/**
* Prepare the renderer for textured drawing.
*/
VGboolean renderer_drawtex_begin(struct renderer *renderer,
struct pipe_sampler_view *src)
{
assert(renderer->state == RENDERER_STATE_INIT);
if (!renderer_can_support(renderer, src->texture, PIPE_BIND_SAMPLER_VIEW))
return VG_FALSE;
cso_save_blend(renderer->cso);
cso_save_samplers(renderer->cso);
cso_save_fragment_sampler_views(renderer->cso);
cso_save_fragment_shader(renderer->cso);
cso_save_vertex_shader(renderer->cso);
renderer_set_blend(renderer, ~0);
renderer_set_samplers(renderer, 1, &src);
renderer_set_fs(renderer, RENDERER_FS_TEXTURE);
renderer_set_vs(renderer, RENDERER_VS_TEXTURE);
renderer_set_mvp(renderer, NULL);
/* remember the texture size */
renderer->u.drawtex.tex_width = src->texture->width0;
renderer->u.drawtex.tex_height = src->texture->height0;
renderer->state = RENDERER_STATE_DRAWTEX;
return VG_TRUE;
}
/**
* Save all the CSO state items specified by the state_mask bitmask
* of CSO_BIT_x flags.
*/
void
cso_save_state(struct cso_context *cso, unsigned state_mask)
{
assert(cso->saved_state == 0);
cso->saved_state = state_mask;
if (state_mask & CSO_BIT_AUX_VERTEX_BUFFER_SLOT)
cso_save_aux_vertex_buffer_slot(cso);
if (state_mask & CSO_BIT_BLEND)
cso_save_blend(cso);
if (state_mask & CSO_BIT_DEPTH_STENCIL_ALPHA)
cso_save_depth_stencil_alpha(cso);
if (state_mask & CSO_BIT_FRAGMENT_SAMPLERS)
cso_save_fragment_samplers(cso);
if (state_mask & CSO_BIT_FRAGMENT_SAMPLER_VIEWS)
cso_save_fragment_sampler_views(cso);
if (state_mask & CSO_BIT_FRAGMENT_SHADER)
cso_save_fragment_shader(cso);
if (state_mask & CSO_BIT_FRAMEBUFFER)
cso_save_framebuffer(cso);
if (state_mask & CSO_BIT_GEOMETRY_SHADER)
cso_save_geometry_shader(cso);
if (state_mask & CSO_BIT_MIN_SAMPLES)
cso_save_min_samples(cso);
if (state_mask & CSO_BIT_RASTERIZER)
cso_save_rasterizer(cso);
if (state_mask & CSO_BIT_RENDER_CONDITION)
cso_save_render_condition(cso);
if (state_mask & CSO_BIT_SAMPLE_MASK)
cso_save_sample_mask(cso);
if (state_mask & CSO_BIT_STENCIL_REF)
cso_save_stencil_ref(cso);
if (state_mask & CSO_BIT_STREAM_OUTPUTS)
cso_save_stream_outputs(cso);
if (state_mask & CSO_BIT_TESSCTRL_SHADER)
cso_save_tessctrl_shader(cso);
if (state_mask & CSO_BIT_TESSEVAL_SHADER)
cso_save_tesseval_shader(cso);
if (state_mask & CSO_BIT_VERTEX_ELEMENTS)
cso_save_vertex_elements(cso);
if (state_mask & CSO_BIT_VERTEX_SHADER)
cso_save_vertex_shader(cso);
if (state_mask & CSO_BIT_VIEWPORT)
cso_save_viewport(cso);
if (state_mask & CSO_BIT_PAUSE_QUERIES)
cso->pipe->set_active_query_state(cso->pipe, false);
}
/**
* Prepare the renderer for copying.
