From 872dd9ad154b0ef9c91486640f73232a60074292 Mon Sep 17 00:00:00 2001 From: Nayan Deshmukh Date: Wed, 29 Jun 2016 18:54:00 +0530 Subject: [PATCH] vl: add a bicubic interpolation filter(v5) MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This is a shader based bicubic interpolater which uses cubic Hermite spline algorithm. v2: set dst_area and dst_clip during scaling (Christian) v3: clear the render target before rendering v4: intialize offsets while initializing shaders use a constant buffer to send dst_size to frag shader small changes to reduce calculation in shader v5: send half pixel offset instead of sending dst_size Signed-off-by: Nayan Deshmukh Reviewed-by: Christian König --- src/gallium/auxiliary/Makefile.sources | 2 + src/gallium/auxiliary/vl/vl_bicubic_filter.c | 463 +++++++++++++++++++ src/gallium/auxiliary/vl/vl_bicubic_filter.h | 63 +++ 3 files changed, 528 insertions(+) create mode 100644 src/gallium/auxiliary/vl/vl_bicubic_filter.c create mode 100644 src/gallium/auxiliary/vl/vl_bicubic_filter.h diff --git a/src/gallium/auxiliary/Makefile.sources b/src/gallium/auxiliary/Makefile.sources index ab58358a1a3..e0311bfc3a1 100644 --- a/src/gallium/auxiliary/Makefile.sources +++ b/src/gallium/auxiliary/Makefile.sources @@ -317,6 +317,8 @@ NIR_SOURCES := \ nir/tgsi_to_nir.h VL_SOURCES := \ + vl/vl_bicubic_filter.c \ + vl/vl_bicubic_filter.h \ vl/vl_compositor.c \ vl/vl_compositor.h \ vl/vl_csc.c \ diff --git a/src/gallium/auxiliary/vl/vl_bicubic_filter.c b/src/gallium/auxiliary/vl/vl_bicubic_filter.c new file mode 100644 index 00000000000..ca9f8820e3b --- /dev/null +++ b/src/gallium/auxiliary/vl/vl_bicubic_filter.c @@ -0,0 +1,463 @@ +/************************************************************************** + * + * Copyright 2016 Nayan Deshmukh. + * 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 VMWARE 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 "util/u_rect.h" + +#include "vl_types.h" +#include "vl_vertex_buffers.h" +#include "vl_bicubic_filter.h" + +enum VS_OUTPUT +{ + VS_O_VPOS = 0, + VS_O_VTEX = 0 +}; + +static void * +create_vert_shader(struct vl_bicubic_filter *filter) +{ + struct ureg_program *shader; + struct ureg_src i_vpos; + struct ureg_dst o_vpos, o_vtex; + + shader = ureg_create(PIPE_SHADER_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 void +create_frag_shader_cubic_interpolater(struct ureg_program *shader, struct ureg_src tex_a, + struct ureg_src tex_b, struct ureg_src tex_c, + struct ureg_src tex_d, struct ureg_src t, + struct ureg_dst o_fragment) +{ + struct ureg_dst temp[11]; + struct ureg_dst t_2; + unsigned i; + + for(i = 0; i < 11; ++i) + temp[i] = ureg_DECL_temporary(shader); + t_2 = ureg_DECL_temporary(shader); + + /* + * |temp[0]| | 0 2 0 0 | |tex_a| + * |temp[1]| = | -1 0 1 0 |* |tex_b| + * |temp[2]| | 2 -5 4 -1 | |tex_c| + * |temp[3]| | -1 3 -3 1 | |tex_d| + */ + ureg_MUL(shader, temp[0], tex_b, ureg_imm1f(shader, 2.0f)); + + ureg_MUL(shader, temp[1], tex_a, ureg_imm1f(shader, -1.0f)); + ureg_MAD(shader, temp[1], tex_c, ureg_imm1f(shader, 1.0f), + ureg_src(temp[1])); + + ureg_MUL(shader, temp[2], tex_a, ureg_imm1f(shader, 