linux-dmabuf: Support multi plane formats like NV12

render/egl.c

@@ -325,15 +325,6 @@ bool wlr_egl_swap_buffers(struct wlr_egl *egl, EGLSurface surface,
 
 EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
 		struct wlr_dmabuf_buffer_attribs *attributes) {
-	int atti = 0;
-	EGLint attribs[20];
-	attribs[atti++] = EGL_WIDTH;
-	attribs[atti++] = attributes->width;
-	attribs[atti++] = EGL_HEIGHT;
-	attribs[atti++] = attributes->height;
-	attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
-	attribs[atti++] = attributes->format;
-
 	bool has_modifier = false;
 	if (attributes->modifier[0] != DRM_FORMAT_MOD_INVALID) {
 		if (!egl->egl_exts.dmabuf_import_modifiers) {
@@ -342,25 +333,66 @@ EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
 		has_modifier = true;
 	}
 
-	/* TODO: YUV planes have up four planes but we only support a
+	unsigned int atti = 0;
-	   single EGLImage for now */
+	EGLint attribs[50];
-	if (attributes->n_planes > 1) {
+	attribs[atti++] = EGL_WIDTH;
-		return NULL;
+	attribs[atti++] = attributes->width;
-	}
+	attribs[atti++] = EGL_HEIGHT;
+	attribs[atti++] = attributes->height;
+	attribs[atti++] = EGL_LINUX_DRM_FOURCC_EXT;
+	attribs[atti++] = attributes->format;
 
-	attribs[atti++] = EGL_DMA_BUF_PLANE0_FD_EXT;
+	struct {
-	attribs[atti++] = attributes->fd[0];
+		EGLint fd;
-	attribs[atti++] = EGL_DMA_BUF_PLANE0_OFFSET_EXT;
+		EGLint offset;
-	attribs[atti++] = attributes->offset[0];
+		EGLint pitch;
-	attribs[atti++] = EGL_DMA_BUF_PLANE0_PITCH_EXT;
+		EGLint mod_lo;
-	attribs[atti++] = attributes->stride[0];
+		EGLint mod_hi;
+	} attr_names[WLR_LINUX_DMABUF_MAX_PLANES] = {
+		{
+			EGL_DMA_BUF_PLANE0_FD_EXT,
+			EGL_DMA_BUF_PLANE0_OFFSET_EXT,
+			EGL_DMA_BUF_PLANE0_PITCH_EXT,
+			EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT,
+			EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT
+		}, {
+			EGL_DMA_BUF_PLANE1_FD_EXT,
+			EGL_DMA_BUF_PLANE1_OFFSET_EXT,
+			EGL_DMA_BUF_PLANE1_PITCH_EXT,
+			EGL_DMA_BUF_PLANE1_MODIFIER_LO_EXT,
+			EGL_DMA_BUF_PLANE1_MODIFIER_HI_EXT
+		}, {
+			EGL_DMA_BUF_PLANE2_FD_EXT,
+			EGL_DMA_BUF_PLANE2_OFFSET_EXT,
+			EGL_DMA_BUF_PLANE2_PITCH_EXT,
+			EGL_DMA_BUF_PLANE2_MODIFIER_LO_EXT,
+			EGL_DMA_BUF_PLANE2_MODIFIER_HI_EXT
+		}, {
+			EGL_DMA_BUF_PLANE3_FD_EXT,
+			EGL_DMA_BUF_PLANE3_OFFSET_EXT,
+			EGL_DMA_BUF_PLANE3_PITCH_EXT,
+			EGL_DMA_BUF_PLANE3_MODIFIER_LO_EXT,
+			EGL_DMA_BUF_PLANE3_MODIFIER_HI_EXT
+		}
+	};
+
+	for (int i=0; i < attributes->n_planes; i++) {
+		attribs[atti++] = attr_names[i].fd;
+		attribs[atti++] = attributes->fd[i];
+		attribs[atti++] = attr_names[i].offset;
+		attribs[atti++] = attributes->offset[i];
+		attribs[atti++] = attr_names[i].pitch;
+		attribs[atti++] = attributes->stride[i];
 		if (has_modifier) {
-		attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_LO_EXT;
+			attribs[atti++] = attr_names[i].mod_lo;
-		attribs[atti++] = attributes->modifier[0] & 0xFFFFFFFF;
+			attribs[atti++] = attributes->modifier[i] & 0xFFFFFFFF;
-		attribs[atti++] = EGL_DMA_BUF_PLANE0_MODIFIER_HI_EXT;
+			attribs[atti++] = attr_names[i].mod_hi;
-		attribs[atti++] = attributes->modifier[0] >> 32;
+			attribs[atti++] = attributes->modifier[i] >> 32;
+		}
 	}
 	attribs[atti++] = EGL_NONE;
+	assert(atti < sizeof(attribs)/sizeof(attribs[0]));
+
 	return eglCreateImageKHR(egl->display, EGL_NO_CONTEXT,
 		EGL_LINUX_DMA_BUF_EXT, NULL, attribs);
 }
@@ -371,7 +403,8 @@ EGLImage wlr_egl_create_image_from_dmabuf(struct wlr_egl *egl,
 bool wlr_egl_check_import_dmabuf(struct wlr_egl *egl,
 		struct wlr_dmabuf_buffer *dmabuf) {
 	switch (dmabuf->attributes.format & ~DRM_FORMAT_BIG_ENDIAN) {
-		/* YUV based formats not yet supported */
+		/* TODO: YUV based formats not yet supported, require multiple
+		 * wlr_create_image_from_dmabuf */
 	case WL_SHM_FORMAT_YUYV:
 	case WL_SHM_FORMAT_YVYU:
 	case WL_SHM_FORMAT_UYVY:

render/gles2/texture.c

@@ -275,9 +275,15 @@ static bool gles2_texture_upload_dmabuf(struct wlr_texture *wlr_texture,
 		wlr_texture->inverted_y = true;
 	}
 