*/
VGboolean renderer_copy_begin(struct renderer *renderer,
struct pipe_surface *dst,
VGboolean y0_top,
struct pipe_sampler_view *src)
{
assert(renderer->state == RENDERER_STATE_INIT);
/* sanity check */
if (!renderer_can_support(renderer,
dst->texture, PIPE_BIND_RENDER_TARGET) ||
!renderer_can_support(renderer,
src->texture, PIPE_BIND_SAMPLER_VIEW))
return VG_FALSE;
cso_save_framebuffer(renderer->cso);
cso_save_viewport(renderer->cso);
cso_save_blend(renderer->cso);
cso_save_samplers(renderer->cso);
cso_save_fragment_sampler_views(renderer->cso);
cso_save_fragment_shader(renderer->cso);
cso_save_vertex_shader(renderer->cso);
renderer_set_target(renderer, dst, NULL, y0_top);
renderer_set_blend(renderer, ~0);
renderer_set_samplers(renderer, 1, &src);
renderer_set_fs(renderer, RENDERER_FS_TEXTURE);
renderer_set_vs(renderer, RENDERER_VS_TEXTURE);
renderer_set_mvp(renderer, NULL);
/* remember the texture size */
renderer->u.copy.tex_width = src->texture->width0;
renderer->u.copy.tex_height = src->texture->height0;
renderer->state = RENDERER_STATE_COPY;
return VG_TRUE;
}
/**
* Render a glBitmap by drawing a textured quad
*/
static void
draw_bitmap_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
GLsizei width, GLsizei height,
struct pipe_sampler_view *sv,
const GLfloat *color)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct cso_context *cso = st->cso_context;
struct st_fp_variant *fpv;
struct st_fp_variant_key key;
GLuint maxSize;
GLuint offset;
struct pipe_resource *vbuf = NULL;
memset(&key, 0, sizeof(key));
key.st = st->has_shareable_shaders ? NULL : st;
key.bitmap = GL_TRUE;
key.clamp_color = st->clamp_frag_color_in_shader &&
st->ctx->Color._ClampFragmentColor;
fpv = st_get_fp_variant(st, st->fp, &key);
/* As an optimization, Mesa's fragment programs will sometimes get the
* primary color from a statevar/constant rather than a varying variable.
* when that's the case, we need to ensure that we use the 'color'
* parameter and not the current attribute color (which may have changed
* through glRasterPos and state validation.
* So, we force the proper color here. Not elegant, but it works.
*/
{
GLfloat colorSave[4];
COPY_4V(colorSave, ctx->Current.Attrib[VERT_ATTRIB_COLOR0]);
COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], color);
st_upload_constants(st, st->fp->Base.Base.Parameters,
PIPE_SHADER_FRAGMENT);
COPY_4V(ctx->Current.Attrib[VERT_ATTRIB_COLOR0], colorSave);
}
/* limit checks */
/* XXX if the bitmap is larger than the max texture size, break
* it up into chunks.
*/
maxSize = 1 << (pipe->screen->get_param(pipe->screen,
PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
assert(width <= (GLsizei)maxSize);
assert(height <= (GLsizei)maxSize);
cso_save_rasterizer(cso);
cso_save_fragment_samplers(cso);
cso_save_fragment_sampler_views(cso);
cso_save_viewport(cso);
cso_save_fragment_shader(cso);
cso_save_stream_outputs(cso);
cso_save_vertex_shader(cso);
cso_save_tessctrl_shader(cso);
cso_save_tesseval_shader(cso);
cso_save_geometry_shader(cso);
cso_save_vertex_elements(cso);
cso_save_aux_vertex_buffer_slot(cso);
/* rasterizer state: just scissor */
st->bitmap.rasterizer.scissor = ctx->Scissor.EnableFlags & 1;
cso_set_rasterizer(cso, &st->bitmap.rasterizer);
/* fragment shader state: TEX lookup program */
cso_set_fragment_shader_handle(cso, fpv->driver_shader);
/* vertex shader state: position + texcoord pass-through */
