diff options
Diffstat (limited to 'src/mesa/drivers/dri/i915-tex/intel_rotate.c')
| -rw-r--r-- | src/mesa/drivers/dri/i915-tex/intel_rotate.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/src/mesa/drivers/dri/i915-tex/intel_rotate.c b/src/mesa/drivers/dri/i915-tex/intel_rotate.c deleted file mode 100644 index a77640ee54d..00000000000 --- a/src/mesa/drivers/dri/i915-tex/intel_rotate.c +++ /dev/null @@ -1,221 +0,0 @@ - -/** - * Routines for simple 2D->2D transformations for rotated, flipped screens. - * - * XXX This code is not intel-specific. Move it into a common/utility - * someday. - */ - -#include "intel_rotate.h" - -#define MIN2(A, B) ( ((A) < (B)) ? (A) : (B) ) - -#define ABS(A) ( ((A) < 0) ? -(A) : (A) ) - - -void -matrix23Set(struct matrix23 *m, - int m00, int m01, int m02, - int m10, int m11, int m12) -{ - m->m00 = m00; m->m01 = m01; m->m02 = m02; - m->m10 = m10; m->m11 = m11; m->m12 = m12; -} - - -/* - * Transform (x,y) coordinate by the given matrix. - */ -void -matrix23TransformCoordf(const struct matrix23 *m, float *x, float *y) -{ - const float x0 = *x; - const float y0 = *y; - - *x = m->m00 * x0 + m->m01 * y0 + m->m02; - *y = m->m10 * x0 + m->m11 * y0 + m->m12; -} - - -void -matrix23TransformCoordi(const struct matrix23 *m, int *x, int *y) -{ - const int x0 = *x; - const int y0 = *y; - - *x = m->m00 * x0 + m->m01 * y0 + m->m02; - *y = m->m10 * x0 + m->m11 * y0 + m->m12; -} - - -/* - * Transform a width and height by the given matrix. - * XXX this could be optimized quite a bit. - */ -void -matrix23TransformDistance(const struct matrix23 *m, int *xDist, int *yDist) -{ - int x0 = 0, y0 = 0; - int x1 = *xDist, y1 = 0; - int x2 = 0, y2 = *yDist; - matrix23TransformCoordi(m, &x0, &y0); - matrix23TransformCoordi(m, &x1, &y1); - matrix23TransformCoordi(m, &x2, &y2); - - *xDist = (x1 - x0) + (x2 - x0); - *yDist = (y1 - y0) + (y2 - y0); - - if (*xDist < 0) - *xDist = -*xDist; - if (*yDist < 0) - *yDist = -*yDist; -} - - -/** - * Transform the rect defined by (x, y, w, h) by m. - */ -void -matrix23TransformRect(const struct matrix23 *m, int *x, int *y, int *w, int *h) -{ - int x0 = *x, y0 = *y; - int x1 = *x + *w, y1 = *y; - int x2 = *x + *w, y2 = *y + *h; - int x3 = *x, y3 = *y + *h; - matrix23TransformCoordi(m, &x0, &y0); - matrix23TransformCoordi(m, &x1, &y1); - matrix23TransformCoordi(m, &x2, &y2); - matrix23TransformCoordi(m, &x3, &y3); - *w = ABS(x1 - x0) + ABS(x2 - x1); - /**w = ABS(*w);*/ - *h = ABS(y1 - y0) + ABS(y2 - y1); - /**h = ABS(*h);*/ - *x = MIN2(x0, x1); - *x = MIN2(*x, x2); - *y = MIN2(y0, y1); - *y = MIN2(*y, y2); -} - - -/* - * Make rotation matrix for width X height screen. - */ -void -matrix23Rotate(struct matrix23 *m, int width, int height, int angle) -{ - switch (angle) { - case 0: - matrix23Set(m, 1, 0, 0, 0, 1, 0); - break; - case 90: - matrix23Set(m, 0, 1, 0, -1, 0, width); - break; - case 180: - matrix23Set(m, -1, 0, width, 0, -1, height); - break; - case 270: - matrix23Set(m, 0, -1, height, 1, 0, 0); - break; - default: - /*abort()*/; - } -} - - -/* - * Make flip/reflection matrix for width X height screen. - */ -void -matrix23Flip(struct matrix23 *m, int width, int height, int xflip, int yflip) -{ - if (xflip) { - m->m00 = -1; m->m01 = 0; m->m02 = width - 1; - } - else { - m->m00 = 1; m->m01 = 0; m->m02 = 0; - } - if (yflip) { - m->m10 = 0; m->m11 = -1; m->m12 = height - 1; - } - else { - m->m10 = 0; m->m11 = 1; m->m12 = 0; - } -} - - -/* - * result = a * b - */ -void -matrix23Multiply(struct matrix23 *result, - const struct matrix23 *a, const struct matrix23 *b) -{ - result->m00 = a->m00 * b->m00 + a->m01 * b->m10; - result->m01 = a->m00 * b->m01 + a->m01 * b->m11; - result->m02 = a->m00 * b->m02 + a->m01 * b->m12 + a->m02; - - result->m10 = a->m10 * b->m00 + a->m11 * b->m10; - result->m11 = a->m10 * b->m01 + a->m11 * b->m11; - result->m12 = a->m10 * b->m02 + a->m11 * b->m12 + a->m12; -} - - -#if 000 - -#include <stdio.h> - -int -main(int argc, char *argv[]) -{ - int width = 500, height = 400; - int rot; - int fx = 0, fy = 0; /* flip x and/or y ? */ - int coords[4][2]; - - /* four corner coords to test with */ - coords[0][0] = 0; coords[0][1] = 0; - coords[1][0] = width-1; coords[1][1] = 0; - coords[2][0] = width-1; coords[2][1] = height-1; - coords[3][0] = 0; coords[3][1] = height-1; - - - for (rot = 0; rot < 360; rot += 90) { - struct matrix23 rotate, flip, m; - int i; - - printf("Rot %d, xFlip %d, yFlip %d:\n", rot, fx, fy); - - /* make transformation matrix 'm' */ - matrix23Rotate(&rotate, width, height, rot); - matrix23Flip(&flip, width, height, fx, fy); - matrix23Multiply(&m, &rotate, &flip); - - /* xform four coords */ - for (i = 0; i < 4; i++) { - int x = coords[i][0]; - int y = coords[i][1]; - matrix23TransformCoordi(&m, &x, &y); - printf(" %d, %d -> %d %d\n", coords[i][0], coords[i][1], x, y); - } - - /* xform width, height */ - { - int x = width; - int y = height; - matrix23TransformDistance(&m, &x, &y); - printf(" %d x %d -> %d x %d\n", width, height, x, y); - } - - /* xform rect */ - { - int x = 50, y = 10, w = 200, h = 100; - matrix23TransformRect(&m, &x, &y, &w, &h); - printf(" %d,%d %d x %d -> %d, %d %d x %d\n", 50, 10, 200, 100, - x, y, w, h); - } - - } - - return 0; -} -#endif |