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cpp_questions's Issues
why many times I see length as NULL?
why most of OpenGL functions' location is not known at compile-time?
Since there are many different versions of OpenGL drivers, the location of most of its functions is not known at compile-time and needs to be queried at run-time.
why?
GL: is it true that we cannot use `layout (location = 2) in vec2 circle_radii_;` in fragment shader?
I know we can pass the layout (location = 2) in vec2 circle_radii_;
from the vertex shader to fragment shader using an intermediate variable. But I have not succeeded in passing the layout
variable directly to fragment shader.
.lib and include header
is it that the headers only have definition and the .lib have the actual implementation?
how to allow two VAOs use the same VBO?
x64 folder, sln, vcxproj
why I have the following:
learnopengl\x64\Debug
learnopengl\learnopengl\x64\Debug
what are the functions of sln, vcxproj file?
what are vcxproj.filters, vcxproj.user?
how to read VS prompt
relative file path
the maximum number of vertex attributes output weird number
glUseProgram first and then set uniform
ourShader.use();
ourShader.setFloat("hoffset", 0.5f);
void use()
{
glUseProgram(ID);
}
void setFloat(const std::string& name, float value) const {
glUniform1f(glGetUniformLocation(ID, name.c_str()), value);
}
glVertexAttribPointer normalized?
The next argument specifies if we want the data to be normalized. If we're inputting integer data types (int, byte) and we've set this to GL_TRUE, the integer data is normalized to 0 (or -1 for signed data) and 1 when converted to float. This is not relevant for us so we'll leave this at GL_FALSE.
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