cso_set_vertex_shader_handle(cso, st->bitmap.vs);
/* disable other shaders */
cso_set_tessctrl_shader_handle(cso, NULL);
cso_set_tesseval_shader_handle(cso, NULL);
cso_set_geometry_shader_handle(cso, NULL);
/* user samplers, plus our bitmap sampler */
{
struct pipe_sampler_state *samplers[PIPE_MAX_SAMPLERS];
uint num = MAX2(fpv->bitmap_sampler + 1,
st->state.num_samplers[PIPE_SHADER_FRAGMENT]);
uint i;
for (i = 0; i < st->state.num_samplers[PIPE_SHADER_FRAGMENT]; i++) {
samplers[i] = &st->state.samplers[PIPE_SHADER_FRAGMENT][i];
}
samplers[fpv->bitmap_sampler] =
&st->bitmap.samplers[sv->texture->target != PIPE_TEXTURE_RECT];
cso_set_samplers(cso, PIPE_SHADER_FRAGMENT, num,
(const struct pipe_sampler_state **) samplers);
}
/* user textures, plus the bitmap texture */
{
struct pipe_sampler_view *sampler_views[PIPE_MAX_SAMPLERS];
uint num = MAX2(fpv->bitmap_sampler + 1,
st->state.num_sampler_views[PIPE_SHADER_FRAGMENT]);
memcpy(sampler_views, st->state.sampler_views[PIPE_SHADER_FRAGMENT],
sizeof(sampler_views));
sampler_views[fpv->bitmap_sampler] = sv;
cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num, sampler_views);
}
/* viewport state: viewport matching window dims */
{
const GLboolean invert = st->state.fb_orientation == Y_0_TOP;
const GLfloat width = (GLfloat)st->state.framebuffer.width;
const GLfloat height = (GLfloat)st->state.framebuffer.height;
struct pipe_viewport_state vp;
vp.scale[0] = 0.5f * width;
vp.scale[1] = height * (invert ? -0.5f : 0.5f);
vp.scale[2] = 0.5f;
vp.translate[0] = 0.5f * width;
vp.translate[1] = 0.5f * height;
vp.translate[2] = 0.5f;
cso_set_viewport(cso, &vp);
}
cso_set_vertex_elements(cso, 3, st->velems_util_draw);
cso_set_stream_outputs(st->cso_context, 0, NULL, NULL);
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
z = z * 2.0f - 1.0f;
/* draw textured quad */
setup_bitmap_vertex_data(st, sv->texture->target != PIPE_TEXTURE_RECT,
x, y, width, height, z, color, &vbuf, &offset);
if (vbuf) {
util_draw_vertex_buffer(pipe, st->cso_context, vbuf,
cso_get_aux_vertex_buffer_slot(st->cso_context),
offset,
PIPE_PRIM_TRIANGLE_FAN,
4, /* verts */
3); /* attribs/vert */
}
/* restore state */
cso_restore_rasterizer(cso);
cso_restore_fragment_samplers(cso);
cso_restore_fragment_sampler_views(cso);
cso_restore_viewport(cso);
cso_restore_fragment_shader(cso);
cso_restore_vertex_shader(cso);
cso_restore_tessctrl_shader(cso);
cso_restore_tesseval_shader(cso);
cso_restore_geometry_shader(cso);
cso_restore_vertex_elements(cso);
cso_restore_aux_vertex_buffer_slot(cso);
cso_restore_stream_outputs(cso);
pipe_resource_reference(&vbuf, NULL);
/* We uploaded modified constants, need to invalidate them. */
st->dirty.mesa |= _NEW_PROGRAM_CONSTANTS;
}
static void
draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z,
GLsizei width, GLsizei height,
GLfloat zoomX, GLfloat zoomY,
struct pipe_sampler_view **sv,
int num_sampler_view,
void *driver_vp,
void *driver_fp,
const GLfloat *color,
GLboolean invertTex,
GLboolean write_depth, GLboolean write_stencil)
{
struct st_context *st = st_context(ctx);
struct pipe_context *pipe = st->pipe;
struct cso_context *cso = st->cso_context;
GLfloat x0, y0, x1, y1;
GLsizei maxSize;
boolean normalized = sv[0]->texture->target != PIPE_TEXTURE_RECT;
/* limit checks */
/* XXX if DrawPixels image is larger than max texture size, break
* it up into chunks.
