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0028487: Visualization, TKOpenGl - add option for rendering with lower resolution

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Graphic3d_RenderingParams::RenderResolutionScale - added new option
defining scale factor for allocating off-screen rendering buffers
relative to native resolution of window buffer.

Scale factor can be below 1.0 (lower resolution) or higher (as analog of super sampling),
but can not be combined with MSAA settings.

Draw Harness command vrenderparams has been extended with option -rendScale
managing introduced option Graphic3d_RenderingParams::RenderResolutionScale.

vcaps has been extended with option -useWindowBuffer for managing
OpenGl_Caps::useSystemBuffer option.

vrepaint has been extended with option -immediate
for testing immediate layer redraw

OpenGl_View::blitBuffers() - eliminate compiler warning on Android
This commit is contained in:
kgv
2017-02-23 20:50:42 +03:00
committed by bugmaster
parent 05aa616d6d
commit 56689b2700
9 changed files with 281 additions and 75 deletions
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11
src/Graphic3d/Graphic3d_RenderingParams.hxx
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@@ -48,6 +48,7 @@ public:
Graphic3d_RenderingParams()
: Method (Graphic3d_RM_RASTERIZATION),
NbMsaaSamples (0),
RenderResolutionScale (1.0f),
// ray tracing parameters
IsGlobalIlluminationEnabled (Standard_False),
RaytracingDepth (THE_DEFAULT_DEPTH),
@@ -91,6 +92,8 @@ public:
Graphic3d_RenderingMode Method; //!< specifies rendering mode, Graphic3d_RM_RASTERIZATION by default
Standard_Integer NbMsaaSamples; //!< number of MSAA samples (should be within 0..GL_MAX_SAMPLES, power-of-two number), 0 by default
Standard_ShortReal RenderResolutionScale; //!< rendering resolution scale factor, 1 by default;
//! incompatible with MSAA (e.g. NbMsaaSamples should be set to 0)
Standard_Boolean IsGlobalIlluminationEnabled; //!< enables/disables global illumination effects (path tracing)
Standard_Integer SamplesPerPixel; //!< number of samples per pixel (SPP)
@@ -115,10 +118,10 @@ public:
Standard_Boolean ToReverseStereo; //!< flag to reverse stereo pair, FALSE by default
unsigned int Resolution; //!< Pixels density (PPI), defines scaling factor for parameters like text size
//!< (when defined in screen-space units rather than in 3D) to be properly displayed
//!< on device (screen / printer). 72 is default value.
//!< Note that using difference resolution in different Views in same Viewer
//!< will lead to performance regression (for example, text will be recreated every time).
//! (when defined in screen-space units rather than in 3D) to be properly displayed
//! on device (screen / printer). 72 is default value.
//! Note that using difference resolution in different Views in same Viewer
//! will lead to performance regression (for example, text will be recreated every time).
};