render: remove wlr_texture_to_dmabuf

This is unused in wlroots, and the use-cases for compositors are
pretty niche since they can access the original DMA-BUF via the
wlr_buffer.

include/wlr/render/egl.h

@@ -46,7 +46,6 @@ struct wlr_egl {
 		// Display extensions
 		bool bind_wayland_display_wl;
 		bool image_base_khr;
-		bool image_dma_buf_export_mesa;
 		bool image_dmabuf_import_ext;
 		bool image_dmabuf_import_modifiers_ext;
 
@@ -63,8 +62,6 @@ struct wlr_egl {
 		PFNEGLUNBINDWAYLANDDISPLAYWL eglUnbindWaylandDisplayWL;
 		PFNEGLQUERYDMABUFFORMATSEXTPROC eglQueryDmaBufFormatsEXT;
 		PFNEGLQUERYDMABUFMODIFIERSEXTPROC eglQueryDmaBufModifiersEXT;
-		PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC eglExportDMABUFImageQueryMESA;
-		PFNEGLEXPORTDMABUFIMAGEMESAPROC eglExportDMABUFImageMESA;
 		PFNEGLDEBUGMESSAGECONTROLKHRPROC eglDebugMessageControlKHR;
 		PFNEGLQUERYDISPLAYATTRIBEXTPROC eglQueryDisplayAttribEXT;
 		PFNEGLQUERYDEVICESTRINGEXTPROC eglQueryDeviceStringEXT;

include/wlr/render/interface.h

@@ -69,8 +69,6 @@ struct wlr_texture_impl {
 		uint32_t stride, uint32_t width, uint32_t height,
 		uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
 		const void *data);
-	bool (*to_dmabuf)(struct wlr_texture *texture,
-		struct wlr_dmabuf_attributes *attribs);
 	void (*destroy)(struct wlr_texture *texture);
 };
 

include/wlr/render/wlr_texture.h

@@ -76,9 +76,6 @@ bool wlr_texture_write_pixels(struct wlr_texture *texture,
 	uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
 	const void *data);
 
-bool wlr_texture_to_dmabuf(struct wlr_texture *texture,
-	struct wlr_dmabuf_attributes *attribs);
-
 /**
  * Destroys this wlr_texture.
  */

render/egl.c

@@ -241,14 +241,6 @@ struct wlr_egl *wlr_egl_create(EGLenum platform, void *remote_display) {
 			"eglQueryDmaBufModifiersEXT");
 	}
 
-	if (check_egl_ext(display_exts_str, "EGL_MESA_image_dma_buf_export")) {
-		egl->exts.image_dma_buf_export_mesa = true;
-		load_egl_proc(&egl->procs.eglExportDMABUFImageQueryMESA,
-			"eglExportDMABUFImageQueryMESA");
-		load_egl_proc(&egl->procs.eglExportDMABUFImageMESA,
-			"eglExportDMABUFImageMESA");
-	}
-
 	if (check_egl_ext(display_exts_str, "EGL_WL_bind_wayland_display")) {
 		egl->exts.bind_wayland_display_wl = true;
 		load_egl_proc(&egl->procs.eglBindWaylandDisplayWL,
@@ -699,37 +691,6 @@ const struct wlr_drm_format_set *wlr_egl_get_dmabuf_render_formats(
 	return &egl->dmabuf_render_formats;
 }
 
-bool wlr_egl_export_image_to_dmabuf(struct wlr_egl *egl, EGLImageKHR image,
-		int32_t width, int32_t height, uint32_t flags,
-		struct wlr_dmabuf_attributes *attribs) {
-	memset(attribs, 0, sizeof(struct wlr_dmabuf_attributes));
-
-	if (!egl->exts.image_dma_buf_export_mesa) {
-		return false;
-	}
-
-	// Only one set of modifiers is returned for all planes
-	if (!egl->procs.eglExportDMABUFImageQueryMESA(egl->display, image,
-			(int *)&attribs->format, &attribs->n_planes, &attribs->modifier)) {
-		return false;
-	}
-	if (attribs->n_planes > WLR_DMABUF_MAX_PLANES) {
-		wlr_log(WLR_ERROR, "EGL returned %d planes, but only %d are supported",
-			attribs->n_planes, WLR_DMABUF_MAX_PLANES);
-		return false;
-	}
-
-	if (!egl->procs.eglExportDMABUFImageMESA(egl->display, image, attribs->fd,
-			(EGLint *)attribs->stride, (EGLint *)attribs->offset)) {
-		return false;
-	}
-
-	attribs->width = width;
-	attribs->height = height;
-	attribs->flags = flags;
-	return true;
-}
-
 static bool device_has_name(const drmDevice *device, const char *name) {
 	for (size_t i = 0; i < DRM_NODE_MAX; i++) {
 		if (!(device->available_nodes & (1 << i))) {

render/gles2/texture.c

@@ -98,34 +98,6 @@ static bool gles2_texture_write_pixels(struct wlr_texture *wlr_texture,
 	return true;
 }
 
-static bool gles2_texture_to_dmabuf(struct wlr_texture *wlr_texture,
-		struct wlr_dmabuf_attributes *attribs) {
-	struct wlr_gles2_texture *texture = gles2_get_texture(wlr_texture);
-
-	if (!texture->image) {
-		assert(texture->target == GL_TEXTURE_2D);
-
-		if (!texture->renderer->egl->exts.image_base_khr) {
-			return false;
-		}
-
-		texture->image = texture->renderer->egl->procs.eglCreateImageKHR(
-			texture->renderer->egl->display, texture->renderer->egl->context, EGL_GL_TEXTURE_2D_KHR,
-			(EGLClientBuffer)(uintptr_t)texture->tex, NULL);
-		if (texture->image == EGL_NO_IMAGE_KHR) {
-			return false;
-		}
-	}
-
-	uint32_t flags = 0;
-	if (texture->inverted_y) {
-		flags |= WLR_DMABUF_ATTRIBUTES_FLAGS_Y_INVERT;
-	}
-
-	return wlr_egl_export_image_to_dmabuf(texture->renderer->egl, texture->image,
-		wlr_texture->width, wlr_texture->height, flags, attribs);
-}
-
 static void gles2_texture_destroy(struct wlr_texture *wlr_texture) {
 	if (wlr_texture == NULL) {
 		return;
@@ -152,7 +124,6 @@ static void gles2_texture_destroy(struct wlr_texture *wlr_texture) {
 static const struct wlr_texture_impl texture_impl = {
 	.is_opaque = gles2_texture_is_opaque,
 	.write_pixels = gles2_texture_write_pixels,
-	.to_dmabuf = gles2_texture_to_dmabuf,
 	.destroy = gles2_texture_destroy,
 };
 

render/wlr_texture.c

@@ -65,11 +65,3 @@ bool wlr_texture_write_pixels(struct wlr_texture *texture,
 	return texture->impl->write_pixels(texture, stride, width, height,
 		src_x, src_y, dst_x, dst_y, data);
 }
-
-bool wlr_texture_to_dmabuf(struct wlr_texture *texture,
-		struct wlr_dmabuf_attributes *attribs) {
-	if (!texture->impl->to_dmabuf) {
-		return false;
-	}
-	return texture->impl->to_dmabuf(texture, attribs);
-}