*/
maxSize = 1 << (pipe->screen->get_param(pipe->screen,
PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1);
assert(width <= maxSize);
assert(height <= maxSize);
cso_save_rasterizer(cso);
cso_save_viewport(cso);
cso_save_samplers(cso);
cso_save_fragment_sampler_views(cso);
cso_save_fragment_shader(cso);
cso_save_vertex_shader(cso);
cso_save_vertex_elements(cso);
cso_save_vertex_buffers(cso);
if (write_stencil) {
cso_save_depth_stencil_alpha(cso);
cso_save_blend(cso);
}
/* rasterizer state: just scissor */
{
struct pipe_rasterizer_state rasterizer;
memset(&rasterizer, 0, sizeof(rasterizer));
rasterizer.clamp_fragment_color = ctx->Color._ClampFragmentColor;
rasterizer.gl_rasterization_rules = 1;
rasterizer.scissor = ctx->Scissor.Enabled;
cso_set_rasterizer(cso, &rasterizer);
}
if (write_stencil) {
/* Stencil writing bypasses the normal fragment pipeline to
* disable color writing and set stencil test to always pass.
*/
struct pipe_depth_stencil_alpha_state dsa;
struct pipe_blend_state blend;
/* depth/stencil */
memset(&dsa, 0, sizeof(dsa));
dsa.stencil[0].enabled = 1;
dsa.stencil[0].func = PIPE_FUNC_ALWAYS;
dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff;
dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE;
if (write_depth) {
/* writing depth+stencil: depth test always passes */
dsa.depth.enabled = 1;
dsa.depth.writemask = ctx->Depth.Mask;
dsa.depth.func = PIPE_FUNC_ALWAYS;
}
cso_set_depth_stencil_alpha(cso, &dsa);
/* blend (colormask) */
memset(&blend, 0, sizeof(blend));
cso_set_blend(cso, &blend);
}
/* fragment shader state: TEX lookup program */
cso_set_fragment_shader_handle(cso, driver_fp);
/* vertex shader state: position + texcoord pass-through */
cso_set_vertex_shader_handle(cso, driver_vp);
/* texture sampling state: */
{
struct pipe_sampler_state sampler;
memset(&sampler, 0, sizeof(sampler));
sampler.wrap_s = PIPE_TEX_WRAP_CLAMP;
sampler.wrap_t = PIPE_TEX_WRAP_CLAMP;
sampler.wrap_r = PIPE_TEX_WRAP_CLAMP;
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.normalized_coords = normalized;
cso_single_sampler(cso, 0, &sampler);
if (num_sampler_view > 1) {
cso_single_sampler(cso, 1, &sampler);
}
cso_single_sampler_done(cso);
}
/* viewport state: viewport matching window dims */
{
const float w = (float) ctx->DrawBuffer->Width;
const float h = (float) ctx->DrawBuffer->Height;
struct pipe_viewport_state vp;
vp.scale[0] = 0.5f * w;
vp.scale[1] = -0.5f * h;
vp.scale[2] = 0.5f;
vp.scale[3] = 1.0f;
vp.translate[0] = 0.5f * w;
vp.translate[1] = 0.5f * h;
vp.translate[2] = 0.5f;
vp.translate[3] = 0.0f;
cso_set_viewport(cso, &vp);
}
cso_set_vertex_elements(cso, 3, st->velems_util_draw);
/* texture state: */
cso_set_fragment_sampler_views(cso, num_sampler_view, sv);
/* Compute Gallium window coords (y=0=top) with pixel zoom.
* Recall that these coords are transformed by the current
* vertex shader and viewport transformation.
