/* Calculates the key for triangle-mode clipping. Non-triangle
* clipping keys use much less information and are computed on the
* fly.
*/
static void
calculate_clip_key_rast( const struct brw_context *brw,
const struct pipe_rasterizer_state *templ,
const struct brw_rasterizer_state *rast,
struct brw_clip_prog_key *key)
{
memset(key, 0, sizeof *key);
if (brw->chipset.is_igdng)
key->clip_mode = BRW_CLIPMODE_KERNEL_CLIP;
else
key->clip_mode = BRW_CLIPMODE_NORMAL;
key->do_flat_shading = templ->flatshade;
if (templ->cull_mode == PIPE_WINDING_BOTH) {
key->clip_mode = BRW_CLIPMODE_REJECT_ALL;
return;
}
key->fill_ccw = CLIP_CULL;
key->fill_cw = CLIP_CULL;
if (!(templ->cull_mode & PIPE_WINDING_CCW)) {
key->fill_ccw = translate_fill(templ->fill_ccw);
}
if (!(templ->cull_mode & PIPE_WINDING_CW)) {
key->fill_cw = translate_fill(templ->fill_cw);
}
if (key->fill_cw == CLIP_LINE ||
key->fill_ccw == CLIP_LINE ||
key->fill_cw == CLIP_POINT ||
key->fill_ccw == CLIP_POINT) {
key->do_unfilled = 1;
key->clip_mode = BRW_CLIPMODE_CLIP_NON_REJECTED;
}
key->offset_ccw = templ->offset_ccw;
key->offset_cw = templ->offset_cw;
if (templ->light_twoside && key->fill_cw != CLIP_CULL)
key->copy_bfc_cw = 1;
if (templ->light_twoside && key->fill_ccw != CLIP_CULL)
key->copy_bfc_ccw = 1;
}
static void update_raster_state( struct st_context *st )
{
struct gl_context *ctx = st->ctx;
struct pipe_rasterizer_state *raster = &st->state.rasterizer;
const struct gl_vertex_program *vertProg = ctx->VertexProgram._Current;
const struct gl_fragment_program *fragProg = ctx->FragmentProgram._Current;
uint i;
memset(raster, 0, sizeof(*raster));
/* _NEW_POLYGON, _NEW_BUFFERS
*/
{
raster->front_ccw = (ctx->Polygon.FrontFace == GL_CCW);
/*
* 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_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) {
/* Drawing to an FBO. The viewport will be inverted. */
raster->front_ccw ^= 1;
}
}
/* _NEW_LIGHT
*/
if (ctx->Light.ShadeModel == GL_FLAT)
raster->flatshade = 1;
if (ctx->Light.ProvokingVertex == GL_FIRST_VERTEX_CONVENTION_EXT)
raster->flatshade_first = 1;
/* _NEW_LIGHT | _NEW_PROGRAM */
raster->light_twoside = ctx->VertexProgram._TwoSideEnabled;
/*_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
*/
{
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.OffsetUnits != 0.0 ||
ctx->Polygon.OffsetFactor != 0.0) {
raster->offset_point = ctx->Polygon.OffsetPoint;
raster->offset_line = ctx->Polygon.OffsetLine;
raster->offset_tri = ctx->Polygon.OffsetFill;
}
if (ctx->Polygon.OffsetPoint ||
ctx->Polygon.OffsetLine ||
ctx->Polygon.OffsetFill) {
raster->offset_units = ctx->Polygon.OffsetUnits;
raster->offset_scale = ctx->Polygon.OffsetFactor;
}
if (ctx->Polygon.SmoothFlag)
raster->poly_smooth = 1;
if (ctx->Polygon.StippleFlag)
raster->poly_stipple_enable = 1;
/* _NEW_POINT
*/
raster->point_size = ctx->Point.Size;
if (!ctx->Point.PointSprite && ctx->Point.SmoothFlag)
raster->point_smooth = 1;
/* _NEW_POINT | _NEW_PROGRAM
*/
if (ctx->Point.PointSprite) {
/* origin */
if ((ctx->Point.SpriteOrigin == GL_UPPER_LEFT) ^
(st_fb_orientation(ctx->DrawBuffer) == 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.
*/
for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
if (ctx->Point.CoordReplace[i]) {
raster->sprite_coord_enable |= 1 << i;
}
}
if (fragProg->Base.InputsRead & FRAG_BIT_PNTC) {
raster->sprite_coord_enable |=
1 << (FRAG_ATTRIB_PNTC - FRAG_ATTRIB_TEX0);
}
raster->point_quad_rasterization = 1;
}
/* ST_NEW_VERTEX_PROGRAM
*/
if (vertProg) {
if (vertProg->Base.Id == 0) {
if (vertProg->Base.OutputsWritten & BITFIELD64_BIT(VERT_RESULT_PSIZ)) {
/* generated program which emits point size */
raster->point_size_per_vertex = TRUE;
}
}
else if (ctx->VertexProgram.PointSizeEnabled) {
/* user-defined program and GL_VERTEX_PROGRAM_POINT_SIZE set */
raster->point_size_per_vertex = ctx->VertexProgram.PointSizeEnabled;
}
}
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 */
if (ctx->Multisample._Enabled || st->force_msaa)
raster->multisample = 1;
/* _NEW_SCISSOR */
if (ctx->Scissor.Enabled)
raster->scissor = 1;
/* _NEW_FRAG_CLAMP */
raster->clamp_fragment_color = !st->clamp_frag_color_in_shader &&
ctx->Color._ClampFragmentColor;
raster->gl_rasterization_rules = 1;
/* _NEW_RASTERIZER_DISCARD */
raster->rasterizer_discard = ctx->RasterDiscard;
/* _NEW_TRANSFORM */
raster->depth_clip = ctx->Transform.DepthClamp == GL_FALSE;
raster->clip_plane_enable = ctx->Transform.ClipPlanesEnabled;
cso_set_rasterizer(st->cso_context, raster);
}
static void update_raster_state( struct st_context *st )
{
struct gl_context *ctx = st->ctx;
struct pipe_rasterizer_state *raster = &st->state.rasterizer;
const struct gl_vertex_program *vertProg = ctx->VertexProgram._Current;
const struct gl_fragment_program *fragProg = ctx->FragmentProgram._Current;
uint i;
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_fb_orientation(ctx->DrawBuffer) == 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 = ctx->VertexProgram._TwoSideEnabled;
/*_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_fb_orientation(ctx->DrawBuffer) == 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.
*/
for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
if (ctx->Point.CoordReplace[i]) {
raster->sprite_coord_enable |= 1 << i;
}
}
if (!st->needs_texcoord_semantic &&
fragProg->Base.InputsRead & 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->Base.Id == 0) {
if (vertProg->Base.OutputsWritten & 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->Base;
else if (ctx->TessEvalProgram._Current)
last = &ctx->TessEvalProgram._Current->Base;
else if (ctx->VertexProgram._Current)
last = &ctx->VertexProgram._Current->Base;
if (last)
raster->point_size_per_vertex =
!!(last->OutputsWritten & 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 &&
_mesa_is_multisample_enabled(ctx) &&
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_fb_orientation(ctx->DrawBuffer) == 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);
}
