.h
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Expand Up @@ -28,6 +28,18 @@
#define GL_HALF_FLOAT 0x140B
#endif

#ifndef GL_RGBA_INTEGER
#define GL_RGBA_INTEGER 0x8D99
#endif

#ifndef GL_RGBA16UI
#define GL_RGBA16UI 0x8D76
#endif

#ifndef GL_UNSIGNED_SHORT
#define GL_UNSIGNED_SHORT 0x1403
#endif

#ifndef GL_RED
#define GL_RED GL_LUMINANCE
#endif
Expand Down Expand Up @@ -201,6 +213,12 @@ void kinc_g4_render_target_init_with_multisampling(kinc_g4_render_target_t *rend
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F, renderTarget->texWidth, renderTarget->texHeight, 0, GL_RGBA, GL_HALF_FLOAT, 0);
#endif
break;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
// Integer formats require GL_NEAREST
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16UI, renderTarget->texWidth, renderTarget->texHeight, 0, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, 0);
break;
case KINC_G4_RENDER_TARGET_FORMAT_16BIT_DEPTH:
#ifdef KINC_OPENGL_ES
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
Expand Down Expand Up @@ -307,6 +325,14 @@ void kinc_g4_render_target_init_cube_with_multisampling(kinc_g4_render_target_t
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGBA16F, renderTarget->texWidth, renderTarget->texHeight, 0, GL_RGBA, GL_HALF_FLOAT, 0);
#endif
break;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
// Integer formats require GL_NEAREST
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
for (int i = 0; i < 6; i++)
glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGBA16UI, renderTarget->texWidth, renderTarget->texHeight, 0, GL_RGBA_INTEGER,
GL_UNSIGNED_SHORT, 0);
break;
case KINC_G4_RENDER_TARGET_FORMAT_16BIT_DEPTH:
#ifdef KINC_OPENGL_ES
glTexParameteri(GL_TEXTURE_CUBE_MAP, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
Expand Down Expand Up @@ -389,6 +415,9 @@ void kinc_g4_render_target_get_pixels(kinc_g4_render_target_t *renderTarget, uin
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_FLOAT:
glReadPixels(0, 0, renderTarget->texWidth, renderTarget->texHeight, GL_RGBA, GL_HALF_FLOAT, data);
break;
case KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER:
glReadPixels(0, 0, renderTarget->texWidth, renderTarget->texHeight, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT, data);
break;
case KINC_G4_RENDER_TARGET_FORMAT_8BIT_RED:
glReadPixels(0, 0, renderTarget->texWidth, renderTarget->texHeight, GL_RED, GL_UNSIGNED_BYTE, data);
break;
Expand Down
29 changes: 27 additions & 2 deletions Backends/Graphics4/OpenGL/Sources/kinc/backend/graphics4/texture.c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,18 @@
#define GL_HALF_FLOAT 0x140B
#endif

