static void
brw_update_sampler_state(struct brw_context *brw,
int unit,
- struct brw_sampler_state *sampler,
+ uint32_t *sampler_state,
uint32_t batch_offset_for_sampler_state)
{
struct gl_context *ctx = &brw->ctx;
- struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
- struct gl_texture_object *texObj = texUnit->_Current;
- struct gl_sampler_object *gl_sampler = _mesa_get_samplerobj(ctx, unit);
- bool using_nearest = false;
+ const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
+ const struct gl_texture_object *texObj = texUnit->_Current;
+ const struct gl_sampler_object *sampler = _mesa_get_samplerobj(ctx, unit);
/* These don't use samplers at all. */
if (texObj->Target == GL_TEXTURE_BUFFER)
return;
- switch (gl_sampler->MinFilter) {
+ unsigned min_filter, mag_filter, mip_filter;
+
+ /* Select min and mip filters. */
+ switch (sampler->MinFilter) {
case GL_NEAREST:
- sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
- sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
- using_nearest = true;
+ min_filter = BRW_MAPFILTER_NEAREST;
+ mip_filter = BRW_MIPFILTER_NONE;
break;
case GL_LINEAR:
- sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
- sampler->ss0.mip_filter = BRW_MIPFILTER_NONE;
+ min_filter = BRW_MAPFILTER_LINEAR;
+ mip_filter = BRW_MIPFILTER_NONE;
break;
case GL_NEAREST_MIPMAP_NEAREST:
- sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
- sampler->ss0.mip_filter = BRW_MIPFILTER_NEAREST;
+ min_filter = BRW_MAPFILTER_NEAREST;
+ mip_filter = BRW_MIPFILTER_NEAREST;
break;
case GL_LINEAR_MIPMAP_NEAREST:
- sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
- sampler->ss0.mip_filter = BRW_MIPFILTER_NEAREST;
+ min_filter = BRW_MAPFILTER_LINEAR;
+ mip_filter = BRW_MIPFILTER_NEAREST;
break;
case GL_NEAREST_MIPMAP_LINEAR:
- sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST;
- sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR;
+ min_filter = BRW_MAPFILTER_NEAREST;
+ mip_filter = BRW_MIPFILTER_LINEAR;
break;
case GL_LINEAR_MIPMAP_LINEAR:
- sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR;
- sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR;
+ min_filter = BRW_MAPFILTER_LINEAR;
+ mip_filter = BRW_MIPFILTER_LINEAR;
break;
default:
break;
}
- /* Set Anisotropy:
- */
- if (gl_sampler->MaxAnisotropy > 1.0) {
- sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC;
- sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC;
-
- if (gl_sampler->MaxAnisotropy > 2.0) {
- sampler->ss3.max_aniso = MIN2((gl_sampler->MaxAnisotropy - 2) / 2,
- BRW_ANISORATIO_16);
- }
- }
- else {
- switch (gl_sampler->MagFilter) {
- case GL_NEAREST:
- sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST;
- using_nearest = true;
- break;
- case GL_LINEAR:
- sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR;
- break;
- default:
- break;
+ /* Select mag filter. */
+ if (sampler->MagFilter == GL_LINEAR)
+ mag_filter = BRW_MAPFILTER_LINEAR;
+ else
+ mag_filter = BRW_MAPFILTER_NEAREST;
+
+ /* Enable anisotropic filtering if desired. */
+ unsigned max_anisotropy = BRW_ANISORATIO_2;
+ if (sampler->MaxAnisotropy > 1.0) {
+ min_filter = BRW_MAPFILTER_ANISOTROPIC;
