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fix flashing-white lod fades

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This commit is contained in:
David Rose 2008-12-19 00:04:06 +00:00
parent 99b0236c1c
commit 0798221a5b
5 changed files with 64 additions and 17 deletions
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5
panda/src/pgraph/config_pgraph.cxx
View File

@ -283,6 +283,11 @@ ConfigVariableInt lod_fade_bin_draw_order
PRC_DESC("The default bin draw order to assign the fading part of a "
"FadeLODNode transition."));
ConfigVariableInt lod_fade_state_override
("lod-fade-state-override", 1000,
PRC_DESC("The default override value to assign to the fade attribs "
"in order to effect a FadeLODNode transition."));
ConfigVariableBool verify_lods
("verify-lods", false,
PRC_DESC("When this is true, LODNodes will test when they are rendered to "

1
panda/src/pgraph/config_pgraph.h
View File

@ -58,6 +58,7 @@ extern ConfigVariableBool polylight_info;
extern ConfigVariableDouble lod_fade_time;
extern ConfigVariableString lod_fade_bin_name;
extern ConfigVariableInt lod_fade_bin_draw_order;
extern ConfigVariableInt lod_fade_state_override;
extern ConfigVariableBool verify_lods;
extern ConfigVariableBool show_vertex_animation;

13
panda/src/pgraph/fadeLodNode.I
View File

@ -57,4 +57,17 @@ get_fade_bin_draw_order() const {
return _fade_bin_draw_order;
}
////////////////////////////////////////////////////////////////////
// Function: FadeLODNode::get_fade_state_override
// Access: Published
// Description: Returns the override value that is applied to the
// state changes necessary to apply the fade effect.
// This should be larger than any attrib overrides on
// the fading geometry.
////////////////////////////////////////////////////////////////////
INLINE int FadeLODNode::
get_fade_state_override() const {
return _fade_state_override;
}

52
panda/src/pgraph/fadeLodNode.cxx
View File

@ -20,6 +20,7 @@
#include "colorScaleAttrib.h"
#include "depthWriteAttrib.h"
#include "transparencyAttrib.h"
#include "cullBinAttrib.h"
TypeHandle FadeLODNode::_type_handle;
@ -37,6 +38,7 @@ FadeLODNode(const string &name) :
_fade_time = lod_fade_time;
_fade_bin_name = lod_fade_bin_name;
_fade_bin_draw_order = lod_fade_bin_draw_order;
_fade_state_override = lod_fade_state_override;
}
////////////////////////////////////////////////////////////////////
@ -51,6 +53,7 @@ FadeLODNode(const FadeLODNode &copy) :
_fade_time = copy._fade_time;
_fade_bin_name = copy._fade_bin_name;
_fade_bin_draw_order = copy._fade_bin_draw_order;
_fade_state_override = copy._fade_state_override;
}
////////////////////////////////////////////////////////////////////
@ -278,26 +281,43 @@ set_fade_bin(const string &name, int draw_order) {
_fade_2_old_state.clear();
}
////////////////////////////////////////////////////////////////////
// Function: FadeLODNode::set_fade_state_override
// Access: Published
// Description: Specifies the override value that is applied to the
// state changes necessary to apply the fade effect.
// This should be larger than any attrib overrides on
// the fading geometry.
////////////////////////////////////////////////////////////////////
void FadeLODNode::
set_fade_state_override(int override) {
_fade_state_override = override;
_fade_1_old_state.clear();
_fade_1_new_state.clear();
_fade_2_old_state.clear();
_fade_2_new_state.clear();
}
////////////////////////////////////////////////////////////////////
// Function: FadeLODNode::get_fade_1_old_state
// Access: Protected, Static
// Access: Protected
// Description: Returns a RenderState for rendering the old element
// during first half of fade.
////////////////////////////////////////////////////////////////////
CPT(RenderState) FadeLODNode::
get_fade_1_old_state() {
static CPT(RenderState) state = (const RenderState *)NULL;
if (state == (const RenderState *)NULL) {
state = RenderState::make
(DepthOffsetAttrib::make());
if (_fade_1_old_state == (const RenderState *)NULL) {
_fade_1_old_state = RenderState::make
(DepthOffsetAttrib::make(),
_fade_state_override);
}
return state;
return _fade_1_old_state;
}
////////////////////////////////////////////////////////////////////
// Function: FadeLODNode::get_fade_1_new_state
// Access: Protected, Static
// Access: Protected
// Description: Returns a RenderState for rendering the new element
// during first half of fade.
////////////////////////////////////////////////////////////////////
@ -307,7 +327,8 @@ get_fade_1_new_state(float in_alpha) {
_fade_1_new_state = RenderState::make
(TransparencyAttrib::make(TransparencyAttrib::M_alpha),
CullBinAttrib::make(_fade_bin_name, _fade_bin_draw_order),
DepthOffsetAttrib::make());
DepthOffsetAttrib::make(),
_fade_state_override);
}
LVecBase4f alpha_scale(1.0f, 1.0f, 1.0f, in_alpha);
@ -327,7 +348,8 @@ get_fade_2_old_state(float out_alpha) {
_fade_2_old_state = RenderState::make
(TransparencyAttrib::make(TransparencyAttrib::M_alpha),
DepthWriteAttrib::make(DepthWriteAttrib::M_off),
CullBinAttrib::make(_fade_bin_name, _fade_bin_draw_order));
CullBinAttrib::make(_fade_bin_name, _fade_bin_draw_order),
_fade_state_override);
}
LVecBase4f alpha_scale(1.0f, 1.0f, 1.0f, out_alpha);
@ -337,19 +359,19 @@ get_fade_2_old_state(float out_alpha) {
////////////////////////////////////////////////////////////////////
// Function: FadeLODNode::get_fade_2_new_state
// Access: Protected, Static
// Access: Protected
// Description: Returns a RenderState for rendering the new element
// during second half of fade.
////////////////////////////////////////////////////////////////////
CPT(RenderState) FadeLODNode::
get_fade_2_new_state() {
static CPT(RenderState) state = (const RenderState *)NULL;
if (state == (const RenderState *)NULL) {
state = RenderState::make
(DepthOffsetAttrib::make());
if (_fade_2_new_state == (const RenderState *)NULL) {
_fade_2_new_state = RenderState::make
(DepthOffsetAttrib::make(),
_fade_state_override);
}
return state;
return _fade_2_new_state;
}
////////////////////////////////////////////////////////////////////

10
panda/src/pgraph/fadeLodNode.h
View File

@ -42,18 +42,24 @@ PUBLISHED:
INLINE const string &get_fade_bin_name() const;
INLINE int get_fade_bin_draw_order() const;
void set_fade_state_override(int override);
INLINE int get_fade_state_override() const;
private:
static CPT(RenderState) get_fade_1_old_state();
CPT(RenderState) get_fade_1_old_state();
CPT(RenderState) get_fade_1_new_state(float in_alpha);
CPT(RenderState) get_fade_2_old_state(float out_alpha);
static CPT(RenderState) get_fade_2_new_state();
CPT(RenderState) get_fade_2_new_state();
private:
float _fade_time;
string _fade_bin_name;
int _fade_bin_draw_order;
int _fade_state_override;
CPT(RenderState) _fade_1_new_state;
CPT(RenderState) _fade_1_old_state;
CPT(RenderState) _fade_2_new_state;
CPT(RenderState) _fade_2_old_state;
public: