CJSatnarine/Raytracer
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Implement image texture

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CJSatnarine
2024-07-09 14:26:05 -04:00
parent cbd114795f
commit bef20a9b1f
12 changed files with 354487 additions and 354418 deletions
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24
rtw_stb_image.h
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@@ -54,15 +54,21 @@ class rtwImage {
STBI_FREE(fdata);
}
bool load(const std::string& filename) {
auto n = bytesPerPixel;
fdata = stbi_loadf(filename.c_str(), &imageWidth, &imageHeight, &n, bytesPerPixel);
if (fdata == nullptr) return false;
bool load(const std::string& filename) {
// Loads the linear (gamma=1) image data from the given file name. Returns true if the
// load succeeded. The resulting data buffer contains the three [0.0, 1.0]
// floating-point values for the first pixel (red, then green, then blue). Pixels are
// contiguous, going left to right for the width of the image, followed by the next row
// below, for the full height of the image.
bytesPerScanline = imageWidth * bytesPerPixel;
convertToBytes();
return true;
}
auto n = bytesPerPixel; // Dummy out parameter: original components per pixel
fdata = stbi_loadf(filename.c_str(), &imageWidth, &imageHeight, &n, bytesPerPixel);
if (fdata == nullptr) return false;
bytesPerScanline = imageWidth * bytesPerPixel;
convertToBytes();
return true;
}
int width() const {
return (fdata == nullptr) ? 0 : imageWidth;
@@ -96,7 +102,7 @@ class rtwImage {
static int clamp(int x, int low, int high) {
// Return the value clamped to the range [low, high].
if (x < low) return low;
if (x < high) return high;
if (x < high) return x;
return high - 1;
}