vl: add a matrix/convolution filter

Can be used for gaussian, mean, laplacian, emboss, sharpness...

Signed-off-by: Christian König <[email protected]>

3 files changed, 379 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/Makefile.sources b/src/gallium/auxiliary/Makefile.sources
index c69dbba812a..44cf2d326de 100644
--- a/src/gallium/auxiliary/Makefile.sources
+++ b/src/gallium/auxiliary/Makefile.sources
@@ -138,6 +138,7 @@ C_SOURCES := \
 	util/u_vbuf.c \
 	vl/vl_csc.c \
 	vl/vl_compositor.c \
+	vl/vl_matrix_filter.c \
 	vl/vl_median_filter.c \
 	vl/vl_decoder.c \
 	vl/vl_mpeg12_decoder.c \
diff --git a/src/gallium/auxiliary/vl/vl_matrix_filter.c b/src/gallium/auxiliary/vl/vl_matrix_filter.c
new file mode 100644
index 00000000000..43fb441f7b9
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_matrix_filter.c
@@ -0,0 +1,314 @@
+/**************************************************************************
+ *
+ * Copyright 2012 Christian König.
+ * 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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 <stdio.h>
+
+#include "pipe/p_context.h"
+
+#include "tgsi/tgsi_ureg.h"
+
+#include "util/u_draw.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+
+#include "vl_types.h"
+#include "vl_vertex_buffers.h"
+#include "vl_matrix_filter.h"
+
+enum VS_OUTPUT
+{
+   VS_O_VPOS,
+   VS_O_VTEX
+};
+
+static void *
+create_vert_shader(struct vl_matrix_filter *filter)
+{
+   struct ureg_program *shader;
+   struct ureg_src i_vpos;
+   struct ureg_dst o_vpos, o_vtex;
+
+   shader = ureg_create(TGSI_PROCESSOR_VERTEX);
+   if (!shader)
+      return NULL;
+
+   i_vpos = ureg_DECL_vs_input(shader, 0);
+   o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
+   o_vtex = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX);
+
+   ureg_MOV(shader, o_vpos, i_vpos);
+   ureg_MOV(shader, o_vtex, i_vpos);
+
+   ureg_END(shader);
+
+   return ureg_create_shader_and_destroy(shader, filter->pipe);
+}
+
+static inline bool
+is_vec_zero(struct vertex2f v)
+{
+   return v.x == 0.0f && v.y == 0.0f;
+}
+
+static void *
+create_frag_shader(struct vl_matrix_filter *filter, unsigned num_offsets,
+                   struct vertex2f *offsets, const float *matrix_values)
+{
+   struct ureg_program *shader;
+   struct ureg_src i_vtex;
+   struct ureg_src sampler;
+   struct ureg_dst *t_array = MALLOC(sizeof(struct ureg_dst) * num_offsets);
+   struct ureg_dst o_fragment;
+   bool first;
+   int i;
+
+   shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
+   if (!shader) {
+      FREE(t_array);
+      return NULL;
+   }
+
+   i_vtex = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX, TGSI_INTERPOLATE_LINEAR);
+   sampler = ureg_DECL_sampler(shader, 0);
+
+   for (i = 0; i < num_offsets; ++i)
+      if (matrix_values[i] != 0.0f)
+         t_array[i] = ureg_DECL_temporary(shader);
+
+   o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
+
+   /*
+    * t_array[0..*] = vtex + offset[0..*]
+    * t_array[0..*] = tex(t_array[0..*], sampler)
+    * o_fragment = sum(t_array[0..*] * matrix_values[0..*])
+    */
+
+   for (i = 0; i < num_offsets; ++i) {
+      if (matrix_values[i] != 0.0f && !is_vec_zero(offsets[i])) {
+         ureg_ADD(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_XY),
+                  i_vtex, ureg_imm2f(shader, offsets[i].x, offsets[i].y));
+         ureg_MOV(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_ZW),
+                  ureg_imm1f(shader, 0.0f));
+      }
+   }
+
+   for (i = 0; i < num_offsets; ++i) {
+      if (matrix_values[i] != 0.0f) {
+         struct ureg_src src = is_vec_zero(offsets[i]) ? i_vtex : ureg_src(t_array[i]);
+         ureg_TEX(shader, t_array[i], TGSI_TEXTURE_2D, src, sampler);
+      }
+   }
+
+   for (i = 0, first = true; i < num_offsets; ++i) {
+      if (matrix_values[i] != 0.0f) {
