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|
/**************************************************************************
*
* Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
* 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.
*
**************************************************************************/
/**
* @file
* Copy/blit pixel rect between surfaces
*
* @author Brian Paul
*/
#include "pipe/p_context.h"
#include "util/u_debug.h"
#include "pipe/p_defines.h"
#include "util/u_inlines.h"
#include "pipe/p_shader_tokens.h"
#include "pipe/p_state.h"
#include "util/u_blit.h"
#include "util/u_draw_quad.h"
#include "util/u_math.h"
#include "util/u_memory.h"
#include "util/u_sampler.h"
#include "util/u_simple_shaders.h"
#include "cso_cache/cso_context.h"
struct blit_state
{
struct pipe_context *pipe;
struct cso_context *cso;
struct pipe_blend_state blend;
struct pipe_depth_stencil_alpha_state depthstencil;
struct pipe_rasterizer_state rasterizer;
struct pipe_sampler_state sampler;
struct pipe_viewport_state viewport;
struct pipe_clip_state clip;
struct pipe_vertex_element velem[2];
void *vs;
void *fs[TGSI_WRITEMASK_XYZW + 1];
struct pipe_resource *vbuf; /**< quad vertices */
unsigned vbuf_slot;
float vertices[4][2][4]; /**< vertex/texcoords for quad */
};
/**
* Create state object for blit.
* Intended to be created once and re-used for many blit() calls.
*/
struct blit_state *
util_create_blit(struct pipe_context *pipe, struct cso_context *cso)
{
struct blit_state *ctx;
uint i;
ctx = CALLOC_STRUCT(blit_state);
if (!ctx)
return NULL;
ctx->pipe = pipe;
ctx->cso = cso;
/* disabled blending/masking */
memset(&ctx->blend, 0, sizeof(ctx->blend));
ctx->blend.rt[0].colormask = PIPE_MASK_RGBA;
/* no-op depth/stencil/alpha */
memset(&ctx->depthstencil, 0, sizeof(ctx->depthstencil));
/* rasterizer */
memset(&ctx->rasterizer, 0, sizeof(ctx->rasterizer));
ctx->rasterizer.cull_face = PIPE_FACE_NONE;
ctx->rasterizer.gl_rasterization_rules = 1;
/* samplers */
memset(&ctx->sampler, 0, sizeof(ctx->sampler));
ctx->sampler.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
ctx->sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE;
ctx->sampler.min_img_filter = 0; /* set later */
ctx->sampler.mag_img_filter = 0; /* set later */
ctx->sampler.normalized_coords = 1;
/* vertex elements state */
memset(&ctx->velem[0], 0, sizeof(ctx->velem[0]) * 2);
for (i = 0; i < 2; i++) {
ctx->velem[i].src_offset = i * 4 * sizeof(float);
ctx->velem[i].instance_divisor = 0;
ctx->velem[i].vertex_buffer_index = 0;
ctx->velem[i].src_format = PIPE_FORMAT_R32G32B32A32_FLOAT;
}
/* vertex shader - still required to provide the linkage between
* fragment shader input semantics and vertex_element/buffers.
*/
{
const uint semantic_names[] = { TGSI_SEMANTIC_POSITION,
TGSI_SEMANTIC_GENERIC };
const uint semantic_indexes[] = { 0, 0 };
ctx->vs = util_make_vertex_passthrough_shader(pipe, 2, semantic_names,
semantic_indexes);
}
/* fragment shader */
ctx->fs[TGSI_WRITEMASK_XYZW] =
util_make_fragment_tex_shader(pipe, TGSI_TEXTURE_2D,
TGSI_INTERPOLATE_LINEAR);
ctx->vbuf = NULL;
/* init vertex data that doesn't change */
for (i = 0; i < 4; i++) {
ctx->vertices[i][0][3] = 1.0f; /* w */
ctx->vertices[i][1][2] = 0.0f; /* r */
ctx->vertices[i][1][3] = 1.0f; /* q */
}
return ctx;
}
/**
* Destroy a blit context
*/
void
util_destroy_blit(struct blit_state *ctx)
{
struct pipe_context *pipe = ctx->pipe;
unsigned i;
pipe->delete_vs_state(pipe, ctx->vs);
for (i = 0; i < Elements(ctx->fs); i++)
if (ctx->fs[i])
pipe->delete_fs_state(pipe, ctx->fs[i]);
pipe_resource_reference(&ctx->vbuf, NULL);
FREE(ctx);
}
/**
* Get offset of next free slot in vertex buffer for quad vertices.
