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st/dri: Add support for DRIimage extension mapImage/unmapImage

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Implement support for mapImage/unmapImage functions in version 12 of the
DRIimage extension.

Signed-off-by: Rob Herring <robh@kernel.org>
[Emil Velikov: align/indent the map/unmap vfuncs]
Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Rob Herring 2016-05-03 21:02:44 -05:00 • committed by Emil Velikov
parent a0f06f168f
commit e8431a630d
1 changed files with 42 additions and 1 deletions
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43
src/gallium/state_trackers/dri/dri2.c
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@ -1232,6 +1232,45 @@ dri2_blit_image(__DRIcontext *context, __DRIimage *dst, __DRIimage *src,
}
}
static void *
dri2_map_image(__DRIcontext *context, __DRIimage *image,
int x0, int y0, int width, int height,
unsigned int flags, int *stride, void **data)
{
struct dri_context *ctx = dri_context(context);
struct pipe_context *pipe = ctx->st->pipe;
enum pipe_transfer_usage pipe_access = 0;
struct pipe_transfer *trans;
void *map;
if (!image || !data || *data)
return NULL;
if (flags & __DRI_IMAGE_TRANSFER_READ)
pipe_access |= PIPE_TRANSFER_READ;
if (flags & __DRI_IMAGE_TRANSFER_WRITE)
pipe_access |= PIPE_TRANSFER_WRITE;
map = pipe_transfer_map(pipe, image->texture,
0, 0, pipe_access, x0, y0, width, height,
&trans);
if (map) {
*data = trans;
*stride = trans->stride;
}
return map;
}
static void
dri2_unmap_image(__DRIcontext *context, __DRIimage *image, void *data)
{
struct dri_context *ctx = dri_context(context);
struct pipe_context *pipe = ctx->st->pipe;
pipe_transfer_unmap(pipe, (struct pipe_transfer *)data);
}
static void
dri2_destroy_image(__DRIimage *img)
{
@ -1249,7 +1288,7 @@ dri2_get_capabilities(__DRIscreen *_screen)
/* The extension is modified during runtime if DRI_PRIME is detected */
static __DRIimageExtension dri2ImageExtension = {
.base = { __DRI_IMAGE, 11 },
.base = { __DRI_IMAGE, 12 },
.createImageFromName = dri2_create_image_from_name,
.createImageFromRenderbuffer = dri2_create_image_from_renderbuffer,
@ -1265,6 +1304,8 @@ static __DRIimageExtension dri2ImageExtension = {
.createImageFromDmaBufs = NULL,
.blitImage = dri2_blit_image,
.getCapabilities = dri2_get_capabilities,
.mapImage = dri2_map_image,
.unmapImage = dri2_unmap_image,
};