/**************************************************************************
*
* Copyright 2011 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 <assert.h>
#include "pipe/p_screen.h"
#include "pipe/p_context.h"
#include "util/u_draw.h"
#include "util/u_sampler.h"
#include "util/u_inlines.h"
#include "util/u_memory.h"
#include "tgsi/tgsi_ureg.h"
#include "vl_defines.h"
#include "vl_types.h"
#include "vl_zscan.h"
#include "vl_vertex_buffers.h"
enum VS_OUTPUT
{
VS_O_VPOS = 0,
VS_O_VTEX = 0
};
const int vl_zscan_linear[] =
{
/* Linear scan pattern */
0, 1, 2, 3, 4, 5, 6, 7,
8, 9,10,11,12,13,14,15,
16,17,18,19,20,21,22,23,
24,25,26,27,28,29,30,31,
32,33,34,35,36,37,38,39,
40,41,42,43,44,45,46,47,
48,49,50,51,52,53,54,55,
56,57,58,59,60,61,62,63
};
const int vl_zscan_normal[] =
{
/* Zig-Zag scan pattern */
0, 1, 8,16, 9, 2, 3,10,
17,24,32,25,18,11, 4, 5,
12,19,26,33,40,48,41,34,
27,20,13, 6, 7,14,21,28,
35,42,49,56,57,50,43,36,
29,22,15,23,30,37,44,51,
58,59,52,45,38,31,39,46,
53,60,61,54,47,55,62,63
};
const int vl_zscan_alternate[] =
{
/* Alternate scan pattern */
0, 8,16,24, 1, 9, 2,10,
17,25,32,40,48,56,57,49,
41,33,26,18, 3,11, 4,12,
19,27,34,42,50,58,35,43,
51,59,20,28, 5,13, 6,14,
21,29,36,44,52,60,37,45,
53,61,22,30, 7,15,23,31,
38,46,54,62,39,47,55,63
};
static void *
create_vert_shader(struct vl_zscan *zscan)
{
struct ureg_program *shader;
struct ureg_src scale;
struct ureg_src vrect, vpos, block_num;
struct ureg_dst tmp;
struct ureg_dst o_vpos;
struct ureg_dst *o_vtex;
signed i;
shader = ureg_create(TGSI_PROCESSOR_VERTEX);
if (!shader)
return NULL;
o_vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
scale = ureg_imm2f(shader,
(float)VL_BLOCK_WIDTH / zscan->buffer_width,
(float)VL_BLOCK_HEIGHT / zscan->buffer_height);
vrect = ureg_DECL_vs_input(shader, VS_I_RECT);
vpos = ureg_DECL_vs_input(shader, VS_I_VPOS);
block_num = ureg_DECL_vs_input(shader, VS_I_BLOCK_NUM);
tmp = ureg_DECL_temporary(shader);
o_vpos = ureg_DECL_output(shader, TGSI_SEMANTIC_POSITION, VS_O_VPOS);
for (i = 0; i < zscan->num_channels; ++i)
o_vtex[i] = ureg_DECL_output(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i);
/*
* o_vpos.xy = (vpos + vrect) * scale
* o_vpos.zw = 1.0f
*
* tmp.xy = InstanceID / blocks_per_line
* tmp.x = frac(tmp.x)
* tmp.y = floor(tmp.y)
*
* o_vtex.x = vrect.x / blocks_per_line + tmp.x
* o_vtex.y = vrect.y
* o_vtex.z = tmp.z * blocks_per_line / blocks_total
*/
ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XY), vpos, vrect);
ureg_MUL(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_XY), ureg_src(tmp), scale);
ureg_MOV(shader, ureg_writemask(o_vpos, TGSI_WRITEMASK_ZW), ureg_imm1f(shader, 1.0f));
ureg_MUL(shader, ureg_writemask(tmp, TGSI_WRITEMASK_XW), ureg_scalar(block_num, TGSI_SWIZZLE_X),
ureg_imm1f(shader, 1.0f / zscan->blocks_per_line));
ureg_FRC(shader, ureg_writemask(tmp, TGSI_WRITEMASK_Y), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_X));
ureg_FLR(shader, ureg_writemask(tmp, TGSI_WRITEMASK_W), ureg_src(tmp));
for (i = 0; i < zscan->num_channels; ++i) {
ureg_ADD(shader, ureg_writemask(tmp, TGSI_WRITEMASK_X), ureg_scalar(ureg_src(tmp), TGSI_SWIZZLE_Y),
ureg_imm1f(shader, 1.0f / (zscan->blocks_per_line * VL_BLOCK_WIDTH)
* (i - (signed)zscan->num_channels / 2)));
ureg_MAD(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_X), vrect,
ureg_imm1f(shader, 1.0f / zscan->blocks_per_line), ureg_src(tmp));
ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Y), vrect);
ureg_MOV(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_Z), vpos);
