163 lines
5.2 KiB
C
163 lines
5.2 KiB
C
#ifndef GLAMOR_PRIV_H
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#error This file can only be included by glamor_priv.h
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#endif
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#ifndef __GLAMOR_UTILS_H__
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#define __GLAMOR_UTILS_H__
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#define v_from_x_coord_x(_xscale_, _x_) ( 2 * (_x_) * (_xscale_) - 1.0)
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#define v_from_x_coord_y(_yscale_, _y_) (-2 * (_y_) * (_yscale_) + 1.0)
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#define v_from_x_coord_y_inverted(_yscale_, _y_) (2 * (_y_) * (_yscale_) - 1.0)
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#define t_from_x_coord_x(_xscale_, _x_) ((_x_) * (_xscale_))
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#define t_from_x_coord_y(_yscale_, _y_) (1.0 - (_y_) * (_yscale_))
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#define t_from_x_coord_y_inverted(_yscale_, _y_) ((_y_) * (_yscale_))
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#define pixmap_priv_get_scale(_pixmap_priv_, _pxscale_, _pyscale_) \
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do { \
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*(_pxscale_) = 1.0 / (_pixmap_priv_)->container->drawable.width; \
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*(_pyscale_) = 1.0 / (_pixmap_priv_)->container->drawable.height; \
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} while(0)
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#define xFixedToFloat(_val_) ((float)xFixedToInt(_val_) \
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+ ((float)xFixedFrac(_val_) / 65536.0))
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#define glamor_picture_get_matrixf(_picture_, _matrix_) \
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do { \
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int _i_; \
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if ((_picture_)->transform) \
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{ \
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for(_i_ = 0; _i_ < 3; _i_++) \
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{ \
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(_matrix_)[_i_ * 3 + 0] = \
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xFixedToFloat((_picture_)->transform->matrix[_i_][0]); \
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(_matrix_)[_i_ * 3 + 1] = \
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xFixedToFloat((_picture_)->transform->matrix[_i_][1]); \
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(_matrix_)[_i_ * 3 + 2] = \
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xFixedToFloat((_picture_)->transform->matrix[_i_][2]); \
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} \
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} \
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} while(0)
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#define glamor_set_transformed_point(matrix, xscale, yscale, texcoord, \
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x, y, yInverted) \
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do { \
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float result[4]; \
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int i; \
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float tx, ty; \
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\
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for (i = 0; i < 3; i++) { \
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result[i] = (matrix)[i * 3] * (x) + (matrix)[i * 3 + 1] * (y) \
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+ (matrix)[i * 3 + 2]; \
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} \
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tx = result[0] / result[2]; \
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ty = result[1] / result[2]; \
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\
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(texcoord)[0] = t_from_x_coord_x(xscale, tx); \
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if (yInverted) \
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(texcoord)[1] = t_from_x_coord_y_inverted(yscale, ty); \
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else \
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(texcoord)[1] = t_from_x_coord_y(yscale, ty); \
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} while(0)
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#define glamor_set_transformed_normalize_tcoords( matrix, \
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xscale, \
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yscale, \
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tx1, ty1, tx2, ty2, \
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yInverted, texcoords) \
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do { \
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glamor_set_transformed_point(matrix, xscale, yscale, \
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texcoords, tx1, ty1, \
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yInverted); \
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glamor_set_transformed_point(matrix, xscale, yscale, \
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texcoords + 2, tx2, ty1, \
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yInverted); \
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glamor_set_transformed_point(matrix, xscale, yscale, \
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texcoords + 4, tx2, ty2, \
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yInverted); \
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glamor_set_transformed_point(matrix, xscale, yscale, \
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texcoords + 6, tx1, ty2, \
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yInverted); \
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} while (0)
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#define glamor_set_normalize_tcoords(xscale, yscale, x1, y1, x2, y2, \
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yInverted, vertices) \
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do { \
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(vertices)[0] = t_from_x_coord_x(xscale, x1); \
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(vertices)[2] = t_from_x_coord_x(xscale, x2); \
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(vertices)[4] = (vertices)[2]; \
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(vertices)[6] = (vertices)[0]; \
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if (yInverted) { \
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(vertices)[1] = t_from_x_coord_y_inverted(yscale, y1); \
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(vertices)[5] = t_from_x_coord_y_inverted(yscale, y2); \
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} \
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else { \
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(vertices)[1] = t_from_x_coord_y(yscale, y1); \
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(vertices)[5] = t_from_x_coord_y(yscale, y2); \
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} \
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(vertices)[3] = (vertices)[1]; \
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(vertices)[7] = (vertices)[5]; \
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} while(0)
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#define glamor_set_normalize_vcoords(xscale, yscale, x1, y1, x2, y2, \
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yInverted, vertices) \
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do { \
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(vertices)[0] = v_from_x_coord_x(xscale, x1); \
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(vertices)[2] = v_from_x_coord_x(xscale, x2); \
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(vertices)[4] = (vertices)[2]; \
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(vertices)[6] = (vertices)[0]; \
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if (yInverted) { \
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(vertices)[1] = v_from_x_coord_y_inverted(yscale, y1); \
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(vertices)[5] = v_from_x_coord_y_inverted(yscale, y2); \
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} \
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else { \
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(vertices)[1] = v_from_x_coord_y(yscale, y1); \
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(vertices)[5] = v_from_x_coord_y(yscale, y2); \
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} \
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(vertices)[3] = (vertices)[1]; \
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(vertices)[7] = (vertices)[5]; \
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} while(0)
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inline static void
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glamor_calculate_boxes_bound(BoxPtr bound, BoxPtr boxes, int nbox)
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{
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int x_min, y_min;
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int x_max, y_max;
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int i;
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x_min = y_min = MAXSHORT;
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x_max = y_max = MINSHORT;
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for(i = 0; i < nbox; i++)
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{
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if (x_min > boxes[i].x1)
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x_min = boxes[i].x1;
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if (y_min > boxes[i].y1)
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y_min = boxes[i].y1;
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if (x_max < boxes[i].x2)
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x_max = boxes[i].x2;
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if (y_max < boxes[i].y2)
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y_max = boxes[i].y2;
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}
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bound->x1 = x_min;
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bound->y1 = y_min;
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bound->x2 = x_max;
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bound->y2 = y_max;
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}
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inline static void
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glamor_transform_boxes(BoxPtr boxes, int nbox, int dx, int dy)
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{
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int i;
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for (i = 0; i < nbox; i++)
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{
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boxes[i].x1 += dx;
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boxes[i].y1 += dy;
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boxes[i].x2 += dx;
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boxes[i].y2 += dy;
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}
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}
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#endif
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