#ifndef GL_RGBA_INTEGER
#define GL_RGBA_INTEGER 0x8D99
#endif

#ifndef GL_RGBA16UI
#define GL_RGBA16UI 0x8D76
#endif

#ifndef GL_UNSIGNED_SHORT
#define GL_UNSIGNED_SHORT 0x1403
#endif

#ifndef GL_RED
#define GL_RED GL_LUMINANCE
#endif
Expand Down Expand Up @@ -93,6 +105,8 @@ static int convertFormat(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_RGBA128:
default:
return GL_RGBA;
case KINC_IMAGE_FORMAT_RGBA64U:
return GL_RGBA_INTEGER;
case KINC_IMAGE_FORMAT_RGB24:
return GL_RGB;
case KINC_IMAGE_FORMAT_A32:
Expand All @@ -108,6 +122,8 @@ static int convertInternalFormat(kinc_image_format_t format) {
return GL_RGBA32F_EXT;
case KINC_IMAGE_FORMAT_RGBA64:
return GL_RGBA16F_EXT;
case KINC_IMAGE_FORMAT_RGBA64U:
return GL_RGBA16UI;
case KINC_IMAGE_FORMAT_RGBA32:
return GL_RGBA8;
default:
Expand Down Expand Up @@ -142,6 +158,8 @@ static int convertType(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_A32:
case KINC_IMAGE_FORMAT_A16:
return GL_FLOAT;
case KINC_IMAGE_FORMAT_RGBA64U:
return GL_UNSIGNED_SHORT;
case KINC_IMAGE_FORMAT_RGBA32:
default:
return GL_UNSIGNED_BYTE;
Expand Down Expand Up @@ -246,6 +264,7 @@ static void convertImageToPow2(kinc_image_format_t format, uint8_t *from, int fw
case KINC_IMAGE_FORMAT_RGB24:
case KINC_IMAGE_FORMAT_RGBA128:
case KINC_IMAGE_FORMAT_RGBA64:
case KINC_IMAGE_FORMAT_RGBA64U:
case KINC_IMAGE_FORMAT_A32:
case KINC_IMAGE_FORMAT_A16:
case KINC_IMAGE_FORMAT_BGRA32:
Expand Down Expand Up @@ -451,14 +470,20 @@ void kinc_g4_texture_init(kinc_g4_texture_t *texture, int width, int height, kin
glCheckErrors();
glBindTexture(GL_TEXTURE_2D, texture->impl.texture);
glCheckErrors();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
// Integer formats require GL_NEAREST
int texFilter = format == KINC_IMAGE_FORMAT_RGBA64U ? GL_NEAREST : GL_LINEAR;
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, texFilter);
glCheckErrors();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, texFilter);
glCheckErrors();

if (convertType(format) == GL_FLOAT) {
glTexImage2D(GL_TEXTURE_2D, 0, convertInternalFormat(format), texture->tex_width, texture->tex_height, 0, convertFormat(format), GL_FLOAT, NULL);
}
else if (format == KINC_IMAGE_FORMAT_RGBA64U) {
glTexImage2D(GL_TEXTURE_2D, 0, convertInternalFormat(format), texture->tex_width, texture->tex_height, 0, convertFormat(format), GL_UNSIGNED_SHORT,
NULL);
}
else {
glTexImage2D(GL_TEXTURE_2D, 0, convertInternalFormat(format), texture->tex_width, texture->tex_height, 0, convertFormat(format), GL_UNSIGNED_BYTE,
NULL);
Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/pipeline.c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -285,6 +285,8 @@ static DXGI_FORMAT convert_format(kinc_g5_render_target_format_t format) {
return DXGI_FORMAT_R32G32B32A32_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return DXGI_FORMAT_R16G16B16A16_UINT;
case KINC_G5_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return DXGI_FORMAT_R32_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/rendertarget.c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,8 @@ static DXGI_FORMAT convertFormat(kinc_g5_render_target_format_t format) {
return DXGI_FORMAT_R32G32B32A32_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return DXGI_FORMAT_R16G16B16A16_UINT;
case KINC_G5_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return DXGI_FORMAT_R32_FLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand Down
3 changes: 3 additions & 0 deletions Backends/Graphics5/Direct3D12/Sources/kinc/backend/graphics5/texture.c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -39,6 +39,8 @@ static DXGI_FORMAT convertImageFormat(kinc_image_format_t format) {
return DXGI_FORMAT_R32G32B32A32_FLOAT;
case KINC_IMAGE_FORMAT_RGBA64:
return DXGI_FORMAT_R16G16B16A16_FLOAT;
case KINC_IMAGE_FORMAT_RGBA64U:
return DXGI_FORMAT_R16G16B16A16_UINT;
case KINC_IMAGE_FORMAT_RGB24:
return DXGI_FORMAT_R8G8B8A8_UNORM;
case KINC_IMAGE_FORMAT_A32:
Expand All @@ -61,6 +63,7 @@ static int formatByteSize(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_RGBA128:
return 16;
case KINC_IMAGE_FORMAT_RGBA64:
case KINC_IMAGE_FORMAT_RGBA64U:
return 8;
case KINC_IMAGE_FORMAT_RGB24:
return 4;
Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics5/Metal/Sources/kinc/backend/graphics5/pipeline.m.h
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Expand Up @@ -93,6 +93,8 @@ static MTLPixelFormat convert_render_target_format(kinc_g5_render_target_format_
return MTLPixelFormatRGBA32Float;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return MTLPixelFormatRGBA16Float;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return MTLPixelFormatRGBA16Uint;
case KINC_G5_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return MTLPixelFormatR32Float;
case KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics5/Metal/Sources/kinc/backend/graphics5/rendertarget.m.h
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Expand Up @@ -14,6 +14,8 @@ static MTLPixelFormat convert_format(kinc_g5_render_target_format_t format) {
return MTLPixelFormatRGBA32Float;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return MTLPixelFormatRGBA16Float;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return MTLPixelFormatRGBA16Uint;
case KINC_G5_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return MTLPixelFormatR32Float;
case KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand Down
10 changes: 8 additions & 2 deletions Backends/Graphics5/Metal/Sources/kinc/backend/graphics5/texture.m.h
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Expand Up @@ -27,6 +27,8 @@ static MTLPixelFormat convert_image_format(kinc_image_format_t format) {
return MTLPixelFormatBGRA8Unorm;
case KINC_IMAGE_FORMAT_A16:
return MTLPixelFormatR16Float;
case KINC_IMAGE_FORMAT_RGBA64U:
return MTLPixelFormatRGBA16Uint;
}
}

