pp: Add Jimenez' MLAA

Signed-off-by: Lauri Kasanen <[email protected]>
Signed-off-by: Brian Paul <[email protected]>

1 files changed, 304 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/postprocess/pp_mlaa.c b/src/gallium/auxiliary/postprocess/pp_mlaa.c
new file mode 100644
index 00000000000..476502fca93
--- /dev/null
+++ b/src/gallium/auxiliary/postprocess/pp_mlaa.c
@@ -0,0 +1,304 @@
+/**
+ * Copyright (C) 2010 Jorge Jimenez ([email protected])
+ * Copyright (C) 2010 Belen Masia ([email protected])
+ * Copyright (C) 2010 Jose I. Echevarria ([email protected])
+ * Copyright (C) 2010 Fernando Navarro ([email protected])
+ * Copyright (C) 2010 Diego Gutierrez ([email protected])
+ * Copyright (C) 2011 Lauri Kasanen ([email protected])
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice,
+ *       this list of conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the following statement:
+ *
+ *       "Uses Jimenez's MLAA. Copyright (C) 2010 by Jorge Jimenez, Belen Masia,
+ *        Jose I. Echevarria, Fernando Navarro and Diego Gutierrez."
+ *
+ *       Only for use in the Mesa project, this point 2 is filled by naming the
+ *       technique Jimenez's MLAA in the Mesa config options.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS
+ * IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are
+ * those of the authors and should not be interpreted as representing official
+ * policies, either expressed or implied, of the copyright holders.
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include "postprocess/postprocess.h"
+#include "postprocess/pp_mlaa.h"
+#include "postprocess/pp_filters.h"
+#include "util/u_blit.h"
+#include "util/u_box.h"
+#include "util/u_sampler.h"
+#include "util/u_inlines.h"
+#include "pipe/p_screen.h"
+
+#define IMM_SPACE 80
+
+static float constants[] = { 1, 1, 0, 0 };
+static unsigned int dimensions[2] = { 0, 0 };
+
+static struct pipe_resource *constbuf, *areamaptex;
+
+/** Upload the constants. */
+static void
+up_consts(struct pipe_context *pipe)
+{
+   struct pipe_box box;
+
+   u_box_2d(0, 0, sizeof(constants), 1, &box);
+   pipe->transfer_inline_write(pipe, constbuf, 0, PIPE_TRANSFER_WRITE,
+                               &box, constants, sizeof(constants),
+                               sizeof(constants));
+}
+
+/** Run function of the MLAA filter. */
+static void
+pp_jimenezmlaa_run(struct pp_queue_t *ppq, struct pipe_resource *in,
+                   struct pipe_resource *out, unsigned int n, bool iscolor)
+{
+
+   struct program *p = ppq->p;
+
+   struct pipe_depth_stencil_alpha_state mstencil;
+   struct pipe_sampler_view v_tmp, *arr[3];
+
+   unsigned int w = p->framebuffer.width;
+   unsigned int h = p->framebuffer.height;
+
+   const struct pipe_stencil_ref ref = { {1} };
+   memset(&mstencil, 0, sizeof(mstencil));
+   cso_set_stencil_ref(p->cso, &ref);
+
+   /* Init the pixel size constant */
+   if (dimensions[0] != p->framebuffer.width ||
+       dimensions[1] != p->framebuffer.height) {
+      constants[0] = 1.0 / p->framebuffer.width;
+      constants[1] = 1.0 / p->framebuffer.height;
+
+      up_consts(p->pipe);
+      dimensions[0] = p->framebuffer.width;
+      dimensions[1] = p->framebuffer.height;
+   }
+
+   p->pipe->set_constant_buffer(p->pipe, PIPE_SHADER_VERTEX, 0, constbuf);
+   p->pipe->set_constant_buffer(p->pipe, PIPE_SHADER_FRAGMENT, 0, constbuf);
+
