diff options
author | Keith Whitwell <keithw@vmware.com> | 2009-10-23 16:55:02 +0100 |
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committer | Keith Whitwell <keithw@vmware.com> | 2009-10-23 17:03:45 +0100 |
commit | 2f5f7c07732577f60666e3cee69c75c9b035c145 (patch) | |
tree | ff6639c9168bef0c2d389efdc6ce8eb3d6071ab2 /src/gallium/drivers/i965/brw_wm_sampler_state.c | |
parent | da253319f9e5d37d9c55b975ef9328545a3ac9b4 (diff) |
i965g: re-starting from the dri driver
Diffstat (limited to 'src/gallium/drivers/i965/brw_wm_sampler_state.c')
-rw-r--r-- | src/gallium/drivers/i965/brw_wm_sampler_state.c | 369 |
1 files changed, 369 insertions, 0 deletions
diff --git a/src/gallium/drivers/i965/brw_wm_sampler_state.c b/src/gallium/drivers/i965/brw_wm_sampler_state.c new file mode 100644 index 0000000000..dff466587a --- /dev/null +++ b/src/gallium/drivers/i965/brw_wm_sampler_state.c @@ -0,0 +1,369 @@ +/* + Copyright (C) Intel Corp. 2006. All Rights Reserved. + Intel funded Tungsten Graphics (http://www.tungstengraphics.com) to + develop this 3D driver. + + Permission is hereby granted, free of charge, to any person obtaining + a copy of this software and associated documentation files (the + "Software"), to deal in the Software without restriction, including + without limitation the rights to use, copy, modify, merge, publish, + distribute, sublicense, and/or sell copies of the Software, and to + permit persons to whom the Software is furnished to do so, subject to + the following conditions: + + The above copyright notice and this permission notice (including the + next paragraph) shall be included in all copies or substantial + portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. + IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE + LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + + **********************************************************************/ + /* + * Authors: + * Keith Whitwell <keith@tungstengraphics.com> + */ + + +#include "brw_context.h" +#include "brw_state.h" +#include "brw_defines.h" + +#include "main/macros.h" + + + +/* Samplers aren't strictly wm state from the hardware's perspective, + * but that is the only situation in which we use them in this driver. + */ + + + +/* The brw (and related graphics cores) do not support GL_CLAMP. The + * Intel drivers for "other operating systems" implement GL_CLAMP as + * GL_CLAMP_TO_EDGE, so the same is done here. + */ +static GLuint translate_wrap_mode( GLenum wrap ) +{ + switch( wrap ) { + case GL_REPEAT: + return BRW_TEXCOORDMODE_WRAP; + case GL_CLAMP: + return BRW_TEXCOORDMODE_CLAMP; + case GL_CLAMP_TO_EDGE: + return BRW_TEXCOORDMODE_CLAMP; /* conform likes it this way */ + case GL_CLAMP_TO_BORDER: + return BRW_TEXCOORDMODE_CLAMP_BORDER; + case GL_MIRRORED_REPEAT: + return BRW_TEXCOORDMODE_MIRROR; + default: + return BRW_TEXCOORDMODE_WRAP; + } +} + + +static GLuint U_FIXED(GLfloat value, GLuint frac_bits) +{ + value *= (1<<frac_bits); + return value < 0 ? 