#include "brw_util.h"
#include "main/macros.h"
#include "main/fbobject.h"
+#include "main/framebuffer.h"
#include "intel_batchbuffer.h"
/**
/* Find the VUE slot for this attribute. */
int slot = vue_map->varying_to_slot[fs_attr];
+ /* Viewport and Layer are stored in the VUE header. We need to override
+ * them to zero if earlier stages didn't write them, as GL requires that
+ * they read back as zero when not explicitly set.
+ */
+ if (fs_attr == VARYING_SLOT_VIEWPORT || fs_attr == VARYING_SLOT_LAYER) {
+ unsigned override =
+ ATTRIBUTE_0_OVERRIDE_X | ATTRIBUTE_0_OVERRIDE_W |
+ ATTRIBUTE_CONST_0000 << ATTRIBUTE_0_CONST_SOURCE_SHIFT;
+
+ if (!(vue_map->slots_valid & VARYING_BIT_LAYER))
+ override |= ATTRIBUTE_0_OVERRIDE_Y;
+ if (!(vue_map->slots_valid & VARYING_BIT_VIEWPORT))
+ override |= ATTRIBUTE_0_OVERRIDE_Z;
+
+ return override;
+ }
+
/* If there was only a back color written but not front, use back
* as the color instead of undefined
*/
calculate_attr_overrides(const struct brw_context *brw,
uint16_t *attr_overrides,
uint32_t *point_sprite_enables,
- uint32_t *flat_enables,
- uint32_t *urb_entry_read_length)
+ uint32_t *urb_entry_read_length,
+ uint32_t *urb_entry_read_offset)
{
- const int urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
uint32_t max_source_attr = 0;
*point_sprite_enables = 0;
- *flat_enables = 0;
- /* _NEW_LIGHT */
- bool shade_model_flat = brw->ctx.Light.ShadeModel == GL_FLAT;
+ *urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
+
+ /* BRW_NEW_FRAGMENT_PROGRAM
+ *
+ * If the fragment shader reads VARYING_SLOT_LAYER, then we need to pass in
+ * the full vertex header. Otherwise, we can program the SF to start
+ * reading at an offset of 1 (2 varying slots) to skip unnecessary data:
+ * - VARYING_SLOT_PSIZ and BRW_VARYING_SLOT_NDC on gen4-5
+ * - VARYING_SLOT_{PSIZ,LAYER} and VARYING_SLOT_POS on gen6+
+ */
+
+ bool fs_needs_vue_header = brw->fragment_program->Base.InputsRead &
+ (VARYING_BIT_LAYER | VARYING_BIT_VIEWPORT);
+
+ *urb_entry_read_offset = fs_needs_vue_header ? 0 : 1;
+
+ /* From the Ivybridge PRM, Vol 2 Part 1, 3DSTATE_SBE,
+ * description of dw10 Point Sprite Texture Coordinate Enable:
+ *
+ * "This field must be programmed to zero when non-point primitives
+ * are rendered."
+ *
+ * The SandyBridge PRM doesn't explicitly say that point sprite enables
+ * must be programmed to zero when rendering non-point primitives, but
+ * the IvyBridge PRM does, and if we don't, we get garbage.
+ *
+ * This is not required on Haswell, as the hardware ignores this state
+ * when drawing non-points -- although we do still need to be careful to
+ * correctly set the attr overrides.
+ *
+ * _NEW_POLYGON
+ * BRW_NEW_PRIMITIVE | BRW_NEW_GEOMETRY_PROGRAM | BRW_NEW_TES_PROG_DATA
+ */
+ bool drawing_points = is_drawing_points(brw);
/* Initialize all the attr_overrides to 0. In the loop below we'll modify
* just the ones that correspond to inputs used by the fs.