2.0f)); + ureg_MAD(shader, temp[2], tex_b, ureg_imm1f(shader, -5.0f), + ureg_src(temp[2])); + ureg_MAD(shader, temp[2], tex_c, ureg_imm1f(shader, 4.0f), + ureg_src(temp[2])); + ureg_MAD(shader, temp[2], tex_d, ureg_imm1f(shader, -1.0f), + ureg_src(temp[2])); + + ureg_MUL(shader, temp[3], tex_a, ureg_imm1f(shader, -1.0f)); + ureg_MAD(shader, temp[3], tex_b, ureg_imm1f(shader, 3.0f), + ureg_src(temp[3])); + ureg_MAD(shader, temp[3], tex_c, ureg_imm1f(shader, -3.0f), + ureg_src(temp[3])); + ureg_MAD(shader, temp[3], tex_d, ureg_imm1f(shader, 1.0f), + ureg_src(temp[3])); + + /* + * t_2 = t*t + * o_fragment = 0.5*|1 t t^2 t^3|*|temp[0]| + * |temp[1]| + * |temp[2]| + * |temp[3]| + */ + + ureg_MUL(shader, t_2, t, t); + ureg_MUL(shader, temp[4], ureg_src(t_2), t); + + ureg_MUL(shader, temp[4], ureg_src(temp[4]), + ureg_src(temp[3])); + ureg_MUL(shader, temp[5], ureg_src(t_2), + ureg_src(temp[2])); + ureg_MUL(shader, temp[6], t, + ureg_src(temp[1])); + ureg_MUL(shader, temp[7], ureg_imm1f(shader, 1.0f), + ureg_src(temp[0])); + ureg_ADD(shader, temp[8], ureg_src(temp[4]), + ureg_src(temp[5])); + ureg_ADD(shader, temp[9], ureg_src(temp[6]), + ureg_src(temp[7])); + + ureg_ADD(shader, temp[10], ureg_src(temp[8]), + ureg_src(temp[9])); + ureg_MUL(shader, o_fragment, ureg_src(temp[10]), + ureg_imm1f(shader, 0.5f)); + + + for(i = 0; i < 11; ++i) + ureg_release_temporary(shader, temp[i]); + ureg_release_temporary(shader, t_2); +} + +static void * +create_frag_shader(struct vl_bicubic_filter *filter, unsigned video_width, + unsigned video_height, struct vertex2f *offsets) +{ + struct pipe_screen *screen = filter->pipe->screen; + struct ureg_program *shader; + struct ureg_src i_vtex, vtex; + struct ureg_src sampler; + struct ureg_src half_pixel; + struct ureg_dst t_array[23]; + struct ureg_dst o_fragment; + struct ureg_dst t; + unsigned i; + + if (screen->get_shader_param( + screen, PIPE_SHADER_FRAGMENT, PIPE_SHADER_CAP_MAX_TEMPS) < 23) { + + return NULL; + } + + shader = ureg_create(PIPE_SHADER_FRAGMENT); + if (!shader) { + 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 < 23; ++i) + t_array[i] = ureg_DECL_temporary(shader); + t = ureg_DECL_temporary(shader); + + half_pixel = ureg_DECL_constant(shader, 0); + o_fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0); + + /* + * temp = (i_vtex - (0.5/dst_size)) * i_size) + * t = frac(temp) + * vtex = floor(i_vtex)/i_size + */ + ureg_SUB(shader, ureg_writemask(t_array[21], TGSI_WRITEMASK_XY), + i_vtex, half_pixel); + ureg_MUL(shader, ureg_writemask(t_array[22], TGSI_WRITEMASK_XY), + ureg_src(t_array[21]), ureg_imm2f(shader, video_width, video_height)); + ureg_FRC(shader, ureg_writemask(t, TGSI_WRITEMASK_XY), + ureg_src(t_array[22])); + + ureg_FLR(shader, ureg_writemask(t_array[22], TGSI_WRITEMASK_XY), + ureg_src(t_array[22])); + ureg_DIV(shader, ureg_writemask(t_array[22], TGSI_WRITEMASK_XY), + ureg_src(t_array[22]), ureg_imm2f(shader, video_width, video_height)); + + /* + * t_array[0..*] = vtex + offset[0..*] + * t_array[0..*] = tex(t_array[0..