ureg_MUL(shader, ureg_writemask(o_vtex[i], TGSI_WRITEMASK_W), ureg_src(tmp),
ureg_imm1f(shader, (float)zscan->blocks_per_line / zscan->blocks_total));
}
ureg_release_temporary(shader, tmp);
ureg_END(shader);
FREE(o_vtex);
return ureg_create_shader_and_destroy(shader, zscan->pipe);
}
static void *
create_frag_shader(struct vl_zscan *zscan)
{
struct ureg_program *shader;
struct ureg_src *vtex;
struct ureg_src samp_src, samp_scan, samp_quant;
struct ureg_dst *tmp;
struct ureg_dst quant, fragment;
unsigned i;
shader = ureg_create(TGSI_PROCESSOR_FRAGMENT);
if (!shader)
return NULL;
vtex = MALLOC(zscan->num_channels * sizeof(struct ureg_src));
tmp = MALLOC(zscan->num_channels * sizeof(struct ureg_dst));
for (i = 0; i < zscan->num_channels; ++i)
vtex[i] = ureg_DECL_fs_input(shader, TGSI_SEMANTIC_GENERIC, VS_O_VTEX + i, TGSI_INTERPOLATE_LINEAR);
samp_src = ureg_DECL_sampler(shader, 0);
samp_scan = ureg_DECL_sampler(shader, 1);
samp_quant = ureg_DECL_sampler(shader, 2);
for (i = 0; i < zscan->num_channels; ++i)
tmp[i] = ureg_DECL_temporary(shader);
quant = ureg_DECL_temporary(shader);
fragment = ureg_DECL_output(shader, TGSI_SEMANTIC_COLOR, 0);
/*
* tmp.x = tex(vtex, 1)
* tmp.y = vtex.z
* fragment = tex(tmp, 0) * quant
*/
for (i = 0; i < zscan->num_channels; ++i)
ureg_TEX(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_X), TGSI_TEXTURE_2D, vtex[i], samp_scan);
for (i = 0; i < zscan->num_channels; ++i)
ureg_MOV(shader, ureg_writemask(tmp[i], TGSI_WRITEMASK_Y), ureg_scalar(vtex[i], TGSI_SWIZZLE_W));
for (i = 0; i < zscan->num_channels; ++i) {
ureg_TEX(shader, ureg_writemask(tmp[0], TGSI_WRITEMASK_X << i), TGSI_TEXTURE_2D, ureg_src(tmp[i]), samp_src);
ureg_TEX(shader, ureg_writemask(quant, TGSI_WRITEMASK_X << i), TGSI_TEXTURE_3D, vtex[i], samp_quant);
}
ureg_MUL(shader, quant, ureg_src(quant), ureg_imm1f(shader, 16.0f));
ureg_MUL(shader, fragment, ureg_src(tmp[0]), ureg_src(quant));
for (i = 0; i < zscan->num_channels; ++i)
ureg_release_temporary(shader, tmp[i]);
ureg_END(shader);
FREE(vtex);
FREE(tmp);
return ureg_create_shader_and_destroy(shader, zscan->pipe);
}
static bool
init_shaders(struct vl_zscan *zscan)
{
assert(zscan);
zscan->vs = create_vert_shader(zscan);
if (!zscan->vs)
goto error_vs;
zscan->fs = create_frag_shader(zscan);
if (!zscan->fs)
goto error_fs;
return true;
error_fs:
zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
error_vs:
return false;
}
static void
cleanup_shaders(struct vl_zscan *zscan)
{
assert(zscan);
zscan->pipe->delete_vs_state(zscan->pipe, zscan->vs);
zscan->pipe->delete_fs_state(zscan->pipe, zscan->fs);
}
static bool
init_state(struct vl_zscan *zscan)
{
struct pipe_blend_state blend;
struct pipe_rasterizer_state rs_state;
struct pipe_sampler_state sampler;
unsigned i;
assert(zscan);
memset(&rs_state, 0, sizeof(rs_state));
rs_state.gl_rasterization_rules = true;
rs_state.depth_clip = 1;
zscan->rs_state = zscan->pipe->create_rasterizer_state(zscan->pipe, &rs_state);
if (!zscan->rs_state)
goto error_rs_state;
memset(&blend, 0, sizeof blend);
blend.independent_blend_enable = 0;
blend.rt[0].blend_enable = 0;
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_enable = 0;
blend.logicop_func = PIPE_LOGICOP_CLEAR;
/* Needed to allow color writes to FB, even if blending disabled */
blend.rt[0].colormask = PIPE_MASK_RGBA;
blend.dither = 0;
zscan->blend = zscan->pipe->create_blend_state(zscan->pipe, &blend);
if (!zscan->blend)
goto error_blend;
for (i = 0; i < 3; ++i) {
memset(&sampler, 0, sizeof(sampler));
sampler.wrap_s = PIPE_TEX_WRAP_REPEAT;
sampler.wrap_t = PIPE_TEX_WRAP_REPEAT;
