add bars scroll shaders

Change-Id: I006062986534950485ffa9e280caad3e37c2f35f

3 files changed, 152 insertions, 2 deletions

diff --git a/chart2/opengl/shape3DFragmentShaderBatchScroll.glsl b/chart2/opengl/shape3DFragmentShaderBatchScroll.glsl
new file mode 100644
index 000000000000..33e970fb918c
--- /dev/null
+++ b/chart2/opengl/shape3DFragmentShaderBatchScroll.glsl
@@ -0,0 +1,111 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#version 330 core
+#define MAX_LIGHT_NUM 8
+
+in vec3 positionWorldspace;
+in vec3 normalCameraspace;
+in vec4 fragBarColor;
+uniform mat4 V;
+uniform int undraw;
+uniform float minCoordX;
+out vec4 actualColor;
+struct MaterialParameters
+{
+    vec4 ambient;
+    vec4 diffuse;
+    vec4 specular;
+    vec4 materialColor;
+
+    int twoSidesLighting;
+    float shininess;
+    float pad;
+    float pad1;
+};
+
+layout(std140) uniform GlobalMaterialParameters
+{
+    MaterialParameters matralParameter;
+}Material;
+
+struct LightSource
+{
+    vec4   lightColor;
+    vec4   positionWorldspace;
+    float  lightPower;
+    float  pad1;
+    float  pad2;
+    float  pad3;
+};
+
+layout(std140) uniform GlobalLights
+{
+    int         lightNum;
+    vec4        ambient;
+    LightSource light[MAX_LIGHT_NUM];
+} Lights;
+
+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;
+
+    vec3 MaterialDiffuseColor = fragBarColor.rgb;
+
+    vec3 normalDirectionCameraspace = normalCameraspace;
+    vec3 eyeDirectionCameraspace = normalize(vec3(0, 0, 0) - vertexPositionCameraspace);
+    float attenuation = 1.0;
+    int i = 0;
+    vec3 lightDirectionCameraspace;
+    vec3 vertexToLightSource;
+
+    vec3 lightAmbient = Lights.ambient.rgb *
+                        MaterialDiffuseColor *
+                        Material.matralParameter.ambient.rgb;
+
+    for (i = 0; i < Lights.lightNum; i++)
+    {
+        float  LightPower = Lights.light[i].lightPower;
+        lightDirectionCameraspace = normalize((V * Lights.light[i].positionWorldspace).xyz);
+
+        float cosTheta = clamp(dot(normalDirectionCameraspace,lightDirectionCameraspace), 0,1);
+        vec3 lightDiffuse = LightPower *
+                            attenuation *
+                            Lights.light[i].lightColor.rgb *
+                            MaterialDiffuseColor *
+                            Material.matralParameter.diffuse.rgb *
+                            cosTheta;
+
+        vec3 specularReflection;
+        if (dot(normalDirectionCameraspace, lightDirectionCameraspace) < 0)
+        {
+            specularReflection = vec3(0.0, 0.0, 0.0);
+        }
+        else
+        {
+            vec3 R = reflect(-lightDirectionCameraspace,normalDirectionCameraspace);
+            float cosAlpha = clamp(dot(eyeDirectionCameraspace, R), 0,1);
+            specularReflection = attenuation *
+                                 LightPower *
+                                 Lights.light[i].lightColor.rgb *
+                                 Material.matralParameter.specular.rgb *
+                                 MaterialDiffuseColor *
+                                 pow(max(0.0, cosAlpha), Material.matralParameter.shininess);
+        }
+        colorTotal += lightDiffuse + specularReflection;
+
+    }
+    colorTotal += lightAmbient;
+    actualColor = vec4(colorTotal, 1.0);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/chart2/opengl/shape3DVertexShader.glsl b/chart2/opengl/shape3DVertexShader.glsl
index d0bd69370a49..7f8a6f06e858 100644
--- a/chart2/opengl/shape3DVertexShader.glsl
+++ b/chart2/opengl/shape3DVertexShader.glsl
@@ -20,10 +20,10 @@ uniform mat3 normalMatrix;
 
 void main()
 {
-    gl_Position =  P * V * M * vec4(vertexPositionModelspace,1);
-
     positionWorldspace = (M * vec4(vertexPositionModelspace,1)).xyz;
 
+    gl_Position =  P * V * vec4(positionWorldspace,1);
+
     normalCameraspace = normalize(mat3(V) * normalMatrix * vertexNormalModelspace);
 }
 
diff --git a/chart2/opengl/shape3DVertexShaderBatchScroll.glsl b/chart2/opengl/shape3DVertexShaderBatchScroll.glsl
new file mode 100644
index 000000000000..87946f7d076b
--- /dev/null
+++ b/chart2/opengl/shape3DVertexShaderBatchScroll.glsl
@@ -0,0 +1,39 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+#version 330 core
+in vec3 vertexPositionModelspace;
+in vec3 vertexNormalModelspace;
+in mat4 M;
+in mat3 normalMatrix;
+in vec4 barColor;
+
+out vec3 positionWorldspace;
+out vec3 normalCameraspace;
+out vec4 fragBarColor;
+
+uniform mat4 P;
+uniform mat4 V;
+uniform mat4 transMatrix;
+uniform float minCoordX;
+uniform float maxCoordX;
+
+void main()
+{
+	positionWorldspace = (transMatrix * 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);
+
+	fragBarColor = barColor;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */