gzdoom-gles/wadsrc/static/shaders/glsl/screenquadscale.vp


layout (location = 0) in vec4 PositionInProjection;
layout (location = 1) in vec2 UV;
out vec2 TexCoord;

void main()
{
	gl_Position = PositionInProjection;
	TexCoord = UV * UVScale;
}
- use static buffer data and a uniform to handle the texture positioning of the present shader. That's again one less write access to the buffer. The uniform method was chosen because this way a buffer update can be completely avoided, and setting a single uniform is a lot cheaper and simpler to handle. 2016-08-08 14:06:02 +00:00
- specify vertex attributes in the shader source for Vulkan compatibility. 2018-06-13 06:40:04 +00:00			`layout (location = 0) in vec4 PositionInProjection;`
			`layout (location = 1) in vec2 UV;`
- use static buffer data and a uniform to handle the texture positioning of the present shader. That's again one less write access to the buffer. The uniform method was chosen because this way a buffer update can be completely avoided, and setting a single uniform is a lot cheaper and simpler to handle. 2016-08-08 14:06:02 +00:00			`out vec2 TexCoord;`

			`void main()`
			`{`
			`gl_Position = PositionInProjection;`
			`TexCoord = UV * UVScale;`
			`}`