Panda3D
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A Light Ramp is any unary operator that takes a rendered pixel as input, and adjusts the brightness of that pixel. More...
#include <pandadoc.hpp>
Public Types | |
enum | LightRampMode { LRT_default = 0 , LRT_identity = 1 , LRT_single_threshold = 2 , LRT_double_threshold = 3 , LRT_hdr0 = 4 , LRT_hdr1 = 5 , LRT_hdr2 = 6 } |
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enum | PandaCompareFunc { M_none = 0 , M_never = 1 , M_less = 2 , M_equal = 3 , M_less_equal = 4 , M_greater = 5 , M_not_equal = 6 , M_greater_equal = 7 , M_always = 8 } |
enum | TexGenMode { M_off = 0 , M_eye_sphere_map = 1 , M_world_cube_map = 2 , M_eye_cube_map = 3 , M_world_normal = 4 , M_eye_normal = 5 , M_world_position = 6 , M_unused = 7 , M_eye_position = 8 , M_point_sprite = 9 , M_unused2 = 10 , M_constant = 11 } |
Public Member Functions | |
float | getLevel (int n) |
Returns the nth lighting level. More... | |
LightRampAttrib::LightRampMode | getMode () |
Returns the LightRampAttrib mode. More... | |
float | getThreshold (int n) |
Returns the nth threshold level. More... | |
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int | compareTo (const RenderAttrib other) |
Provides an arbitrary ordering among all unique RenderAttribs, so we can store the essentially different ones in a big set and throw away the rest. More... | |
const RenderAttrib | compose (const RenderAttrib other) |
Returns a new RenderAttrib object that represents the composition of this attrib with the other attrib. More... | |
int | getHash () |
Returns a suitable hash value for phash_map. More... | |
int | getSlot () |
const RenderAttrib | getUnique () |
Returns the pointer to the unique RenderAttrib in the cache that is equivalent to this one. More... | |
const RenderAttrib | invertCompose (const RenderAttrib other) |
Returns a new RenderAttrib object that represents the composition of the inverse of this attrib with the other attrib. More... | |
bool | lowerAttribCanOverride () |
Intended to be overridden by derived RenderAttrib types to specify how two consecutive RenderAttrib objects of the same type interact. More... | |
output (Ostream out) | |
write (Ostream out, int indent_level) | |
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object | __reduce__ () |
object | __reduce_persist__ (object pickler) |
VectorUchar | encodeToBamStream () |
Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More... | |
bool | encodeToBamStream (VectorUchar data, BamWriter writer) |
Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More... | |
fillin (DatagramIterator scan, BamReader manager) | |
This internal function is intended to be called by each class's make_from_bam() method to read in all of the relevant data from the BamFile for the new object. More... | |
UpdateSeq | getBamModified () |
Returns the current bam_modified counter. More... | |
markBamModified () | |
Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More... | |
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TypeHandle | getType () |
int | getTypeIndex () |
Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More... | |
bool | isExactType (TypeHandle handle) |
Returns true if the current object is the indicated type exactly. More... | |
bool | isOfType (TypeHandle handle) |
Returns true if the current object is or derives from the indicated type. More... | |
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int | getRefCount () |
Returns the current reference count. More... | |
ref () | |
Explicitly increments the reference count. More... | |
bool | testRefCountIntegrity () |
Does some easy checks to make sure that the reference count isn't completely bogus. More... | |
bool | testRefCountNonzero () |
Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More... | |
bool | unref () |
Explicitly decrements the reference count. More... | |
Static Public Member Functions | |
static int | getClassSlot () |
static TypeHandle | getClassType () |
static const RenderAttrib | makeDefault () |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeDoubleThreshold (float thresh0, float lev0, float thresh1, float lev1) |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeHdr0 () |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeHdr1 () |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeHdr2 () |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeIdentity () |
Constructs a new LightRampAttrib object. More... | |
static const RenderAttrib | makeSingleThreshold (float thresh0, float lev0) |
Constructs a new LightRampAttrib object. More... | |
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static int | garbageCollect () |
Performs a garbage-collection cycle. More... | |
static TypeHandle | getClassType () |
static int | getNumAttribs () |
Returns the total number of unique RenderAttrib objects allocated in the world. More... | |
static | listAttribs (Ostream out) |
Lists all of the RenderAttribs in the cache to the output stream, one per line. More... | |
static bool | validateAttribs () |
Ensures that the cache is still stored in sorted order. More... | |
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static TypedWritableReferenceCount | decodeFromBamStream (VectorUchar data, BamReader reader) |
Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. More... | |
static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
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static TypeHandle | getClassType () |
Public Attributes | |
int | class_slot |
LightRampAttrib::LightRampMode | mode |
Returns the LightRampAttrib mode. More... | |
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int | slot |
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TypeHandle | type |
Returns the TypeHandle representing this object's type. More... | |
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int | ref_count |
The current reference count. More... | |
A Light Ramp is any unary operator that takes a rendered pixel as input, and adjusts the brightness of that pixel.