+   mstencil.stencil[0].enabled = 1;
+   mstencil.stencil[0].valuemask = mstencil.stencil[0].writemask = ~0;
+   mstencil.stencil[0].func = PIPE_FUNC_ALWAYS;
+   mstencil.stencil[0].fail_op = PIPE_STENCIL_OP_KEEP;
+   mstencil.stencil[0].zfail_op = PIPE_STENCIL_OP_KEEP;
+   mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
+
+   p->framebuffer.zsbuf = ppq->stencils;
+
+   /* First pass: depth edge detection */
+   if (iscolor)
+      pp_filter_setup_in(p, in);
+   else
+      pp_filter_setup_in(p, ppq->depth);
+
+   pp_filter_setup_out(p, ppq->inner_tmp[0]);
+
+   pp_filter_set_fb(p);
+   pp_filter_misc_state(p);
+   cso_set_depth_stencil_alpha(p->cso, &mstencil);
+   p->pipe->clear(p->pipe, PIPE_CLEAR_STENCIL | PIPE_CLEAR_COLOR,
+                  p->clear_color, 0, 0);
+
+   cso_single_sampler(p->cso, 0, &p->sampler_point);
+   cso_single_sampler_done(p->cso);
+   cso_set_fragment_sampler_views(p->cso, 1, &p->view);
+
+   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
+   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][2]);
+
+   pp_filter_draw(p);
+   pp_filter_end_pass(p);
+
+
+   /* Second pass: blend weights */
+   /* Sampler order: areamap, edgesmap, edgesmapL (reversed, thx compiler) */
+   mstencil.stencil[0].func = PIPE_FUNC_EQUAL;
+   mstencil.stencil[0].zpass_op = PIPE_STENCIL_OP_KEEP;
+   cso_set_depth_stencil_alpha(p->cso, &mstencil);
+
+   pp_filter_setup_in(p, areamaptex);
+   pp_filter_setup_out(p, ppq->inner_tmp[1]);
+
+   u_sampler_view_default_template(&v_tmp, ppq->inner_tmp[0],
+                                   ppq->inner_tmp[0]->format);
+   arr[1] = arr[2] = p->pipe->create_sampler_view(p->pipe,
+                                                  ppq->inner_tmp[0], &v_tmp);
+
+   pp_filter_set_clear_fb(p);
+
+   cso_single_sampler(p->cso, 0, &p->sampler_point);
+   cso_single_sampler(p->cso, 1, &p->sampler_point);
+   cso_single_sampler(p->cso, 2, &p->sampler);
+   cso_single_sampler_done(p->cso);
+
+   arr[0] = p->view;
+   cso_set_fragment_sampler_views(p->cso, 3, arr);
+
+   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][0]);    /* passvs */
+   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][3]);
+
+   pp_filter_draw(p);
+   pp_filter_end_pass(p);
+   pipe_sampler_view_reference(&arr[1], NULL);
+
+
+   /* Third pass: smoothed edges */
+   /* Sampler order: colormap, blendmap (wtf compiler) */
+   pp_filter_setup_in(p, ppq->inner_tmp[1]);
+   pp_filter_setup_out(p, out);
+
+   pp_filter_set_fb(p);
+
+   /* Blit the input to the output */
+   util_blit_pixels(p->blitctx, in, 0, 0, 0,
+                    w, h, 0, p->framebuffer.cbufs[0],
+                    0, 0, w, h, 0, PIPE_TEX_MIPFILTER_NEAREST);
+
+   u_sampler_view_default_template(&v_tmp, in, in->format);
+   arr[0] = p->pipe->create_sampler_view(p->pipe, in, &v_tmp);
+
+   cso_single_sampler(p->cso, 0, &p->sampler_point);
+   cso_single_sampler(p->cso, 1, &p->sampler_point);
+   cso_single_sampler_done(p->cso);
+
+   arr[1] = p->view;
+   cso_set_fragment_sampler_views(p->cso, 2, arr);
+
+   cso_set_vertex_shader_handle(p->cso, ppq->shaders[n][1]);    /* offsetvs */
+   cso_set_fragment_shader_handle(p->cso, ppq->shaders[n][4]);
+
+   p->blend.rt[0].blend_enable = 1;
+   cso_set_blend(p->cso, &p->blend);
+
+   pp_filter_draw(p);
+   pp_filter_end_pass(p);
+   pipe_sampler_view_reference(&arr[0], NULL);
+