*/
static unsigned
get_next_slot( struct blit_state *ctx )
{
const unsigned max_slots = 4096 / sizeof ctx->vertices;
if (ctx->vbuf_slot >= max_slots)
util_blit_flush( ctx );
if (!ctx->vbuf) {
ctx->vbuf = pipe_buffer_create(ctx->pipe->screen,
PIPE_BIND_VERTEX_BUFFER,
max_slots * sizeof ctx->vertices);
}
return ctx->vbuf_slot++ * sizeof ctx->vertices;
}
/**
* Setup vertex data for the textured quad we'll draw.
* Note: y=0=top
*/
static unsigned
setup_vertex_data_tex(struct blit_state *ctx,
float x0, float y0, float x1, float y1,
float s0, float t0, float s1, float t1,
float z)
{
unsigned offset;
ctx->vertices[0][0][0] = x0;
ctx->vertices[0][0][1] = y0;
ctx->vertices[0][0][2] = z;
ctx->vertices[0][1][0] = s0; /*s*/
ctx->vertices[0][1][1] = t0; /*t*/
ctx->vertices[1][0][0] = x1;
ctx->vertices[1][0][1] = y0;
ctx->vertices[1][0][2] = z;
ctx->vertices[1][1][0] = s1; /*s*/
ctx->vertices[1][1][1] = t0; /*t*/
ctx->vertices[2][0][0] = x1;
ctx->vertices[2][0][1] = y1;
ctx->vertices[2][0][2] = z;
ctx->vertices[2][1][0] = s1;
ctx->vertices[2][1][1] = t1;
ctx->vertices[3][0][0] = x0;
ctx->vertices[3][0][1] = y1;
ctx->vertices[3][0][2] = z;
ctx->vertices[3][1][0] = s0;
ctx->vertices[3][1][1] = t1;
offset = get_next_slot( ctx );
pipe_buffer_write_nooverlap(ctx->pipe, ctx->vbuf,
offset, sizeof(ctx->vertices), ctx->vertices);
return offset;
}
/**
* \return TRUE if two regions overlap, FALSE otherwise
*/
static boolean
regions_overlap(int srcX0, int srcY0,
int srcX1, int srcY1,
int dstX0, int dstY0,
int dstX1, int dstY1)
{
if (MAX2(srcX0, srcX1) < MIN2(dstX0, dstX1))
return FALSE; /* src completely left of dst */
if (MAX2(dstX0, dstX1) < MIN2(srcX0, srcX1))
return FALSE; /* dst completely left of src */
if (MAX2(srcY0, srcY1) < MIN2(dstY0, dstY1))
return FALSE; /* src completely above dst */
if (MAX2(dstY0, dstY1) < MIN2(srcY0, srcY1))
return FALSE; /* dst completely above src */
return TRUE; /* some overlap */
}
/**
* Copy pixel block from src surface to dst surface.
* Overlapping regions are acceptable.
* Flipping and stretching are supported.
* \param filter one of PIPE_TEX_MIPFILTER_NEAREST/LINEAR
* \param writemask controls which channels in the dest surface are sourced
* from the src surface. Disabled channels are sourced
* from (0,0,0,1).
* XXX need some control over blitting Z and/or stencil.
*/
void
util_blit_pixels_writemask(struct blit_state *ctx,
struct pipe_resource *src_tex,
struct pipe_subresource srcsub,
int srcX0, int srcY0,
int srcX1, int srcY1,
int srcZ0,
struct pipe_surface *dst,
int dstX0, int dstY0,
int dstX1, int dstY1,
float z, uint filter,
uint writemask)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
struct pipe_sampler_view *sampler_view = NULL;
struct pipe_sampler_view sv_templ;
struct pipe_framebuffer_state fb;
const int srcW = abs(srcX1 - srcX0);
const int srcH = abs(srcY1 - srcY0);
unsigned offset;
boolean overlap;
float s0, t0, s1, t1;
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
assert(srcsub.level <= src_tex->last_level);
/* do the regions overlap? */
overlap = src_tex == dst->texture &&
dst->face == srcsub.face &&
dst->level == srcsub.level &&
dst->zslice == srcZ0 &&
regions_overlap(srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1);
/*
* Check for simple case: no format conversion, no flipping, no stretching,
* no overlapping.