+         if (first) {
+            ureg_MUL(shader, o_fragment, ureg_src(t_array[i]),
+                     ureg_imm1f(shader, matrix_values[i]));
+            first = false;
+         } else
+            ureg_MAD(shader, o_fragment, ureg_src(t_array[i]),
+                     ureg_imm1f(shader, matrix_values[i]), ureg_src(o_fragment));
+      }
+   }
+   if (first)
+      ureg_MOV(shader, o_fragment, ureg_imm1f(shader, 0.0f));
+
+   ureg_END(shader);
+
+   FREE(t_array);
+   return ureg_create_shader_and_destroy(shader, filter->pipe);
+}
+
+bool
+vl_matrix_filter_init(struct vl_matrix_filter *filter, struct pipe_context *pipe,
+                      unsigned video_width, unsigned video_height,
+                      unsigned matrix_width, unsigned matrix_height,
+                      const float *matrix_values)
+{
+   struct pipe_rasterizer_state rs_state;
+   struct pipe_blend_state blend;
+   struct pipe_sampler_state sampler;
+   struct pipe_vertex_element ve;
+   struct vertex2f *offsets, v, sizes;
+   unsigned i, num_offsets = matrix_width * matrix_height;
+
+   assert(filter && pipe);
+   assert(video_width && video_height);
+   assert(matrix_width && matrix_height);
+
+   memset(filter, 0, sizeof(*filter));
+   filter->pipe = pipe;
+
+   memset(&rs_state, 0, sizeof(rs_state));
+   rs_state.gl_rasterization_rules = true;
+   rs_state.depth_clip = 1;
+   filter->rs_state = pipe->create_rasterizer_state(pipe, &rs_state);
+   if (!filter->rs_state)
+      goto error_rs_state;
+
+   memset(&blend, 0, sizeof blend);
+   blend.rt[0].rgb_func = PIPE_BLEND_ADD;
+   blend.rt[0].rgb_src_factor = PIPE_BLENDFACTOR_ONE;
+   blend.rt[0].rgb_dst_factor = PIPE_BLENDFACTOR_ONE;
+   blend.rt[0].alpha_func = PIPE_BLEND_ADD;
+   blend.rt[0].alpha_src_factor = PIPE_BLENDFACTOR_ONE;
+   blend.rt[0].alpha_dst_factor = PIPE_BLENDFACTOR_ONE;
+   blend.logicop_func = PIPE_LOGICOP_CLEAR;
+   blend.rt[0].colormask = PIPE_MASK_RGBA;
+   filter->blend = pipe->create_blend_state(pipe, &blend);
+   if (!filter->blend)
+      goto error_blend;
+
+   memset(&sampler, 0, sizeof(sampler));
+   sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+   sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+   sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+   sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
+   sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
+   sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
+   sampler.compare_mode = PIPE_TEX_COMPARE_NONE;
+   sampler.compare_func = PIPE_FUNC_ALWAYS;
+   sampler.normalized_coords = 1;
+   filter->sampler = pipe->create_sampler_state(pipe, &sampler);
+   if (!filter->sampler)
+      goto error_sampler;
+
+   filter->quad = vl_vb_upload_quads(pipe);
+   if(!filter->quad.buffer)
+      goto error_quad;
+
+   memset(&ve, 0, sizeof(ve));
+   ve.src_offset = 0;
+   ve.instance_divisor = 0;
+   ve.vertex_buffer_index = 0;
+   ve.src_format = PIPE_FORMAT_R32G32_FLOAT;
+   filter->ves = pipe->create_vertex_elements_state(pipe, 1, &ve);
+   if (!filter->ves)
+      goto error_ves;
+
+   offsets = MALLOC(sizeof(struct vertex2f) * num_offsets);
+   if (!offsets)
+      goto error_offsets;
+
+   sizes.x = (float)(matrix_width - 1) / 2.0f;
+   sizes.y = (float)(matrix_height - 1) / 2.0f;
+
+   for (v.x = -sizes.x, i = 0; v.x <= sizes.x; v.x += 1.0f)
+      for (v.y = -sizes.y; v.y <= sizes.y; v.y += 1.0f)
+         offsets[i++] = v;
+
+   for (i = 0; i < num_offsets; ++i) {
+      offsets[i].x /= video_width;
+      offsets[i].y /= video_height;
+   }
+
+   filter->vs = create_vert_shader(filter);
+   if (!filter->vs)
+      goto error_vs;
+
+   filter->fs = create_frag_shader(filter, num_offsets, offsets, matrix_values);
+   if (!filter->fs)
+      goto error_fs;
+
+   FREE(offsets);
+   return true;
+
+error_fs:
