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0025304: Visualization, TKOpenGl - support texturing within built-in GLSL programs

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This commit is contained in:
kgv
2014-11-25 08:52:08 +03:00
committed by bugmaster
parent abdf0b107e
commit 6c6aadb1ff
2 changed files with 99 additions and 8 deletions
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101
src/OpenGl/OpenGl_ShaderManager.cxx
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@@ -36,6 +36,13 @@ namespace
#define EOL "\n"
//! Definition of VertColor varying.
const char THE_VARY_VertColor[] =
EOL"varying vec4 VertColor;";
const char THE_VARY_TexCoord[] =
EOL"varying vec2 TexCoord;";
//! Auxiliary function to transform normal
const char THE_FUNC_transformNormal[] =
EOL"vec3 transformNormal (in vec3 theNormal)"
@@ -1060,11 +1067,24 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramFlat (Handle(OpenGl_Shad
EOL" gl_FragColor = aColor;";
}
}
else
{
if ((theBits & OpenGl_PO_TextureRGB) != 0)
{
aSrcVertExtraOut += THE_VARY_TexCoord;
aSrcFragExtraOut += THE_VARY_TexCoord;
aSrcVertExtraMain +=
EOL" TexCoord = occTexCoord.st;";
aSrcFragGetColor =
EOL"vec4 getColor(void) { return texture2D(occActiveSampler, TexCoord.st); }";
}
}
if ((theBits & OpenGl_PO_VertColor) != 0)
{
aSrcVertExtraOut += EOL"varying vec4 VertColor;";
aSrcVertExtraOut += THE_VARY_VertColor;
aSrcVertExtraMain += EOL" VertColor = occVertColor;";
aSrcFragExtraOut += EOL"varying vec4 VertColor;";
aSrcFragExtraOut += THE_VARY_VertColor;
aSrcFragGetColor = EOL"vec4 getColor(void) { return VertColor; }";
}
if ((theBits & OpenGl_PO_ClipPlanes) != 0)
@@ -1199,6 +1219,7 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramGouraud (Handle(OpenGl_S
{
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
TCollection_AsciiString aSrcVert, aSrcVertColor, aSrcVertExtraOut, aSrcVertExtraMain, aSrcFrag, aSrcFragExtraOut, aSrcFragExtraMain;
TCollection_AsciiString aSrcFragGetColor = EOL"vec4 getColor(void) { return gl_FrontFacing ? FrontColor : BackColor; }";
if ((theBits & OpenGl_PO_Point) != 0)
{
#if defined(GL_ES_VERSION_2_0)
@@ -1209,6 +1230,35 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramGouraud (Handle(OpenGl_S
{
aSrcVertColor = EOL"vec4 getVertColor(void) { return occVertColor; }";
}
if ((theBits & OpenGl_PO_Point) != 0)
{
if ((theBits & OpenGl_PO_TextureRGB) != 0)
{
aSrcFragGetColor =
EOL"vec4 getColor(void)"
EOL"{"
EOL" vec4 aColor = gl_FrontFacing ? FrontColor : BackColor;"
EOL" return texture2D(occActiveSampler, gl_PointCoord) * aColor;"
EOL"}";
}
}
else
{
if ((theBits & OpenGl_PO_TextureRGB) != 0)
{
aSrcVertExtraOut += THE_VARY_TexCoord;
aSrcFragExtraOut += THE_VARY_TexCoord;
aSrcVertExtraMain +=
EOL" TexCoord = occTexCoord.st;";
aSrcFragGetColor =
EOL"vec4 getColor(void)"
EOL"{"
EOL" vec4 aColor = gl_FrontFacing ? FrontColor : BackColor;"
EOL" return texture2D(occActiveSampler, TexCoord.st) * aColor;"