+ mag_filter = BRW_MAPFILTER_ANISOTROPIC;
+
+ if (sampler->MaxAnisotropy > 2.0) {
+ max_anisotropy =
+ MIN2((sampler->MaxAnisotropy - 2) / 2, BRW_ANISORATIO_16);
}
}
- sampler->ss1.r_wrap_mode = translate_wrap_mode(brw, gl_sampler->WrapR,
- using_nearest);
- sampler->ss1.s_wrap_mode = translate_wrap_mode(brw, gl_sampler->WrapS,
- using_nearest);
- sampler->ss1.t_wrap_mode = translate_wrap_mode(brw, gl_sampler->WrapT,
- using_nearest);
+ /* Set address rounding bits if not using nearest filtering. */
+ unsigned address_rounding = 0;
+ if (min_filter != BRW_MAPFILTER_NEAREST) {
+ address_rounding |= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN |
+ BRW_ADDRESS_ROUNDING_ENABLE_V_MIN |
+ BRW_ADDRESS_ROUNDING_ENABLE_R_MIN;
+ }
+ if (mag_filter != BRW_MAPFILTER_NEAREST) {
+ address_rounding |= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG |
+ BRW_ADDRESS_ROUNDING_ENABLE_V_MAG |
+ BRW_ADDRESS_ROUNDING_ENABLE_R_MAG;
+ }
- if (brw->gen >= 6 &&
- sampler->ss0.min_filter != sampler->ss0.mag_filter)
- sampler->ss0.min_mag_neq = 1;
+ bool either_nearest =
+ sampler->MinFilter == GL_NEAREST || sampler->MagFilter == GL_NEAREST;
+ unsigned wrap_s = translate_wrap_mode(brw, sampler->WrapS, either_nearest);
+ unsigned wrap_t = translate_wrap_mode(brw, sampler->WrapT, either_nearest);
+ unsigned wrap_r = translate_wrap_mode(brw, sampler->WrapR, either_nearest);
- /* Cube-maps on 965 and later must use the same wrap mode for all 3
- * coordinate dimensions. Futher, only CUBE and CLAMP are valid.
- */
if (texObj->Target == GL_TEXTURE_CUBE_MAP ||
texObj->Target == GL_TEXTURE_CUBE_MAP_ARRAY) {
- if ((ctx->Texture.CubeMapSeamless || gl_sampler->CubeMapSeamless) &&
- (gl_sampler->MinFilter != GL_NEAREST ||
- gl_sampler->MagFilter != GL_NEAREST)) {
- sampler->ss1.r_wrap_mode = BRW_TEXCOORDMODE_CUBE;
- sampler->ss1.s_wrap_mode = BRW_TEXCOORDMODE_CUBE;
- sampler->ss1.t_wrap_mode = BRW_TEXCOORDMODE_CUBE;
+ /* Cube maps must use the same wrap mode for all three coordinate
+ * dimensions. Prior to Haswell, only CUBE and CLAMP are valid.
+ */
+ if ((ctx->Texture.CubeMapSeamless || sampler->CubeMapSeamless) &&
+ (sampler->MinFilter != GL_NEAREST ||
+ sampler->MagFilter != GL_NEAREST)) {
+ wrap_s = BRW_TEXCOORDMODE_CUBE;
+ wrap_t = BRW_TEXCOORDMODE_CUBE;
+ wrap_r = BRW_TEXCOORDMODE_CUBE;
} else {
- sampler->ss1.r_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
- sampler->ss1.s_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
- sampler->ss1.t_wrap_mode = BRW_TEXCOORDMODE_CLAMP;
+ wrap_s = BRW_TEXCOORDMODE_CLAMP;
+ wrap_t = BRW_TEXCOORDMODE_CLAMP;
+ wrap_r = BRW_TEXCOORDMODE_CLAMP;
}
} else if (texObj->Target == GL_TEXTURE_1D) {
/* There's a bug in 1D texture sampling - it actually pays
* Override the wrap_t value here to GL_REPEAT to keep
* any nonexistent border pixels from floating in.
*/
- sampler->ss1.t_wrap_mode = BRW_TEXCOORDMODE_WRAP;
- }
-
-
- /* Set shadow function:
- */
- if (gl_sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
- /* Shadowing is "enabled" by emitting a particular sampler
- * message (sample_c). So need to recompile WM program when
- * shadow comparison is enabled on each/any texture unit.