*/
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY);
invertTex = !invertTex;
}
x0 = (GLfloat) x;
x1 = x + width * ctx->Pixel.ZoomX;
y0 = (GLfloat) y;
y1 = y + height * ctx->Pixel.ZoomY;
/* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */
z = z * 2.0 - 1.0;
draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex,
normalized ? ((GLfloat) width / sv[0]->texture->width0) : (GLfloat)width,
normalized ? ((GLfloat) height / sv[0]->texture->height0) : (GLfloat)height);
/* restore state */
cso_restore_rasterizer(cso);
cso_restore_viewport(cso);
cso_restore_samplers(cso);
cso_restore_fragment_sampler_views(cso);
cso_restore_fragment_shader(cso);
cso_restore_vertex_shader(cso);
cso_restore_vertex_elements(cso);
cso_restore_vertex_buffers(cso);
if (write_stencil) {
cso_restore_depth_stencil_alpha(cso);
cso_restore_blend(cso);
}
}
/**
* Prepare the renderer for image filtering.
*/
VGboolean renderer_filter_begin(struct renderer *renderer,
struct pipe_resource *dst,
VGboolean y0_top,
VGbitfield channel_mask,
const struct pipe_sampler_state **samplers,
struct pipe_sampler_view **views,
VGint num_samplers,
void *fs,
const void *const_buffer,
VGint const_buffer_len)
{
struct pipe_surface *surf, surf_tmpl;
assert(renderer->state == RENDERER_STATE_INIT);
if (!fs)
return VG_FALSE;
if (!renderer_can_support(renderer, dst, PIPE_BIND_RENDER_TARGET))
return VG_FALSE;
u_surface_default_template(&surf_tmpl, dst,
PIPE_BIND_RENDER_TARGET);
surf = renderer->pipe->create_surface(renderer->pipe, dst, &surf_tmpl);
if (!surf)
return VG_FALSE;
cso_save_framebuffer(renderer->cso);
cso_save_viewport(renderer->cso);
cso_save_blend(renderer->cso);
/* set the image as the target */
renderer_set_target(renderer, surf, NULL, y0_top);
pipe_surface_reference(&surf, NULL);
renderer_set_blend(renderer, channel_mask);
if (num_samplers) {
struct pipe_resource *tex;
cso_save_samplers(renderer->cso);
cso_save_fragment_sampler_views(renderer->cso);
cso_save_fragment_shader(renderer->cso);
cso_save_vertex_shader(renderer->cso);
renderer_set_custom_fs(renderer, fs,
samplers, views, num_samplers,
const_buffer, const_buffer_len);
renderer_set_vs(renderer, RENDERER_VS_TEXTURE);
tex = views[0]->texture;
renderer->u.filter.tex_width = tex->width0;
renderer->u.filter.tex_height = tex->height0;
renderer->u.filter.use_sampler = VG_TRUE;
}
else {
cso_save_fragment_shader(renderer->cso);
renderer_set_custom_fs(renderer, fs, NULL, NULL, 0,
const_buffer, const_buffer_len);
renderer->u.filter.use_sampler = VG_FALSE;
}
renderer_set_mvp(renderer, NULL);
renderer->state = RENDERER_STATE_FILTER;
return VG_TRUE;
}
/**
* Copy pixel block from src texture to dst surface.
* The sampler view's first_level field indicates the source
* mipmap level to use.
