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Slight optimisation

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This commit is contained in:
Luke Benstead 2021-04-25 13:33:24 +01:00
parent 40678836e0
commit 1b6f543fab
1 changed files with 8 additions and 9 deletions
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17
GL/draw.c
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@ -1090,19 +1090,17 @@ GL_FORCE_INLINE void divide(SubmissionTarget* target) {
/* Perform perspective divide on each vertex */
Vertex* vertex = _glSubmissionTargetStart(target);
const float h = GetVideoMode()->height;
ITERATE(target->count) {
float f = MATH_Fast_Invert(vertex->w);
const float f = MATH_Fast_Invert(vertex->w);
/* Convert to NDC */
vertex->xyz[0] *= f;
vertex->xyz[1] *= f;
/* Apply viewport */
/* Convert to NDC and apply viewport */
vertex->xyz[0] = MATH_fmac(
VIEWPORT.hwidth, vertex->xyz[0], VIEWPORT.x_plus_hwidth
VIEWPORT.hwidth, vertex->xyz[0] * f, VIEWPORT.x_plus_hwidth
);
vertex->xyz[1] = GetVideoMode()->height - MATH_fmac(
VIEWPORT.hheight, vertex->xyz[1], VIEWPORT.y_plus_hheight
vertex->xyz[1] = h - MATH_fmac(
VIEWPORT.hheight, vertex->xyz[1] * f, VIEWPORT.y_plus_hheight
);
/* Apply depth range */
@ -1110,6 +1108,7 @@ GL_FORCE_INLINE void divide(SubmissionTarget* target) {
1.0f - MATH_fmac(vertex->xyz[2] * f, 0.5f, 0.5f),
PVR_MIN_Z
);
++vertex;
}
}