For example, gamma correction is a kind of light ramp. So is HDR tone mapping. So is cartoon shading. See the constructors for an explanation of each kind of ramp.
enum LightRampMode |
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float getLevel | ( | int | n | ) |
Returns the nth lighting level.
LightRampAttrib::LightRampMode getMode | ( | ) |
Returns the LightRampAttrib mode.
float getThreshold | ( | int | n | ) |
Returns the nth threshold level.
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Constructs a new LightRampAttrib object.
This is the standard OpenGL lighting ramp, which clamps the final light total to the 0-1 range.
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Constructs a new LightRampAttrib object.
This causes the luminance of the diffuse lighting contribution to be quantized using two thresholds:
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Constructs a new LightRampAttrib object.
This causes an HDR tone mapping operation to be applied.
Normally, brightness values greater than 1 cannot be distinguished from each other, causing very brightly lit objects to wash out white and all detail to be erased. HDR tone mapping remaps brightness values in the range 0-infinity into the range (0,1), making it possible to distinguish detail in scenes whose brightness exceeds 1.
However, the monitor has finite contrast. Normally, all of that contrast is used to represent brightnesses in the range 0-1. The HDR0 tone mapping operator 'steals' one quarter of that contrast to represent brightnesses in the range 1-infinity.
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Constructs a new LightRampAttrib object.
This causes an HDR tone mapping operation to be applied.
Normally, brightness values greater than 1 cannot be distinguished from each other, causing very brightly lit objects to wash out white and all detail to be erased. HDR tone mapping remaps brightness values in the range 0-infinity into the range (0,1), making it possible to distinguish detail in scenes whose brightness exceeds 1.
However, the monitor has finite contrast. Normally, all of that contrast is used to represent brightnesses in the range 0-1. The HDR1 tone mapping operator 'steals' one third of that contrast to represent brightnesses in the range 1-infinity.
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static |
Constructs a new LightRampAttrib object.
This causes an HDR tone mapping operation to be applied.
Normally, brightness values greater than 1 cannot be distinguished from each other, causing very brightly lit objects to wash out white and all detail to be erased. HDR tone mapping remaps brightness values in the range 0-infinity into the range (0,1), making it possible to distinguish detail in scenes whose brightness exceeds 1.
However, the monitor has finite contrast. Normally, all of that contrast is used to represent brightnesses in the range 0-1. The HDR2 tone mapping operator 'steals' one half of that contrast to represent brightnesses in the range 1-infinity.
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Constructs a new LightRampAttrib object.
This differs from the usual OpenGL lighting model in that it does not clamp the final lighting total to (0,1).
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static |
Constructs a new LightRampAttrib object.
This causes the luminance of the diffuse lighting contribution to be quantized using a single threshold:
int class_slot |
Returns the LightRampAttrib mode.