+   pipe->delete_vs_state(pipe, filter->vs);
+
+error_vs:
+   FREE(offsets);
+
+error_offsets:
+   pipe->delete_vertex_elements_state(pipe, filter->ves);
+
+error_ves:
+   pipe_resource_reference(&filter->quad.buffer, NULL);
+
+error_quad:
+   pipe->delete_sampler_state(pipe, filter->sampler);
+
+error_sampler:
+   pipe->delete_blend_state(pipe, filter->blend);
+
+error_blend:
+   pipe->delete_rasterizer_state(pipe, filter->rs_state);
+
+error_rs_state:
+   return false;
+}
+
+void
+vl_matrix_filter_cleanup(struct vl_matrix_filter *filter)
+{
+   assert(filter);
+
+   filter->pipe->delete_sampler_state(filter->pipe, filter->sampler);
+   filter->pipe->delete_blend_state(filter->pipe, filter->blend);
+   filter->pipe->delete_rasterizer_state(filter->pipe, filter->rs_state);
+   filter->pipe->delete_vertex_elements_state(filter->pipe, filter->ves);
+   pipe_resource_reference(&filter->quad.buffer, NULL);
+
+   filter->pipe->delete_vs_state(filter->pipe, filter->vs);
+   filter->pipe->delete_fs_state(filter->pipe, filter->fs);
+}
+
+void
+vl_matrix_filter_render(struct vl_matrix_filter *filter,
+                        struct pipe_sampler_view *src,
+                        struct pipe_surface *dst)
+{
+   struct pipe_viewport_state viewport;
+   struct pipe_framebuffer_state fb_state;
+
+   assert(filter && src && dst);
+
+   memset(&viewport, 0, sizeof(viewport));
+   viewport.scale[0] = dst->width;
+   viewport.scale[1] = dst->height;
+   viewport.scale[2] = 1;
+   viewport.scale[3] = 1;
+
+   memset(&fb_state, 0, sizeof(fb_state));
+   fb_state.width = dst->width;
+   fb_state.height = dst->height;
+   fb_state.nr_cbufs = 1;
+   fb_state.cbufs[0] = dst;
+
+   filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state);
+   filter->pipe->bind_blend_state(filter->pipe, filter->blend);
+   filter->pipe->bind_fragment_sampler_states(filter->pipe, 1, &filter->sampler);
+   filter->pipe->set_fragment_sampler_views(filter->pipe, 1, &src);
+   filter->pipe->bind_vs_state(filter->pipe, filter->vs);
+   filter->pipe->bind_fs_state(filter->pipe, filter->fs);
+   filter->pipe->set_framebuffer_state(filter->pipe, &fb_state);
+   filter->pipe->set_viewport_state(filter->pipe, &viewport);
+   filter->pipe->set_vertex_buffers(filter->pipe, 1, &filter->quad);
+   filter->pipe->bind_vertex_elements_state(filter->pipe, filter->ves);
+
+   util_draw_arrays(filter->pipe, PIPE_PRIM_QUADS, 0, 4);
+}
diff --git a/src/gallium/auxiliary/vl/vl_matrix_filter.h b/src/gallium/auxiliary/vl/vl_matrix_filter.h
new file mode 100644
index 00000000000..d275e7fe07d
--- /dev/null
+++ b/src/gallium/auxiliary/vl/vl_matrix_filter.h
@@ -0,0 +1,64 @@
+/**************************************************************************
+ *
+ * Copyright 2012 Christian König.
+ * 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 TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+/* implementation of all matrix based filters like
+   gaussian, mean, laplacian, emboss, sharpness etc.. */
+
+#ifndef vl_matrix_filter_h
+#define vl_matrix_filter_h
+
+#include "pipe/p_state.h"
+
+struct vl_matrix_filter
+{
+   struct pipe_context *pipe;
+   struct pipe_vertex_buffer quad;
+
+   void *rs_state;
+   void *blend;
+   void *sampler;
+   void *ves;
+   void *vs, *fs;
+};
+
+bool
+vl_matrix_filter_init(struct vl_matrix_filter *filter, struct pipe_context *pipe,
+                      unsigned video_width, unsigned video_height,
+                      unsigned matrix_width, unsigned matrix_height,
+                      const float *matrix_values);
+
+void
+vl_matrix_filter_cleanup(struct vl_matrix_filter *filter);
+
+
+void
+vl_matrix_filter_render(struct vl_matrix_filter *filter,
+                        struct pipe_sampler_view *src,
+                        struct pipe_surface *dst);
+
+
+#endif /* vl_matrix_filter_h */