51 lines
1.2 KiB
GLSL
51 lines
1.2 KiB
GLSL
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#version 450
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#extension GL_ARB_separate_shader_objects : enable
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layout(location = 0) in vec3 vPos;
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layout(location = 1) in vec2 vUv;
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layout(location = 0) out vec2 fUv;
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layout(binding = 0) uniform Transform
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{
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mat4 viewProj;
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vec3 pos;
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vec2 size;
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} trans;
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mat4 RemoveRotation(mat4 inMat)
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{
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inMat[0][0] = 1.0;
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inMat[0][1] = 0.0;
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inMat[0][2] = 0.0;
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inMat[1][0] = 0.0;
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inMat[1][1] = 1.0;
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inMat[1][2] = 0.0;
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inMat[2][0] = 0.0;
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inMat[2][1] = 0.0;
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inMat[2][2] = 1.0;
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return inMat;
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}
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void main()
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{
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// The vec4 we will use to set gl_Position
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vec4 pos = vec4(trans.pos, 1.0f);
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// Adjust the position based on the camera view
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// Extract the right and up vectors from the view matrix
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vec3 right = vec3(trans.viewProj[0][0], trans.viewProj[1][0], trans.viewProj[2][0]);
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vec3 up = vec3(trans.viewProj[0][1], trans.viewProj[1][1], trans.viewProj[2][1]);
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// Adjust the quad vertices to face the camera
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// The inPosition.xy should be in NDC space, from -1 to 1
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pos.xyz += (right * vPos.x * trans.size.x) + (up * vPos.y * trans.size.y);
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// Output position
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gl_Position = trans.viewProj * pos;
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// Pass through the texture coordinates
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fUv = vUv;
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}
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