static void
upload_sbe_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_FS_PROG_DATA */
uint32_t num_outputs = brw->wm.prog_data->num_varying_inputs;
uint32_t dw1;
uint32_t point_sprite_enables;
uint32_t flat_enables;
int i;
const int urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
uint16_t attr_overrides[16];
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
uint32_t point_sprite_origin;
/* FINISHME: Attribute Swizzle Control Mode? */
dw1 = GEN7_SBE_SWIZZLE_ENABLE | num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT;
/* _NEW_POINT
*
* Window coordinates in an FBO are inverted, which means point
* sprite origin must be inverted.
*/
if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT;
} else {
point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT;
}
dw1 |= point_sprite_origin;
/* BRW_NEW_VUE_MAP_GEOM_OUT | BRW_NEW_FRAGMENT_PROGRAM
* _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
*/
uint32_t urb_entry_read_length;
calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
&flat_enables, &urb_entry_read_length);
dw1 |= urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT;
BEGIN_BATCH(14);
OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2));
OUT_BATCH(dw1);
/* Output dwords 2 through 9 */
for (i = 0; i < 8; i++) {
OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
}
OUT_BATCH(point_sprite_enables); /* dw10 */
OUT_BATCH(flat_enables);
OUT_BATCH(0); /* wrapshortest enables 0-7 */
OUT_BATCH(0); /* wrapshortest enables 8-15 */
ADVANCE_BATCH();
}
static void
upload_sbe(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
/* BRW_NEW_FS_PROG_DATA */
uint32_t num_outputs = brw->wm.prog_data->num_varying_inputs;
uint16_t attr_overrides[VARYING_SLOT_MAX];
uint32_t urb_entry_read_length;
uint32_t urb_entry_read_offset;
uint32_t point_sprite_enables;
int sbe_cmd_length;
uint32_t dw1 =
GEN7_SBE_SWIZZLE_ENABLE |
num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT;
uint32_t dw4 = 0;
uint32_t dw5 = 0;
/* _NEW_BUFFERS */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
/* _NEW_POINT
*
* Window coordinates in an FBO are inverted, which means point
* sprite origin must be inverted.
*/
if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo)
dw1 |= GEN6_SF_POINT_SPRITE_LOWERLEFT;
else
dw1 |= GEN6_SF_POINT_SPRITE_UPPERLEFT;
/* BRW_NEW_VUE_MAP_GEOM_OUT | BRW_NEW_FRAGMENT_PROGRAM |
* _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM | BRW_NEW_FS_PROG_DATA
*/
calculate_attr_overrides(brw, attr_overrides,
&point_sprite_enables,
&urb_entry_read_length,
&urb_entry_read_offset);
/* Typically, the URB entry read length and offset should be programmed in
* 3DSTATE_VS and 3DSTATE_GS; SBE inherits it from the last active stage
* which produces geometry. However, we don't know the proper value until
* we call calculate_attr_overrides().
*
* To fit with our existing code, we override the inherited values and
* specify it here directly, as we did on previous generations.
*/
dw1 |=
urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN8_SBE_URB_ENTRY_READ_OFFSET_SHIFT |
GEN8_SBE_FORCE_URB_ENTRY_READ_LENGTH |
GEN8_SBE_FORCE_URB_ENTRY_READ_OFFSET;
if (brw->gen == 8) {
sbe_cmd_length = 4;
} else {
sbe_cmd_length = 6;
/* prepare the active component dwords */
int input_index = 0;
for (int attr = 0; attr < VARYING_SLOT_MAX; attr++) {
if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)))
continue;
assert(input_index < 32);
if (input_index < 16)
dw4 |= (GEN9_SBE_ACTIVE_COMPONENT_XYZW << (input_index << 1));
else
dw5 |= (GEN9_SBE_ACTIVE_COMPONENT_XYZW << ((input_index - 16) << 1));
++input_index;
}
}
BEGIN_BATCH(sbe_cmd_length);
OUT_BATCH(_3DSTATE_SBE << 16 | (sbe_cmd_length - 2));
OUT_BATCH(dw1);
OUT_BATCH(point_sprite_enables);
OUT_BATCH(brw->wm.prog_data->flat_inputs);
if (sbe_cmd_length >= 6) {
OUT_BATCH(dw4);
OUT_BATCH(dw5);
}
ADVANCE_BATCH();
BEGIN_BATCH(11);
OUT_BATCH(_3DSTATE_SBE_SWIZ << 16 | (11 - 2));
/* Output DWords 1 through 8: */
for (int i = 0; i < 8; i++) {
OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
}
OUT_BATCH(0); /* wrapshortest enables 0-7 */
