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Merge change I56981989 into eclair 

* changes:
  fix [2231527] Compatibility with SpaceJunk game (OpenGL)
This commit is contained in:
Android (Google) Code Review 2009-11-03 18:04:49 -05:00
parent 3746610622 b44efdc6ba
commit 33e18e4ec7
1 changed files with 6 additions and 7 deletions
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13
opengl/libagl/matrix.cpp
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@ -741,20 +741,19 @@ void point4__generic(transform_t const* mx, vec4_t* lhs, vec4_t const* rhs) {
void point4__mvui(transform_t const* mx, vec4_t* lhs, vec4_t const* rhs) {
// this used for transforming light positions back to object space.
// Lights have 3 components positions, so w is always 1.
// however, it is used as a switch for directional lights, so we need
// w is used as a switch for directional lights, so we need
// to preserve it.
const GLfixed* const m = mx->matrix.m;
const GLfixed rx = rhs->x;
const GLfixed ry = rhs->y;
const GLfixed rz = rhs->z;
lhs->x = mla3a(rx, m[ 0], ry, m[ 4], rz, m[ 8], m[12]);
lhs->y = mla3a(rx, m[ 1], ry, m[ 5], rz, m[ 9], m[13]);
lhs->z = mla3a(rx, m[ 2], ry, m[ 6], rz, m[10], m[14]);
lhs->w = rhs->w;
const GLfixed rw = rhs->w;
lhs->x = mla4(rx, m[ 0], ry, m[ 4], rz, m[ 8], rw, m[12]);
lhs->y = mla4(rx, m[ 1], ry, m[ 5], rz, m[ 9], rw, m[13]);
lhs->z = mla4(rx, m[ 2], ry, m[ 6], rz, m[10], rw, m[14]);
lhs->w = rw;
}
void point2__nop(transform_t const*, vec4_t* lhs, vec4_t const* rhs) {
lhs->z = 0;
lhs->w = 0x10000;