* Filter mode should not matter since there's no stretching.
*/
if (dst->format == src_tex->format &&
srcX0 < srcX1 &&
dstX0 < dstX1 &&
srcY0 < srcY1 &&
dstY0 < dstY1 &&
(dstX1 - dstX0) == (srcX1 - srcX0) &&
(dstY1 - dstY0) == (srcY1 - srcY0) &&
!overlap) {
struct pipe_subresource subdst;
subdst.face = dst->face;
subdst.level = dst->level;
pipe->resource_copy_region(pipe,
dst->texture, subdst,
dstX0, dstY0, dst->zslice,/* dest */
src_tex, srcsub,
srcX0, srcY0, srcZ0,/* src */
srcW, srcH); /* size */
return;
}
/* Create a temporary texture when src and dest alias or when src
* is anything other than a 2d texture.
* XXX should just use appropriate shader to access 1d / 3d slice / cube face,
* much like the u_blitter code does (should be pretty trivial).
*
* This can still be improved upon.
*/
if ((src_tex == dst->texture &&
dst->face == srcsub.face &&
dst->level == srcsub.level &&
dst->zslice == srcZ0) ||
(src_tex->target != PIPE_TEXTURE_2D &&
src_tex->target != PIPE_TEXTURE_RECT))
{
struct pipe_resource texTemp;
struct pipe_resource *tex;
struct pipe_sampler_view sv_templ;
struct pipe_subresource texsub;
const int srcLeft = MIN2(srcX0, srcX1);
const int srcTop = MIN2(srcY0, srcY1);
if (srcLeft != srcX0) {
/* left-right flip */
int tmp = dstX0;
dstX0 = dstX1;
dstX1 = tmp;
}
if (srcTop != srcY0) {
/* up-down flip */
int tmp = dstY0;
dstY0 = dstY1;
dstY1 = tmp;
}
/* create temp texture */
memset(&texTemp, 0, sizeof(texTemp));
texTemp.target = PIPE_TEXTURE_2D;
texTemp.format = src_tex->format;
texTemp.last_level = 0;
texTemp.width0 = srcW;
texTemp.height0 = srcH;
texTemp.depth0 = 1;
texTemp.bind = PIPE_BIND_SAMPLER_VIEW;
tex = screen->resource_create(screen, &texTemp);
if (!tex)
return;
texsub.face = 0;
texsub.level = 0;
/* load temp texture */
pipe->resource_copy_region(pipe,
tex, texsub, 0, 0, 0, /* dest */
src_tex, srcsub, srcLeft, srcTop, srcZ0, /* src */
srcW, srcH); /* size */
s0 = 0.0f;
s1 = 1.0f;
t0 = 0.0f;
t1 = 1.0f;
u_sampler_view_default_template(&sv_templ, tex, tex->format);
sampler_view = pipe->create_sampler_view(pipe, tex, &sv_templ);
if (!sampler_view) {
pipe_resource_reference(&tex, NULL);
return;
}
pipe_resource_reference(&tex, NULL);
}
else {
u_sampler_view_default_template(&sv_templ, src_tex, src_tex->format);
sv_templ.first_level = sv_templ.last_level = srcsub.level;
sampler_view = pipe->create_sampler_view(pipe, src_tex, &sv_templ);
if (!sampler_view) {
return;
}
s0 = srcX0 / (float)(u_minify(sampler_view->texture->width0, srcsub.level));
s1 = srcX1 / (float)(u_minify(sampler_view->texture->width0, srcsub.level));
t0 = srcY0 / (float)(u_minify(sampler_view->texture->height0, srcsub.level));
t1 = srcY1 / (float)(u_minify(sampler_view->texture->height0, srcsub.level));
}
assert(screen->is_format_supported(screen, sampler_view->format, PIPE_TEXTURE_2D,
sampler_view->texture->nr_samples,
PIPE_BIND_SAMPLER_VIEW, 0));
assert(screen->is_format_supported(screen, dst->format, PIPE_TEXTURE_2D,
dst->texture->nr_samples,
PIPE_BIND_RENDER_TARGET, 0));
/* save state (restored below) */
cso_save_blend(ctx->cso);
