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Fix portal backface culling

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This commit is contained in:
James Lambert 2022-06-06 13:04:37 -06:00
parent e98a6d8b68
commit 56b278a47f
3 changed files with 14 additions and 14 deletions
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6
README.md
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@ -57,9 +57,11 @@ where `/home/james/Blender/blender-2.93.1-linux-x64` is the folder where blender
## Current TODO list
Portal culling
Doorway collision
Implement collider bitmask
Cylinder touching bug
Blank screen on game start
Radio
Create radio model
Create radio texture
Implement 3D sound
cube dispenser

13
src/main.c
View file

@ -123,10 +123,13 @@ static void gameProc(void* arg) {
OS_VI_DIVOT_OFF |
OS_VI_DITHER_FILTER_OFF);
osViBlack(1);
u32 pendingGFX = 0;
u32 drawBufferIndex = 0;
u8 frameControl = 0;
u8 inputIgnore = 6;
u8 inputIgnore = 5;
u8 drawingEnabled = 0;
u16* memoryEnd = graphicsLayoutScreenBuffers((u16*)PHYS_TO_K0(osMemSize));
@ -162,22 +165,18 @@ static void gameProc(void* arg) {
break;
}
static int renderSkip = 1;
if (pendingGFX < 2 && !renderSkip) {
if (pendingGFX < 2 && drawingEnabled) {
graphicsCreateTask(&gGraphicsTasks[drawBufferIndex], (GraphicsCallback)sceneRender, &gScene);
drawBufferIndex = drawBufferIndex ^ 1;
++pendingGFX;
} else if (renderSkip) {
--renderSkip;
}
controllersTriggerRead();
if (inputIgnore) {
--inputIgnore;
} else {
sceneUpdate(&gScene);
drawingEnabled = 1;
}
timeUpdateDelta();
soundPlayerUpdate();

9
src/scene/portal.c
View file

@ -121,7 +121,7 @@ void renderPropsNext(struct RenderProps* current, struct RenderProps* next, stru
next->aspectRatio = current->aspectRatio;
transformConcat(&portalCombined, &current->camera.transform, &next->camera.transform);
float zBias = (STARTING_RENDER_DEPTH - current->currentDepth - 1) * (-0.01f / STARTING_RENDER_DEPTH);
float zBias = (STARTING_RENDER_DEPTH - current->currentDepth - 1) * -0.005f;
// render any objects halfway through portals
cameraSetupMatrices(&next->camera, renderState, next->aspectRatio, &next->perspectiveCorrect, current->viewport, NULL, 0.0f);
@ -177,12 +177,11 @@ void portalRender(struct Portal* portal, struct Portal* otherPortal, struct Rend
struct Vector3 worldForward;
quatMultVector(&portal->transform.rotation, &forward, &worldForward);
struct Quaternion inverseCamera;
quatConjugate(&props->camera.transform.rotation, &inverseCamera);
quatMultVector(&inverseCamera, &worldForward, &forward);
struct Vector3 offsetFromCamera;
vector3Sub(&props->camera.transform.position, &portal->transform.position, &offsetFromCamera);
// don't render the portal if it is facing the wrong way
if (forward.z < 0.0f) {
if (vector3Dot(&worldForward, &offsetFromCamera) < 0.0f) {
return;
}