/* Calculate interpolants for triangle and line rasterization.
*/
void
brw_upload_sf_prog(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
struct brw_sf_prog_key key;
if (!brw_state_dirty(brw,
_NEW_BUFFERS |
_NEW_HINT |
_NEW_LIGHT |
_NEW_POINT |
_NEW_POLYGON |
_NEW_PROGRAM |
_NEW_TRANSFORM,
BRW_NEW_BLORP |
BRW_NEW_FS_PROG_DATA |
BRW_NEW_REDUCED_PRIMITIVE |
BRW_NEW_VUE_MAP_GEOM_OUT))
return;
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
memset(&key, 0, sizeof(key));
/* Populate the key, noting state dependencies:
*/
/* BRW_NEW_VUE_MAP_GEOM_OUT */
key.attrs = brw->vue_map_geom_out.slots_valid;
/* BRW_NEW_REDUCED_PRIMITIVE */
switch (brw->reduced_primitive) {
case GL_TRIANGLES:
/* NOTE: We just use the edgeflag attribute as an indicator that
* unfilled triangles are active. We don't actually do the
* edgeflag testing here, it is already done in the clip
* program.
*/
if (key.attrs & BITFIELD64_BIT(VARYING_SLOT_EDGE))
key.primitive = BRW_SF_PRIM_UNFILLED_TRIS;
else
key.primitive = BRW_SF_PRIM_TRIANGLES;
break;
case GL_LINES:
key.primitive = BRW_SF_PRIM_LINES;
break;
case GL_POINTS:
key.primitive = BRW_SF_PRIM_POINTS;
break;
}
/* _NEW_TRANSFORM */
key.userclip_active = (ctx->Transform.ClipPlanesEnabled != 0);
/* _NEW_POINT */
key.do_point_sprite = ctx->Point.PointSprite;
if (key.do_point_sprite) {
key.point_sprite_coord_replace = ctx->Point.CoordReplace & 0xff;
}
if (brw->programs[MESA_SHADER_FRAGMENT]->info.inputs_read &
BITFIELD64_BIT(VARYING_SLOT_PNTC)) {
key.do_point_coord = 1;
}
/*
* Window coordinates in a FBO are inverted, which means point
* sprite origin must be inverted, too.
*/
if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo)
key.sprite_origin_lower_left = true;
/* BRW_NEW_FS_PROG_DATA */
const struct brw_wm_prog_data *wm_prog_data =
brw_wm_prog_data(brw->wm.base.prog_data);
if (wm_prog_data) {
key.contains_flat_varying = wm_prog_data->contains_flat_varying;
STATIC_ASSERT(sizeof(key.interp_mode) ==
sizeof(wm_prog_data->interp_mode));
memcpy(key.interp_mode, wm_prog_data->interp_mode,
sizeof(key.interp_mode));
}
/* _NEW_LIGHT | _NEW_PROGRAM */
key.do_twoside_color = _mesa_vertex_program_two_side_enabled(ctx);
/* _NEW_POLYGON */
if (key.do_twoside_color) {
/* If we're rendering to a FBO, we have to invert the polygon
* face orientation, just as we invert the viewport in
* sf_unit_create_from_key().
*/
key.frontface_ccw = brw->polygon_front_bit == render_to_fbo;
}
if (!brw_search_cache(&brw->cache, BRW_CACHE_SF_PROG,
&key, sizeof(key),
&brw->sf.prog_offset, &brw->sf.prog_data)) {
compile_sf_prog( brw, &key );
}
}
void st_update_rasterizer( struct st_context *st )
{
struct gl_context *ctx = st->ctx;
struct pipe_rasterizer_state *raster = &st->state.rasterizer;
const struct gl_program *vertProg = ctx->VertexProgram._Current;
const struct gl_program *fragProg = ctx->FragmentProgram._Current;
memset(raster, 0, sizeof(*raster));
/* _NEW_POLYGON, _NEW_BUFFERS
*/
{
raster->front_ccw = (ctx->Polygon.FrontFace == GL_CCW);
/* _NEW_TRANSFORM */
if (ctx->Transform.ClipOrigin == GL_UPPER_LEFT) {
raster->front_ccw ^= 1;
}
/*
* Gallium's surfaces are Y=0=TOP orientation. OpenGL is the
* opposite. Window system surfaces are Y=0=TOP. Mesa's FBOs
* must match OpenGL conventions so FBOs use Y=0=BOTTOM. In that
* case, we must invert Y and flip the notion of front vs. back.
