pp/main queue: Add pp_run.c

Signed-off-by: Lauri Kasanen <cand@gmx.com>
Signed-off-by: Brian Paul <brianp@vmware.com>

src/gallium/auxiliary/postprocess/pp_run.c

@@ -0,0 +1,188 @@
+/**************************************************************************
+ *
+ * Copyright 2011 Lauri Kasanen
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ **************************************************************************/
+
+#include "postprocess.h"
+
+#include "postprocess/pp_filters.h"
+#include "util/u_blit.h"
+#include "util/u_inlines.h"
+#include "util/u_sampler.h"
+
+/**
+*	Main run function of the PP queue. Called on swapbuffers/flush.
+*
+*	Runs all requested filters in order and handles shuffling the temp
+*	buffers in between.
+*/
+void
+pp_run(struct pp_queue_t *ppq, struct pipe_resource *in,
+       struct pipe_resource *out, struct pipe_resource *indepth)
+{
+
+   unsigned int i;
+
+   if (in->width0 != ppq->p->framebuffer.width ||
+       in->height0 != ppq->p->framebuffer.height) {
+      pp_debug("Resizing the temp pp buffers\n");
+      pp_free_fbos(ppq);
+      pp_init_fbos(ppq, in->width0, in->height0, indepth);
+   }
+
+   if (in == out && ppq->n_filters == 1) {
+      /* Make a copy of in to tmp[0] in this case. */
+      unsigned int w = ppq->p->framebuffer.width;
+      unsigned int h = ppq->p->framebuffer.height;
+
+      util_blit_pixels(ppq->p->blitctx, in, 0, 0, 0,
+                       w, h, 0, ppq->tmps[0],
+                       0, 0, w, h, 0, PIPE_TEX_MIPFILTER_NEAREST);
+
+      in = ppq->tmp[0];
+   }
+
+   switch (ppq->n_filters) {
+   case 1:                     /* No temp buf */
+      ppq->pp_queue[0] (ppq, in, out, 0);
+      break;
+   case 2:                     /* One temp buf */
+
+      ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
+      ppq->pp_queue[1] (ppq, ppq->tmp[0], out, 1);
+
+      break;
+   default:                    /* Two temp bufs */
+      ppq->pp_queue[0] (ppq, in, ppq->tmp[0], 0);
+
+      for (i = 1; i < (ppq->n_filters - 1); i++) {
+         if (i % 2 == 0)
+            ppq->pp_queue[i] (ppq, ppq->tmp[1], ppq->tmp[0], i);
+
+         else
+            ppq->pp_queue[i] (ppq, ppq->tmp[0], ppq->tmp[1], i);
+      }
+
+      if (i % 2 == 0)
+         ppq->pp_queue[i] (ppq, ppq->tmp[1], out, i);
+
+      else
+         ppq->pp_queue[i] (ppq, ppq->tmp[0], out, i);
+
+      break;
+   }
+}
+
+
+/* Utility functions for the filters. You're not forced to use these if */
+/* your filter is more complicated. */
+
+/** Setup this resource as the filter input. */
+void
+pp_filter_setup_in(struct program *p, struct pipe_resource *in)
+{
+   struct pipe_sampler_view v_tmp;
+   u_sampler_view_default_template(&v_tmp, in, in->format);
+   p->view = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
+}
+
+/** Setup this resource as the filter output. */
+void
+pp_filter_setup_out(struct program *p, struct pipe_resource *out)
+{
+   p->surf.format = out->format;
+   p->surf.usage = PIPE_BIND_RENDER_TARGET;
+
+   p->framebuffer.cbufs[0] = p->pipe->create_surface(p->pipe, out, &p->surf);
+}
+
+/** Clean up the input and output set with the above. */
+void
+pp_filter_end_pass(struct program *p)
+{
+   pipe_surface_reference(&p->framebuffer.cbufs[0], NULL);
+   pipe_sampler_view_reference(&p->view, NULL);
+}
+
+/**
+*	Convert the TGSI assembly to a runnable shader.
+*
+* We need not care about geometry shaders. All we have is screen quads.
+*/
+void *
+pp_tgsi_to_state(struct pipe_context *pipe, const char *text, bool isvs,
+                 const char *name)
+{
+   struct pipe_shader_state state;
+   struct tgsi_token tokens[PP_MAX_TOKENS];
+
+   if (tgsi_text_translate(text, tokens, Elements(tokens)) == FALSE) {
+      pp_debug("Failed to translate %s\n", name);
+      return NULL;
+   }
+
+   state.tokens = tokens;
+
+   if (isvs)
+      return pipe->create_vs_state(pipe, &state);
+   else
+      return pipe->create_fs_state(pipe, &state);
+}
+
+/** Setup misc state for the filter. */
+void
+pp_filter_misc_state(struct program *p)
+{
+   cso_set_blend(p->cso, &p->blend);
+   cso_set_depth_stencil_alpha(p->cso, &p->depthstencil);
+   cso_set_rasterizer(p->cso, &p->rasterizer);
+   cso_set_viewport(p->cso, &p->viewport);
+
+   cso_set_vertex_elements(p->cso, 2, p->velem);
+}
+
+/** Draw with the filter to the set output. */
+void
+pp_filter_draw(struct program *p)
+{
+   util_draw_vertex_buffer(p->pipe, p->cso, p->vbuf, 0,
+                           PIPE_PRIM_QUADS, 4, 2);
+   p->pipe->flush(p->pipe, NULL);
+}
+
+/** Set the framebuffer as active. */
+void
+pp_filter_set_fb(struct program *p)
+{
+   cso_set_framebuffer(p->cso, &p->framebuffer);
+}
+
+/** Set the framebuffer as active and clear it. */
+void
+pp_filter_set_clear_fb(struct program *p)
+{
+   cso_set_framebuffer(p->cso, &p->framebuffer);
+   p->pipe->clear(p->pipe, PIPE_CLEAR_COLOR, p->clear_color, 0, 0);
+}