#include "brw_defines.h"
#include "brw_util.h"
#include "main/macros.h"
+#include "main/fbobject.h"
#include "intel_batchbuffer.h"
/**
* 256-bit increments.
*/
uint32_t
-get_attr_override(struct brw_vue_map *vue_map, int urb_entry_read_offset,
- int fs_attr, bool two_side_color)
+get_attr_override(const struct brw_vue_map *vue_map, int urb_entry_read_offset,
+ int fs_attr, bool two_side_color, uint32_t *max_source_attr)
{
- int attr_override, slot;
- int vs_attr = _mesa_frag_attrib_to_vert_result(fs_attr);
- if (vs_attr < 0 || vs_attr == VERT_RESULT_HPOS) {
- /* These attributes will be overwritten by the fragment shader's
- * interpolation code (see emit_interp() in brw_wm_fp.c), so just let
- * them reference the first available attribute.
+ if (fs_attr == VARYING_SLOT_POS) {
+ /* This attribute will be overwritten by the fragment shader's
+ * interpolation code (see emit_interp() in brw_wm_fp.c), so just let it
+ * reference the first available attribute.
*/
return 0;
}
/* Find the VUE slot for this attribute. */
- slot = vue_map->vert_result_to_slot[vs_attr];
+ int slot = vue_map->varying_to_slot[fs_attr];
/* If there was only a back color written but not front, use back
* as the color instead of undefined
*/
- if (slot == -1 && vs_attr == VERT_RESULT_COL0)
- slot = vue_map->vert_result_to_slot[VERT_RESULT_BFC0];
- if (slot == -1 && vs_attr == VERT_RESULT_COL1)
- slot = vue_map->vert_result_to_slot[VERT_RESULT_BFC1];
+ if (slot == -1 && fs_attr == VARYING_SLOT_COL0)
+ slot = vue_map->varying_to_slot[VARYING_SLOT_BFC0];
+ if (slot == -1 && fs_attr == VARYING_SLOT_COL1)
+ slot = vue_map->varying_to_slot[VARYING_SLOT_BFC1];
if (slot == -1) {
/* This attribute does not exist in the VUE--that means that the vertex
- * shader did not write to it. Behavior is undefined in this case, so
+ * shader did not write to it. This means that either:
+ *
+ * (a) This attribute is a texture coordinate, and it is going to be
+ * replaced with point coordinates (as a consequence of a call to
+ * glTexEnvi(GL_POINT_SPRITE, GL_COORD_REPLACE, GL_TRUE)), so the
+ * hardware will ignore whatever attribute override we supply.
+ *
+ * (b) This attribute is read by the fragment shader but not written by
+ * the vertex shader, so its value is undefined. Therefore the
+ * attribute override we supply doesn't matter.
+ *
+ * In either case the attribute override we supply doesn't matter, so
* just reference the first available attribute.
*/
return 0;
* Each increment of urb_entry_read_offset represents a 256-bit value, so
* it counts for two 128-bit VUE slots.
*/
- attr_override = slot - 2 * urb_entry_read_offset;
- assert (attr_override >= 0 && attr_override < 32);
+ int source_attr = slot - 2 * urb_entry_read_offset;
+ assert(source_attr >= 0 && source_attr < 32);
/* If we are doing two-sided color, and the VUE slot following this one
* represents a back-facing color, then we need to instruct the SF unit to
* do back-facing swizzling.
*/
- if (two_side_color) {
- if (vue_map->slot_to_vert_result[slot] == VERT_RESULT_COL0 &&
- vue_map->slot_to_vert_result[slot+1] == VERT_RESULT_BFC0)
- attr_override |= (ATTRIBUTE_SWIZZLE_INPUTATTR_FACING << ATTRIBUTE_SWIZZLE_SHIFT);
- else if (vue_map->slot_to_vert_result[slot] == VERT_RESULT_COL1 &&
- vue_map->slot_to_vert_result[slot+1] == VERT_RESULT_BFC1)
- attr_override |= (ATTRIBUTE_SWIZZLE_INPUTATTR_FACING << ATTRIBUTE_SWIZZLE_SHIFT);
+ bool swizzling = two_side_color &&
+ ((vue_map->slot_to_varying[slot] == VARYING_SLOT_COL0 &&
+ vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC0) ||
+ (vue_map->slot_to_varying[slot] == VARYING_SLOT_COL1 &&
+ vue_map->slot_to_varying[slot+1] == VARYING_SLOT_BFC1));
+
+ /* Update max_source_attr. If swizzling, the SF will read this slot + 1. */
+ if (*max_source_attr < source_attr + swizzling)
+ *max_source_attr = source_attr + swizzling;
+
+ if (swizzling) {
+ return source_attr |
+ (ATTRIBUTE_SWIZZLE_INPUTATTR_FACING << ATTRIBUTE_SWIZZLE_SHIFT);
}
- return attr_override;
+ return source_attr;
}
static void
{
struct intel_context *intel = &brw->intel;
struct gl_context *ctx = &intel->ctx;
- struct brw_vue_map vue_map;
- uint32_t urb_entry_read_length;
- /* CACHE_NEW_VS_PROG */
- GLbitfield64 vs_outputs_written = brw->vs.prog_data->outputs_written;
/* BRW_NEW_FRAGMENT_PROGRAM */
uint32_t num_outputs = _mesa_bitcount_64(brw->fragment_program->Base.InputsRead);
/* _NEW_LIGHT */
uint32_t dw1, dw2, dw3, dw4, dw16, dw17;
int i;
/* _NEW_BUFFER */
- bool render_to_fbo = brw->intel.ctx.DrawBuffer->Name != 0;
+ bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
+ bool multisampled_fbo = ctx->DrawBuffer->Visual.samples > 1;
+
int attr = 0, input_index = 0;
int urb_entry_read_offset = 1;
float point_size;
- uint16_t attr_overrides[FRAG_ATTRIB_MAX];
- bool userclip_active;
+ uint16_t attr_overrides[VARYING_SLOT_MAX];
uint32_t point_sprite_origin;
- /* _NEW_TRANSFORM */
- userclip_active = (ctx->Transform.ClipPlanesEnabled != 0);
-
- brw_compute_vue_map(&vue_map, intel, userclip_active, vs_outputs_written);
- urb_entry_read_length = (vue_map.num_slots + 1)/2 - urb_entry_read_offset;
- if (urb_entry_read_length == 0) {
- /* Setting the URB entry read length to 0 causes undefined behavior, so
- * if we have no URB data to read, set it to 1.