*/
if (st->state.fb_orientation == Y_0_BOTTOM) {
/* Drawing to an FBO. The viewport will be inverted. */
raster->front_ccw ^= 1;
}
}
/* _NEW_LIGHT
*/
raster->flatshade = ctx->Light.ShadeModel == GL_FLAT;
raster->flatshade_first = ctx->Light.ProvokingVertex ==
GL_FIRST_VERTEX_CONVENTION_EXT;
/* _NEW_LIGHT | _NEW_PROGRAM */
raster->light_twoside = _mesa_vertex_program_two_side_enabled(ctx);
/*_NEW_LIGHT | _NEW_BUFFERS */
raster->clamp_vertex_color = !st->clamp_vert_color_in_shader &&
ctx->Light._ClampVertexColor;
/* _NEW_POLYGON
*/
if (ctx->Polygon.CullFlag) {
switch (ctx->Polygon.CullFaceMode) {
case GL_FRONT:
raster->cull_face = PIPE_FACE_FRONT;
break;
case GL_BACK:
raster->cull_face = PIPE_FACE_BACK;
break;
case GL_FRONT_AND_BACK:
raster->cull_face = PIPE_FACE_FRONT_AND_BACK;
break;
}
}
else {
raster->cull_face = PIPE_FACE_NONE;
}
/* _NEW_POLYGON
*/
{
if (ST_DEBUG & DEBUG_WIREFRAME) {
raster->fill_front = PIPE_POLYGON_MODE_LINE;
raster->fill_back = PIPE_POLYGON_MODE_LINE;
}
else {
raster->fill_front = translate_fill( ctx->Polygon.FrontMode );
raster->fill_back = translate_fill( ctx->Polygon.BackMode );
}
/* Simplify when culling is active:
*/
if (raster->cull_face & PIPE_FACE_FRONT) {
raster->fill_front = raster->fill_back;
}
if (raster->cull_face & PIPE_FACE_BACK) {
raster->fill_back = raster->fill_front;
}
}
/* _NEW_POLYGON
*/
if (ctx->Polygon.OffsetPoint ||
ctx->Polygon.OffsetLine ||
ctx->Polygon.OffsetFill) {
raster->offset_point = ctx->Polygon.OffsetPoint;
raster->offset_line = ctx->Polygon.OffsetLine;
raster->offset_tri = ctx->Polygon.OffsetFill;
raster->offset_units = ctx->Polygon.OffsetUnits;
raster->offset_scale = ctx->Polygon.OffsetFactor;
raster->offset_clamp = ctx->Polygon.OffsetClamp;
}
raster->poly_smooth = ctx->Polygon.SmoothFlag;
raster->poly_stipple_enable = ctx->Polygon.StippleFlag;
/* _NEW_POINT
*/
raster->point_size = ctx->Point.Size;
raster->point_smooth = !ctx->Point.PointSprite && ctx->Point.SmoothFlag;
/* _NEW_POINT | _NEW_PROGRAM
*/
if (ctx->Point.PointSprite) {
/* origin */
if ((ctx->Point.SpriteOrigin == GL_UPPER_LEFT) ^
(st->state.fb_orientation == Y_0_BOTTOM))
raster->sprite_coord_mode = PIPE_SPRITE_COORD_UPPER_LEFT;
else
raster->sprite_coord_mode = PIPE_SPRITE_COORD_LOWER_LEFT;
/* Coord replacement flags. If bit 'k' is set that means
* that we need to replace GENERIC[k] attrib with an automatically
* computed texture coord.
