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path: root/src/gallium/state_trackers/xorg/xorg_renderer.c
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Diffstat (limited to 'src/gallium/state_trackers/xorg/xorg_renderer.c')
-rw-r--r--src/gallium/state_trackers/xorg/xorg_renderer.c130
1 files changed, 104 insertions, 26 deletions
diff --git a/src/gallium/state_trackers/xorg/xorg_renderer.c b/src/gallium/state_trackers/xorg/xorg_renderer.c
index ca69e1e0e92..3dd5e6e811d 100644
--- a/src/gallium/state_trackers/xorg/xorg_renderer.c
+++ b/src/gallium/state_trackers/xorg/xorg_renderer.c
@@ -11,11 +11,39 @@
#include "pipe/p_inlines.h"
+#include <math.h>
+
enum AxisOrientation {
Y0_BOTTOM,
Y0_TOP
};
+#define floatsEqual(x, y) (fabs(x - y) <= 0.00001f * MIN2(fabs(x), fabs(y)))
+#define floatIsZero(x) (floatsEqual((x) + 1, 1))
+
+static INLINE boolean is_affine(float *matrix)
+{
+ return floatIsZero(matrix[2]) && floatIsZero(matrix[5])
+ && floatsEqual(matrix[8], 1);
+}
+static INLINE void map_point(float *mat, float x, float y,
+ float *out_x, float *out_y)
+{
+ if (!mat) {
+ *out_x = x;
+ *out_y = y;
+ return;
+ }
+
+ *out_x = mat[0]*x + mat[3]*y + mat[6];
+ *out_y = mat[1]*x + mat[4]*y + mat[7];
+ if (!is_affine(mat)) {
+ float w = 1/(mat[2]*x + mat[5]*y + mat[8]);
+ *out_x *= w;
+ *out_y *= w;
+ }
+}
+
static void
renderer_init_state(struct xorg_renderer *r)
{
@@ -60,23 +88,38 @@ static struct pipe_buffer *
setup_vertex_data1(struct xorg_renderer *r,
int srcX, int srcY, int dstX, int dstY,
int width, int height,
- struct pipe_texture *src)
+ struct pipe_texture *src, float *src_matrix)
{
- float s0, t0, s1, t1;
+ float s0, t0, s1, t1, stmp, ttmp;
s0 = srcX / src->width[0];
s1 = srcX + width / src->width[0];
t0 = srcY / src->height[0];
t1 = srcY + height / src->height[0];
- /* 1st vertex */
- setup_vertex1(r->vertices2[0], dstX, dstY, s0, t0);
- /* 2nd vertex */
- setup_vertex1(r->vertices2[1], dstX + width, dstY, s1, t0);
- /* 3rd vertex */
- setup_vertex1(r->vertices2[2], dstX + width, dstY + height, s1, t1);
- /* 4th vertex */
- setup_vertex1(r->vertices2[3], dstX, dstY + height, s0, t1);
+ if (src_matrix) {
+ /* 1st vertex */
+ map_point(src_matrix, s0, t0, &stmp, &ttmp);
+ setup_vertex1(r->vertices2[0], dstX, dstY, stmp, ttmp);
+ /* 2nd vertex */
+ map_point(src_matrix, s1, t0, &stmp, &ttmp);
+ setup_vertex1(r->vertices2[1], dstX + width, dstY, stmp, ttmp);
+ /* 3rd vertex */
+ map_point(src_matrix, s1, t1, &stmp, &ttmp);
+ setup_vertex1(r->vertices2[2], dstX + width, dstY + height, stmp, ttmp);
+ /* 4th vertex */
+ map_point(src_matrix, s0, t1, &stmp, &ttmp);
+ setup_vertex1(r->vertices2[3], dstX, dstY + height, stmp, ttmp);
+ } else {
+ /* 1st vertex */
+ setup_vertex1(r->vertices2[0], dstX, dstY, s0, t0);
+ /* 2nd vertex */
+ setup_vertex1(r->vertices2[1], dstX + width, dstY, s1, t0);
+ /* 3rd vertex */
+ setup_vertex1(r->vertices2[2], dstX + width, dstY + height, s1, t1);
+ /* 4th vertex */
+ setup_vertex1(r->vertices2[3], dstX, dstY + height, s0, t1);
+ }
return pipe_user_buffer_create(r->pipe->screen,
r->vertices2,
@@ -128,9 +171,11 @@ setup_vertex_data2(struct xorg_renderer *r,
int srcX, int srcY, int maskX, int maskY,
