ABelliqueux/nolibgs_hello_worlds
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Fix bug : ALWAYS init your vetors to 0!

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ABelliqueux 2021-07-06 15:51:26 +02:00
parent 78b38a19f1
commit 6eb1760552
1 changed files with 6 additions and 7 deletions
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13
hello_gte_opti.c
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@ -1,5 +1,4 @@
// Hello free cycles ! // Hello free cycles !
// Let's win some CPU cycles back
// //
// Ref : /psyq/DOCS/Devrefs/Inlinref.pdf, p.18 // Ref : /psyq/DOCS/Devrefs/Inlinref.pdf, p.18
// /psyq/psx/sample/scea/GTE // /psyq/psx/sample/scea/GTE
@ -87,7 +86,7 @@ void display(void)
// Wait for drawing // Wait for drawing
DrawSync(0); DrawSync(0);
// Wait for vsync // Wait for vsync
VSync(0); VSync(1);
// Flip DISP and DRAW env // Flip DISP and DRAW env
PutDispEnv(&disp[db]); PutDispEnv(&disp[db]);
PutDrawEnv(&draw[db]); PutDrawEnv(&draw[db]);
@ -102,7 +101,8 @@ void display(void)
int main(void) int main(void)
{ {
long p, flag, OTz; long p, flag, OTz;
SVECTOR rotVector, rotVector4 = {0}; // Initialize rotation vector {x, y, z} SVECTOR rotVector = {0};
SVECTOR rotVector4 = {0}; // Initialize rotation vector {x, y, z} - ALWAYS !
VECTOR transVector = {0, 0, CENTERX, 0}; // Initialize translation vector {x, y, z} VECTOR transVector = {0, 0, CENTERX, 0}; // Initialize translation vector {x, y, z}
SVECTOR vertPos[4] = { SVECTOR vertPos[4] = {
{ 0, -32, 0, 0 }, // Vert 1 { 0, -32, 0, 0 }, // Vert 1
@ -135,8 +135,7 @@ int main(void)
// Draw on the left part of the screen // Draw on the left part of the screen
transVector.vx = -CENTERX/2; transVector.vx = -CENTERX/2;
// Increment rotation angle on Y axis // Increment rotation angle on Y axis
rotVector.vy += 8; rotVector.vy += 1;
//~ rotVector.vx -= 4 ;
// Find rotation matrix from vector, store in // Find rotation matrix from vector, store in
RotMatrix_gte(&rotVector, &workMatrix); RotMatrix_gte(&rotVector, &workMatrix);
// Ditto for translation // Ditto for translation
@ -177,8 +176,8 @@ int main(void)
// Set matrices - Move to right of screen // Set matrices - Move to right of screen
transVector.vx = CENTERX/2; transVector.vx = CENTERX/2;
// Increment rot on X/Y axis // Increment rot on X/Y axis
rotVector4.vy -= 8 ; rotVector4.vy -= 1 ;
rotVector4.vx -= 4 ; rotVector4.vx -= 1 ;
// Set matrices // Set matrices
RotMatrix_gte(&rotVector4, &workMatrix); RotMatrix_gte(&rotVector4, &workMatrix);
TransMatrix(&workMatrix, &transVector); TransMatrix(&workMatrix, &transVector);