make GL 3.0 support bars scroll

Change-Id: I71d8d94f410e6c67d0e188ea2e0f79eb151758e0

2 files changed, 10 insertions, 2 deletions

diff --git a/chart2/opengl/shape3DFragmentShaderV300.glsl b/chart2/opengl/shape3DFragmentShaderV300.glsl
index fee81d469d3d..05e27701c807 100644
--- a/chart2/opengl/shape3DFragmentShaderV300.glsl
+++ b/chart2/opengl/shape3DFragmentShaderV300.glsl
@@ -23,9 +23,13 @@ uniform vec4 lightPosWorldspace[MAX_LIGHT_NUM];
 uniform float lightPower[MAX_LIGHT_NUM];
 uniform int lightNum;
 uniform vec4 lightAmbient;
+uniform int undraw;
+uniform float minCoordX;
 
 void main()
 {
+    if ((positionWorldspace.x <= minCoordX) && (undraw == 1))
+        discard;
     vec3 colorTotal = vec3(0.0f, 0.0f, 0.0f);
 
     vec3 vertexPositionCameraspace = (V * vec4(positionWorldspace,1)).xyz;
diff --git a/chart2/opengl/shape3DVertexShaderV300.glsl b/chart2/opengl/shape3DVertexShaderV300.glsl
index 6737004cb914..a8da294fb3cd 100644
--- a/chart2/opengl/shape3DVertexShaderV300.glsl
+++ b/chart2/opengl/shape3DVertexShaderV300.glsl
@@ -16,12 +16,16 @@ uniform mat4 P;
 uniform mat4 M;
 uniform mat4 V;
 uniform mat3 normalMatrix;
+uniform float minCoordX;
+uniform float maxCoordX;
 
 void main()
 {
-    gl_Position =  P * V * M * vec4(vertexPositionModelspace,1);
+	  positionWorldspace = (M * vec4(vertexPositionModelspace,1)).xyz;
 
-    positionWorldspace = (M * vec4(vertexPositionModelspace,1)).xyz;
+	  positionWorldspace.x = clamp(positionWorldspace.x, minCoordX, maxCoordX);
+
+	  gl_Position =  P * V * vec4(positionWorldspace,1);
 
     normalCameraspace = normalize(mat3(V) * normalMatrix * vertexNormalModelspace);
 }