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Trying to run first GTE code

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jaby
2024-01-24 17:29:42 -05:00
parent 1922515228
commit 2c4fb231f2
4 changed files with 103 additions and 12 deletions
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56
include/PSX/GTE/gte.hpp
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@@ -4,7 +4,59 @@
namespace JabyEngine {
namespace GTE {
/*
gte_SetGeomOffset(ofx,ofy)
RotTrans
Jaby: Can we use gte_stsv instead of gte_stlvnl for writing to a SVECTOR?
Do we have to use gte_stflg??
Look at: RotTransSV???
Perform coordinate transformation using a rotation matrix
input: Input vector
output: Output vector
flag: flag output
*/
static void rot_trans(const SVECTOR& input, VECTOR& output, int32_t& flag) {
ldv0(input);
rt();
stlvnl(output);
stflg(flag);
}
/*
SetRotMatrix
Sets a 3x3 matrix m as a constant rotation matrix.
matrix: The rotation matrix to set
*/
static void set_rot_matrix(const MATRIX& matrix) {
__asm__ volatile("lw $12, 0(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $13, 4(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $12, $0" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $13, $1" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $12, 8(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $13, 12(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $14, 16(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $12, $2" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $13, $3" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $14, $4" :: "r"(&matrix) : "$12", "$13", "$14");
}
/*
SetTransMatrix
Sets a constant parallel transfer vector specified by m
*/
static void set_trans_matrix(const MATRIX& matrix) {
__asm__ volatile("lw $12, 20(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $13, 24(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $12, $5" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("lw $14, 28(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $13, $6" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("ctc2 $14, $7" :: "r"(&matrix) : "$12", "$13", "$14");
}
/*
SetGeomOffset(ofx,ofy)
Load GTE-offset.
*/
@@ -16,7 +68,7 @@ namespace JabyEngine {
}
/*
gte_SetGeomScreen(h)
SetGeomScreen(h)
Load distance from viewpoint to screen.
*/