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state_trackers/dri/sw: Implement texture_from_pixmap. 

Signed-off-by: Stuart Abercrombie <sabercrombie@chromium.org>
Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
This commit is contained in:
Stéphane Marchesin 2011-08-29 17:22:03 -07:00
parent 569bde1fa7
commit 02f1b50987
1 changed files with 42 additions and 6 deletions
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48
src/gallium/state_trackers/dri/sw/dri_drawable.c
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@ -37,7 +37,8 @@
#include "util/u_format.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "state_tracker/st_context.h"
static boolean
dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
@ -195,14 +196,23 @@ dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
{
struct dri_context *ctx = dri_context(pDRICtx);
struct dri_drawable *drawable = dri_drawable(dPriv);
struct pipe_resource *pt;
struct pipe_resource *res;
struct st_context *stctx = (struct st_context *)ctx->st;
struct pipe_context *pipe = stctx->pipe;
struct pipe_transfer *tex_xfer;
char *map;
__DRIscreen *sPriv = dPriv->driScreenPriv;
int x, y, w, h, line, ximage_stride;
sPriv->swrast_loader->getDrawableInfo(dPriv, &x, &y, &w, &h, dPriv->loaderPrivate);
dri_drawable_validate_att(drawable, ST_ATTACHMENT_FRONT_LEFT);
pt = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
/* Use the pipe resource associated with the X drawable */
res = drawable->textures[ST_ATTACHMENT_FRONT_LEFT];
if (pt) {
enum pipe_format internal_format = pt->format;
if (res) {
enum pipe_format internal_format = res->format;
if (format == __DRI_TEXTURE_FORMAT_RGB) {
/* only need to cover the formats recognized by dri_fill_st_visual */
@ -218,9 +228,35 @@ dri_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
}
}
tex_xfer = pipe_get_transfer(pipe, res,
0, 0, // level, layer
PIPE_TRANSFER_WRITE,
x, y,
w, h);
map = pipe_transfer_map(pipe, tex_xfer);
/* Copy the Drawable content to the mapped texture buffer */
sPriv->swrast_loader->getImage(dPriv, x, y, w, h, map,
dPriv->loaderPrivate);
/* The pipe transfer has a pitch rounded up to the nearest 64 pixels.
We assume 32 bit pixels. */
ximage_stride = w * 4;
for (line = h-1; line; --line) {
memmove(&map[line * tex_xfer->stride], &map[line * ximage_stride], ximage_stride);
}
pipe_transfer_unmap(pipe, tex_xfer);
pipe_transfer_destroy(pipe, tex_xfer);
ctx->st->teximage(ctx->st,
(target == GL_TEXTURE_2D) ? ST_TEXTURE_2D : ST_TEXTURE_RECT,
0, internal_format, pt, FALSE);
0, internal_format, res, FALSE);
}
}