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0025328: Visualization, TKOpenGl - support text rendering within built-in GLSL programs

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This commit is contained in:
dbp
2015-01-20 12:56:54 +03:00
committed by bugmaster
parent bcf50875e3
commit b990e5579a
2 changed files with 31 additions and 35 deletions
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31
src/OpenGl/OpenGl_ShaderManager.cxx
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@@ -998,21 +998,24 @@ void OpenGl_ShaderManager::PushState (const Handle(OpenGl_ShaderProgram)& thePro
Standard_Boolean OpenGl_ShaderManager::prepareStdProgramFont()
{
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
TCollection_AsciiString aSrcVert =
EOL"void main()"
EOL"{"
EOL" gl_Position = occProjectionMatrix * occWorldViewMatrix * occModelWorldMatrix * occVertex;"
EOL"}";
TCollection_AsciiString aSrcVert = TCollection_AsciiString()
+ THE_VARY_TexCoord
+ EOL"void main()"
EOL"{"
EOL" TexCoord = occTexCoord.st;"
EOL" gl_Position = occProjectionMatrix * occWorldViewMatrix * occModelWorldMatrix * occVertex;"
EOL"}";
TCollection_AsciiString aSrcFrag =
EOL"float getAlpha(void) { return texture2D(occActiveSampler, gl_PointCoord).a; }"
EOL"void main()"
EOL"{"
EOL" vec4 aColor = occColor;"
EOL" aColor.a *= getAlpha();"
EOL" if (aColor.a <= 0.285) discard;"
EOL" gl_FragColor = aColor;"
EOL"}";
TCollection_AsciiString aSrcFrag = TCollection_AsciiString() +
+ THE_VARY_TexCoord
+ EOL"float getAlpha(void) { return texture2D(occActiveSampler, TexCoord.st).a; }"
EOL"void main()"
EOL"{"
EOL" vec4 aColor = occColor;"
EOL" aColor.a *= getAlpha();"
EOL" if (aColor.a <= 0.285) discard;"
EOL" gl_FragColor = aColor;"
EOL"}";
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_FRAGMENT, aSrcFrag));