* 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)
{
boolean normalized = src_sampler_view->texture->target != PIPE_TEXTURE_RECT;
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;
s1 = srcX1;
t0 = srcY0;
t1 = srcY1;
if(normalized)
{
/* normalize according to the mipmap level's size */
int level = src_sampler_view->u.tex.first_level;
float w = (float) u_minify(tex->width0, level);
float h = (float) u_minify(tex->height0, level);
s0 /= w;
s1 /= w;
t0 /= h;
t1 /= h;
}
assert(ctx->pipe->screen->is_format_supported(ctx->pipe->screen, dst->format,
PIPE_TEXTURE_2D,
dst->texture->nr_samples,
PIPE_BIND_RENDER_TARGET));
/* 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_stream_outputs(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_geometry_shader(ctx->cso);
cso_save_vertex_elements(ctx->cso);
cso_save_vertex_buffers(ctx->cso);
/* set misc state we care about */
cso_set_blend(ctx->cso, &ctx->blend_write_color);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_keep_depthstencil);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, 0);
/* sampler */
ctx->sampler.normalized_coords = normalized;
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 */
set_fragment_shader(ctx, TGSI_WRITEMASK_XYZW,
src_sampler_view->texture->target);
set_vertex_shader(ctx);
cso_set_geometry_shader_handle(ctx->cso, NULL);
/* 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->cso,
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_geometry_shader(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
cso_restore_vertex_buffers(ctx->cso);
cso_restore_stream_outputs(ctx->cso);
}
/**
* 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).
*/
void
util_blit_pixels(struct blit_state *ctx,
struct pipe_resource *src_tex,
unsigned src_level,
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, uint zs_writemask)
{
struct pipe_context *pipe = ctx->pipe;
struct pipe_screen *screen = pipe->screen;
enum pipe_format src_format, dst_format;
struct pipe_sampler_view *sampler_view = NULL;
struct pipe_sampler_view sv_templ;
struct pipe_surface *dst_surface;
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;
boolean normalized;
boolean is_stencil, is_depth, blit_depth, blit_stencil;
const struct util_format_description *src_desc =
util_format_description(src_tex->format);
assert(filter == PIPE_TEX_MIPFILTER_NEAREST ||
filter == PIPE_TEX_MIPFILTER_LINEAR);
assert(src_level <= src_tex->last_level);
/* do the regions overlap? */
overlap = src_tex == dst->texture &&
dst->u.tex.level == src_level &&
dst->u.tex.first_layer == srcZ0 &&
regions_overlap(srcX0, srcY0, srcX1, srcY1,
dstX0, dstY0, dstX1, dstY1);
src_format = util_format_linear(src_tex->format);
dst_format = util_format_linear(dst->format);
/* See whether we will blit depth or stencil. */
is_depth = util_format_has_depth(src_desc);
is_stencil = util_format_has_stencil(src_desc);
blit_depth = is_depth && (zs_writemask & BLIT_WRITEMASK_Z);
blit_stencil = is_stencil && (zs_writemask & BLIT_WRITEMASK_STENCIL);
assert((writemask && !zs_writemask && !is_depth && !is_stencil) ||
(!writemask && (blit_depth || blit_stencil)));
/*
* Check for simple case: no format conversion, no flipping, no stretching,
* no overlapping.
* Filter mode should not matter since there's no stretching.
*/
if (formats_compatible(src_format, dst_format) &&
is_stencil == blit_stencil &&
is_depth == blit_depth &&
srcX0 < srcX1 &&
dstX0 < dstX1 &&
srcY0 < srcY1 &&
dstY0 < dstY1 &&
(dstX1 - dstX0) == (srcX1 - srcX0) &&
(dstY1 - dstY0) == (srcY1 - srcY0) &&
!overlap) {
struct pipe_box src_box;
src_box.x = srcX0;
src_box.y = srcY0;
src_box.z = srcZ0;
src_box.width = srcW;
src_box.height = srcH;
src_box.depth = 1;
pipe->resource_copy_region(pipe,
dst->texture, dst->u.tex.level,
dstX0, dstY0, dst->u.tex.first_layer,/* dest */
src_tex, src_level,
&src_box);
return;
}
/* It's a mistake to call this function with a stencil format and
* without shader stencil export. We don't do software fallbacks here.
* Ignore stencil and only copy depth.
*/
if (blit_stencil && !ctx->has_stencil_export) {
blit_stencil = FALSE;
if (!blit_depth)
return;
}
if (dst_format == dst->format) {
dst_surface = dst;
} else {
struct pipe_surface templ = *dst;
templ.format = dst_format;
dst_surface = pipe->create_surface(pipe, dst->texture, &templ);
}
/* Create a temporary texture when src and dest alias.
