static void
upload_sf(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
uint32_t dw1 = 0, dw2 = 0, dw3 = 0;
float point_size;
dw1 = GEN6_SF_STATISTICS_ENABLE;
if (brw->sf.viewport_transform_enable)
dw1 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
/* _NEW_LINE */
uint32_t line_width_u3_7 = brw_get_line_width(brw);
if (brw->gen >= 9 || brw->is_cherryview) {
dw1 |= line_width_u3_7 << GEN9_SF_LINE_WIDTH_SHIFT;
} else {
dw2 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
}
if (ctx->Line.SmoothFlag) {
dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
}
/* _NEW_POINT - Clamp to ARB_point_parameters user limits */
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw3 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/* _NEW_PROGRAM | _NEW_POINT, BRW_NEW_VUE_MAP_GEOM_OUT */
if (use_state_point_size(brw))
dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
/* _NEW_POINT | _NEW_MULTISAMPLE */
if ((ctx->Point.SmoothFlag || _mesa_is_multisample_enabled(ctx)) &&
!ctx->Point.PointSprite) {
dw3 |= GEN8_SF_SMOOTH_POINT_ENABLE;
}
dw3 |= GEN6_SF_LINE_AA_MODE_TRUE;
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
dw3 |= (2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
(2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
(1 << GEN6_SF_LINE_PROVOKE_SHIFT);
} else {
dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
}
BEGIN_BATCH(4);
OUT_BATCH(_3DSTATE_SF << 16 | (4 - 2));
OUT_BATCH(dw1);
OUT_BATCH(dw2);
OUT_BATCH(dw3);
ADVANCE_BATCH();
}
static void
upload_sf_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
uint32_t dw1, dw2, dw3;
float point_size;
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
dw1 = GEN6_SF_STATISTICS_ENABLE;
if (brw->sf.viewport_transform_enable)
dw1 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
/* _NEW_BUFFERS */
dw1 |= (brw_depthbuffer_format(brw) << GEN7_SF_DEPTH_BUFFER_SURFACE_FORMAT_SHIFT);
/* _NEW_POLYGON */
if (ctx->Polygon._FrontBit == render_to_fbo)
dw1 |= GEN6_SF_WINDING_CCW;
if (ctx->Polygon.OffsetFill)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
if (ctx->Polygon.OffsetLine)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
if (ctx->Polygon.OffsetPoint)
dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
switch (ctx->Polygon.FrontMode) {
case GL_FILL:
dw1 |= GEN6_SF_FRONT_SOLID;
break;
case GL_LINE:
dw1 |= GEN6_SF_FRONT_WIREFRAME;
break;
case GL_POINT:
dw1 |= GEN6_SF_FRONT_POINT;
break;
default:
unreachable("not reached");
}
switch (ctx->Polygon.BackMode) {
case GL_FILL:
dw1 |= GEN6_SF_BACK_SOLID;
break;
case GL_LINE:
dw1 |= GEN6_SF_BACK_WIREFRAME;
break;
case GL_POINT:
dw1 |= GEN6_SF_BACK_POINT;
break;
default:
unreachable("not reached");
}
dw2 = 0;
if (ctx->Polygon.CullFlag) {
switch (ctx->Polygon.CullFaceMode) {
case GL_FRONT:
dw2 |= GEN6_SF_CULL_FRONT;
break;
case GL_BACK:
dw2 |= GEN6_SF_CULL_BACK;
break;
case GL_FRONT_AND_BACK:
dw2 |= GEN6_SF_CULL_BOTH;
break;
default:
unreachable("not reached");
}
} else {
dw2 |= GEN6_SF_CULL_NONE;
}
/* _NEW_SCISSOR _NEW_POLYGON BRW_NEW_GEOMETRY_PROGRAM BRW_NEW_PRIMITIVE */
if (ctx->Scissor.EnableFlags ||
is_drawing_points(brw) || is_drawing_lines(brw))
dw2 |= GEN6_SF_SCISSOR_ENABLE;
/* _NEW_LINE */
{
uint32_t line_width_u3_7 = brw_get_line_width(brw);
dw2 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
}
if (ctx->Line.SmoothFlag) {
dw2 |= GEN6_SF_LINE_AA_ENABLE;
dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
}
if (ctx->Line.StippleFlag && brw->is_haswell) {
dw2 |= HSW_SF_LINE_STIPPLE_ENABLE;
}
/* _NEW_MULTISAMPLE */
if (multisampled_fbo && ctx->Multisample.Enabled)
dw2 |= GEN6_SF_MSRAST_ON_PATTERN;
/* FINISHME: Last Pixel Enable? Vertex Sub Pixel Precision Select?
*/
dw3 = GEN6_SF_LINE_AA_MODE_TRUE;
/* _NEW_PROGRAM | _NEW_POINT */
if (!(ctx->VertexProgram.PointSizeEnabled || ctx->Point._Attenuated))
dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
/* Clamp to ARB_point_parameters user limits */
point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
/* Clamp to the hardware limits and convert to fixed point */
dw3 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
dw3 |=
(2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
(2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
(1 << GEN6_SF_LINE_PROVOKE_SHIFT);
} else {
dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
}
BEGIN_BATCH(7);
OUT_BATCH(_3DSTATE_SF << 16 | (7 - 2));
OUT_BATCH(dw1);
OUT_BATCH(dw2);
OUT_BATCH(dw3);
OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */
OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
OUT_BATCH_F(ctx->Polygon.OffsetClamp); /* global depth offset clamp */
ADVANCE_BATCH();
}