+   p->blend.rt[0].blend_enable = 0;
+   p->framebuffer.zsbuf = NULL;
+}
+
+/** The init function of the MLAA filter. */
+static void
+pp_jimenezmlaa_init_run(struct pp_queue_t *ppq, unsigned int n,
+                        unsigned int val, bool iscolor)
+{
+
+   struct pipe_box box;
+   struct pipe_resource res;
+
+   char *tmp_text = calloc(sizeof(blend2fs_1) + sizeof(blend2fs_2) +
+                           IMM_SPACE, sizeof(char));
+
+   constbuf = pipe_buffer_create(ppq->p->screen, PIPE_BIND_CONSTANT_BUFFER,
+                                 PIPE_USAGE_STATIC, sizeof(constants));
+   if (!constbuf) {
+      pp_debug("Failed to allocate constant buffer\n");
+      return;
+   }
+
+
+   pp_debug("mlaa: using %u max search steps\n", val);
+
+   if (!tmp_text) {
+      pp_debug("Failed to allocate shader space\n");
+      return;
+   }
+   sprintf(tmp_text, "%s"
+           "IMM FLT32 {    %.8f,     0.0000,     0.0000,     0.0000}\n"
+           "%s\n", blend2fs_1, (float) val, blend2fs_2);
+
+   memset(&res, 0, sizeof(res));
+
+   res.target = PIPE_TEXTURE_2D;
+   res.format = PIPE_FORMAT_R8G8_UNORM;
+   res.width0 = res.height0 = 165;
+   res.bind = PIPE_BIND_SAMPLER_VIEW;
+   res.usage = PIPE_USAGE_STATIC;
+   res.depth0 = res.array_size = res.nr_samples = 1;
+
+   if (!ppq->p->screen->is_format_supported(ppq->p->screen, res.format,
+                                            res.target, 1, res.bind))
+      pp_debug("Areamap format not supported\n");
+
+   areamaptex = ppq->p->screen->resource_create(ppq->p->screen, &res);
+   u_box_2d(0, 0, 165, 165, &box);
+
+   ppq->p->pipe->transfer_inline_write(ppq->p->pipe, areamaptex, 0,
+                                       PIPE_TRANSFER_WRITE, &box,
+                                       areamap, 165 * 2, sizeof(areamap));
+
+
+
+   ppq->shaders[n][1] = pp_tgsi_to_state(ppq->p->pipe, offsetvs, true,
+                                         "offsetvs");
+   if (iscolor)
+      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, color1fs,
+                                            false, "color1fs");
+   else
+      ppq->shaders[n][2] = pp_tgsi_to_state(ppq->p->pipe, depth1fs,
+                                            false, "depth1fs");
+   ppq->shaders[n][3] = pp_tgsi_to_state(ppq->p->pipe, tmp_text, false,
+                                         "blend2fs");
+   ppq->shaders[n][4] = pp_tgsi_to_state(ppq->p->pipe, neigh3fs, false,
+                                         "neigh3fs");
+
+   free(tmp_text);
+}
+
+/** Short wrapper to init the depth version. */
+void
+pp_jimenezmlaa_init(struct pp_queue_t *ppq, unsigned int n, unsigned int val)
+{
+
+   pp_jimenezmlaa_init_run(ppq, n, val, false);
+}
+
+/** Short wrapper to init the color version. */
+void
+pp_jimenezmlaa_init_color(struct pp_queue_t *ppq, unsigned int n,
+                          unsigned int val)
+{
+
+   pp_jimenezmlaa_init_run(ppq, n, val, true);
+}
+
+/** Short wrapper to run the depth version. */
+void
+pp_jimenezmlaa(struct pp_queue_t *ppq, struct pipe_resource *in,
+               struct pipe_resource *out, unsigned int n)
+{
+   pp_jimenezmlaa_run(ppq, in, out, n, false);
+}
+
+/** Short wrapper to run the color version. */
+void
+pp_jimenezmlaa_color(struct pp_queue_t *ppq, struct pipe_resource *in,
+                     struct pipe_resource *out, unsigned int n)
+{
+   pp_jimenezmlaa_run(ppq, in, out, n, true);
+}