extract shaders from source code

Conflicts:
	vcl/opengl/gdiimpl.cxx

Change-Id: Ifbb55e58e0854cc491703b8ca8d8e582741a9bd9

12 files changed, 182 insertions, 150 deletions

diff --git a/vcl/Module_vcl.mk b/vcl/Module_vcl.mk
index 693c625e8269..f61cc7b59ba0 100644
--- a/vcl/Module_vcl.mk
+++ b/vcl/Module_vcl.mk
@@ -22,6 +22,7 @@ $(eval $(call gb_Module_Module,vcl))
 $(eval $(call gb_Module_add_targets,vcl,\
     CustomTarget_afm_hash \
     Library_vcl \
+	Package_opengl \
     $(if $(filter DESKTOP,$(BUILD_TYPE)), \
         StaticLibrary_vclmain \
         Executable_ui-previewer \
diff --git a/vcl/Package_opengl.mk b/vcl/Package_opengl.mk
new file mode 100644
index 000000000000..9b8f745ded66
--- /dev/null
+++ b/vcl/Package_opengl.mk
@@ -0,0 +1,23 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#
+# 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/.
+#
+
+$(eval $(call gb_Package_Package,vcl_opengl_shader,$(SRCDIR)/vcl/opengl))
+
+$(eval $(call gb_Package_add_files,vcl_opengl_shader,$(LIBO_ETC_FOLDER)/opengl,\
+	maskFragmentShader.glsl \
+	maskVertexShader.glsl \
+	maskedTextureFragmentShader.glsl \
+	maskedTextureVertexShader.glsl \
+	solidFragmentShader.glsl \
+	solidVertexShader.glsl \
+	textureFragmentShader.glsl \
+	textureVertexShader.glsl \
+))
+
+# vim: set noet sw=4 ts=4:
diff --git a/vcl/inc/openglgdiimpl.hxx b/vcl/inc/openglgdiimpl.hxx
index d3ee9ef3e8fe..d6f35fd38fd7 100644
--- a/vcl/inc/openglgdiimpl.hxx
+++ b/vcl/inc/openglgdiimpl.hxx
@@ -50,8 +50,6 @@ private:
     GLuint mnMaskUniform;
     GLuint mnMaskColorUniform;
 
-    GLuint CompileShader( GLenum nType, const char *aSrc );
-    GLuint CreateProgram( const char *aVertShaderSrc, const char *aFragShaderSrc );
     bool CreateSolidProgram( void );
     bool CreateTextureProgram( void );
     bool CreateMaskedTextureProgram( void );
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx
index f59584aab56c..ef49d0355f15 100644
--- a/vcl/opengl/gdiimpl.cxx
+++ b/vcl/opengl/gdiimpl.cxx
@@ -23,6 +23,8 @@
 #include <basegfx/polygon/b2dpolygontools.hxx>
 #include <basegfx/polygon/b2dpolygontriangulator.hxx>
 
+#include <vcl/opengl/OpenGLHelper.hxx>
+
 #define GL_ATTRIB_POS 0
 #define GL_ATTRIB_TEX 1
 
@@ -136,99 +138,9 @@ void OpenGLSalGraphicsImpl::SetROPFillColor( SalROPColor /*nROPColor*/ )
 {
 }
 
