[vulkan] Support disabling pipelines

This is useful for selecting post-processing pipelines at run-time.

include/QF/Vulkan/render.h

@@ -166,6 +166,7 @@ typedef struct qfv_attachmentsetinfo_s {
 typedef struct qfv_pipelineinfo_s {
 	vec4f_t     color;
 	const char *name;
+	bool        disabled;
 	uint32_t    num_tasks;
 	qfv_taskinfo_t *tasks;
 
@@ -309,6 +310,7 @@ typedef struct qfv_label_s {
 
 typedef struct qfv_pipeline_s {
 	qfv_label_t label;
+	bool        disabled;
 	VkPipelineBindPoint bindPoint;
 	vec4u_t     dispatch;
 	VkPipeline  pipeline;

libs/video/renderer/vulkan/render.c

@@ -81,6 +81,9 @@ run_tasks (uint32_t task_count, qfv_taskinfo_t *tasks, qfv_taskctx_t *ctx)
 static void
 run_pipeline (qfv_pipeline_t *pipeline, qfv_taskctx_t *taskctx)
 {
+	if (pipeline->disabled) {
+		return;
+	}
 	qfv_device_t *device = taskctx->ctx->device;
 	qfv_devfuncs_t *dfunc = device->funcs;
 	auto cmd = taskctx->cmd;
@@ -158,6 +161,9 @@ static void
 run_compute_pipeline (qfv_pipeline_t *pipeline, VkCommandBuffer cmd,
 					  vulkan_ctx_t *ctx)
 {
+	if (pipeline->disabled) {
+		return;
+	}
 	qfv_device_t *device = ctx->device;
 	qfv_devfuncs_t *dfunc = device->funcs;
 	dfunc->vkCmdBindPipeline (cmd, pipeline->bindPoint, pipeline->pipeline);

libs/video/renderer/vulkan/render_load.c

@@ -753,6 +753,7 @@ init_pipeline (qfv_pipeline_t *pl, qfv_pipelineinfo_t *plinfo,
 			.name = plinfo->name,
 			.color = plinfo->color,
 		},
+		.disabled = plinfo->disabled,
 		.bindPoint = is_compute ? VK_PIPELINE_BIND_POINT_COMPUTE
 								: VK_PIPELINE_BIND_POINT_GRAPHICS,
 		.pipeline = is_compute ? s->ptr.cpl[s->inds.num_comp_pipelines]

libs/video/renderer/vulkan/vkparse.plist

@@ -327,6 +327,7 @@ parse = {
 			type = string;
 			string = name;
 		};
+		disabled = auto;
 		tasks = {
 			type = (array, qfv_taskinfo_t);
 			size = num_tasks;