cso_save_depth_stencil_alpha(ctx->cso);
cso_save_rasterizer(ctx->cso);
cso_save_samplers(ctx->cso);
cso_save_fragment_sampler_views(ctx->cso);
cso_save_viewport(ctx->cso);
cso_save_framebuffer(ctx->cso);
cso_save_fragment_shader(ctx->cso);
cso_save_vertex_shader(ctx->cso);
cso_save_clip(ctx->cso);
cso_save_vertex_elements(ctx->cso);
/* set misc state we care about */
cso_set_blend(ctx->cso, &ctx->blend);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_clip(ctx->cso, &ctx->clip);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
/* sampler */
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
/* we've limited this already with the sampler view but you never know... */
ctx->sampler.min_lod = srcsub.level;
ctx->sampler.max_lod = srcsub.level;
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
cso_single_sampler_done(ctx->cso);
/* viewport */
ctx->viewport.scale[0] = 0.5f * dst->width;
ctx->viewport.scale[1] = 0.5f * dst->height;
ctx->viewport.scale[2] = 0.5f;
ctx->viewport.scale[3] = 1.0f;
ctx->viewport.translate[0] = 0.5f * dst->width;
ctx->viewport.translate[1] = 0.5f * dst->height;
ctx->viewport.translate[2] = 0.5f;
ctx->viewport.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &ctx->viewport);
/* texture */
cso_set_fragment_sampler_views(ctx->cso, 1, &sampler_view);
if (ctx->fs[writemask] == NULL)
ctx->fs[writemask] =
util_make_fragment_tex_shader_writemask(pipe, TGSI_TEXTURE_2D,
TGSI_INTERPOLATE_LINEAR,
writemask);
/* shaders */
cso_set_fragment_shader_handle(ctx->cso, ctx->fs[writemask]);
cso_set_vertex_shader_handle(ctx->cso, ctx->vs);
/* drawing dest */
memset(&fb, 0, sizeof(fb));
fb.width = dst->width;
fb.height = dst->height;
fb.nr_cbufs = 1;
fb.cbufs[0] = dst;
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
offset = setup_vertex_data_tex(ctx,
(float) dstX0 / dst->width * 2.0f - 1.0f,
(float) dstY0 / dst->height * 2.0f - 1.0f,
(float) dstX1 / dst->width * 2.0f - 1.0f,
(float) dstY1 / dst->height * 2.0f - 1.0f,
s0, t0,
s1, t1,
z);
util_draw_vertex_buffer(ctx->pipe, ctx->vbuf, offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
/* restore state we changed */
cso_restore_blend(ctx->cso);
cso_restore_depth_stencil_alpha(ctx->cso);
cso_restore_rasterizer(ctx->cso);
cso_restore_samplers(ctx->cso);
cso_restore_fragment_sampler_views(ctx->cso);
cso_restore_viewport(ctx->cso);
cso_restore_framebuffer(ctx->cso);
cso_restore_fragment_shader(ctx->cso);
cso_restore_vertex_shader(ctx->cso);
cso_restore_clip(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
pipe_sampler_view_reference(&sampler_view, NULL);
}
void
util_blit_pixels(struct blit_state *ctx,
struct pipe_resource *src_tex,
struct pipe_subresource srcsub,
int srcX0, int srcY0,
int srcX1, int srcY1,
int srcZ,
struct pipe_surface *dst,
int dstX0, int dstY0,
int dstX1, int dstY1,
float z, uint filter )
{
util_blit_pixels_writemask( ctx, src_tex,
srcsub,
srcX0, srcY0,
srcX1, srcY1,
srcZ,
dst,
dstX0, dstY0,
dstX1, dstY1,
z, filter,
TGSI_WRITEMASK_XYZW );
}
/* Release vertex buffer at end of frame to avoid synchronous
* rendering.
