Implement GL_GENERATE_MIPMAP.

src/OpenGL/libGLES_CM/Texture.cpp

@@ -35,6 +35,7 @@ Texture::Texture(GLuint name) : egl::Texture(name)
     mWrapS = GL_REPEAT;
     mWrapT = GL_REPEAT;
 	mMaxAnisotropy = 1.0f;
+	generateMipmap = GL_FALSE;
 	cropRectU = 0;
 	cropRectV = 0;
 	cropRectW = 0;
@@ -148,6 +149,11 @@ bool Texture::setMaxAnisotropy(float textureMaxAnisotropy)
     return true;
 }
 
+void Texture::setGenerateMipmap(GLboolean enable)
+{
+	generateMipmap = enable;
+}
+
 void Texture::setCropRect(GLint u, GLint v, GLint w, GLint h)
 {
 	cropRectU = u;
@@ -181,6 +187,11 @@ GLfloat Texture::getMaxAnisotropy() const
     return mMaxAnisotropy;
 }
 
+GLboolean Texture::getGenerateMipmap() const
+{
+	return generateMipmap;
+}
+
 GLint Texture::getCropRectU() const
 {
 	return cropRectU;
@@ -694,6 +705,12 @@ void Texture2D::generateMipmaps()
 
 egl::Image *Texture2D::getImage(unsigned int level)
 {
+	if(generateMipmap && image[0]->hasDirtyMipmaps())
+	{
+		generateMipmaps();
+		image[0]->cleanMipmaps();
+	}
+
 	return image[level];
 }
 

src/OpenGL/libGLES_CM/Texture.h

@@ -64,6 +64,7 @@ public:
     bool setWrapS(GLenum wrap);
     bool setWrapT(GLenum wrap);
 	bool setMaxAnisotropy(GLfloat textureMaxAnisotropy);
+	void setGenerateMipmap(GLboolean enable);
 	void setCropRect(GLint u, GLint v, GLint w, GLint h);
 
     GLenum getMinFilter() const;
@@ -71,6 +72,7 @@ public:
     GLenum getWrapS() const;
     GLenum getWrapT() const;
 	GLfloat getMaxAnisotropy() const;
+	GLboolean getGenerateMipmap() const;
 	GLint getCropRectU() const;
     GLint getCropRectV() const;
     GLint getCropRectW() const;
@@ -110,6 +112,7 @@ protected:
     GLenum mWrapS;
     GLenum mWrapT;
 	GLfloat mMaxAnisotropy;
+	GLboolean generateMipmap;
 	GLint cropRectU;
 	GLint cropRectV;
 	GLint cropRectW;

src/OpenGL/libGLES_CM/libGLES_CM.cpp

@@ -2263,6 +2263,9 @@ void GetTexParameterfv(GLenum target, GLenum pname, GLfloat* params)
 		case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 			*params = texture->getMaxAnisotropy();
 			break;
+		case GL_GENERATE_MIPMAP:
+			*params = (GLfloat)texture->getGenerateMipmap();
+			break;
 		case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
 			*params = (GLfloat)1;
 			break;
@@ -2311,6 +2314,9 @@ void GetTexParameteriv(GLenum target, GLenum pname, GLint* params)
 		case GL_TEXTURE_MAX_ANISOTROPY_EXT:
 			*params = (GLint)texture->getMaxAnisotropy();
 			break;
+		case GL_GENERATE_MIPMAP:
+			*params = (GLint)texture->getGenerateMipmap();
+			break;
 		case GL_REQUIRED_TEXTURE_IMAGE_UNITS_OES:
 			*params = 1;
 			break;
@@ -3376,6 +3382,9 @@ void TexParameterf(GLenum target, GLenum pname, GLfloat param)
 				return error(GL_INVALID_VALUE);
 			}
 			break;
+		case GL_GENERATE_MIPMAP:
+			texture->setGenerateMipmap((GLboolean)param);
+			break;
 		default:
 			return error(GL_INVALID_ENUM);
 		}
@@ -3441,6 +3450,9 @@ void TexParameteri(GLenum target, GLenum pname, GLint param)
 				return error(GL_INVALID_VALUE);
 			}
 			break;
+		case GL_GENERATE_MIPMAP:
+			texture->setGenerateMipmap((GLboolean)param);
+			break;
 		default:
 			return error(GL_INVALID_ENUM);
 		}