*/
if (src_tex == dst_surface->texture &&
dst_surface->u.tex.level == src_level &&
dst_surface->u.tex.first_layer == srcZ0) {
/* Make a temporary texture which contains a copy of the source pixels.
* Then we'll sample from the temporary texture.
*/
struct pipe_resource texTemp;
struct pipe_resource *tex;
struct pipe_sampler_view sv_templ;
struct pipe_box src_box;
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 = ctx->internal_target;
texTemp.format = src_format;
texTemp.last_level = 0;
texTemp.width0 = srcW;
texTemp.height0 = srcH;
texTemp.depth0 = 1;
texTemp.array_size = 1;
texTemp.bind = PIPE_BIND_SAMPLER_VIEW;
tex = screen->resource_create(screen, &texTemp);
if (!tex)
return;
src_box.x = srcLeft;
src_box.y = srcTop;
src_box.z = srcZ0;
src_box.width = srcW;
src_box.height = srcH;
src_box.depth = 1;
/* load temp texture */
pipe->resource_copy_region(pipe,
tex, 0, 0, 0, 0, /* dest */
src_tex, src_level, &src_box);
normalized = tex->target != PIPE_TEXTURE_RECT;
if(normalized) {
s0 = 0.0f;
s1 = 1.0f;
t0 = 0.0f;
t1 = 1.0f;
}
else {
s0 = 0;
s1 = srcW;
t0 = 0;
t1 = srcH;
}
u_sampler_view_default_template(&sv_templ, tex, tex->format);
if (!blit_depth && blit_stencil) {
/* set a stencil-only format, e.g. Z24S8 --> X24S8 */
sv_templ.format = util_format_stencil_only(tex->format);
assert(sv_templ.format != PIPE_FORMAT_NONE);
}
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 {
/* Directly sample from the source resource/texture */
u_sampler_view_default_template(&sv_templ, src_tex, src_format);
if (!blit_depth && blit_stencil) {
/* set a stencil-only format, e.g. Z24S8 --> X24S8 */
sv_templ.format = util_format_stencil_only(src_format);
assert(sv_templ.format != PIPE_FORMAT_NONE);
}
sampler_view = pipe->create_sampler_view(pipe, src_tex, &sv_templ);
if (!sampler_view) {
return;
}
s0 = srcX0;
s1 = srcX1;
t0 = srcY0;
t1 = srcY1;
normalized = sampler_view->texture->target != PIPE_TEXTURE_RECT;
if(normalized)
{
s0 /= (float)(u_minify(sampler_view->texture->width0, src_level));
s1 /= (float)(u_minify(sampler_view->texture->width0, src_level));
t0 /= (float)(u_minify(sampler_view->texture->height0, src_level));
t1 /= (float)(u_minify(sampler_view->texture->height0, src_level));
}
}
assert(screen->is_format_supported(screen, sampler_view->format,
ctx->internal_target, sampler_view->texture->nr_samples,
PIPE_BIND_SAMPLER_VIEW));
assert(screen->is_format_supported(screen, dst_format, ctx->internal_target,
dst_surface->texture->nr_samples,
is_depth || is_stencil ? PIPE_BIND_DEPTH_STENCIL :
PIPE_BIND_RENDER_TARGET));
/* 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_stream_outputs(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_geometry_shader(ctx->cso);
cso_save_vertex_elements(ctx->cso);
cso_save_vertex_buffers(ctx->cso);
/* set misc state we care about */
if (writemask)
cso_set_blend(ctx->cso, &ctx->blend_write_color);
else
cso_set_blend(ctx->cso, &ctx->blend_keep_color);
cso_set_rasterizer(ctx->cso, &ctx->rasterizer);
cso_set_vertex_elements(ctx->cso, 2, ctx->velem);
cso_set_stream_outputs(ctx->cso, 0, NULL, 0);
/* default sampler state */
ctx->sampler.normalized_coords = normalized;
ctx->sampler.min_img_filter = filter;
ctx->sampler.mag_img_filter = filter;
ctx->sampler.min_lod = src_level;
ctx->sampler.max_lod = src_level;
/* Depth stencil state, fragment shader and sampler setup depending on what
* we blit.
