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0029517: Visualization - introduce AlphaMode property defining alpha value handling options

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kgv
2018-02-20 16:32:52 +03:00
committed by bugmaster
parent ff6d145402
commit c40eb6b950
29 changed files with 371 additions and 63 deletions
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1
src/Shaders/Declarations.glsl
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@@ -168,6 +168,7 @@ uniform float occPointSize; //!< point size
//! Parameters of blended order-independent transparency rendering algorithm
uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)
uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment
uniform float occAlphaCutoff; //!< alpha test cutoff value
//! Parameters of clipping planes
#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)

12
src/Shaders/DeclarationsImpl.glsl
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@@ -16,18 +16,20 @@
// This file includes implementation of common functions and properties accessors
#if defined(FRAGMENT_SHADER)
#if defined(OCC_WRITE_WEIGHT_OIT_COVERAGE)
//! Output color and coverage for accumulation by OIT algorithm.
//! Output color (and coverage for accumulation by OIT algorithm).
void occSetFragColor (in vec4 theColor)
{
#if defined(OCC_ALPHA_TEST)
if (theColor.a < occAlphaCutoff) discard;
#endif
#if defined(OCC_WRITE_WEIGHT_OIT_COVERAGE)
float aWeight = theColor.a * clamp (1e+2 * pow (1.0 - gl_FragCoord.z * occOitDepthFactor, 3.0), 1e-2, 1e+2);
occFragCoverage.r = theColor.a * aWeight;
occFragColor = vec4 (theColor.rgb * theColor.a * aWeight, theColor.a);
}
#else
//! Output color.
void occSetFragColor (in vec4 theColor) { occFragColor = theColor; }
occFragColor = theColor;
#endif
}
#endif
#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)

12
src/Shaders/Shaders_DeclarationsImpl_glsl.pxx
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@@ -19,18 +19,20 @@ static const char Shaders_DeclarationsImpl_glsl[] =
"// This file includes implementation of common functions and properties accessors\n"
"\n"
"#if defined(FRAGMENT_SHADER)\n"
"#if defined(OCC_WRITE_WEIGHT_OIT_COVERAGE)\n"
"//! Output color and coverage for accumulation by OIT algorithm.\n"
"//! Output color (and coverage for accumulation by OIT algorithm).\n"
"void occSetFragColor (in vec4 theColor)\n"
"{\n"
"#if defined(OCC_ALPHA_TEST)\n"
" if (theColor.a < occAlphaCutoff) discard;\n"
"#endif\n"
"#if defined(OCC_WRITE_WEIGHT_OIT_COVERAGE)\n"
" float aWeight = theColor.a * clamp (1e+2 * pow (1.0 - gl_FragCoord.z * occOitDepthFactor, 3.0), 1e-2, 1e+2);\n"
" occFragCoverage.r = theColor.a * aWeight;\n"
" occFragColor = vec4 (theColor.rgb * theColor.a * aWeight, theColor.a);\n"
"}\n"
"#else\n"
"//! Output color.\n"
"void occSetFragColor (in vec4 theColor) { occFragColor = theColor; }\n"
" occFragColor = theColor;\n"
"#endif\n"
"}\n"
"#endif\n"
"\n"
"#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"

1
src/Shaders/Shaders_Declarations_glsl.pxx
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@@ -171,6 +171,7 @@ static const char Shaders_Declarations_glsl[] =
"//! Parameters of blended order-independent transparency rendering algorithm\n"
"uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)\n"
"uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment\n"
"uniform float occAlphaCutoff; //!< alpha test cutoff value\n"
"\n"
"//! Parameters of clipping planes\n"
"#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)\n"