64 lines
2.1 KiB
GLSL
64 lines
2.1 KiB
GLSL
#ifdef USE_FLOAT64
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in vec3 positionHigh;
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in vec3 positionLow;
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in vec3 prevPositionHigh;
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in vec3 prevPositionLow;
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in vec3 nextPositionHigh;
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in vec3 nextPositionLow;
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#else
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in vec3 position;
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in vec3 prevPosition;
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in vec3 nextPosition;
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#endif
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in vec4 pickColor;
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in vec4 showColorWidthAndTexCoord;
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in float alpha;
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out vec4 v_pickColor;
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out vec4 v_color;
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out vec2 v_st;
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out float v_width;
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out float v_polylineAngle;
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void main()
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{
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float show = showColorWidthAndTexCoord.x;
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vec4 color = czm_decodeRGB8(showColorWidthAndTexCoord.y);
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float width = showColorWidthAndTexCoord.z;
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float texCoord = showColorWidthAndTexCoord.w;
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///////////////////////////////////////////////////////////////////////////
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bool usePrevious = texCoord == 1.0;
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float expandDir = gl_VertexID % 2 == 1 ? 1.0 : -1.0;
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float polylineAngle;
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#ifdef USE_FLOAT64
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vec4 positionEC = czm_translateRelativeToEye(positionHigh, positionLow);
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vec4 prevPositionEC = czm_translateRelativeToEye(prevPositionHigh, prevPositionLow);
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vec4 nextPositionEC = czm_translateRelativeToEye(nextPositionHigh, nextPositionLow);
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vec4 positionWC = getPolylineWindowCoordinates(positionEC, prevPositionEC, nextPositionEC, expandDir, width, usePrevious, polylineAngle);
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#else
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vec4 positionEC = czm_modelView * vec4(position, 1.0);
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vec4 prevPositionEC = czm_modelView * vec4(prevPosition, 1.0);
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vec4 nextPositionEC = czm_modelView * vec4(nextPosition, 1.0);
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// Positions are already in eye space; use the EC variant to skip the redundant transform.
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vec4 positionWC = getPolylineWindowCoordinatesEC(positionEC, prevPositionEC, nextPositionEC, expandDir, width, usePrevious, polylineAngle);
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#endif
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///////////////////////////////////////////////////////////////////////////
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gl_Position = czm_viewportOrthographic * positionWC * show;
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v_pickColor = pickColor / 255.0;
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v_color = color;
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v_color.a *= alpha / 255.0 * show;
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v_st.s = texCoord;
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v_st.t = czm_writeNonPerspective(clamp(expandDir, 0.0, 1.0), gl_Position.w);
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v_width = width;
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v_polylineAngle = polylineAngle;
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}
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