*/
if (blit_depth && blit_stencil) {
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
/* don't filter stencil */
ctx->sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
ctx->sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
cso_single_sampler(ctx->cso, 1, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_depthstencil);
set_depthstencil_fragment_shader(ctx, sampler_view->texture->target);
}
else if (blit_depth) {
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_depth);
set_depth_fragment_shader(ctx, sampler_view->texture->target);
}
else if (blit_stencil) {
/* don't filter stencil */
ctx->sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST;
ctx->sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST;
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_write_stencil);
set_stencil_fragment_shader(ctx, sampler_view->texture->target);
}
else { /* color */
cso_single_sampler(ctx->cso, 0, &ctx->sampler);
cso_set_depth_stencil_alpha(ctx->cso, &ctx->dsa_keep_depthstencil);
set_fragment_shader(ctx, writemask, sampler_view->texture->target);
}
cso_single_sampler_done(ctx->cso);
/* textures */
if (blit_depth && blit_stencil) {
/* Setup two samplers, one for depth and the other one for stencil. */
struct pipe_sampler_view templ;
struct pipe_sampler_view *views[2];
templ = *sampler_view;
templ.format = util_format_stencil_only(templ.format);
assert(templ.format != PIPE_FORMAT_NONE);
views[0] = sampler_view;
views[1] = pipe->create_sampler_view(pipe, views[0]->texture, &templ);
cso_set_fragment_sampler_views(ctx->cso, 2, views);
pipe_sampler_view_reference(&views[1], NULL);
}
else {
cso_set_fragment_sampler_views(ctx->cso, 1, &sampler_view);
}
/* viewport */
ctx->viewport.scale[0] = 0.5f * dst_surface->width;
ctx->viewport.scale[1] = 0.5f * dst_surface->height;
ctx->viewport.scale[2] = 0.5f;
ctx->viewport.scale[3] = 1.0f;
ctx->viewport.translate[0] = 0.5f * dst_surface->width;
ctx->viewport.translate[1] = 0.5f * dst_surface->height;
ctx->viewport.translate[2] = 0.5f;
ctx->viewport.translate[3] = 0.0f;
cso_set_viewport(ctx->cso, &ctx->viewport);
set_vertex_shader(ctx);
cso_set_geometry_shader_handle(ctx->cso, NULL);
/* drawing dest */
memset(&fb, 0, sizeof(fb));
fb.width = dst_surface->width;
fb.height = dst_surface->height;
if (blit_depth || blit_stencil) {
fb.zsbuf = dst_surface;
} else {
fb.nr_cbufs = 1;
fb.cbufs[0] = dst_surface;
}
cso_set_framebuffer(ctx->cso, &fb);
/* draw quad */
offset = setup_vertex_data_tex(ctx,
(float) dstX0 / dst_surface->width * 2.0f - 1.0f,
(float) dstY0 / dst_surface->height * 2.0f - 1.0f,
(float) dstX1 / dst_surface->width * 2.0f - 1.0f,
(float) dstY1 / dst_surface->height * 2.0f - 1.0f,
s0, t0,
s1, t1,
z);
if (ctx->vbuf) {
util_draw_vertex_buffer(ctx->pipe, ctx->cso, 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_geometry_shader(ctx->cso);
cso_restore_vertex_elements(ctx->cso);
cso_restore_vertex_buffers(ctx->cso);
cso_restore_stream_outputs(ctx->cso);
pipe_sampler_view_reference(&sampler_view, NULL);
if (dst_surface != dst)
pipe_surface_reference(&dst_surface, NULL);
}
