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-rw-r--r--src/gallium/auxiliary/util/u_rect.c178
-rw-r--r--src/gallium/auxiliary/util/u_rect.h18
2 files changed, 196 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_rect.c b/src/gallium/auxiliary/util/u_rect.c
index b31ab5415fa..f5619ef791d 100644
--- a/src/gallium/auxiliary/util/u_rect.c
+++ b/src/gallium/auxiliary/util/u_rect.c
@@ -32,6 +32,8 @@
#include "pipe/p_defines.h"
#include "pipe/p_format.h"
+#include "pipe/p_context.h"
+#include "pipe/p_screen.h"
#include "util/u_rect.h"
@@ -148,3 +150,179 @@ pipe_fill_rect(ubyte * dst,
break;
}
}
+
+
+
+/**
+ * Fallback function for pipe->surface_copy().
+ * Note: (X,Y)=(0,0) is always the upper-left corner.
+ * if do_flip, flip the image vertically on its way from src rect to dst rect.
+ * XXX should probably put this in new u_surface.c file...
+ */
+void
+util_surface_copy(struct pipe_context *pipe,
+ boolean do_flip,
+ struct pipe_surface *dst,
+ unsigned dst_x, unsigned dst_y,
+ struct pipe_surface *src,
+ unsigned src_x, unsigned src_y,
+ unsigned w, unsigned h)
+{
+ struct pipe_screen *screen = pipe->screen;
+ struct pipe_surface *new_src = NULL, *new_dst = NULL;
+ void *dst_map;
+ const void *src_map;
+
+ assert(dst->block.size == src->block.size);
+ assert(dst->block.width == src->block.width);
+ assert(dst->block.height == src->block.height);
+
+ if ((src->usage & PIPE_BUFFER_USAGE_CPU_READ) == 0) {
+ /* Need to create new src surface which is CPU readable */
+ assert(src->texture);
+ if (!src->texture)
+ return;
+ new_src = screen->get_tex_surface(screen,
+ src->texture,
+ src->face,
+ src->level,
+ src->zslice,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ src = new_src;
+ }
+
+ if ((dst->usage & PIPE_BUFFER_USAGE_CPU_WRITE) == 0) {
+ /* Need to create new dst surface which is CPU writable */
+ assert(dst->texture);
+ if (!dst->texture)
+ return;
+ new_dst = screen->get_tex_surface(screen,
+ dst->texture,
+ dst->face,
+ dst->level,
+ dst->zslice,
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+ dst = new_dst;
+ }
+
+ src_map = pipe->screen->surface_map(screen,
+ src, PIPE_BUFFER_USAGE_CPU_READ);
+ dst_map = pipe->screen->surface_map(screen,
+ dst, PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ assert(src_map);
+ assert(dst_map);
+
+ if (src_map && dst_map) {
+ /* If do_flip, invert src_y position and pass negative src stride */
+ pipe_copy_rect(dst_map,
+ &dst->block,
+ dst->stride,
+ dst_x, dst_y,
+ w, h,
+ src_map,
+ do_flip ? -(int) src->stride : src->stride,
+ src_x, src_y);
+ }
+
+ pipe->screen->surface_unmap(pipe->screen, src);
+ pipe->screen->surface_unmap(pipe->screen, dst);
+
+ if (new_src)
+ screen->tex_surface_release(screen, &new_src);
+ if (new_dst)
+ screen->tex_surface_release(screen, &new_dst);
+}
+
+
+
+static void *
+get_pointer(struct pipe_surface *dst, void *dst_map, unsigned x, unsigned y)
+{
+ return (char *)dst_map
+ + y / dst->block.height * dst->stride
+ + x / dst->block.width * dst->block.size;
+}
+
+
+#define UBYTE_TO_USHORT(B) ((B) | ((B) << 8))
+
+
+/**
+ * Fallback for pipe->surface_fill() function.
+ * XXX should probably put this in new u_surface.c file...
+ */
+void
+util_surface_fill(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height, unsigned value)
+{
+ struct pipe_screen *screen = pipe->screen;
+ struct pipe_surface *new_dst = NULL;
+ void *dst_map;
+
+ if ((dst->usage & PIPE_BUFFER_USAGE_CPU_WRITE) == 0) {
+ /* Need to create new dst surface which is CPU writable */
+ assert(dst->texture);
+ if (!dst->texture)
+ return;
+ new_dst = screen->get_tex_surface(screen,
+ dst->texture,
+ dst->face,
+ dst->level,
+ dst->zslice,
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+ dst = new_dst;
+ }
+
+ dst_map = pipe->screen->surface_map(screen,
+ dst, PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ assert(dst_map);
+
+ if (dst_map) {
+ assert(dst->stride > 0);
+
+ switch (dst->block.size) {
+ case 1:
+ case 2:
+ case 4:
+ pipe_fill_rect(dst_map, &dst->block, dst->stride,
+ dstx, dsty, width, height, value);
+ break;
+ case 8:
+ {
+ /* expand the 4-byte clear value to an 8-byte value */
+ ushort *row = (ushort *) get_pointer(dst, dst_map, dstx, dsty);
+ ushort val0 = UBYTE_TO_USHORT((value >> 0) & 0xff);
+ ushort val1 = UBYTE_TO_USHORT((value >> 8) & 0xff);
+ ushort val2 = UBYTE_TO_USHORT((value >> 16) & 0xff);
+ ushort val3 = UBYTE_TO_USHORT((value >> 24) & 0xff);
+ unsigned i, j;
+ val0 = (val0 << 8) | val0;
+ val1 = (val1 << 8) | val1;
+ val2 = (val2 << 8) | val2;
+ val3 = (val3 << 8) | val3;
+ for (i = 0; i < height; i++) {
+ for (j = 0; j < width; j++) {
+ row[j*4+0] = val0;
+ row[j*4+1] = val1;
+ row[j*4+2] = val2;
+ row[j*4+3] = val3;
+ }
+ row += dst->stride/2;
+ }
+ }
+ break;
+ default:
+ assert(0);
+ break;
+ }
+ }
+
+ pipe->screen->surface_unmap(pipe->screen, dst);
+
+ if (new_dst)
+ screen->tex_surface_release(screen, &new_dst);
+}
diff --git a/src/gallium/auxiliary/util/u_rect.h b/src/gallium/auxiliary/util/u_rect.h
index fba48088641..59e842e16d1 100644
--- a/src/gallium/auxiliary/util/u_rect.h
+++ b/src/gallium/auxiliary/util/u_rect.h
@@ -37,6 +37,9 @@
#include "pipe/p_format.h"
+struct pipe_context;
+struct pipe_surface;
+
extern void
pipe_copy_rect(ubyte * dst, const struct pipe_format_block *block,
@@ -50,5 +53,20 @@ pipe_fill_rect(ubyte * dst, const struct pipe_format_block *block,
unsigned width, unsigned height, uint32_t value);
+extern void
+util_surface_copy(struct pipe_context *pipe,
+ boolean do_flip,
+ struct pipe_surface *dst,
+ unsigned dst_x, unsigned dst_y,
+ struct pipe_surface *src,
+ unsigned src_x, unsigned src_y,
+ unsigned w, unsigned h);
+
+extern void
+util_surface_fill(struct pipe_context *pipe,
+ struct pipe_surface *dst,
+ unsigned dstx, unsigned dsty,
+ unsigned width, unsigned height, unsigned value);
+
#endif /* U_RECT_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-18 13:42:13 +0000