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;
zscan->samplers[i] = zscan->pipe->create_sampler_state(zscan->pipe, &sampler);
if (!zscan->samplers[i])
goto error_samplers;
}
return true;
error_samplers:
for (i = 0; i < 2; ++i)
if (zscan->samplers[i])
zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
error_blend:
zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
error_rs_state:
return false;
}
static void
cleanup_state(struct vl_zscan *zscan)
{
unsigned i;
assert(zscan);
for (i = 0; i < 3; ++i)
zscan->pipe->delete_sampler_state(zscan->pipe, zscan->samplers[i]);
zscan->pipe->delete_rasterizer_state(zscan->pipe, zscan->rs_state);
zscan->pipe->delete_blend_state(zscan->pipe, zscan->blend);
}
struct pipe_sampler_view *
vl_zscan_layout(struct pipe_context *pipe, const int layout[64], unsigned blocks_per_line)
{
const unsigned total_size = blocks_per_line * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
int patched_layout[64];
struct pipe_resource res_tmpl, *res;
struct pipe_sampler_view sv_tmpl, *sv;
struct pipe_transfer *buf_transfer;
unsigned x, y, i, pitch;
float *f;
struct pipe_box rect =
{
0, 0, 0,
VL_BLOCK_WIDTH * blocks_per_line,
VL_BLOCK_HEIGHT,
1
};
assert(pipe && layout && blocks_per_line);
for (i = 0; i < 64; ++i)
patched_layout[layout[i]] = i;
memset(&res_tmpl, 0, sizeof(res_tmpl));
res_tmpl.target = PIPE_TEXTURE_2D;
res_tmpl.format = PIPE_FORMAT_R32_FLOAT;
res_tmpl.width0 = VL_BLOCK_WIDTH * blocks_per_line;
res_tmpl.height0 = VL_BLOCK_HEIGHT;
res_tmpl.depth0 = 1;
res_tmpl.array_size = 1;
res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
res = pipe->screen->resource_create(pipe->screen, &res_tmpl);
if (!res)
goto error_resource;
buf_transfer = pipe->get_transfer
(
pipe, res,
0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
&rect
);
if (!buf_transfer)
goto error_transfer;
pitch = buf_transfer->stride / sizeof(float);
f = pipe->transfer_map(pipe, buf_transfer);
if (!f)
goto error_map;
for (i = 0; i < blocks_per_line; ++i)
for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
for (x = 0; x < VL_BLOCK_WIDTH; ++x) {
float addr = patched_layout[x + y * VL_BLOCK_WIDTH] +
i * VL_BLOCK_WIDTH * VL_BLOCK_HEIGHT;
addr /= total_size;
f[i * VL_BLOCK_WIDTH + y * pitch + x] = addr;
}
pipe->transfer_unmap(pipe, buf_transfer);
pipe->transfer_destroy(pipe, buf_transfer);
memset(&sv_tmpl, 0, sizeof(sv_tmpl));
u_sampler_view_default_template(&sv_tmpl, res, res->format);
sv = pipe->create_sampler_view(pipe, res, &sv_tmpl);
pipe_resource_reference(&res, NULL);
if (!sv)
goto error_map;
return sv;
error_map:
pipe->transfer_destroy(pipe, buf_transfer);
error_transfer:
pipe_resource_reference(&res, NULL);
error_resource:
return NULL;
}
bool
vl_zscan_init(struct vl_zscan *zscan, struct pipe_context *pipe,
unsigned buffer_width, unsigned buffer_height,
unsigned blocks_per_line, unsigned blocks_total,
unsigned num_channels)
{
assert(zscan && pipe);
zscan->pipe = pipe;
zscan->buffer_width = buffer_width;
zscan->buffer_height = buffer_height;
zscan->num_channels = num_channels;
zscan->blocks_per_line = blocks_per_line;
zscan->blocks_total = blocks_total;
if(!init_shaders(zscan))
return false;
if(!init_state(zscan)) {
cleanup_shaders(zscan);
return false;
}
return true;
}
void
vl_zscan_cleanup(struct vl_zscan *zscan)
{
assert(zscan);
cleanup_shaders(zscan);
cleanup_state(zscan);
}
bool
vl_zscan_init_buffer(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
struct pipe_sampler_view *src, struct pipe_surface *dst)
{
struct pipe_resource res_tmpl, *res;
struct pipe_sampler_view sv_tmpl;
