43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
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#ifndef UTIL_IMAGE_LOADER_H
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#define UTIL_IMAGE_LOADER_H
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#include <SDL_opengl.h>
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#include <string>
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#include "gl_pagedtexture.h"
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namespace ImageUtil {
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typedef std::pair<uint16_t, uint16_t> WidthHeightPair;
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struct NextPowerOfTwo {
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NextPowerOfTwo(uint32_t _w, uint32_t _h) {
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w = 1; h = 1;
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while (w < _w) { w <<= 1; }
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while (h < _h) { h <<= 1; }
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}
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uint32_t w;
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uint32_t h;
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};
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// hardcoded data for known images
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WidthHeightPair lookupImageSize(const std::string & name, const uint32_t size);
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// load a rgb image
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OpenGL::PagedTexture loadImageRAW(const std::string & name);
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// load a palette image and guess the palette filename
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OpenGL::PagedTexture loadImageRAT(const std::string & name);
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// load a palette image using palette file
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OpenGL::PagedTexture loadImageRATWithPalette(const std::string & name,
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const std::string & palette_file);
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// plain simple garden-variety create-a-texture; needs to be ^2
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GLuint createGLTexture(GLsizei w, GLsizei h, bool rgba, const void* pixels);
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// blitting a buffer into another; they should exist!
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void copyImage2Image(uint8_t *dest, const uint8_t *src, const uint16_t
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srcWidth, const uint16_t srcHeight, const uint16_t destWidth);
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OpenGL::PagedTexture createEmbeddedTexture(GLsizei w, GLsizei h, bool rgba,
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const void *pixels);
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}
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#endif
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