memset(attr_overrides, 0, 16*sizeof(*attr_overrides));
for (int attr = 0; attr < VARYING_SLOT_MAX; attr++) {
- enum glsl_interp_qualifier interp_qualifier =
- brw->fragment_program->InterpQualifier[attr];
- bool is_gl_Color = attr == VARYING_SLOT_COL0 || attr == VARYING_SLOT_COL1;
- /* CACHE_NEW_WM_PROG */
+ /* BRW_NEW_FS_PROG_DATA */
int input_index = brw->wm.prog_data->urb_setup[attr];
if (input_index < 0)
/* _NEW_POINT */
bool point_sprite = false;
- if (brw->ctx.Point.PointSprite &&
- (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) &&
- brw->ctx.Point.CoordReplace[attr - VARYING_SLOT_TEX0]) {
- point_sprite = true;
+ if (drawing_points) {
+ if (brw->ctx.Point.PointSprite &&
+ (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) &&
+ brw->ctx.Point.CoordReplace[attr - VARYING_SLOT_TEX0]) {
+ point_sprite = true;
+ }
+
+ if (attr == VARYING_SLOT_PNTC)
+ point_sprite = true;
+
+ if (point_sprite)
+ *point_sprite_enables |= (1 << input_index);
}
- if (attr == VARYING_SLOT_PNTC)
- point_sprite = true;
-
- if (point_sprite)
- *point_sprite_enables |= (1 << input_index);
-
- /* flat shading */
- if (interp_qualifier == INTERP_QUALIFIER_FLAT ||
- (shade_model_flat && is_gl_Color &&
- interp_qualifier == INTERP_QUALIFIER_NONE))
- *flat_enables |= (1 << input_index);
-
/* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */
uint16_t attr_override = point_sprite ? 0 :
get_attr_override(&brw->vue_map_geom_out,
- urb_entry_read_offset, attr,
+ *urb_entry_read_offset, attr,
brw->ctx.VertexProgram._TwoSideEnabled,
&max_source_attr);
upload_sf_state(struct brw_context *brw)
{
struct gl_context *ctx = &brw->ctx;
- /* CACHE_NEW_WM_PROG */
+ /* BRW_NEW_FS_PROG_DATA */
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 bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 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;
- dw2 = GEN6_SF_STATISTICS_ENABLE |
- GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
+ if (brw->sf.viewport_transform_enable)
+ dw2 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
dw3 = 0;
dw4 = 0;
/* _NEW_POLYGON */
- if ((ctx->Polygon.FrontFace == GL_CCW) ^ render_to_fbo)
+ if (ctx->Polygon._FrontBit == render_to_fbo)
dw2 |= GEN6_SF_WINDING_CCW;
if (ctx->Polygon.OffsetFill)
break;
default:
- assert(0);
- break;
+ unreachable("not reached");
}
switch (ctx->Polygon.BackMode) {
break;
default:
- assert(0);
- break;
+ unreachable("not reached");
}
- /* _NEW_SCISSOR */
- if (ctx->Scissor.Enabled)
+ /* _NEW_SCISSOR _NEW_POLYGON BRW_NEW_GEOMETRY_PROGRAM BRW_NEW_PRIMITIVE */
+ if (ctx->Scissor.EnableFlags ||
+ is_drawing_points(brw) || is_drawing_lines(brw))
dw3 |= GEN6_SF_SCISSOR_ENABLE;
/* _NEW_POLYGON */
dw3 |= GEN6_SF_CULL_BOTH;
break;
default:
- assert(0);
- break;
+ unreachable("not reached");
}
} 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;
+ uint32_t line_width_u3_7 = brw_get_line_width(brw);
dw3 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
}
if (ctx->Line.SmoothFlag) {
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);
+ dw4 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
/*
* Window coordinates in an FBO are inverted, which means point
(1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
}
- /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM |
- * CACHE_NEW_WM_PROG
+ /* 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;
+ uint32_t urb_entry_read_offset;
calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
- &flat_enables, &urb_entry_read_length);
+ &urb_entry_read_length, &urb_entry_read_offset);
dw1 |= (urb_entry_read_length << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
urb_entry_read_offset << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT);
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 */
+ OUT_BATCH_F(ctx->Polygon.OffsetClamp); /* 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(brw->wm.prog_data->flat_inputs);
OUT_BATCH(0); /* wrapshortest enables 0-7 */
OUT_BATCH(0); /* wrapshortest enables 8-15 */
ADVANCE_BATCH();
const struct brw_tracked_state gen6_sf_state = {
.dirty = {
- .mesa = (_NEW_LIGHT |
- _NEW_PROGRAM |
- _NEW_POLYGON |
- _NEW_LINE |
- _NEW_SCISSOR |
- _NEW_BUFFERS |
- _NEW_POINT |
- _NEW_MULTISAMPLE),
- .brw = (BRW_NEW_CONTEXT |
- BRW_NEW_FRAGMENT_PROGRAM |
- BRW_NEW_VUE_MAP_GEOM_OUT),
- .cache = CACHE_NEW_WM_PROG
+ .mesa = _NEW_BUFFERS |
+ _NEW_LIGHT |
+ _NEW_LINE |
+ _NEW_MULTISAMPLE |
+ _NEW_POINT |
+ _NEW_POLYGON |
+ _NEW_PROGRAM |
+ _NEW_SCISSOR,
+ .brw = BRW_NEW_BLORP |
+ BRW_NEW_CONTEXT |
+ BRW_NEW_FRAGMENT_PROGRAM |
+ BRW_NEW_FS_PROG_DATA |
+ BRW_NEW_GEOMETRY_PROGRAM |
+ BRW_NEW_PRIMITIVE |
+ BRW_NEW_TES_PROG_DATA |
+ BRW_NEW_VUE_MAP_GEOM_OUT,
},
.emit = upload_sf_state,
};
projects / mesa.git / blobdiff