-GLuint OpenGLSalGraphicsImpl::CompileShader( GLenum nType, const char *aSrc )
-{
-    GLint nStatus;
-    GLuint nShader;
-    GLint nLogLen( 0 );
-    char *aLog( NULL );
-
-    nShader = glCreateShader( nType );
-    glShaderSource( nShader, 1, (const GLchar **) &aSrc, NULL );
-    glCompileShader( nShader );
-    glGetShaderiv( nShader, GL_COMPILE_STATUS, &nStatus );
-    if( nStatus )
-        return nShader;
-
-    glGetShaderiv( nShader, GL_INFO_LOG_LENGTH, &nLogLen );
-    if( nLogLen > 1 )
-        aLog = new char[nLogLen];
-    if( aLog )
-        glGetShaderInfoLog( nShader, nLogLen, NULL, aLog );
-
-    SAL_WARN( "vcl.opengl", "::CompileShader failed: " << aLog );
-
-    delete aLog;
-    glDeleteShader( nShader );
-
-    return 0;
-}
-
-GLuint OpenGLSalGraphicsImpl::CreateProgram( const char *aVertShaderSrc, const char *aFragShaderSrc )
-{
-    GLuint nProgram;
-    GLuint nVertShader, nFragShader;
-    GLint nStatus;
-
-    nVertShader = CompileShader( GL_VERTEX_SHADER, aVertShaderSrc );
-    nFragShader = CompileShader( GL_FRAGMENT_SHADER, aFragShaderSrc );
-    if( !nVertShader || !nFragShader )
-    {
-        SAL_WARN( "vcl.opengl", "::CreateProgram couldn't compile the shaders" );
-        return 0;
-    }
-
-    nProgram = glCreateProgram();
-    if( nProgram == 0 )
-    {
-        SAL_WARN( "vcl.opengl", "::CreateProgram couldn't create GL program" );
-        return 0;
-    }
-
-    glAttachShader( nProgram, nVertShader );
-    glAttachShader( nProgram, nFragShader );
-    glLinkProgram( nProgram );
-    glGetProgramiv( nProgram, GL_LINK_STATUS, &nStatus );
-    if( !nStatus )
-    {
-        GLint nLogLen( 0 );
-        char *aLog( NULL );
-
-        glDeleteShader( nVertShader );
-        glDeleteShader( nFragShader );
-
-        glGetProgramiv( nProgram, GL_INFO_LOG_LENGTH, &nLogLen );
-        if( nLogLen > 0 )
-            aLog = new char[nLogLen];
-        if( aLog )
-            glGetProgramInfoLog( nProgram, nLogLen, NULL, aLog );
-
-        SAL_WARN( "vcl.opengl", "::CreateSolidShader couldn't link program: " << aLog );
-        delete aLog;
-
-        return 0;
-    }
-
-    maShaders.push_back( nVertShader );
-    maShaders.push_back( nFragShader );
-    return nProgram;
-}
-
 bool OpenGLSalGraphicsImpl::CreateSolidProgram( void )
 {
-    static const char aVertShaderSrc[] =
-        "attribute vec4 position;\n"
-        "void main() {\n"
-        "   gl_Position = position;\n"
-        "}\n";
-    static const char aFragShaderSrc[] =
-        "precision mediump float;\n"
-        "uniform vec4 color;\n"
-        "void main() {\n"
-        "   gl_FragColor = color;\n"
-        "}\n";
-
-    mnSolidProgram = CreateProgram( aVertShaderSrc, aFragShaderSrc );
+    mnSolidProgram = OpenGLHelper::LoadShaders( "solidVertexShader", "solidFragmentShader" );
     if( mnSolidProgram == 0 )
         return false;
 
@@ -239,23 +151,9 @@ bool OpenGLSalGraphicsImpl::CreateSolidProgram( void )
 
 bool OpenGLSalGraphicsImpl::CreateTextureProgram( void )
 {
-    static const char aVertShaderSrc[] =
-        "attribute vec4 position;\n"
-        "attribute vec2 tex_coord_in;\n"
-        "varying vec2 tex_coord;\n"
-        "void main() {\n"
-        "   gl_Position = position;\n"
-        "   tex_coord = tex_coord_in;\n"
-        "}\n";
     static const char aFragShaderSrc[] =
-        "precision mediump float;\n"
-        "varying vec2 tex_coord;\n"
-        "uniform sampler2D sampler;\n"
-        "void main() {\n"
-        "   gl_FragColor = texture2D(sampler, tex_coord);\n"
-        "}\n";
-
-    mnTextureProgram = CreateProgram( aVertShaderSrc, aFragShaderSrc );
+
+    mnTextureProgram = OpenGLHelper::( "textureVertexShader", "textureFragmentShader" );
     if( mnTextureProgram == 0 )
         return false;
 
@@ -267,27 +165,7 @@ bool OpenGLSalGraphicsImpl::CreateTextureProgram( void )
 
 bool OpenGLSalGraphicsImpl::CreateMaskedTextureProgram( void )
 {
-    static const char aVertShaderSrc[] =
-        "attribute vec4 position;\n"
-        "attribute vec2 tex_coord_in;\n"
-        "varying vec2 tex_coord;\n"
-        "void main() {\n"
-        "   gl_Position = position;\n"
-        "   tex_coord = tex_coord_in;\n"
-        "}\n";
-    static const char aFragShaderSrc[] =
-        "precision mediump float;\n"
-        "varying vec2 tex_coord;\n"
-        "uniform sampler2D sampler;\n"
-        "uniform sampler2D mask;\n"
-        "void main() {\n"
-        "   vec4 texel0, texel1;\n"
-        "   texel0 = texture2D(sampler, tex_coord);\n"
-        "   texel1 = texture2D(mask, tex_coord);\n"
-        "   gl_FragColor = texel0 * texel1.a;\n"
-        "}\n";
-
-    mnMaskedTextureProgram = CreateProgram( aVertShaderSrc, aFragShaderSrc );
+    mnMaskedTextureProgram = OpenGLHelper::LoadShaders( "maskedTextureVertexShader", "maskedTextureFragmentShader" );
     if( mnMaskedTextureProgram == 0 )
         return false;
 
