private ProgramHolder createProgramHolder()
{
ProgramHolder holder = new ProgramHolder();
holder.program = createProgram("attribute vec2 aPosition;\nattribute float aVignette;\nattribute vec2 aTextureCoord;\nvarying vec2 vTextureCoord;\nvarying float vVignette;\nuniform float uTextureCoordScale;\nvoid main() {\n gl_Position = vec4(aPosition, 0.0, 1.0);\n vTextureCoord = aTextureCoord.xy * uTextureCoordScale;\n vVignette = aVignette;\n}\n", "precision mediump float;\nvarying vec2 vTextureCoord;\nvarying float vVignette;\nuniform sampler2D uTextureSampler;\nvoid main() {\n gl_FragColor = vVignette * texture2D(uTextureSampler, vTextureCoord);\n}\n");
if (holder.program == 0)
{
throw new Java.Lang.RuntimeException("Could not create program");
}
holder.aPosition = GLES20.GlGetAttribLocation(holder.program, "aPosition");
checkGlError("glGetAttribLocation aPosition");
if (holder.aPosition == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aPosition");
}
holder.aVignette = GLES20.GlGetAttribLocation(holder.program, "aVignette");
checkGlError("glGetAttribLocation aVignette");
if (holder.aVignette == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aVignette");
}
holder.aTextureCoord = GLES20.GlGetAttribLocation(holder.program, "aTextureCoord");
checkGlError("glGetAttribLocation aTextureCoord");
if (holder.aTextureCoord == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for aTextureCoord");
}
holder.uTextureCoordScale = GLES20.GlGetUniformLocation(holder.program, "uTextureCoordScale");
checkGlError("glGetUniformLocation uTextureCoordScale");
if (holder.uTextureCoordScale == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for uTextureCoordScale");
}
holder.uTextureSampler = GLES20.GlGetUniformLocation(holder.program, "uTextureSampler");
checkGlError("glGetUniformLocation uTextureSampler");
if (holder.uTextureSampler == -1)
{
throw new Java.Lang.RuntimeException("Could not get attrib location for uTextureSampler");
}
return(holder);
}
public void onProjectionChanged(HeadMountedDisplay hmd, EyeParams leftEye, EyeParams rightEye, float zNear, float zFar)
{
mHmd = new HeadMountedDisplay(hmd);
mLeftEyeFov = new FieldOfView(leftEye.getFov());
mRightEyeFov = new FieldOfView(rightEye.getFov());
ScreenParams screen = mHmd.getScreen();
CardboardDeviceParams cdp = mHmd.getCardboard();
if (mProgramHolder == null)
{
mProgramHolder = createProgramHolder();
}
EyeViewport leftEyeViewport = initViewportForEye(leftEye, 0.0F);
EyeViewport rightEyeViewport = initViewportForEye(rightEye, leftEyeViewport.width);
leftEye.getFov().toPerspectiveMatrix(zNear, zFar, leftEye.getTransform().GetPerspective(), 0);
rightEye.getFov().toPerspectiveMatrix(zNear, zFar, rightEye.getTransform().GetPerspective(), 0);
float textureWidthM = leftEyeViewport.width + rightEyeViewport.width;
float textureHeightM = Math.Max(leftEyeViewport.height, rightEyeViewport.height);
float xPxPerM = screen.getWidth() / screen.getWidthMeters();
float yPxPerM = screen.getHeight() / screen.getHeightMeters();
int textureWidthPx = Math.Round(textureWidthM * xPxPerM);
int textureHeightPx = Math.Round(textureHeightM * yPxPerM);
float xEyeOffsetMScreen = screen.getWidthMeters() / 2.0F - cdp.getInterpupillaryDistance() / 2.0F;
float yEyeOffsetMScreen = cdp.getVerticalDistanceToLensCenter() - screen.getBorderSizeMeters();
mLeftEyeDistortionMesh = createDistortionMesh(leftEye, leftEyeViewport, textureWidthM, textureHeightM, xEyeOffsetMScreen, yEyeOffsetMScreen);
xEyeOffsetMScreen = screen.getWidthMeters() - xEyeOffsetMScreen;
mRightEyeDistortionMesh = createDistortionMesh(rightEye, rightEyeViewport, textureWidthM, textureHeightM, xEyeOffsetMScreen, yEyeOffsetMScreen);
setupRenderTextureAndRenderbuffer(textureWidthPx, textureHeightPx);
}