*/
void util_blit_flush( struct blit_state *ctx )
{
pipe_resource_reference(&ctx->vbuf, NULL);
ctx->vbuf_slot = 0;
}
/**
* Copy pixel block from src texture to dst surface.
*
* XXX Should support selection of level.
* XXX need some control over blitting Z and/or stencil.
*/
void
util_blit_pixels_tex(struct blit_state *ctx,
struct pipe_sampler_view *src_sampler_view,
int srcX0, int srcY0,
int srcX1, int srcY1,
struct pipe_surface *dst,
int dstX0, int dstY0,
int dstX1, int dstY1,
float z, uint filter)
{
struct pipe_framebuffer_state fb;
float s0, t0, s1, t1;
unsigned offset;
struct pipe_resource *tex = src_sampler_view->texture;
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
assert(tex);
assert(tex->width0 != 0);
assert(tex->height0 != 0);
s0 = srcX0 / (float)tex->width0;
s1 = srcX1 / (float)tex->width0;
t0 = srcY0 / (float)tex->height0;
t1 = srcY1 / (float)tex->height0;
assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format,
PIPE_TEXTURE_2D,
dst->texture->nr_samples,
PIPE_BIND_RENDER_TARGET,
0));
/* save state (restored below) */
cso_save_blend(ctx->cso);
cso_save_depth_stencil_alpha(ctx->cso);
cso_save_rasterizer(ctx->cso);
cso_save_samplers(ctx->cso);
cso_save_fragment_sampler_views(ctx->cso);
cso_save_framebuffer(ctx->cso);
cso_save_fragment_shader(ctx->cso);
cso_save_vertex_shader(ctx->cso);
cso_save_clip(ctx->cso);
cso_save_vertex_elements(ctx->cso);
/* set misc state we care about */
cso_set_blend(ctx->cso, &ctx->blend);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->depthstencil);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_clip(ctx->cso, &ctx->clip);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
/* sampler */
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
cso_single_sampler_done(ctx->cso);
/* viewport */
ctx->viewport.scale[0] = 0.5f * dst->width;
ctx->viewport.scale[1] = 0.5f * dst->height;
ctx->viewport.scale[2] = 0.5f;
ctx->viewport.scale[3] = 1.0f;
ctx->viewport.translate[0] = 0.5f * dst->width;
ctx->viewport.translate[1] = 0.5f * dst->height;
ctx->viewport.translate[2] = 0.5f;
ctx->viewport.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &ctx->viewport);
/* texture */
cso_set_fragment_sampler_views(ctx->cso, 1, &src_sampler_view);
/* shaders */
cso_set_fragment_shader_handle(ctx->cso, ctx->fs[TGSI_WRITEMASK_XYZW]);
cso_set_vertex_shader_handle(ctx->cso, ctx->vs);
/* drawing dest */
memset(&fb, 0, sizeof(fb));
fb.width = dst->width;
fb.height = dst->height;
fb.nr_cbufs = 1;
fb.cbufs[0] = dst;
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
offset = setup_vertex_data_tex(ctx,
(float) dstX0 / dst->width * 2.0f - 1.0f,
(float) dstY0 / dst->height * 2.0f - 1.0f,
(float) dstX1 / dst->width * 2.0f - 1.0f,
(float) dstY1 / dst->height * 2.0f - 1.0f,
s0, t0, s1, t1,
z);
util_draw_vertex_buffer(ctx->pipe,
ctx->vbuf, offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
2); /* attribs/vert */
/* restore state we changed */
cso_restore_blend(ctx->cso);
cso_restore_depth_stencil_alpha(ctx->cso);
cso_restore_rasterizer(ctx->cso);
cso_restore_samplers(ctx->cso);
cso_restore_fragment_sampler_views(ctx->cso);
cso_restore_framebuffer(ctx->cso);
cso_restore_fragment_shader(ctx->cso);
cso_restore_vertex_shader(ctx->cso);
cso_restore_clip(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
}
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