From d7db6343dd330cb8eb70e65190adb24dd350facc Mon Sep 17 00:00:00 2001 From: Christian König Date: Wed, 8 Feb 2012 18:02:11 +0100 Subject: vl: add a matrix/convolution filter MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Can be used for gaussian, mean, laplacian, emboss, sharpness... Signed-off-by: Christian König --- src/gallium/auxiliary/Makefile.sources | 1 + src/gallium/auxiliary/vl/vl_matrix_filter.c | 314 ++++++++++++++++++++++++++++ src/gallium/auxiliary/vl/vl_matrix_filter.h | 64 ++++++ 3 files changed, 379 insertions(+) create mode 100644 src/gallium/auxiliary/vl/vl_matrix_filter.c create mode 100644 src/gallium/auxiliary/vl/vl_matrix_filter.h 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 + +#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 */ -- cgit v1.2.3