Expand All @@ -47,6 +49,8 @@ static int formatByteSize(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_BGRA32:
case KINC_IMAGE_FORMAT_RGBA32:
return 4;
case KINC_IMAGE_FORMAT_RGBA64U:
return 8;
default:
assert(false);
return 4;
Expand Down Expand Up @@ -90,7 +94,7 @@ void kinc_g5_texture_init(kinc_g5_texture_t *texture, int width, int height, kin
texture->texWidth = width;
texture->texHeight = height;
texture->format = format;
texture->impl.data = malloc(width * height * (format == KINC_IMAGE_FORMAT_GREY8 ? 1 : 4));
texture->impl.data = malloc(width * height * formatByteSize(format));
create(texture, width, height, format, true);
}

Expand All @@ -115,7 +119,7 @@ void kinc_g5_texture_init_non_sampled_access(kinc_g5_texture_t *texture, int wid
texture->texWidth = width;
texture->texHeight = height;
texture->format = format;
texture->impl.data = malloc(width * height * (format == KINC_IMAGE_FORMAT_GREY8 ? 1 : 4));
texture->impl.data = malloc(width * height * formatByteSize(format));
create(texture, width, height, format, true);
}

Expand Down Expand Up @@ -202,6 +206,8 @@ int kinc_g5_texture_stride(kinc_g5_texture_t *texture) {
return texture->texWidth * 2;
case KINC_IMAGE_FORMAT_A32:
return texture->texWidth * 4;
case KINC_IMAGE_FORMAT_RGBA64U:
return texture->texWidth * 8;
}
}