-	GLenum target = GL_TEXTURE_2D;
+	GLenum target;
-	const struct gles2_pixel_format *pf =
+	const struct gles2_pixel_format *pf;
-		gles2_format_from_wl(WL_SHM_FORMAT_ARGB8888);
+	if (dmabuf->attributes.n_planes > 1) {
+		target = GL_TEXTURE_EXTERNAL_OES;
+		pf = &external_pixel_format;
+	} else {
+		target = GL_TEXTURE_2D;
+		pf = gles2_format_from_wl(WL_SHM_FORMAT_ARGB8888);
+	}
 	GLES2_DEBUG_PUSH;
 	gles2_texture_ensure(tex, target);
 	glBindTexture(target, tex->tex_id);

types/wlr_linux_dmabuf.c

@@ -139,19 +139,18 @@ static void params_create_common(struct wl_client *client,
 		goto err_out;
 	}
 
-	/* TODO: support more planes */
-	if (buffer->attributes.n_planes != 1) {
-		wl_resource_post_error(params_resource,
-			ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
-			"only single plane buffers supported not %d",
-			buffer->attributes.n_planes);
-		goto err_out;
-	}
-
 	if (buffer->attributes.fd[0] == -1) {
 		wl_resource_post_error(params_resource,
 			ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
-			"no dmabuf has been added for plane");
+			"no dmabuf has been added for plane 0");
+		goto err_out;
+	}
+
+	if ((buffer->attributes.fd[3] >= 0 || buffer->attributes.fd[2] >= 0) &&
+			(buffer->attributes.fd[2] == -1 || buffer->attributes.fd[1] == -1)) {
+		wl_resource_post_error (params_resource,
+			ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_INCOMPLETE,
+			"gap in dmabuf planes");
 		goto err_out;
 	}
 
@@ -167,43 +166,48 @@ static void params_create_common(struct wl_client *client,
 		goto err_out;
 	}
 
-	if ((uint64_t)buffer->attributes.offset[0] + buffer->attributes.stride[0] > UINT32_MAX) {
+	for (int i = 0; i < buffer->attributes.n_planes; i++) {
+		if ((uint64_t)buffer->attributes.offset[i]
+				+ buffer->attributes.stride[i] > UINT32_MAX) {
 			wl_resource_post_error(params_resource,
 				ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
-			"size overflow for plane");
+				"size overflow for plane %d", i);
 			goto err_out;
 		}
 
-	if ((uint64_t)buffer->attributes.offset[0] +
+		if ((uint64_t)buffer->attributes.offset[i]
-			(uint64_t)buffer->attributes.stride[0] * height > UINT32_MAX) {
+				+ (uint64_t)buffer->attributes.stride[i] * height > UINT32_MAX) {
 			wl_resource_post_error(params_resource,
 				ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
-			"size overflow for plane");
+				"size overflow for plane %d", i);
 			goto err_out;
 		}
 
-	off_t size = lseek(buffer->attributes.fd[0], 0, SEEK_END);
+		off_t size = lseek(buffer->attributes.fd[i], 0, SEEK_END);
-	if (size != -1) { /* Skip checks if kernel does no support seek on buffer */
+		if (size == -1) { /* Skip checks if kernel does no support seek on buffer */
-		if (buffer->attributes.offset[0] >= size) {
+			continue;
+		}
+		if (buffer->attributes.offset[i] >= size) {
 			wl_resource_post_error(params_resource,
 				ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
-				"invalid offset %i for plane",
+				"invalid offset %i for plane %d",
-				buffer->attributes.offset[0]);
+				buffer->attributes.offset[i], i);
 			goto err_out;
 		}
 
-		if (buffer->attributes.offset[0] + buffer->attributes.stride[0] > size) {
+		if (buffer->attributes.offset[i] + buffer->attributes.stride[i]	> size) {
 			wl_resource_post_error(params_resource,
 				ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
-				"invalid stride %i for plane",
+				"invalid stride %i for plane %d",
-				buffer->attributes.stride[0]);
+				buffer->attributes.stride[i], i);
 			goto err_out;
 		}
 
-		if (buffer->attributes.offset[0] + buffer->attributes.stride[0] * height > size) {
+		if (i == 0 && /* planes > 0 might be subsampled according to fourcc format */
+			buffer->attributes.offset[i] + buffer->attributes.stride[i] * height > size) {
 			wl_resource_post_error(params_resource,
 				ZWP_LINUX_BUFFER_PARAMS_V1_ERROR_OUT_OF_BOUNDS,
-				"invalid buffer stride or height for plane");
+				"invalid buffer stride or height for plane %d", i);
 			goto err_out;
 		}
 	}