- */
- urb_entry_read_length = 1;
- }
-
- dw1 =
- GEN6_SF_SWIZZLE_ENABLE |
- num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT |
- urb_entry_read_length << GEN6_SF_URB_ENTRY_READ_LENGTH_SHIFT |
- urb_entry_read_offset << GEN6_SF_URB_ENTRY_READ_OFFSET_SHIFT;
+ dw1 = GEN6_SF_SWIZZLE_ENABLE | num_outputs << GEN6_SF_NUM_OUTPUTS_SHIFT;
dw2 = GEN6_SF_STATISTICS_ENABLE |
GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
}
/* _NEW_LINE */
- dw3 |= U_FIXED(CLAMP(ctx->Line.Width, 0.0, 7.99), 7) <<
- GEN6_SF_LINE_WIDTH_SHIFT;
+ {
+ 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 ||
/* Create the mapping from the FS inputs we produce to the VS outputs
* they source from.
*/
- for (; attr < FRAG_ATTRIB_MAX; attr++) {
+ uint32_t max_source_attr = 0;
+ for (; attr < VARYING_SLOT_MAX; attr++) {
enum glsl_interp_qualifier interp_qualifier =
brw->fragment_program->InterpQualifier[attr];
- bool is_gl_Color = attr == FRAG_ATTRIB_COL0 || attr == FRAG_ATTRIB_COL1;
+ bool is_gl_Color = attr == VARYING_SLOT_COL0 || attr == VARYING_SLOT_COL1;
if (!(brw->fragment_program->Base.InputsRead & BITFIELD64_BIT(attr)))
continue;
/* _NEW_POINT */
if (ctx->Point.PointSprite &&
- (attr >= FRAG_ATTRIB_TEX0 && attr <= FRAG_ATTRIB_TEX7) &&
- ctx->Point.CoordReplace[attr - FRAG_ATTRIB_TEX0]) {
+ (attr >= VARYING_SLOT_TEX0 && attr <= VARYING_SLOT_TEX7) &&
+ ctx->Point.CoordReplace[attr - VARYING_SLOT_TEX0]) {
dw16 |= (1 << input_index);
}
- if (attr == FRAG_ATTRIB_PNTC)
+ if (attr == VARYING_SLOT_PNTC)
dw16 |= (1 << input_index);
/* flat shading */
*/
assert(input_index < 16 || attr == input_index);
- /* _NEW_LIGHT | _NEW_PROGRAM */
+ /* BRW_NEW_VUE_MAP_GEOM_OUT | _NEW_LIGHT | _NEW_PROGRAM */
attr_overrides[input_index++] =
- get_attr_override(&vue_map, urb_entry_read_offset, attr,
- ctx->VertexProgram._TwoSideEnabled);
+ get_attr_override(&brw->vue_map_geom_out,
+ urb_entry_read_offset, attr,
+ ctx->VertexProgram._TwoSideEnabled,
+ &max_source_attr);
}
- for (; input_index < FRAG_ATTRIB_MAX; input_index++)
+ for (; input_index < VARYING_SLOT_MAX; input_index++)
attr_overrides[input_index] = 0;
+ /* From the Sandy Bridge PRM, Volume 2, Part 1, documentation for
+ * 3DSTATE_SF DWord 1 bits 15:11, "Vertex URB Entry Read Length":
+ *
+ * "This field should be set to the minimum length required to read the
+ * maximum source attribute. The maximum source attribute is indicated
+ * by the maximum value of the enabled Attribute # Source Attribute if
+ * Attribute Swizzle Enable is set, Number of Output Attributes-1 if
+ * enable is not set.
+ * read_length = ceiling((max_source_attr + 1) / 2)
+ *
+ * [errata] Corruption/Hang possible if length programmed larger than
+ * recommended"
+ */
+ uint32_t urb_entry_read_length = ALIGN(max_source_attr + 1, 2) / 2;
+ 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);
_NEW_SCISSOR |
_NEW_BUFFERS |
_NEW_POINT |
- _NEW_TRANSFORM),
+ _NEW_MULTISAMPLE),
.brw = (BRW_NEW_CONTEXT |
- BRW_NEW_FRAGMENT_PROGRAM),
- .cache = CACHE_NEW_VS_PROG
+ BRW_NEW_FRAGMENT_PROGRAM |
+ BRW_NEW_VUE_MAP_GEOM_OUT)
},
.emit = upload_sf_state,
};
projects / mesa.git / blobdiff