- */
- sampler->ss0.shadow_function =
- intel_translate_shadow_compare_func(gl_sampler->CompareFunc);
- }
-
- /* Set LOD bias:
- */
- sampler->ss0.lod_bias = S_FIXED(CLAMP(texUnit->LodBias +
- gl_sampler->LodBias, -16, 15), 6);
-
- sampler->ss0.lod_preclamp = 1; /* OpenGL mode */
- sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */
-
- sampler->ss0.base_level = U_FIXED(0, 1);
-
- sampler->ss1.max_lod = U_FIXED(CLAMP(gl_sampler->MaxLod, 0, 13), 6);
- sampler->ss1.min_lod = U_FIXED(CLAMP(gl_sampler->MinLod, 0, 13), 6);
-
- /* On Gen6+, the sampler can handle non-normalized texture
- * rectangle coordinates natively
- */
- if (brw->gen >= 6 && texObj->Target == GL_TEXTURE_RECTANGLE) {
- sampler->ss3.non_normalized_coord = 1;
+ wrap_t = BRW_TEXCOORDMODE_WRAP;
}
- uint32_t sdc_offset;
- upload_default_color(brw, gl_sampler, unit, &sdc_offset);
-
- if (brw->gen >= 6) {
- sampler->ss2.default_color_pointer = sdc_offset >> 5;
- } else {
- /* reloc */
- sampler->ss2.default_color_pointer =
- (brw->batch.bo->offset64 + sdc_offset) >> 5;
-
- drm_intel_bo_emit_reloc(brw->batch.bo,
- batch_offset_for_sampler_state +
- offsetof(struct brw_sampler_state, ss2),
- brw->batch.bo, sdc_offset,
- I915_GEM_DOMAIN_SAMPLER, 0);
+ /* Set shadow function. */
+ unsigned shadow_function = 0;
+ if (sampler->CompareMode == GL_COMPARE_R_TO_TEXTURE_ARB) {
+ shadow_function =
+ intel_translate_shadow_compare_func(sampler->CompareFunc);
}
- if (sampler->ss0.min_filter != BRW_MAPFILTER_NEAREST)
- sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MIN |
- BRW_ADDRESS_ROUNDING_ENABLE_V_MIN |
- BRW_ADDRESS_ROUNDING_ENABLE_R_MIN;
- if (sampler->ss0.mag_filter != BRW_MAPFILTER_NEAREST)
- sampler->ss3.address_round |= BRW_ADDRESS_ROUNDING_ENABLE_U_MAG |
- BRW_ADDRESS_ROUNDING_ENABLE_V_MAG |
- BRW_ADDRESS_ROUNDING_ENABLE_R_MAG;
+ const unsigned min_lod = U_FIXED(CLAMP(sampler->MinLod, 0, 13), 6);
+ const unsigned max_lod = U_FIXED(CLAMP(sampler->MaxLod, 0, 13), 6);
+ const int lod_bias =
+ S_FIXED(CLAMP(texUnit->LodBias + sampler->LodBias, -16, 15), 6);
+ const unsigned base_level = U_FIXED(0, 1);
+
+ uint32_t border_color_offset;
+ upload_default_color(brw, sampler, unit, &border_color_offset);
+
+ const bool non_normalized_coords = texObj->Target == GL_TEXTURE_RECTANGLE;
+
+ brw_emit_sampler_state(brw,
+ sampler_state,
+ batch_offset_for_sampler_state,
+ min_filter, mag_filter, mip_filter,
+ max_anisotropy,
+ address_rounding,
+ wrap_s, wrap_t, wrap_r,
+ min_lod, max_lod, lod_bias, base_level,
+ shadow_function,
+ non_normalized_coords,
+ border_color_offset);
}
sampler_state);
} else {
brw_update_sampler_state(brw, unit,
- (struct brw_sampler_state *)
sampler_state,
batch_offset_for_sampler_state);
}
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