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st/xorg: try to fix non-uniform transforms

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This commit is contained in:
Zack Rusin 2009-11-12 16:21:00 -05:00
parent 43080e40aa
commit 654122ba7b
1 changed files with 16 additions and 6 deletions
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22
src/gallium/state_trackers/xorg/xorg_renderer.c
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@ -148,32 +148,42 @@ add_vertex_data1(struct xorg_renderer *r,
float width, float height,
struct pipe_texture *src, float *src_matrix)
{
float s0, t0, s1, t1;
float pt0[2], pt1[2];
float s0, t0, s1, t1, s2, t2, s3, t3;
float pt0[2], pt1[2], pt2[2], pt3[2];
pt0[0] = srcX;
pt0[1] = srcY;
pt1[0] = (srcX + width);
pt1[1] = (srcY + height);
pt1[1] = srcY;
pt2[0] = (srcX + width);
pt2[1] = (srcY + height);
pt3[0] = srcX;
pt3[1] = (srcY + height);
if (src_matrix) {
map_point(src_matrix, pt0[0], pt0[1], &pt0[0], &pt0[1]);
map_point(src_matrix, pt1[0], pt1[1], &pt1[0], &pt1[1]);
map_point(src_matrix, pt2[0], pt2[1], &pt2[0], &pt2[1]);
map_point(src_matrix, pt3[0], pt3[1], &pt3[0], &pt3[1]);
}
s0 = pt0[0] / src->width[0];
s1 = pt1[0] / src->width[0];
s2 = pt2[0] / src->width[0];
s3 = pt3[0] / src->width[0];
t0 = pt0[1] / src->height[0];
t1 = pt1[1] / src->height[0];
t2 = pt2[1] / src->height[0];
t3 = pt3[1] / src->height[0];
/* 1st vertex */
add_vertex_1tex(r, dstX, dstY, s0, t0);
/* 2nd vertex */
add_vertex_1tex(r, dstX + width, dstY, s1, t0);
add_vertex_1tex(r, dstX + width, dstY, s1, t1);
/* 3rd vertex */
add_vertex_1tex(r, dstX + width, dstY + height, s1, t1);
add_vertex_1tex(r, dstX + width, dstY + height, s2, t2);
/* 4th vertex */
add_vertex_1tex(r, dstX, dstY + height, s0, t1);
add_vertex_1tex(r, dstX, dstY + height, s3, t3);
}
static struct pipe_buffer *