int dstX, int dstY, int width, int height,
struct pipe_texture *src,
- struct pipe_texture *mask)
+ struct pipe_texture *mask,
+ float *src_matrix, float *mask_matrix)
{
float st0[4], st1[4];
+ float pt0[2], pt1[2];
st0[0] = srcX / src->width[0];
st0[1] = srcY / src->height[0];
@@ -142,18 +187,49 @@ setup_vertex_data2(struct xorg_renderer *r,
st1[2] = maskX + width / mask->width[0];
st1[3] = maskY + height / mask->height[0];
- /* 1st vertex */
- setup_vertex2(r->vertices3[0], dstX, dstY,
- st0[0], st0[1], st1[0], st1[1]);
- /* 2nd vertex */
- setup_vertex2(r->vertices3[1], dstX + width, dstY,
- st0[2], st0[1], st1[2], st1[1]);
- /* 3rd vertex */
- setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
- st0[2], st0[3], st1[2], st1[3]);
- /* 4th vertex */
- setup_vertex2(r->vertices3[3], dstX, dstY + height,
- st0[0], st0[3], st1[0], st1[3]);
+ if (src_matrix || mask_matrix) {
+ /* 1st vertex */
+ map_point(src_matrix, st0[0], st0[1],
+ pt0 + 0, pt0 + 1);
+ map_point(mask_matrix, st1[0], st1[1],
+ pt1 + 0, pt1 + 1);
+ setup_vertex2(r->vertices3[0], dstX, dstY,
+ pt0[0], pt0[1], pt1[0], pt1[1]);
+ /* 2nd vertex */
+ map_point(src_matrix, st0[2], st0[1],
+ pt0 + 0, pt0 + 1);
+ map_point(mask_matrix, st1[2], st1[1],
+ pt1 + 0, pt1 + 1);
+ setup_vertex2(r->vertices3[1], dstX + width, dstY,
+ pt0[0], pt0[1], pt1[0], pt1[1]);
+ /* 3rd vertex */
+ map_point(src_matrix, st0[2], st0[3],
+ pt0 + 0, pt0 + 1);
+ map_point(mask_matrix, st1[2], st1[3],
+ pt1 + 0, pt1 + 1);
+ setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
+ pt0[0], pt0[1], pt1[0], pt1[1]);
+ /* 4th vertex */
+ map_point(src_matrix, st0[0], st0[3],
+ pt0 + 0, pt0 + 1);
+ map_point(mask_matrix, st1[0], st1[3],
+ pt1 + 0, pt1 + 1);
+ setup_vertex2(r->vertices3[3], dstX, dstY + height,
+ pt0[0], pt0[1], pt1[0], pt1[1]);
+ } else {
+ /* 1st vertex */
+ setup_vertex2(r->vertices3[0], dstX, dstY,
+ st0[0], st0[1], st1[0], st1[1]);
+ /* 2nd vertex */
+ setup_vertex2(r->vertices3[1], dstX + width, dstY,
+ st0[2], st0[1], st1[2], st1[1]);
+ /* 3rd vertex */
+ setup_vertex2(r->vertices3[2], dstX + width, dstY + height,
+ st0[2], st0[3], st1[2], st1[3]);
+ /* 4th vertex */
+ setup_vertex2(r->vertices3[3], dstX, dstY + height,
+ st0[0], st0[3], st1[0], st1[3]);
+ }
return pipe_user_buffer_create(r->pipe->screen,
r->vertices3,
@@ -721,7 +797,8 @@ void renderer_draw_textures(struct xorg_renderer *r,
int *pos,
int width, int height,
struct pipe_texture **textures,
- int num_textures)
+ int num_textures,
+ float *src_matrix, float *mask_matrix)
{
struct pipe_context *pipe = r->pipe;
struct pipe_buffer *buf = 0;
@@ -732,7 +809,7 @@ void renderer_draw_textures(struct xorg_renderer *r,
pos[0], pos[1], /* src */
pos[4], pos[5], /* dst */
width, height,
- textures[0]);
+ textures[0], src_matrix);
break;
case 2:
buf = setup_vertex_data2(r,
@@ -740,7 +817,8 @@ void renderer_draw_textures(struct xorg_renderer *r,
pos[2], pos[3], /* mask */
pos[4], pos[5], /* dst */
width, height,
- textures[0], textures[1]);
+ textures[0], textures[1],
+ src_matrix, mask_matrix);
break;
default:
debug_assert(!"Unsupported number of textures");
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-01 05:50:58 +0000