*], sampler) + * t_array[16+i] = cubic_interpolate(t_array[4*i..4*i+3], t_x) + * o_fragment = cubic_interpolate(t_array[16..19], t_y) + */ + vtex = ureg_src(t_array[22]); + for (i = 0; i < 16; ++i) { + ureg_ADD(shader, ureg_writemask(t_array[i], TGSI_WRITEMASK_XY), + 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 < 16; ++i) { + ureg_TEX(shader, t_array[i], TGSI_TEXTURE_2D, ureg_src(t_array[i]), sampler); + } + + for(i = 0; i < 4; ++i) + create_frag_shader_cubic_interpolater(shader, ureg_src(t_array[4*i]), + ureg_src(t_array[4*i+1]), ureg_src(t_array[4*i+2]), ureg_src(t_array[4*i+3]), + ureg_scalar(ureg_src(t), TGSI_SWIZZLE_X), t_array[16+i]); + + create_frag_shader_cubic_interpolater(shader, ureg_src(t_array[16]), + ureg_src(t_array[17]), ureg_src(t_array[18]), ureg_src(t_array[19]), + ureg_scalar(ureg_src(t), TGSI_SWIZZLE_Y), o_fragment); + + for(i = 0; i < 23; ++i) + ureg_release_temporary(shader, t_array[i]); + ureg_release_temporary(shader, t); + + ureg_END(shader); + + return ureg_create_shader_and_destroy(shader, filter->pipe); +} + +bool +vl_bicubic_filter_init(struct vl_bicubic_filter *filter, struct pipe_context *pipe, + unsigned width, unsigned height) +{ + struct pipe_rasterizer_state rs_state; + struct pipe_blend_state blend; + struct vertex2f *offsets = NULL; + struct pipe_sampler_state sampler; + struct pipe_vertex_element ve; + unsigned i; + + assert(filter && pipe); + assert(width && height); + + memset(filter, 0, sizeof(*filter)); + filter->pipe = pipe; + + memset(&rs_state, 0, sizeof(rs_state)); + rs_state.half_pixel_center = true; + rs_state.bottom_edge_rule = 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) * 16); + if (!offsets) + goto error_offsets; + + offsets[0].x = -1.0f; offsets[0].y = -1.0f; + offsets[1].x = 0.0f; offsets[1].y = -1.0f; + offsets[2].x = 1.0f; offsets[2].y = -1.0f; + offsets[3].x = 2.0f; offsets[3].y = -1.0f; + + offsets[4].x = -1.0f; offsets[4].y = 0.0f; + offsets[5].x = 0.0f; offsets[5].y = 0.0f; + offsets[6].x = 1.0f; offsets[6].y = 0.0f; + offsets[7].x = 2.0f; offsets[7].y = 0.0f; + + offsets[8].x = -1.0f; offsets[8].y = 1.0f; + offsets[9].x = 0.0f; offsets[9].y = 1.0f; + offsets[10].x = 1.0f; offsets[10].y = 1.0f; + offsets[11].x = 2.0f; offsets[11].y = 1.0f; + + offsets[12].x = -1.0f; offsets[12].y = 2.0f; + offsets[13].x = 0.0f; offsets[13].y = 2.0f; + offsets[14].x = 1.0f; offsets[14].y = 2.0f; + offsets[15].x = 2.0f; offsets[15].y = 2.0f; + + for (i = 0; i < 16; ++i) { + offsets[i].x /= width; + offsets[i].y /= height; + } + + filter->vs = create_vert_shader(filter); + if (!filter->vs) + goto error_vs; + + filter->fs = create_frag_shader(filter, width, height, offsets); + if (!filter->fs) + goto error_fs; + + return true; + +error_fs: + pipe->delete_vs_state(pipe, filter->vs); + +error_vs: + +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_bicubic_filter_cleanup(struct vl_bicubic_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_bicubic_filter_render(struct vl_bicubic_filter *filter, + struct pipe_sampler_view *src, + struct pipe_surface *dst, + struct u_rect *dst_area, + struct u_rect *dst_clip) +{ + struct pipe_viewport_state viewport; + struct pipe_framebuffer_state fb_state; + struct pipe_scissor_state scissor; + union pipe_color_union clear_color; + struct pipe_transfer *buf_transfer; + struct pipe_resource *surface_size; + assert(filter && src && dst); + + if (dst_clip) { + scissor.minx = dst_clip->x0; + scissor.miny = dst_clip->y0; + scissor.maxx = dst_clip->x1; + scissor.maxy = dst_clip->y1; + } else { + scissor.minx = 0; + scissor.miny = 0; + scissor.maxx = dst->width; + scissor.maxy = dst->height; + } + + clear_color.f[0] = clear_color.f[1] = 0.0f; + clear_color.f[2] = clear_color.f[3] = 0.0f; + surface_size = pipe_buffer_create + ( + filter->pipe->screen, + PIPE_BIND_CONSTANT_BUFFER, + PIPE_USAGE_DEFAULT, + 2*sizeof(float) + ); + + + memset(&viewport, 0, sizeof(viewport)); + if(dst_area){ + viewport.scale[0] = dst_area->x1 - dst_area->x0; + viewport.scale[1] = dst_area->y1 - dst_area->y0; + viewport.translate[0] = dst_area->x0; + viewport.translate[1] = dst_area->y0; + } else { + viewport.scale[0] = dst->width; + viewport.scale[1] = dst->height; + } + viewport.scale[2] = 1; + + float *ptr = pipe_buffer_map(filter->pipe, surface_size, + PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE, + &buf_transfer); + + ptr[0] = 0.5f/viewport.scale[0]; + ptr[1] = 0.5f/viewport.scale[1]; + + pipe_buffer_unmap(filter->pipe, buf_transfer); + + 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->set_scissor_states(filter->pipe, 0, 1, &scissor); + filter->pipe->clear_render_target(filter->pipe, dst, &clear_color, + 0, 0, dst->width, dst->height); + pipe_set_constant_buffer(filter->pipe, PIPE_SHADER_FRAGMENT, 0, surface_size); + filter->pipe->bind_rasterizer_state(filter->pipe, filter->rs_state); + filter->pipe->bind_blend_state(filter->pipe, filter->blend); + filter->pipe->bind_sampler_states(filter->pipe, PIPE_SHADER_FRAGMENT, + 0, 1, &filter->sampler); + filter->pipe->set_sampler_views(filter->pipe, PIPE_SHADER_FRAGMENT, + 0, 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_states(filter->pipe, 0, 1, &viewport); + filter->pipe->set_vertex_buffers(filter->pipe, 0, 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_bicubic_filter.h b/src/gallium/auxiliary/vl/vl_bicubic_filter.h new file mode 100644 index 00000000000..e5bef474e50 --- /dev/null +++ b/src/gallium/auxiliary/vl/vl_bicubic_filter.h @@ -0,0 +1,63 @@ +/************************************************************************** + * + * Copyright 2016 Nayan Deshmukh. + * 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 VMWARE 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 bicubic interpolation filters */ + +#ifndef vl_bicubic_filter_h +#define vl_bicubic_filter_h + +#include "pipe/p_state.h" + +struct vl_bicubic_filter +{ + struct pipe_context *pipe; + struct pipe_vertex_buffer quad; + + void *rs_state; + void *blend; + void *sampler; + void *ves; + void *vs, *fs; +}; + +bool +vl_bicubic_filter_init(struct vl_bicubic_filter *filter, struct pipe_context *pipe, + unsigned width, unsigned height); + +void +vl_bicubic_filter_cleanup(struct vl_bicubic_filter *filter); + + +void +vl_bicubic_filter_render(struct vl_bicubic_filter *filter, + struct pipe_sampler_view *src, + struct pipe_surface *dst, + struct u_rect *dst_area, + struct u_rect *dst_clip); + + +#endif /* vl_bicubic_filter_h */ -- 2.30.2