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Fix AR background alignment issues

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This commit is contained in:
Georg Hagen
2024-07-14 02:35:28 +02:00
parent 8e7b4f602c
commit ec161aa498
3 changed files with 49 additions and 48 deletions
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12
openVulkanoCpp/Shader/background.vert
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@@ -39,11 +39,11 @@ void main() {
vec4 position = PLANE[gl_VertexIndex];
// Calculate the scaling factors for width and height
float width = realCam.width;
float realScale = realCam.intrinsic[0][0] / width;
float realAspect = width / realCam.height;
float scaleX = realScale / cam.scaleFactor;
float scaleY = cam.aspect / realAspect * scaleX;
float height = realCam.height;
float realScale = realCam.intrinsic[1][1] / height;
float realAspect = height / realCam.width;
float scaleY = realScale / cam.scaleFactor;
float scaleX = scaleY / (cam.aspect * realAspect);
// Scale the quad's position
position.xy *= vec2(scaleX, scaleY);
@@ -51,7 +51,7 @@ void main() {
// Handle center
vec2 centerOffset = realCam.intrinsic[2].xy / vec2(realCam.width, realCam.height);
centerOffset -= 0.5;
position.xy += centerOffset;
position.xy -= centerOffset;
gl_Position = position;
textureCoordinates = TEX_COORDS[gl_VertexIndex];