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i965: Add a RGBX->RGBA fallback for glEGLImageTextureTarget2D()

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This enables support for importing RGBX8888 EGLImage textures on
Skylake.

Chrome OS needs support for RGBX8888 EGLImage textures because because
the Android framework produces HAL_PIXEL_FORMAT_RGBX8888 winsys
surfaces, which the Chrome OS compositor consumes as dma_bufs.  On
hardware for which RGBX is unsupported or disabled, normally core Mesa
provides the RGBX->RGBA fallback during glTexStorage.  But the DRIimage
code bypasses core Mesa, so we must do the fallback in i965.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chad Versace
2017-05-30 12:27:54 -07:00
parent a1983223d8
commit 74db56b97a
1 changed files with 16 additions and 2 deletions
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18
src/mesa/drivers/dri/i965/intel_tex_image.c
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@@ -267,8 +267,22 @@ create_mt_for_dri_image(struct brw_context *brw,
struct gl_context *ctx = &brw->ctx;
struct intel_mipmap_tree *mt;
uint32_t draw_x, draw_y;
mesa_format format = image->format;
if (!ctx->TextureFormatSupported[image->format])
if (!ctx->TextureFormatSupported[format]) {
/* The texture storage paths in core Mesa detect if the driver does not
* support the user-requested format, and then searches for a
* fallback format. The DRIimage code bypasses core Mesa, though. So we
* do the fallbacks here for important formats.
*
* We must support DRM_FOURCC_XBGR8888 textures because the Android
* framework produces HAL_PIXEL_FORMAT_RGBX8888 winsys surfaces, which
* the Chrome OS compositor consumes as dma_buf EGLImages.
*/
format = _mesa_format_fallback_rgbx_to_rgba(format);
}
if (!ctx->TextureFormatSupported[format])
return NULL;
/* Disable creation of the texture's aux buffers because the driver exposes
@@ -276,7 +290,7 @@ create_mt_for_dri_image(struct brw_context *brw,
* buffer's content to the main buffer nor for invalidating the aux buffer's
* content.
*/
mt = intel_miptree_create_for_bo(brw, image->bo, image->format,
mt = intel_miptree_create_for_bo(brw, image->bo, format,
0, image->width, image->height, 1,
image->pitch,
MIPTREE_LAYOUT_DISABLE_AUX);