OUT_BATCH(0); /* wrapshortest enables 8-15 */
ADVANCE_BATCH();
}
static void
upload_sf_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
/* CACHE_NEW_WM_PROG */
uint32_t num_outputs = brw->wm.prog_data->num_varying_inputs;
uint32_t dw1, dw2, dw3, dw4;
uint32_t point_sprite_enables;
uint32_t flat_enables;
int i;
/* _NEW_BUFFER */
bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1;
const int urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
float point_size;
uint16_t attr_overrides[16];
uint32_t point_sprite_origin;
dw1 = GEN6_SF_SWIZZLE_ENABLE | num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT;
dw2 = GEN6_SF_STATISTICS_ENABLE |
GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
dw3 = 0;
dw4 = 0;
/* _NEW_POLYGON */
if ((ctx->Polygon.FrontFace == GL_CCW) ^ render_to_fbo)
dw2 |= GEN6_SF_WINDING_CCW;
if (ctx->Polygon.OffsetFill)
dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
if (ctx->Polygon.OffsetLine)
dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
if (ctx->Polygon.OffsetPoint)
dw2 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
switch (ctx->Polygon.FrontMode) {
case GL_FILL:
dw2 |= GEN6_SF_FRONT_SOLID;
break;
case GL_LINE:
dw2 |= GEN6_SF_FRONT_WIREFRAME;
break;
case GL_POINT:
dw2 |= GEN6_SF_FRONT_POINT;
break;
default:
assert(0);
break;
}
switch (ctx->Polygon.BackMode) {
case GL_FILL:
dw2 |= GEN6_SF_BACK_SOLID;
break;
case GL_LINE:
dw2 |= GEN6_SF_BACK_WIREFRAME;
break;
case GL_POINT:
dw2 |= GEN6_SF_BACK_POINT;
break;
default:
assert(0);
break;
}
/* _NEW_SCISSOR */
if (ctx->Scissor.Enabled)
dw3 |= GEN6_SF_SCISSOR_ENABLE;
/* _NEW_POLYGON */
if (ctx->Polygon.CullFlag) {
switch (ctx->Polygon.CullFaceMode) {
case GL_FRONT:
dw3 |= GEN6_SF_CULL_FRONT;
break;
case GL_BACK:
dw3 |= GEN6_SF_CULL_BACK;
break;
case GL_FRONT_AND_BACK:
dw3 |= GEN6_SF_CULL_BOTH;
break;
default:
assert(0);
break;
}
} else {
dw3 |= GEN6_SF_CULL_NONE;
}
/* _NEW_LINE */
{
uint32_t line_width_u3_7 = U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7);
/* TODO: line width of 0 is not allowed when MSAA enabled */
if (line_width_u3_7 == 0)
line_width_u3_7 = 1;
dw3 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
}
if (ctx->Line.SmoothFlag) {
dw3 |= GEN6_SF_LINE_AA_ENABLE;
dw3 |= GEN6_SF_LINE_AA_MODE_TRUE;
dw3 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
}
/* _NEW_MULTISAMPLE */
if (multisampled_fbo && ctx->Multisample.Enabled)
dw3 |= GEN6_SF_MSRAST_ON_PATTERN;
/* _NEW_PROGRAM | _NEW_POINT */
if (!(ctx->VertexProgram.PointSizeEnabled ||
ctx->Point._Attenuated))
dw4 |= 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 */
dw4 |= U_FIXED(CLAMP(point_size, 0.125, 255.875), 3);
/*
* Window coordinates in an FBO are inverted, which means point
* sprite origin must be inverted, too.
*/
if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT;
} else {
point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT;
}
dw1 |= point_sprite_origin;
/* _NEW_LIGHT */
if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
dw4 |=
(2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
(2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
(1 << GEN6_SF_LINE_PROVOKE_SHIFT);
} else {
dw4 |=
(1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
}
/* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM |
* CACHE_NEW_WM_PROG
*/
uint32_t urb_entry_read_length;
calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
&flat_enables, &urb_entry_read_length);
dw1 |= (urb_entry_read_length << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT);
BEGIN_BATCH(20);
OUT_BATCH(_3DSTATE_SF << 16 | (20 - 2));
OUT_BATCH(dw1);
OUT_BATCH(dw2);
OUT_BATCH(dw3);
OUT_BATCH(dw4);
OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant. copied from gen4 */
OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
OUT_BATCH_F(0.0); /* XXX: global depth offset clamp */
for (i = 0; i < 8; i++) {
OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
}
OUT_BATCH(point_sprite_enables); /* dw16 */
OUT_BATCH(flat_enables);
OUT_BATCH(0); /* wrapshortest enables 0-7 */
OUT_BATCH(0); /* wrapshortest enables 8-15 */
ADVANCE_BATCH();
}
