jaby/jabyengine
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases 1 Wiki Activity

Support getting and setting of matrix

Browse Source
This commit is contained in:
jaby
2024-02-01 18:54:45 -05:00
parent a40a69a878
commit 725241d80b
3 changed files with 120 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

76
include/PSX/GTE/gte.hpp
View File

@@ -41,24 +41,23 @@ namespace JabyEngine {
__asm__ volatile("ctc2 $14, $4" :: "r"(&matrix) : "$12", "$13", "$14");
}
static MATRIX get_rot_matrix() {
MATRIX matrix = {0};
/*
GetRotMatrix
// TODO: v why is this needed?
// TODO: v what is this? v
// TODO: v v what exactly is this register?
__asm__ volatile("cfc2 $12, $0" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("cfc2 $13, $1" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("sw $12, 0(%0)" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("sw $13, 4(%0)" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("cfc2 $12, $2" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("cfc2 $13, $3" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("cfc2 $14, $4" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("sw $12, 8(%0)" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("sw $13, 12(%0)" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
__asm__ volatile("sw $14, 16(%0)" :: "r"(&matrix) : "$12", "$13", "$14", "memory");
return matrix;
Writes the current 3x3 constant rotation matrix to matrix
(This doesn't require us to use memory clobber)
*/
static void get_rot_matrix(MATRIX &matrix) {
__asm__ volatile("cfc2 $12, $0" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $13, $1" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $12, 0(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $13, 4(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $12, $2" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $13, $3" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $14, $4" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $12, 8(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $13, 12(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $14, 16(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
}
/*
@@ -75,6 +74,21 @@ namespace JabyEngine {
__asm__ volatile("ctc2 $14, $7" :: "r"(&matrix) : "$12", "$13", "$14");
}
/*
GetTransMatrix
Writes the current constant parallel transfer vector to matrix
(This doesn't require us to use memory clobber)
*/
static void get_trans_matrix(MATRIX& matrix) {
__asm__ volatile("cfc2 $14, $7" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $13, $6" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $14, 28(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("cfc2 $12, $5" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $13, 24(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
__asm__ volatile("sw $12, 20(%0)" :: "r"(&matrix) : "$12", "$13", "$14");
}
/*
MulMatrix0
@@ -88,6 +102,34 @@ namespace JabyEngine {
*/
MATRIX& multiply_matrix(const MATRIX& m0, const MATRIX& m1, MATRIX& result);
/*
matrix: first input
Sets the 3x3 constant rotation matrix and the parallel transfer vector from input
*/
void set_matrix(const MATRIX& matrix);
/*
returns: current matrix
Gets the current 3x3 constant rotation matrix and the parallel transfer vector
*/
MATRIX get_matrix();
/*
matrix: optional input
Pushes the current matrix (rotation and parallel) to an internal stack
Optional: replaces current matrix (rotation and parallel) with input
*/
void push_matrix();
void push_matrix(const MATRIX& matrix);
/*
Restores the previous stored matrix (rotation and parallel)
*/
void pop_matrix();
/*
SetGeomOffset(ofx,ofy)