diff options
Diffstat (limited to 'vcl/opengl/gdiimpl.cxx')
| -rw-r--r-- | vcl/opengl/gdiimpl.cxx | 107 |
1 files changed, 105 insertions, 2 deletions
diff --git a/vcl/opengl/gdiimpl.cxx b/vcl/opengl/gdiimpl.cxx index 8bd1b35e8875..5883e7c8a0a7 100644 --- a/vcl/opengl/gdiimpl.cxx +++ b/vcl/opengl/gdiimpl.cxx @@ -37,8 +37,9 @@ #include <glm/gtc/type_ptr.hpp> #include <vector> -#define GL_ATTRIB_POS 0 -#define GL_ATTRIB_TEX 1 +#define GL_ATTRIB_POS 0 +#define GL_ATTRIB_TEX 1 +#define GL_ATTRIB_TEX2 2 #define glUniformColor(nUniform, nColor, nTransparency) \ glUniform4f( nUniform, \ @@ -86,6 +87,10 @@ OpenGLSalGraphicsImpl::OpenGLSalGraphicsImpl() , mnMaskedTextureProgram(0) , mnMaskedSamplerUniform(0) , mnMaskSamplerUniform(0) + , mnBlendedTextureProgram(0) + , mnBlendedTextureUniform(0) + , mnBlendedMaskUniform(0) + , mnBlendedAlphaUniform(0) , mnMaskProgram(0) , mnMaskUniform(0) , mnMaskColorUniform(0) @@ -399,6 +404,23 @@ bool OpenGLSalGraphicsImpl::CreateTransformedMaskedTextureProgram( void ) return true; } +bool OpenGLSalGraphicsImpl::CreateBlendedTextureProgram( void ) +{ + mnBlendedTextureProgram = OpenGLHelper::LoadShaders( "blendedTextureVertexShader", "blendedTextureFragmentShader" ); + if( mnBlendedTextureProgram == 0 ) + return false; + + glBindAttribLocation( mnBlendedTextureProgram, GL_ATTRIB_POS, "position" ); + glBindAttribLocation( mnBlendedTextureProgram, GL_ATTRIB_TEX, "tex_coord_in" ); + glBindAttribLocation( mnBlendedTextureProgram, GL_ATTRIB_TEX2, "alpha_coord_in" ); + mnBlendedTextureUniform = glGetUniformLocation( mnBlendedTextureProgram, "sampler" ); + mnBlendedMaskUniform = glGetUniformLocation( mnBlendedTextureProgram, "mask" ); + mnBlendedAlphaUniform = glGetUniformLocation( mnBlendedTextureProgram, "alpha" ); + + CHECK_GL_ERROR(); + return true; +} + bool OpenGLSalGraphicsImpl::CreateMaskProgram( void ) { mnMaskProgram = OpenGLHelper::LoadShaders( "maskVertexShader", "maskFragmentShader" ); @@ -846,6 +868,50 @@ void OpenGLSalGraphicsImpl::DrawTextureWithMask( OpenGLTexture& rTexture, OpenGL CHECK_GL_ERROR(); } +void OpenGLSalGraphicsImpl::DrawBlendedTexture( OpenGLTexture& rTexture, OpenGLTexture& rMask, OpenGLTexture& rAlpha, const SalTwoRect& rPosAry ) +{ + GLfloat aTexCoord[8]; + + if( mnBlendedTextureProgram == 0 ) + { + if( !CreateBlendedTextureProgram() ) + return; + } + + glUseProgram( mnBlendedTextureProgram ); + glUniform1i( mnBlendedTextureUniform, 0 ); + glUniform1i( mnBlendedMaskUniform, 1 ); + glUniform1i( mnBlendedAlphaUniform, 2 ); + glActiveTexture( GL_TEXTURE0 ); + rTexture.Bind(); + glActiveTexture( GL_TEXTURE1 ); + rMask.Bind(); + glActiveTexture( GL_TEXTURE2 ); + rAlpha.Bind(); + + rAlpha.GetCoord( aTexCoord, rPosAry ); + glEnableVertexAttribArray( GL_ATTRIB_TEX2 ); + glVertexAttribPointer( GL_ATTRIB_TEX2, 2, GL_FLOAT, GL_FALSE, 0, aTexCoord ); + + glEnable( GL_BLEND ); + glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); + DrawTextureRect( rTexture, rPosAry ); + glDisable( GL_BLEND ); + + glDisableVertexAttribArray( GL_ATTRIB_TEX2 ); + + glActiveTexture( GL_TEXTURE0 ); + rTexture.Unbind(); + glActiveTexture( GL_TEXTURE1 ); + rMask.Unbind(); + glActiveTexture( GL_TEXTURE2 ); + rAlpha.Unbind(); + glActiveTexture( GL_TEXTURE0 ); + glUseProgram( 0 ); + + CHECK_GL_ERROR(); +} + void OpenGLSalGraphicsImpl::DrawMask( OpenGLTexture& rMask, SalColor nMaskColor, const SalTwoRect& pPosAry ) { if( mnMaskProgram == 0 ) @@ -1475,6 +1541,43 @@ bool OpenGLSalGraphicsImpl::drawEPS( return false; } +bool OpenGLSalGraphicsImpl::blendBitmap( + const SalTwoRect& rPosAry, + const SalBitmap& rSalBitmap ) +{ + const OpenGLSalBitmap& rBitmap = static_cast<const OpenGLSalBitmap&>(rSalBitmap); + OpenGLTexture& rTexture( rBitmap.GetTexture() ); + + SAL_INFO( "vcl.opengl", "::blendBitmap" ); + PreDraw(); + glEnable( GL_BLEND ); + glBlendFunc( GL_ZERO, GL_SRC_COLOR ); + DrawTexture( rTexture, rPosAry ); + glDisable( GL_BLEND ); + PostDraw(); + return true; +} + +bool OpenGLSalGraphicsImpl::blendAlphaBitmap( + const SalTwoRect& rPosAry, + const SalBitmap& rSalSrcBitmap, + const SalBitmap& rSalMaskBitmap, + const SalBitmap& rSalAlphaBitmap ) +{ + const OpenGLSalBitmap& rSrcBitmap = static_cast<const OpenGLSalBitmap&>(rSalSrcBitmap); + const OpenGLSalBitmap& rMaskBitmap = static_cast<const OpenGLSalBitmap&>(rSalMaskBitmap); + const OpenGLSalBitmap& rAlphaBitmap = static_cast<const OpenGLSalBitmap&>(rSalAlphaBitmap); + OpenGLTexture& rTexture( rSrcBitmap.GetTexture() ); + OpenGLTexture& rMask( rMaskBitmap.GetTexture() ); + OpenGLTexture& rAlpha( rAlphaBitmap.GetTexture() ); + + SAL_INFO( "vcl.opengl", "::blendAlphaBitmap" ); + PreDraw(); + DrawBlendedTexture( rTexture, rMask, rAlpha, rPosAry ); + PostDraw(); + return true; +} + /** Render bitmap with alpha channel @param rSourceBitmap |