EOL"}";
}
}
if ((theBits & OpenGl_PO_ClipPlanes) != 0)
{
const char THE_POS_VARY[] =
@@ -1250,10 +1300,11 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramGouraud (Handle(OpenGl_S
+ EOL"varying vec4 FrontColor;"
EOL"varying vec4 BackColor;"
+ aSrcFragExtraOut
+ aSrcFragGetColor
+ EOL"void main()"
EOL"{"
+ aSrcFragExtraMain
+ EOL" gl_FragColor = gl_FrontFacing ? FrontColor : BackColor;"
+ EOL" gl_FragColor = getColor();"
EOL"}";
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));
@@ -1274,8 +1325,11 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramGouraud (Handle(OpenGl_S
Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_ShaderProgram)& theProgram,
const Standard_Integer theBits)
{
#define thePhongCompLight "computeLighting (normalize (Normal), normalize (View), Position, gl_FrontFacing)"
Handle(Graphic3d_ShaderProgram) aProgramSrc = new Graphic3d_ShaderProgram();
TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain, aSrcFrag, aSrcFragGetColor, aSrcFragExtraMain;
TCollection_AsciiString aSrcVert, aSrcVertExtraOut, aSrcVertExtraMain, aSrcFrag, aSrcFragExtraOut, aSrcFragGetVertColor, aSrcFragExtraMain;
TCollection_AsciiString aSrcFragGetColor = EOL"vec4 getColor(void) { return " thePhongCompLight "; }";
if ((theBits & OpenGl_PO_Point) != 0)
{
#if defined(GL_ES_VERSION_2_0)
@@ -1284,11 +1338,42 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_Sha
}
if ((theBits & OpenGl_PO_VertColor) != 0)
{
aSrcVertExtraOut += EOL"varying vec4 VertColor;";
aSrcVertExtraOut += THE_VARY_VertColor;
aSrcVertExtraMain += EOL" VertColor = occVertColor;";
aSrcFragGetColor = EOL"varying vec4 VertColor;"
EOL"vec4 getVertColor(void) { return VertColor; }";
}
if ((theBits & OpenGl_PO_Point) != 0)
{
if ((theBits & OpenGl_PO_TextureRGB) != 0)
{
aSrcFragGetColor =
EOL"vec4 getColor(void)"
EOL"{"
EOL" vec4 aColor = " thePhongCompLight ";"
EOL" return texture2D(occActiveSampler, gl_PointCoord) * aColor;"
EOL"}";
}
}
else
{
if ((theBits & OpenGl_PO_TextureRGB) != 0)
{
aSrcVertExtraOut += THE_VARY_TexCoord;
aSrcFragExtraOut += THE_VARY_TexCoord;
aSrcVertExtraMain +=
EOL" TexCoord = occTexCoord.st;";
aSrcFragGetColor =
EOL"vec4 getColor(void)"
EOL"{"
EOL" vec4 aColor = " thePhongCompLight ";"
EOL" return texture2D(occActiveSampler, TexCoord.st) * aColor;"
EOL"}";
}
}
if ((theBits & OpenGl_PO_ClipPlanes) != 0)
{
aSrcFragExtraMain += THE_FRAG_CLIP_PLANES;
@@ -1320,13 +1405,15 @@ Standard_Boolean OpenGl_ShaderManager::prepareStdProgramPhong (Handle(OpenGl_Sha
EOL"varying vec3 Normal;"
EOL"varying vec3 View;"
+ EOL
+ aSrcFragGetColor
+ aSrcFragExtraOut
+ aSrcFragGetVertColor
+ aLights
+ aSrcFragGetColor
+ EOL
EOL"void main()"
EOL"{"
+ aSrcFragExtraMain
+ EOL" gl_FragColor = computeLighting (normalize (Normal), normalize (View), Position, gl_FrontFacing);"
+ EOL" gl_FragColor = getColor();"
EOL"}";
aProgramSrc->AttachShader (Graphic3d_ShaderObject::CreateFromSource (Graphic3d_TOS_VERTEX, aSrcVert));