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dwmkerr / sharpgl

Use OpenGL in .NET applications. SharpGL wraps all modern OpenGL features and offers a powerful scene graph to aid development.
MIT License
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ShaderProgram.SetUniform1 does not work for int uniforms #226

Open VE3NEA opened 1 year ago

VE3NEA commented 1 year ago

This statement does not change the integer uniform:

shaderProgram.SetUniform1(gl, "my_texture", 1);

This one works orrectly:

 gl.Uniform1(shaderProgram.GetUniformLocation(gl, "my_texture"), 1);

The problem with the first statement is that the third parameter of SetUniform1 is declared as float, so if an int value is passed, it is typecasted to float before the call to gl.Uniform1.

brisingre commented 6 months ago

This got me as well! Took us a week to figure it out before my friend found this ticket...