0 : value; +} + +static GLint S_FIXED(GLfloat value, GLuint frac_bits) +{ + return value * (1<<frac_bits); +} + + +static dri_bo *upload_default_color( struct brw_context *brw, + const GLfloat *color ) +{ + struct brw_sampler_default_color sdc; + + COPY_4V(sdc.color, color); + + return brw_cache_data( &brw->cache, BRW_SAMPLER_DEFAULT_COLOR, &sdc, + NULL, 0 ); +} + + +struct wm_sampler_key { + int sampler_count; + + struct wm_sampler_entry { + GLenum tex_target; + GLenum wrap_r, wrap_s, wrap_t; + float maxlod, minlod; + float lod_bias; + float max_aniso; + GLenum minfilter, magfilter; + GLenum comparemode, comparefunc; + dri_bo *sdc_bo; + + /** If target is cubemap, take context setting. + */ + GLboolean seamless_cube_map; + } sampler[BRW_MAX_TEX_UNIT]; +}; + +/** + * Sets the sampler state for a single unit based off of the sampler key + * entry. + */ +static void brw_update_sampler_state(struct wm_sampler_entry *key, + dri_bo *sdc_bo, + struct brw_sampler_state *sampler) +{ + _mesa_memset(sampler, 0, sizeof(*sampler)); + + switch (key->minfilter) { + case GL_NEAREST: + sampler->ss0.min_filter = BRW_MAPFILTER_NEAREST; + sampler->ss0.mip_filter = BRW_MIPFILTER_NONE; + break; + case GL_LINEAR: + sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR; + sampler->ss0.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; + break; + case GL_LINEAR_MIPMAP_NEAREST: + sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR; + sampler->ss0.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; + break; + case GL_LINEAR_MIPMAP_LINEAR: + sampler->ss0.min_filter = BRW_MAPFILTER_LINEAR; + sampler->ss0.mip_filter = BRW_MIPFILTER_LINEAR; + break; + default: + break; + } + + /* Set Anisotropy: + */ + if (key->max_aniso > 1.0) { + sampler->ss0.min_filter = BRW_MAPFILTER_ANISOTROPIC; + sampler->ss0.mag_filter = BRW_MAPFILTER_ANISOTROPIC; + + if (key->max_aniso > 2.0) { + sampler->ss3.max_aniso = MIN2((key->max_aniso - 2) / 2, + BRW_ANISORATIO_16); + } + } + else { + switch (key->magfilter) { + case GL_NEAREST: + sampler->ss0.mag_filter = BRW_MAPFILTER_NEAREST; + break; + case GL_LINEAR: + sampler->ss0.mag_filter = BRW_MAPFILTER_LINEAR; + break; + default: + break; + } + } + + sampler->ss1.r_wrap_mode = translate_wrap_mode(key->wrap_r); + sampler->ss1.s_wrap_mode = translate_wrap_mode(key->wrap_s); + sampler->ss1.t_wrap_mode = translate_wrap_mode(key->wrap_t); + + /* 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 (key->tex_target == GL_TEXTURE_CUBE_MAP) { + if (key->seamless_cube_map && + (key->minfilter != GL_NEAREST || key->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; + } 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; + } + } else if (key->tex_target == GL_TEXTURE_1D) { + /* There's a bug in 1D texture sampling - it actually pays + * attention to the wrap_t value, though it should not. + * 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 (key->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(key->comparefunc); + } + + /* Set LOD bias: + */ + sampler->ss0.lod_bias = S_FIXED(CLAMP(key->lod_bias, -16, 15), 6); + + sampler->ss0.lod_preclamp = 1; /* OpenGL mode */ + sampler->ss0.default_color_mode = 0; /* OpenGL/DX10 mode */ + + /* Set BaseMipLevel, MaxLOD, MinLOD: + * + * XXX: I don't think that using firstLevel, lastLevel works, + * because we always setup the surface state as if firstLevel == + * level zero. Probably have to subtract firstLevel from each of + * these: + */ + sampler->ss0.base_level = U_FIXED(0, 1); + + sampler->ss1.max_lod = U_FIXED(MIN2(MAX2(key->maxlod, 0), 13), 6); + sampler->ss1.min_lod = U_FIXED(MIN2(MAX2(key->minlod, 0), 13), 6); + + sampler->ss2.default_color_pointer = sdc_bo->offset >> 5; /* reloc */ +} + + +/** Sets up the cache key for sampler state for all texture units */ +static void +brw_wm_sampler_populate_key(struct brw_context *brw, + struct wm_sampler_key *key) +{ + GLcontext *ctx = &brw->intel.ctx; + int unit; + + memset(key, 0, sizeof(*key)); + + for (unit = 0; unit < BRW_MAX_TEX_UNIT; unit++) { + if (ctx->Texture.Unit[unit]._ReallyEnabled) { + struct wm_sampler_entry *entry = &key->sampler[unit]; + struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit]; + struct gl_texture_object *texObj = texUnit->_Current; + struct intel_texture_object *intelObj = intel_texture_object(texObj); + struct gl_texture_image *firstImage = + texObj->Image[0][intelObj->firstLevel]; + + entry->tex_target = texObj->Target; + + entry->seamless_cube_map = (texObj->Target == GL_TEXTURE_CUBE_MAP) + ? ctx->Texture.CubeMapSeamless : GL_FALSE; + + entry->wrap_r = texObj->WrapR; + entry->wrap_s = texObj->WrapS; + entry->wrap_t = texObj->WrapT; + + entry->maxlod = texObj->MaxLod; + entry->minlod = texObj->MinLod; + entry->lod_bias = texUnit->LodBias + texObj->LodBias; + entry->max_aniso = texObj->MaxAnisotropy; + entry->minfilter = texObj->MinFilter; + entry->magfilter = texObj->MagFilter; + entry->comparemode = texObj->CompareMode; + entry->comparefunc = texObj->CompareFunc; + + dri_bo_unreference(brw->wm.sdc_bo[unit]); + if (firstImage->_BaseFormat == GL_DEPTH_COMPONENT) { + float bordercolor[4] = { + texObj->BorderColor[0], + texObj->BorderColor[0], + texObj->BorderColor[0], + texObj->BorderColor[0] + }; + /* GL specs that border color for depth textures is taken from the + * R channel, while the hardware uses A. Spam R into all the + * channels for safety. + */ + brw->wm.sdc_bo[unit] = upload_default_color(brw, bordercolor); + } else { + brw->wm.sdc_bo[unit] = upload_default_color(brw, + texObj->BorderColor); + } + key->sampler_count = unit + 1; + } + } +} + +/* All samplers must be uploaded in a single contiguous array, which + * complicates various things. However, this is still too confusing - + * FIXME: simplify all the different new texture state flags. + */ +static void upload_wm_samplers( struct brw_context *brw ) +{ + GLcontext *ctx = &brw->intel.ctx; + struct wm_sampler_key key; + int i; + + brw_wm_sampler_populate_key(brw, &key); + + if (brw->wm.sampler_count != key.sampler_count) { + brw->wm.sampler_count = key.sampler_count; + brw->state.dirty.cache |= CACHE_NEW_SAMPLER; + } + + dri_bo_unreference(brw->wm.sampler_bo); + brw->wm.sampler_bo = NULL; + if (brw->wm.sampler_count == 0) + return; + + brw->wm.sampler_bo = brw_search_cache(&brw->cache, BRW_SAMPLER, + &key, sizeof(key), + brw->wm.sdc_bo, key.sampler_count, + NULL); + + /* If we didnt find it in the cache, compute the state and put it in the + * cache. + */ + if (brw->wm.sampler_bo == NULL) { + struct brw_sampler_state sampler[BRW_MAX_TEX_UNIT]; + + memset(sampler, 0, sizeof(sampler)); + for (i = 0; i < key.sampler_count; i++) { + if (brw->wm.sdc_bo[i] == NULL) + continue; + + brw_update_sampler_state(&key.sampler[i], brw->wm.sdc_bo[i], + &sampler[i]); + } + + brw->wm.sampler_bo = brw_upload_cache(&brw->cache, BRW_SAMPLER, + &key, sizeof(key), + brw->wm.sdc_bo, key.sampler_count, + &sampler, sizeof(sampler), + NULL, NULL); + + /* Emit SDC relocations */ + for (i = 0; i < BRW_MAX_TEX_UNIT; i++) { + if (!ctx->Texture.Unit[i]._ReallyEnabled) + continue; + + dri_bo_emit_reloc(brw->wm.sampler_bo, + I915_GEM_DOMAIN_SAMPLER, 0, + 0, + i * sizeof(struct brw_sampler_state) + + offsetof(struct brw_sampler_state, ss2), + brw->wm.sdc_bo[i]); + } + } +} + +const struct brw_tracked_state brw_wm_samplers = { + .dirty = { + .mesa = _NEW_TEXTURE, + .brw = 0, + .cache = 0 + }, + .prepare = upload_wm_samplers, +}; + + |