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i965: Introduce a function to emit a SAMPLER_STATE structure.

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This simply assembles all the SAMPLER_STATE fields into their proper bit
locations.  Making it work on all generations was easy enough; some of
the fields are even in the same place.

Not used by anything yet, but will be soon.  I made it non-static so
BLORP can use it too.

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>
This commit is contained in:
Kenneth Graunke 2014-07-26 12:58:20 -07:00
parent 7cdb0a30fa
commit 05f0796eb6
2 changed files with 93 additions and 0 deletions
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75
src/mesa/drivers/dri/i965/brw_sampler_state.c
View file

@ -70,6 +70,81 @@ gen7_emit_sampler_state_pointers_xs(struct brw_context *brw,
ADVANCE_BATCH();
}
/**
* Emit a SAMPLER_STATE structure, given all the fields.
*/
void
brw_emit_sampler_state(struct brw_context *brw,
uint32_t *ss,
uint32_t batch_offset_for_sampler_state,
unsigned min_filter,
unsigned mag_filter,
unsigned mip_filter,
unsigned max_anisotropy,
unsigned address_rounding,
unsigned wrap_s,
unsigned wrap_t,
unsigned wrap_r,
unsigned min_lod,
unsigned max_lod,
int lod_bias,
unsigned base_level,
unsigned shadow_function,
bool non_normalized_coordinates,
uint32_t border_color_offset)
{
ss[0] = BRW_SAMPLER_LOD_PRECLAMP_ENABLE |
SET_FIELD(base_level, BRW_SAMPLER_BASE_MIPLEVEL) |
SET_FIELD(mip_filter, BRW_SAMPLER_MIP_FILTER) |
SET_FIELD(mag_filter, BRW_SAMPLER_MAG_FILTER) |
SET_FIELD(min_filter, BRW_SAMPLER_MIN_FILTER);
ss[2] = border_color_offset;
if (brw->gen < 6) {
ss[2] += brw->batch.bo->offset64; /* reloc */
drm_intel_bo_emit_reloc(brw->batch.bo,
batch_offset_for_sampler_state + 8,
brw->batch.bo, border_color_offset,
I915_GEM_DOMAIN_SAMPLER, 0);
}
ss[3] = SET_FIELD(max_anisotropy, BRW_SAMPLER_MAX_ANISOTROPY) |
SET_FIELD(address_rounding, BRW_SAMPLER_ADDRESS_ROUNDING);
if (brw->gen >= 7) {
ss[0] |= SET_FIELD(lod_bias & 0x1fff, GEN7_SAMPLER_LOD_BIAS);
if (min_filter == BRW_MAPFILTER_ANISOTROPIC)
ss[0] |= GEN7_SAMPLER_EWA_ANISOTROPIC_ALGORIHTM;
ss[1] = SET_FIELD(min_lod, GEN7_SAMPLER_MIN_LOD) |
SET_FIELD(max_lod, GEN7_SAMPLER_MAX_LOD) |
SET_FIELD(shadow_function, GEN7_SAMPLER_SHADOW_FUNCTION);
ss[3] |= SET_FIELD(wrap_s, BRW_SAMPLER_TCX_WRAP_MODE) |
SET_FIELD(wrap_t, BRW_SAMPLER_TCY_WRAP_MODE) |
SET_FIELD(wrap_r, BRW_SAMPLER_TCZ_WRAP_MODE);
if (non_normalized_coordinates)
ss[3] |= GEN7_SAMPLER_NON_NORMALIZED_COORDINATES;
} else {
ss[0] |= SET_FIELD(lod_bias & 0x7ff, GEN4_SAMPLER_LOD_BIAS) |
SET_FIELD(shadow_function, GEN4_SAMPLER_SHADOW_FUNCTION);
if (brw->gen == 6 && min_filter != mag_filter)
ss[0] |= GEN6_SAMPLER_MIN_MAG_NOT_EQUAL;
ss[1] = SET_FIELD(min_lod, GEN4_SAMPLER_MIN_LOD) |
SET_FIELD(max_lod, GEN4_SAMPLER_MAX_LOD) |
SET_FIELD(wrap_s, BRW_SAMPLER_TCX_WRAP_MODE) |
SET_FIELD(wrap_t, BRW_SAMPLER_TCY_WRAP_MODE) |
SET_FIELD(wrap_r, BRW_SAMPLER_TCZ_WRAP_MODE);
if (brw->gen >= 6 && non_normalized_coordinates)
ss[3] |= GEN6_SAMPLER_NON_NORMALIZED_COORDINATES;
}
}
uint32_t
translate_wrap_mode(struct brw_context *brw, GLenum wrap, bool using_nearest)
{

18
src/mesa/drivers/dri/i965/brw_state.h
View file

@ -243,6 +243,24 @@ void gen7_upload_3dstate_so_decl_list(struct brw_context *brw,
void gen8_init_vtable_surface_functions(struct brw_context *brw);
/* brw_sampler_state.c */
void brw_emit_sampler_state(struct brw_context *brw,
uint32_t *sampler_state,
uint32_t batch_offset_for_sampler_state,
unsigned min_filter,
unsigned mag_filter,
unsigned mip_filter,
unsigned max_anisotropy,
unsigned address_rounding,
unsigned wrap_s,
unsigned wrap_t,
unsigned wrap_r,
unsigned min_lod,
unsigned max_lod,
int lod_bias,
unsigned base_level,
unsigned shadow_function,
bool non_normalized_coordinates,
uint32_t border_color_offset);
uint32_t translate_wrap_mode(struct brw_context *brw,
GLenum wrap, bool using_nearest);
void upload_default_color(struct brw_context *brw,