1 files changed, 122 insertions, 0 deletions
diff --git a/vcl/inc/opengl/program.hxx b/vcl/inc/opengl/program.hxx
new file mode 100644
index 000000000..bff248d9b
--- /dev/null
+++ b/vcl/inc/opengl/program.hxx
@@ -0,0 +1,122 @@
+/* -*- 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/.
+ */
+
+#ifndef INCLUDED_VCL_INC_OPENGL_PROGRAM_H
+#define INCLUDED_VCL_INC_OPENGL_PROGRAM_H
+
+#include <sal/config.h>
+
+#include <vector>
+
+#include <vcl/dllapi.h>
+
+#include <basegfx/point/b2dpoint.hxx>
+#include <rtl/ustring.hxx>
+#include <opengl/texture.hxx>
+
+#include <unordered_map>
+
+class Color;
+
+enum class TextureShaderType
+{
+    Normal = 0,
+    Blend,
+    Masked,
+    Diff,
+    MaskedColor
+};
+
+enum class DrawShaderType
+{
+    Normal = 0,
+    Line
+};
+
+class OpenGLProgram
+{
+private:
+    GLuint          mnId;
+    std::unordered_map< OString, GLuint >
+                    maUniformLocations;
+    sal_uInt32      mnEnabledAttribs;
+    GLuint          mnPositionAttrib;
+    GLuint          mnTexCoordAttrib;
+    GLuint          mnAlphaCoordAttrib;
+    GLuint          mnMaskCoordAttrib;
+    GLuint          mnExtrusionVectorsAttrib;
+    GLuint          mnVertexColorsAttrib;
+
+    std::vector< OpenGLTexture >     maTextures;
+    bool            mbBlending;
+
+    float mfLastWidth;
+    float mfLastHeight;
+    float mfLastPixelOffset;
+
+
+    OpenGLProgram(const OpenGLProgram &) = delete;
+public:
+    OpenGLProgram();
+    ~OpenGLProgram();
+
+    GLuint Id() { return mnId; }
+
+    bool Load( const OUString& rVertexShader, const OUString& rFragmentShader,
+               const OString& preamble, const OString& rDigest );
+    void Use();
+    void Reuse();
+    void Clean();
+
+    void SetVertices( const GLvoid* pData );
+    void SetTextureCoord( const GLvoid* pData );
+    void SetAlphaCoord( const GLvoid* pData );
+    void SetMaskCoord(const GLvoid* pData);
+    void SetExtrusionVectors(const GLvoid* pData);
+    void SetVertexColors(std::vector<GLubyte>& rColorVector);
+
+    void SetUniform1f( const OString& rName, GLfloat v1 );
+    void SetUniform2f( const OString& rName, GLfloat v1, GLfloat v2 );
+    void SetUniform1fv( const OString& rName, GLsizei nCount, GLfloat const * aValues );
+    void SetUniform2fv( const OString& rName, GLsizei nCount, GLfloat const * aValues );
+    void SetUniform1i( const OString& rName, GLint v1 );
+    void SetColor( const OString& rName, const Color& rColor );
+    void SetColor( const OString& rName, Color nColor, sal_uInt8 nTransparency );
+    void SetColorf( const OString& rName, Color nColor, double fTransparency );
+    void SetColorWithIntensity( const OString& rName, const Color& rColor, long nFactor );
+    void SetTexture( const OString& rName, OpenGLTexture& rTexture );
+    void SetTransform( const OString& rName, const OpenGLTexture& rTexture,
+                       const basegfx::B2DPoint& rNull, const basegfx::B2DPoint& rX,
+                       const basegfx::B2DPoint& rY );
+    void SetIdentityTransform(const OString& rName);
+    void SetShaderType(TextureShaderType eTextureShaderType);
+    void SetShaderType(DrawShaderType eDrawShaderType);
+
+    void SetBlendMode( GLenum nSFactor, GLenum nDFactor );
+
+    void ApplyMatrix(float fWidth, float fHeight, float fPixelOffset = 0.0f);
+
+    void DrawTexture( const OpenGLTexture& rTexture );
+
+    void DrawArrays(GLenum aMode, std::vector<GLfloat>& aVertices);
+    void DrawElements(GLenum aMode, GLuint nNumberOfVertices);
+
+    bool EnableVertexAttrib(GLuint& rAttrib, const OString& rName);
+
+    void SetVertexAttrib(GLuint& rAttrib, const OString& rName, GLint nSize,
+                         GLenum eType, GLboolean bNormalized, GLsizei aStride,
+                         const GLvoid* pPointer);
+
+private:
+    GLuint GetUniformLocation( const OString& rName );
+};
+
+#endif // INCLUDED_VCL_INC_OPENGL_PROGRAM_H
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */