if EGLAutomaticStereoRenderingProperty=true , then glCompileShader failed

[vd3d]

Hi,

I have an existing application and a shader, everything works fine until I set : EGLAutomaticStereoRenderingProperty = true

I got the following error message (looks like an unexpectederror):

Info log:
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Here is my shader code:

`
#version 100

// We use highp to avoid problems with mobile devices

// highp is always available in vertex shaders
precision highp float;
precision highp int;

// automatic uniforms
uniform vec3 render_camera_pos_low;
uniform vec3 render_camera_pos_high;
uniform mat4 render_mvp_rel_camera;
uniform mat4 render_mv_rel_camera;
uniform mat4 render_mvp;
uniform mat4 render_mv;
uniform mat4 render_projection;
uniform vec3 render_forward;
uniform vec4 render_viewport;
uniform vec2 render_pixelscale;

// Returns the position, relative to the camera (e.g. world space, but relative to the camera)
vec3 getRelativePosition(vec3 posLow, vec3 posHigh) {
vec3 lowDifference = posLow - render_camera_pos_low;
vec3 highDifference = posHigh - render_camera_pos_high;
return lowDifference + highDifference;
}

// Returns the position, relative to the camera (e.g. world space, but relative to the camera)
vec3 getRelativePosition(vec3 posLow, vec3 posHigh, vec3 cameraPosLow, vec3 cameraPosHigh) {
vec3 lowDifference = posLow - cameraPosLow;
vec3 highDifference = posHigh - cameraPosHigh;
return lowDifference + highDifference;
}

// Transforms from world to camera coordinates
vec3 relPositionToCamera(vec3 relPos) {
return (render_mv_rel_camera * vec4(relPos, 1.0)).xyz;
}

// Projects a relative position (relative to the camera). The result is a homogenous view position (e.g. in clip space).
vec4 projectRelPosition(vec3 relPos) {
return render_mvp_rel_camera * vec4(relPos, 1.0);
}

// Projects from camera coordinates (e.g. camera space). The result is a homogenous view position (e.g. in clip space).
vec4 projectCameraPosition(vec3 relPos) {
return render_projection * vec4(relPos, 1.0);
}

// Projects a position, encoded as a double-float. The result is a homogenous view position (e.g. in clip space).
vec4 projectPosition(vec3 posLow, vec3 posHigh) {
return render_mvp_rel_camera * vec4(getRelativePosition(posLow, posHigh), 1.0);
}

// Projects a position, with custom parameters. Used mainly for draping.
vec4 projectPosition(vec3 posLow, vec3 posHigh, mat4 transformation, vec3 cameraPosLow, vec3 cameraPosHigh) {
vec3 lowDifference = posLow - cameraPosLow;
vec3 highDifference = posHigh - cameraPosHigh;
return transformation * vec4(lowDifference + highDifference, 1.0);
}

// Projects an absolute position, encoded as a float. The result is a homogenous view position (e.g. in clip space).
vec4 projectPosition(vec3 pos) {
return render_mvp * vec4(pos, 1.0);
}

vec4 projectDirectionVector(vec3 vector) {
return render_mvp * vec4(vector, 0.0);
}

vec2 ndcToPixel(vec2 ndcPt) {
return (ndcPt + 1.0) * render_pixelscale;
}

vec2 pixelToNdc(vec2 pixelPt) {
return pixelPt / render_pixelscale - 1.0;
}

// Indicates if a position is invalid (see GeometryPool invalid vertex)
bool isPositionInvalid(vec3 posLow, vec3 posHigh) {
/**

• GeometryPool uses FLOAT_MAX. Here we require < 1M km for just the low part. That should safely
• cover all abnormal values.
  */
  return !(posLow.x < 1e9);
  }

// Position as defined relative to uLocalOrigin
attribute vec3 aPosition;
// Texture uv coordinates
attribute vec2 aUV;
// Geocentric normal
attribute vec3 aGeocentricNormal;
// World normal
attribute vec3 aNormal;
// Elevation above ellipsoid
attribute float aElevation;

// The local origin
uniform vec3 uLocalOrigin;

// Terrain texture coordinates
varying vec2 vTextureUVTerrain;
// The point of the vertex on the ellipsoid, in world reference
varying vec4 vZeroElevationWorldPoint;
// Normal on the terrain in world coordinates
varying vec3 vNormal;
// Normal on the ellipsoid
varying vec3 vGeocentricNormal;

void main() {
vTextureUVTerrain = aUV;
vZeroElevationWorldPoint = vec4(aPosition.xyz - aElevation * aGeocentricNormal, 0.0);
vNormal = aNormal;
vGeocentricNormal = aGeocentricNormal;

gl_Position = projectPosition(aPosition, uLocalOrigin);
}
`

[austinkinross]

Mike Riches (@MikeRiches), do you know what might be causing this?

[MikeRiches]

Try converting the shader to #version 300.

[MikeRiches]

You may also need to make sure that your EGL_CONTEXT_CLIENT_VERSION is set to 3.

[vd3d]

Thanks,

EGL_CONTEXT_CLIENT_VERSION is set to 3

The shader version is set to 100, but I have see some code inside ANGLE that "try" convert the shader to version 300. Not sure it really work and it is really related !

I have see some cases that are not well handled, by example:

• you add "#version 300" but you don't remove the current version command
• you add "precision" but you don't remove the one in the shader

I have to debug more to see what is missing, can you help please ?