*/
raster->sprite_coord_enable = ctx->Point.CoordReplace &
((1u << MAX_TEXTURE_COORD_UNITS) - 1);
if (!st->needs_texcoord_semantic &&
fragProg->info.inputs_read & VARYING_BIT_PNTC) {
raster->sprite_coord_enable |=
1 << st_get_generic_varying_index(st, VARYING_SLOT_PNTC);
}
raster->point_quad_rasterization = 1;
}
/* ST_NEW_VERTEX_PROGRAM
*/
if (vertProg) {
if (vertProg->Id == 0) {
if (vertProg->info.outputs_written &
BITFIELD64_BIT(VARYING_SLOT_PSIZ)) {
/* generated program which emits point size */
raster->point_size_per_vertex = TRUE;
}
}
else if (ctx->API != API_OPENGLES2) {
/* PointSizeEnabled is always set in ES2 contexts */
raster->point_size_per_vertex = ctx->VertexProgram.PointSizeEnabled;
}
else {
/* ST_NEW_TESSEVAL_PROGRAM | ST_NEW_GEOMETRY_PROGRAM */
/* We have to check the last bound stage and see if it writes psize */
struct gl_program *last = NULL;
if (ctx->GeometryProgram._Current)
last = ctx->GeometryProgram._Current;
else if (ctx->TessEvalProgram._Current)
last = ctx->TessEvalProgram._Current;
else if (ctx->VertexProgram._Current)
last = ctx->VertexProgram._Current;
if (last)
raster->point_size_per_vertex =
!!(last->info.outputs_written &
BITFIELD64_BIT(VARYING_SLOT_PSIZ));
}
}
if (!raster->point_size_per_vertex) {
/* clamp size now */
raster->point_size = CLAMP(ctx->Point.Size,
ctx->Point.MinSize,
ctx->Point.MaxSize);
}
/* _NEW_LINE
*/
raster->line_smooth = ctx->Line.SmoothFlag;
if (ctx->Line.SmoothFlag) {
raster->line_width = CLAMP(ctx->Line.Width,
ctx->Const.MinLineWidthAA,
ctx->Const.MaxLineWidthAA);
}
else {
raster->line_width = CLAMP(ctx->Line.Width,
ctx->Const.MinLineWidth,
ctx->Const.MaxLineWidth);
}
raster->line_stipple_enable = ctx->Line.StippleFlag;
raster->line_stipple_pattern = ctx->Line.StipplePattern;
/* GL stipple factor is in [1,256], remap to [0, 255] here */
raster->line_stipple_factor = ctx->Line.StippleFactor - 1;
/* _NEW_MULTISAMPLE */
raster->multisample = _mesa_is_multisample_enabled(ctx);
/* _NEW_MULTISAMPLE | _NEW_BUFFERS */
raster->force_persample_interp =
!st->force_persample_in_shader &&
raster->multisample &&
ctx->Multisample.SampleShading &&
ctx->Multisample.MinSampleShadingValue *
_mesa_geometric_samples(ctx->DrawBuffer) > 1;
/* _NEW_SCISSOR */
raster->scissor = !!ctx->Scissor.EnableFlags;
/* _NEW_FRAG_CLAMP */
raster->clamp_fragment_color = !st->clamp_frag_color_in_shader &&
ctx->Color._ClampFragmentColor;
raster->half_pixel_center = 1;
if (st->state.fb_orientation == Y_0_TOP)
raster->bottom_edge_rule = 1;
/* _NEW_TRANSFORM */
if (ctx->Transform.ClipOrigin == GL_UPPER_LEFT)
raster->bottom_edge_rule ^= 1;
/* ST_NEW_RASTERIZER */
raster->rasterizer_discard = ctx->RasterDiscard;
if (st->edgeflag_culls_prims) {
/* All edge flags are FALSE. Cull the affected faces. */
if (raster->fill_front != PIPE_POLYGON_MODE_FILL)
raster->cull_face |= PIPE_FACE_FRONT;
if (raster->fill_back != PIPE_POLYGON_MODE_FILL)
raster->cull_face |= PIPE_FACE_BACK;
}
/* _NEW_TRANSFORM */
raster->depth_clip = !ctx->Transform.DepthClamp;
raster->clip_plane_enable = ctx->Transform.ClipPlanesEnabled;
raster->clip_halfz = (ctx->Transform.ClipDepthMode == GL_ZERO_TO_ONE);
cso_set_rasterizer(st->cso_context, raster);
}
