An image viewer for anyone related to computer graphics.

Version 2.1 x64 Windows: Download

Currently the following image formats can be imported:

• PNG, JPG, BMP
• HDR, PFM
• KTX, DDS
• EXR (based on tinyexr)

Exporting is supported for:

• PNG, JPG, BMP
• HDR, PFM
• KTX, DDS

The status bar displays the current texture coordinates (cursor) along with the corresponding RGBA color values in linear color space. The display type can be changed from linear color space to Srgb color space via: View->Pixel Display->Format.

Select preferred mipmap level and layer (face) of DDS and KTX textures:

View cubemaps in crossview:

View and navigate through cubemaps in a projection view:

View the raw polar image:

View and navigate through the polar image in a projection view:

Add a custom or predefined filter to your image:

Or define a custom filter like this. Filter are GLSL compute shader. The work group size will be set by the application and only the main method needs to be implemented (this method will be called once for every pixel). The detailed filter guide can be found here.

// general information about the shader
#setting title, Gamma Correction
#setting description, Nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems. Formula: (Factor * V) ^ Gamma.

// define displayed name, variable name (for the shader), variable type, default value and optional minimum, maximum
#param Gamma, gamma, float, 0.45454545, 0
#param Factor, factor, float, 1.0, 0

void main()
{
  // retrieve the pixel coordiante
  ivec2 pixelCoord = ivec2(gl_GlobalInvocationID.xy) + pixelOffset;
  
  // get the current pixel color
  vec4 color = texelFetch(src_image, pixelCoord, 0);
  // calculate the new color
  vec3 newColor = pow(factor * color.rgb, vec3(gamma));
  // save the new color in the destination image
  imageStore(dst_image, pixelCoord, vec4(newColor, color.a));
}

Compare pictures side by side. In this example the image before (right) and after (left) tonemapping:

You can even import more than one image and combine them into one with a user defined function:

I0 and I1 are the pixels from the first and the second image. RGB values are in range [0,1] and you can combine them with following operators: * + - / ^. Numerical constants can be used as well. The detailed image equation guide can be found here.