Expand Down
2 changes: 2 additions & 0 deletions Backends/Graphics5/Vulkan/Sources/kinc/backend/graphics5/pipeline.c.h
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Expand Up @@ -248,6 +248,8 @@ static VkFormat convert_format(kinc_g5_render_target_format_t format) {
return VK_FORMAT_R32G32B32A32_SFLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_FLOAT:
return VK_FORMAT_R16G16B16A16_SFLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER:
return VK_FORMAT_R16G16B16A16_UINT;
case KINC_G5_RENDER_TARGET_FORMAT_32BIT_RED_FLOAT:
return VK_FORMAT_R32_SFLOAT;
case KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT:
Expand Down
5 changes: 4 additions & 1 deletion Backends/Graphics5/Vulkan/Sources/kinc/backend/graphics5/texture.c.h
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Expand Up @@ -109,7 +109,7 @@ static void prepare_texture_image(uint8_t *tex_colors, uint32_t tex_width, uint3
}
}
}
else if (tex_format == VK_FORMAT_R16G16B16A16_SFLOAT) {
else if (tex_format == VK_FORMAT_R16G16B16A16_SFLOAT || tex_format == VK_FORMAT_R16G16B16A16_UINT) {
uint16_t *data16 = (uint16_t *)data;
uint16_t *tex_colors16 = (uint16_t *)tex_colors;
for (uint32_t y = 0; y < tex_height; y++) {
Expand Down Expand Up @@ -171,6 +171,8 @@ static VkFormat convert_image_format(kinc_image_format_t format) {
return VK_FORMAT_R32G32B32A32_SFLOAT;
case KINC_IMAGE_FORMAT_RGBA64:
return VK_FORMAT_R16G16B16A16_SFLOAT;
case KINC_IMAGE_FORMAT_RGBA64U:
return VK_FORMAT_R16G16B16A16_UINT;
case KINC_IMAGE_FORMAT_RGB24:
return VK_FORMAT_B8G8R8A8_UNORM;
case KINC_IMAGE_FORMAT_A32:
Expand All @@ -193,6 +195,7 @@ static int format_byte_size(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_RGBA128:
return 16;
case KINC_IMAGE_FORMAT_RGBA64:
case KINC_IMAGE_FORMAT_RGBA64U:
return 8;
case KINC_IMAGE_FORMAT_RGB24:
return 4;
Expand Down
3 changes: 2 additions & 1 deletion Sources/kinc/graphics4/rendertarget.h
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Expand Up @@ -23,7 +23,8 @@ typedef enum kinc_g4_render_target_format {
KINC_G4_RENDER_TARGET_FORMAT_128BIT_FLOAT,
KINC_G4_RENDER_TARGET_FORMAT_16BIT_DEPTH,
KINC_G4_RENDER_TARGET_FORMAT_8BIT_RED,
KINC_G4_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT
KINC_G4_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT,
KINC_G4_RENDER_TARGET_FORMAT_64BIT_INTEGER
} kinc_g4_render_target_format_t;

typedef struct kinc_g4_render_target {
Expand Down
3 changes: 2 additions & 1 deletion Sources/kinc/graphics5/rendertarget.h
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Expand Up @@ -21,7 +21,8 @@ typedef enum kinc_g5_render_target_format {
KINC_G5_RENDER_TARGET_FORMAT_128BIT_FLOAT,
KINC_G5_RENDER_TARGET_FORMAT_16BIT_DEPTH,
KINC_G5_RENDER_TARGET_FORMAT_8BIT_RED,
KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT
KINC_G5_RENDER_TARGET_FORMAT_16BIT_RED_FLOAT,
KINC_G5_RENDER_TARGET_FORMAT_64BIT_INTEGER
} kinc_g5_render_target_format_t;

typedef struct kinc_g5_render_target {
Expand Down
4 changes: 3 additions & 1 deletion Sources/kinc/image.h
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Expand Up @@ -30,7 +30,8 @@ typedef enum kinc_image_format {
KINC_IMAGE_FORMAT_RGBA64,
KINC_IMAGE_FORMAT_A32,
KINC_IMAGE_FORMAT_BGRA32,
KINC_IMAGE_FORMAT_A16
KINC_IMAGE_FORMAT_A16,
KINC_IMAGE_FORMAT_RGBA64U
} kinc_image_format_t;

typedef struct kinc_image {
Expand Down Expand Up @@ -599,6 +600,7 @@ int kinc_image_format_sizeof(kinc_image_format_t format) {
case KINC_IMAGE_FORMAT_BGRA32:
return 4;
case KINC_IMAGE_FORMAT_RGBA64:
case KINC_IMAGE_FORMAT_RGBA64U:
return 8;
case KINC_IMAGE_FORMAT_A32:
return 4;
Expand Down
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