@@ -300,26 +178,7 @@ bool OpenGLSalGraphicsImpl::CreateMaskedTextureProgram( void )
 
 bool OpenGLSalGraphicsImpl::CreateMaskProgram( void )
 {
-    static const char aVertShaderSrc[] =
-        "attribute vec4 position;\n"
-        "attribute vec2 tex_coord_in;\n"
-        "varying vec2 tex_coord;\n"
-        "void main() {\n"
-        "   gl_Position = position;\n"
-        "   tex_coord = tex_coord_in;\n"
-        "}\n";
-    static const char aFragShaderSrc[] =
-        "precision mediump float;\n"
-        "varying vec2 tex_coord;\n"
-        "uniform sampler2D sampler;\n"
-        "uniform vec4 color;\n"
-        "void main() {\n"
-        "   vec4 texel0;\n"
-        "   texel0 = texture2D(sampler, tex_coord);\n"
-        "   gl_FragColor = color * texel0.a;\n"
-        "}\n";
-
-    mnMaskedTextureProgram = CreateProgram( aVertShaderSrc, aFragShaderSrc );
+    mnMaskedTextureProgram = OpenGLHelper::LoadShaders( "maskVertexShader", "maskFragmentShader" );
     if( mnMaskedTextureProgram == 0 )
         return false;
 
diff --git a/vcl/opengl/maskFragmentShader.glsl b/vcl/opengl/maskFragmentShader.glsl
new file mode 100644
index 000000000000..35ecbd0c8df3
--- /dev/null
+++ b/vcl/opengl/maskFragmentShader.glsl
@@ -0,0 +1,21 @@
+/* -*- 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/.
+ */
+
+precision mediump float;
+varying vec2 tex_coord;
+uniform sampler2D sampler;
+uniform vec4 color;"
+
+void main() {
+   vec4 texel0;
+   texel0 = texture2D(sampler, tex_coord);
+   gl_FragColor = color * texel0.a;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/maskVertexShader.glsl b/vcl/opengl/maskVertexShader.glsl
new file mode 100644
index 000000000000..303ddececed2
--- /dev/null
+++ b/vcl/opengl/maskVertexShader.glsl
@@ -0,0 +1,19 @@
+/* -*- 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/.
+ */
+
+attribute vec4 position;
+attribute vec2 tex_coord_in;
+varying vec2 tex_coord;
+
+void main() {
+   gl_Position = position;
+   tex_coord = tex_coord_in;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/maskedTextureFragmentShader.glsl b/vcl/opengl/maskedTextureFragmentShader.glsl
new file mode 100644
index 000000000000..5353250aa3c5
--- /dev/null
+++ b/vcl/opengl/maskedTextureFragmentShader.glsl
@@ -0,0 +1,22 @@
+/* -*- 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/.
+ */
+
+precision mediump float;
+varying vec2 tex_coord;
+uniform sampler2D sampler;
+uniform sampler2D mask;
+
+void main() {
+   vec4 texel0, texel1;
+   texel0 = texture2D(sampler, tex_coord);
+   texel1 = texture2D(mask, tex_coord);
+   gl_FragColor = texel0 * texel1.a;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/maskedTextureVertexShader.glsl b/vcl/opengl/maskedTextureVertexShader.glsl
new file mode 100644
index 000000000000..303ddececed2
--- /dev/null
+++ b/vcl/opengl/maskedTextureVertexShader.glsl
@@ -0,0 +1,19 @@
+/* -*- 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/.
+ */
+
+attribute vec4 position;
+attribute vec2 tex_coord_in;
+varying vec2 tex_coord;
+
+void main() {
+   gl_Position = position;
+   tex_coord = tex_coord_in;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/solidFragmentShader.glsl b/vcl/opengl/solidFragmentShader.glsl
new file mode 100644
index 000000000000..917cafce7a37
--- /dev/null
+++ b/vcl/opengl/solidFragmentShader.glsl
@@ -0,0 +1,17 @@
+/* -*- 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/.
+ */
+
+precision mediump float;
+
+uniform vec4 color;
+void main() {
+   gl_FragColor = color;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/solidVertexShader.glsl b/vcl/opengl/solidVertexShader.glsl
new file mode 100644
index 000000000000..c3de9c57f349
--- /dev/null
+++ b/vcl/opengl/solidVertexShader.glsl
@@ -0,0 +1,16 @@
+/* -*- 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/.
+ */
+
+attribute vec4 position;
+void main() {
+   gl_Position = position;
+};
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/textureFragmentShader.glsl b/vcl/opengl/textureFragmentShader.glsl
new file mode 100644
index 000000000000..eb510d80eb09
--- /dev/null
+++ b/vcl/opengl/textureFragmentShader.glsl
@@ -0,0 +1,18 @@
+/* -*- 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/.
+ */
+
+precision mediump float;
+varying vec2 tex_coord;
+uniform sampler2D sampler;
+
+void main() {
+   gl_FragColor = texture2D(sampler, tex_coord);
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/vcl/opengl/textureVertexShader.glsl b/vcl/opengl/textureVertexShader.glsl
new file mode 100644
index 000000000000..303ddececed2
--- /dev/null
+++ b/vcl/opengl/textureVertexShader.glsl
@@ -0,0 +1,19 @@
+/* -*- 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/.
+ */
+
+attribute vec4 position;
+attribute vec2 tex_coord_in;
+varying vec2 tex_coord;
+
+void main() {
+   gl_Position = position;
+   tex_coord = tex_coord_in;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */