glm: fix pointer indexing warnings (#6215)

vlib/glm/glm.v

@@ -64,7 +64,7 @@ pub fn (m Mat4) str() string {
 			s += '  '
 		}
 		for j in 0..4 {
-			val := m.data[i * 4 + j]
+			val := unsafe {m.data[i * 4 + j]}
 			s += '${val:5.2f} '
 		}
 		if i != 3 {
@@ -141,6 +141,7 @@ pub fn translate(m Mat4, v Vec3) Mat4 {
 	x := v.x
 	y := v.y
 	z := v.z
+	unsafe {
 		a00 := a[0] a01 := a[1] a02 := a[2]  a03 := a[3]
 		a10 := a[4] a11 := a[5] a12 := a[6]  a13 := a[7]
 		a20 := a[8] a21 := a[9] a22 := a[10] a23 := a[11]
@@ -151,6 +152,7 @@ pub fn translate(m Mat4, v Vec3) Mat4 {
 		out[13] = a01 * x + a11 * y + a21 * z + a[13]
 		out[14] = a02 * x + a12 * y + a22 * z + a[14]
 		out[15] = a03 * x + a13 * y + a23 * z + a[15]
+	}
 	return mat4(out)
 }
 
@@ -166,12 +168,14 @@ pub fn ortho(left, right, bottom, top f32) Mat4 {
 	// mat<4, 4, T, defaultp> Result(static_cast<T>(1));
 	n := 16
 	mut res := f32_calloc(n)
+	unsafe {
 		res[0] = 2.0 / (right - left)
 		res[5] = 2.0 / (top - bottom)
 		res[10] = 1.0
 		res[12] = - (right + left) / (right - left)
 		res[13] = - (top + bottom) / (top - bottom)
 		res[15] = 1.0
+	}
 	return mat4(res)
 }
 
@@ -181,6 +185,7 @@ pub fn ortho_zo(left, right, bottom, top, zNear, zFar f32) Mat4 {
 	// mat<4, 4, T, defaultp> Result(static_cast<T>(1));
 	n := 16
 	mut res := f32_calloc(n)
+	unsafe {
 		res[0] = 2.0 / (right - left)
 		res[5] = 2.0 / (top - bottom)
 		res[10] = 1.0
@@ -188,6 +193,7 @@ pub fn ortho_zo(left, right, bottom, top, zNear, zFar f32) Mat4 {
 		res[13] = - (top + bottom) / (top - bottom)
 		res[14] = - zNear / (zFar - zNear)
 		res[15] = 1.0
+	}
 	return mat4(res)
 }
 
@@ -198,6 +204,7 @@ pub fn scale(m Mat4, v Vec3) Mat4 {
 	x := v.x
 	y := v.y
 	z := v.z
+	unsafe {
 		out[0] = a[0] * v.x
 		out[1] = a[1] * x
 		out[2] = a[2] * x
@@ -214,6 +221,7 @@ pub fn scale(m Mat4, v Vec3) Mat4 {
 		out[13] = a[13]
 		out[14] = a[14]
 		out[15] = a[15]
+	}
 	return mat4(out)
 }
 
@@ -224,11 +232,13 @@ pub fn mult(a, b Mat4) Mat4 {
 		for r in 0..4 {
 			mut prod := f32(0)
 			for c in 0..4 {
-				prod += a.data[c*4+r] * b.data[i*4+c]
+				prod += unsafe {a.data[c*4+r] * b.data[i*4+c]}
 			}
+			unsafe {
 				out[i*4+r] = prod
 			}
 		}
+	}
 	return mat4(out)
 }
 
@@ -257,7 +267,7 @@ pub fn rotate(angle f32, axis Vec3, src Mat4) Mat4 {
 	f22 := axis.z  *axis.z * oneminusc + c
 
 	data := src.data
-
+	unsafe {
 		t00 := data[0] * f00 + data[4] * f01 + data[8] * f02
 		t01 := data[1] * f00 + data[5] * f01 + data[9] * f02
 		t02 := data[2] * f00 + data[6] * f01 + data[10] * f02
@@ -279,6 +289,7 @@ pub fn rotate(angle f32, axis Vec3, src Mat4) Mat4 {
 		dest[4] = t10	dest[5] = t11	dest[6] = t12	dest[7] = t13
 
 		return mat4(dest)
+	}
 }
 
 // fn rotate_z(a *f32, rad f32) *f32 {
@@ -287,6 +298,7 @@ pub fn rotate_z(m Mat4, rad f32) Mat4 {
 	mut out := f32_calloc(16)
 	s := f32(math.sin(rad))
 	c := f32(math.cos(rad))
+	unsafe {
 		a00 := a[0]
 		a01 := a[1]
 		a02 := a[2]
@@ -312,6 +324,7 @@ pub fn rotate_z(m Mat4, rad f32) Mat4 {
 		out[5] = a11 * c - a01 * s
 		out[6] = a12 * c - a02 * s
 		out[7] = a13 * c - a03 * s
+	}
 	return mat4(out)
 }
 
@@ -322,10 +335,12 @@ pub fn identity() Mat4 {
 	// 0 0 0 1
 	n := 16
 	mut res := f32_calloc(int(sizeof(f32)) * n)
+	unsafe {
 		res[0] = 1
 		res[5] = 1
 		res[10] = 1
 		res[15] = 1
+	}
 	return mat4(res)
 }
 
@@ -357,8 +372,8 @@ fn ortho_js(left, right, bottom, top f32) &f32 {
 	lr := 1.0 / (left - right)
 	bt := 1.0 / (bottom - top)
 	nf := f32(1.0) / 1.0// (mynear -myfar)
-	mut out := &f32(0)
-	unsafe { out = &f32( malloc (int(sizeof(f32) * 16))) }
+	unsafe {
+		mut out := &f32( malloc (int(sizeof(f32) * 16)))
 		out[0] = -2.0 * lr
 		out[1] = 0
 		out[2] = 0
@@ -376,6 +391,7 @@ fn ortho_js(left, right, bottom, top f32) &f32 {
 		out[14] = 1.0 * nf//(far + near) * nf;
 		out[15] = 1
 		return out
+	}
 	//f := 0.0
 	//return &f
 }