assert(zscan && buffer);
memset(buffer, 0, sizeof(struct vl_zscan_buffer));
pipe_sampler_view_reference(&buffer->src, src);
buffer->viewport.scale[0] = dst->width;
buffer->viewport.scale[1] = dst->height;
buffer->viewport.scale[2] = 1;
buffer->viewport.scale[3] = 1;
buffer->viewport.translate[0] = 0;
buffer->viewport.translate[1] = 0;
buffer->viewport.translate[2] = 0;
buffer->viewport.translate[3] = 0;
buffer->fb_state.width = dst->width;
buffer->fb_state.height = dst->height;
buffer->fb_state.nr_cbufs = 1;
pipe_surface_reference(&buffer->fb_state.cbufs[0], dst);
memset(&res_tmpl, 0, sizeof(res_tmpl));
res_tmpl.target = PIPE_TEXTURE_3D;
res_tmpl.format = PIPE_FORMAT_R8_UNORM;
res_tmpl.width0 = VL_BLOCK_WIDTH * zscan->blocks_per_line;
res_tmpl.height0 = VL_BLOCK_HEIGHT;
res_tmpl.depth0 = 2;
res_tmpl.array_size = 1;
res_tmpl.usage = PIPE_USAGE_IMMUTABLE;
res_tmpl.bind = PIPE_BIND_SAMPLER_VIEW;
res = zscan->pipe->screen->resource_create(zscan->pipe->screen, &res_tmpl);
if (!res)
return false;
memset(&sv_tmpl, 0, sizeof(sv_tmpl));
u_sampler_view_default_template(&sv_tmpl, res, res->format);
sv_tmpl.swizzle_r = sv_tmpl.swizzle_g = sv_tmpl.swizzle_b = sv_tmpl.swizzle_a = TGSI_SWIZZLE_X;
buffer->quant = zscan->pipe->create_sampler_view(zscan->pipe, res, &sv_tmpl);
pipe_resource_reference(&res, NULL);
if (!buffer->quant)
return false;
return true;
}
void
vl_zscan_cleanup_buffer(struct vl_zscan_buffer *buffer)
{
assert(buffer);
pipe_sampler_view_reference(&buffer->src, NULL);
pipe_sampler_view_reference(&buffer->layout, NULL);
pipe_sampler_view_reference(&buffer->quant, NULL);
pipe_surface_reference(&buffer->fb_state.cbufs[0], NULL);
}
void
vl_zscan_set_layout(struct vl_zscan_buffer *buffer, struct pipe_sampler_view *layout)
{
assert(buffer);
assert(layout);
pipe_sampler_view_reference(&buffer->layout, layout);
}
void
vl_zscan_upload_quant(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer,
const uint8_t matrix[64], bool intra)
{
struct pipe_context *pipe;
struct pipe_transfer *buf_transfer;
unsigned x, y, i, pitch;
uint8_t *data;
struct pipe_box rect =
{
0, 0, intra ? 1 : 0,
VL_BLOCK_WIDTH,
VL_BLOCK_HEIGHT,
1
};
assert(buffer);
assert(matrix);
pipe = zscan->pipe;
rect.width *= zscan->blocks_per_line;
buf_transfer = pipe->get_transfer
(
pipe, buffer->quant->texture,
0, PIPE_TRANSFER_WRITE | PIPE_TRANSFER_DISCARD_RANGE,
&rect
);
if (!buf_transfer)
goto error_transfer;
pitch = buf_transfer->stride;
data = pipe->transfer_map(pipe, buf_transfer);
if (!data)
goto error_map;
for (i = 0; i < zscan->blocks_per_line; ++i)
for (y = 0; y < VL_BLOCK_HEIGHT; ++y)
for (x = 0; x < VL_BLOCK_WIDTH; ++x)
data[i * VL_BLOCK_WIDTH + y * pitch + x] = matrix[x + y * VL_BLOCK_WIDTH];
pipe->transfer_unmap(pipe, buf_transfer);
error_map:
pipe->transfer_destroy(pipe, buf_transfer);
error_transfer:
return;
}
void
vl_zscan_render(struct vl_zscan *zscan, struct vl_zscan_buffer *buffer, unsigned num_instances)
{
assert(buffer);
zscan->pipe->bind_rasterizer_state(zscan->pipe, zscan->rs_state);
zscan->pipe->bind_blend_state(zscan->pipe, zscan->blend);
zscan->pipe->bind_fragment_sampler_states(zscan->pipe, 3, zscan->samplers);
zscan->pipe->set_framebuffer_state(zscan->pipe, &buffer->fb_state);
zscan->pipe->set_viewport_state(zscan->pipe, &buffer->viewport);
zscan->pipe->set_fragment_sampler_views(zscan->pipe, 3, &buffer->src);
zscan->pipe->bind_vs_state(zscan->pipe, zscan->vs);
zscan->pipe->bind_fs_state(zscan->pipe, zscan->fs);
util_draw_arrays_instanced(zscan->pipe, PIPE_PRIM_QUADS, 0, 4, 0, num_instances);
}