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Fix runtime errors

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This commit is contained in:
Miloslav Číž 2019-06-22 18:27:09 +02:00
parent 8271f50df0
commit 365e1eb326
2 changed files with 12 additions and 4 deletions
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9
programs/level.c
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@ -87,9 +87,9 @@ void drawTeleport(int16_t x, int16_t y, S3L_ScreenCoord size)
int16_t halfSize = size / 2; int16_t halfSize = size / 2;
S3L_ScreenCoord x0 = S3L_max(0,x - halfSize); S3L_ScreenCoord x0 = S3L_max(0,x - halfSize);
S3L_ScreenCoord x1 = S3L_min(S3L_RESOLUTION_X - 1,x + halfSize); S3L_ScreenCoord x1 = S3L_min(S3L_RESOLUTION_X,x + halfSize);
S3L_ScreenCoord y0 = S3L_max(0,y - halfSize); S3L_ScreenCoord y0 = S3L_max(0,y - halfSize);
S3L_ScreenCoord y1 = S3L_min(S3L_RESOLUTION_Y - 1,y + halfSize); S3L_ScreenCoord y1 = S3L_min(S3L_RESOLUTION_Y,y + halfSize);
for (S3L_ScreenCoord j = y0; j < y1; ++j) for (S3L_ScreenCoord j = y0; j < y1; ++j)
for (S3L_ScreenCoord i = x0; i < x1; ++i) for (S3L_ScreenCoord i = x0; i < x1; ++i)
@ -162,7 +162,10 @@ void draw()
project3DPointToScreen(teleportPoint,scene.camera,&screenPoint); project3DPointToScreen(teleportPoint,scene.camera,&screenPoint);
if (screenPoint.z < S3L_zBufferRead(screenPoint.x,screenPoint.y)) if (screenPoint.w > 0 &&
screenPoint.x >= 0 && screenPoint.x <= S3L_RESOLUTION_X &&
screenPoint.y >= 0 && screenPoint.y <= S3L_RESOLUTION_Y &&
screenPoint.z < S3L_zBufferRead(screenPoint.x,screenPoint.y))
drawTeleport(screenPoint.x,screenPoint.y,screenPoint.w); drawTeleport(screenPoint.x,screenPoint.y,screenPoint.w);
clock_t nowT = clock(); clock_t nowT = clock();

7
small3dlib.h
View file

@ -612,7 +612,12 @@ void S3L_newFrame();
void S3L_zBufferClear(); void S3L_zBufferClear();
void S3L_stencilBufferClear(); void S3L_stencilBufferClear();
/** Writes a value (not necessarily depth! depends on the format of z-buffer)
to z-buffer (if enabled). Does NOT check boundaries! */
void S3L_zBufferWrite(S3L_ScreenCoord x, S3L_ScreenCoord y, S3L_Unit value); void S3L_zBufferWrite(S3L_ScreenCoord x, S3L_ScreenCoord y, S3L_Unit value);
/** Reads a value (not necessarily depth! depends on the format of z-buffer)
from z-buffer (if enabled). Does NOT check boundaries! */
S3L_Unit S3L_zBufferRead(S3L_ScreenCoord x, S3L_ScreenCoord y); S3L_Unit S3L_zBufferRead(S3L_ScreenCoord x, S3L_ScreenCoord y);
static inline void S3L_rotate2DPoint(S3L_Unit *x, S3L_Unit *y, S3L_Unit angle); static inline void S3L_rotate2DPoint(S3L_Unit *x, S3L_Unit *y, S3L_Unit angle);
@ -1465,7 +1470,7 @@ void project3DPointToScreen(
result->z = point.z; result->z = point.z;
result->w = result->w =
(point.z < 0) ? 0 : (point.z <= 0) ? 0 :
( (
(s * camera.focalLength * S3L_RESOLUTION_X) / (s * camera.focalLength * S3L_RESOLUTION_X) /
(point.z * S3L_FRACTIONS_PER_UNIT) (point.z * S3L_FRACTIONS_PER_UNIT)