add getters / setters for texture border color

include/ACGL/OpenGL/Objects/Texture.hh

@@ -102,27 +102,28 @@ public:
     // ============================================================================================ GETTERS \/
     // ==================================================================================================== \/
 public:
-    inline GLuint  getObjectName     (void) const { return mObjectName;     }
-    inline GLenum  getTarget         (void) const { return mTarget;         }
-    inline GLsizei getWidth          (void) const { return mWidth;          }
-    inline GLsizei getHeight         (void) const { return mHeight;         }
-    inline GLsizei getDepth          (void) const { return mDepth;          }
-    inline GLenum  getInternalFormat (void) const { return mInternalFormat; }
-    inline GLint   getMinFilter      (void) const { return getParameterI(GL_TEXTURE_MIN_FILTER); }
-    inline GLint   getMagFilter      (void) const { return getParameterI(GL_TEXTURE_MAG_FILTER); }
-    inline GLint   getBaseLevel      (void) const { return getParameterI(GL_TEXTURE_BASE_LEVEL); }
-    inline GLint   getMaxLevel       (void) const { return getParameterI(GL_TEXTURE_MAX_LEVEL); }
-    inline GLint   getMinLOD         (void) const { return getParameterI(GL_TEXTURE_MIN_LOD); }
-    inline GLint   getMaxLOD         (void) const { return getParameterI(GL_TEXTURE_MAX_LOD); }
-    inline GLfloat getLODBias        (void) const { return getParameterF(GL_TEXTURE_LOD_BIAS); }
-    inline GLenum  getCompareMode    (void) const { return (GLenum) getParameterI(GL_TEXTURE_COMPARE_MODE); }
-    inline GLenum  getCompareFunc    (void) const { return (GLenum) getParameterI(GL_TEXTURE_COMPARE_FUNC); }
+    inline GLuint     getObjectName     (void) const { return mObjectName;     }
+    inline GLenum     getTarget         (void) const { return mTarget;         }
+    inline GLsizei    getWidth          (void) const { return mWidth;          }
+    inline GLsizei    getHeight         (void) const { return mHeight;         }
+    inline GLsizei    getDepth          (void) const { return mDepth;          }
+    inline GLenum     getInternalFormat (void) const { return mInternalFormat; }
+    inline GLint      getMinFilter      (void) const { return getParameterI(GL_TEXTURE_MIN_FILTER); }
+    inline GLint      getMagFilter      (void) const { return getParameterI(GL_TEXTURE_MAG_FILTER); }
+    inline GLint      getBaseLevel      (void) const { return getParameterI(GL_TEXTURE_BASE_LEVEL); }
+    inline GLint      getMaxLevel       (void) const { return getParameterI(GL_TEXTURE_MAX_LEVEL); }
+    inline GLint      getMinLOD         (void) const { return getParameterI(GL_TEXTURE_MIN_LOD); }
+    inline GLint      getMaxLOD         (void) const { return getParameterI(GL_TEXTURE_MAX_LOD); }
+    inline GLfloat    getLODBias        (void) const { return getParameterF(GL_TEXTURE_LOD_BIAS); }
+    inline GLenum     getCompareMode    (void) const { return (GLenum) getParameterI(GL_TEXTURE_COMPARE_MODE); }
+    inline GLenum     getCompareFunc    (void) const { return (GLenum) getParameterI(GL_TEXTURE_COMPARE_FUNC); }
+    inline glm::vec4  getBorderColor    (void) const { return getParameter4F(GL_TEXTURE_BORDER_COLOR); }
     #ifndef ACGL_OPENGLES_VERSION_20
-    inline GLenum  getWrapS          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_S); }
-    inline GLenum  getWrapT          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_T); }
-    inline GLenum  getWrapR          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_R); }
+    inline GLenum     getWrapS          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_S); }
+    inline GLenum     getWrapT          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_T); }
+    inline GLenum     getWrapR          (void) const { return (GLenum) getParameterI(GL_TEXTURE_WRAP_R); }
     #endif // ACGL_OPENGLES_VERSION_20
-    inline glm::uvec3 getSize        (void) const { return glm::uvec3( mWidth, mHeight, mDepth ); }
+    inline glm::uvec3 getSize           (void) const { return glm::uvec3( mWidth, mHeight, mDepth ); }
 
     // ===================================================================================================== \/
     // ============================================================================================ WRAPPERS \/
@@ -179,6 +180,9 @@ public:
     //! for usage of a texture with depth data
     void setCompareFunc( GLenum _func = GL_LEQUAL );
 
+    //! color that is sampled outside range if wrap is set to GL_CLAMP_TO_BORDER
+    void setBorderColor(const glm::vec4& _color = glm::vec4(0.0));
+
     //! _sampleCount = 1.0 to deactivate anisotrop filtering, maximum is often 16. If a value is too high it will get clamped to the maximum
     void setAnisotropicFilter( GLfloat _sampleCount );
 
@@ -216,8 +220,9 @@ protected:
     GLuint bindAndGetOldTexture() const;
 
     // generic get parameter functions:
-    GLfloat getParameterF( GLenum _name ) const;
-    GLint   getParameterI( GLenum _name ) const;
+    GLint     getParameterI ( GLenum _name ) const;
+    GLfloat   getParameterF ( GLenum _name ) const;
+    glm::vec4 getParameter4F( GLenum _name ) const;
 
     //! returns a format compatible with the internal, only used to
     //! reserve memory, not to upload actual data!

src/ACGL/OpenGL/Objects/Texture.cc

@@ -111,6 +111,13 @@ void TextureBase::setCompareFunc( GLenum _func )
     glBindTexture(mTarget, prevTexture);
 }
 
+void TextureBase::setBorderColor(const glm::vec4& _color)
+{
+    GLuint prevTexture = bindAndGetOldTexture();
+    glTexParameterfv( mTarget, GL_TEXTURE_BORDER_COLOR, (GLfloat*)&_color);
+    glBindTexture(mTarget, prevTexture);
+}
+
 
 void TextureBase::setAnisotropicFilter( GLfloat _sampleCount )
 {
@@ -177,6 +184,16 @@ GLfloat TextureBase::getParameterF( GLenum _name ) const
     return param;
 }
 
+glm::vec4 TextureBase::getParameter4F( GLenum _name ) const
+{
+    GLuint prevTexture = bindAndGetOldTexture();
+    glm::vec4 param;
+    glGetTexParameterfv( mTarget, _name, (GLfloat*)&param );
+    glBindTexture(mTarget, prevTexture);
+    openGLRareError();
+    return param;
+}
+
 GLuint TextureBase::bindAndGetOldTexture() const
 {
     GLint prevTexture = 0;