/************************************************************************** * * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. * All Rights Reserved. * * 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, sub license, 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 NON-INFRINGEMENT. * IN NO EVENT SHALL TUNGSTEN GRAPHICS 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. * **************************************************************************/ #include "pipe/p_context.h" #include "pipe/p_state.h" #include "i915_state_inlines.h" #include "i915_context.h" #include "i915_reg.h" #include "i915_state.h" #include "i915_resource.h" /* * A note about min_lod & max_lod. * * There is a circular dependancy between the sampler state * and the map state to be submitted to hw. * * Two condition must be meet: * min_lod =< max_lod == true * max_lod =< last_level == true * * * This is all fine and dandy if it were for the fact that max_lod * is set on the map state instead of the sampler state. That is * the max_lod we submit on map is: * max_lod = MIN2(last_level, max_lod); * * So we need to update the map state when we change samplers and * we need to change the sampler state when map state is changed. * The first part is done by calling update_texture in update_samplers * and the second part is done else where in code tracking the state * changes. */ static void update_map(struct i915_context *i915, uint unit, const struct i915_texture *tex, const struct i915_sampler_state *sampler, const struct pipe_sampler_view* view, uint state[2]); /*********************************************************************** * Samplers */ /** * Compute i915 texture sampling state. * * Recalculate all state from scratch. Perhaps not the most * efficient, but this has gotten complex enough that we need * something which is understandable and reliable. * \param state returns the 3 words of compute state */ static void update_sampler(struct i915_context *i915, uint unit, const struct i915_sampler_state *sampler, const struct i915_texture *tex, unsigned state[3]) { const struct pipe_resource *pt = &tex->b.b; unsigned minlod, lastlod; state[0] = sampler->state[0]; state[1] = sampler->state[1]; state[2] = sampler->state[2]; if (pt->format == PIPE_FORMAT_UYVY || pt->format == PIPE_FORMAT_YUYV) state[0] |= SS2_COLORSPACE_CONVERSION; if (pt->format == PIPE_FORMAT_B8G8R8A8_SRGB || pt->format == PIPE_FORMAT_L8_SRGB ) state[0] |= SS2_REVERSE_GAMMA_ENABLE; /* 3D textures don't seem to respect the border color. * Fallback if there's ever a danger that they might refer to * it. * * Effectively this means fallback on 3D clamp or * clamp_to_border. * * XXX: Check if this is true on i945. * XXX: Check if this bug got fixed in release silicon. */ #if 0 { const unsigned ws = sampler->templ->wrap_s; const unsigned wt = sampler->templ->wrap_t; const unsigned wr = sampler->templ->wrap_r; if (pt->target == PIPE_TEXTURE_3D && (sampler->templ->min_img_filter != PIPE_TEX_FILTER_NEAREST || sampler->templ->mag_img_filter != PIPE_TEX_FILTER_NEAREST) && (ws == PIPE_TEX_WRAP_CLAMP || wt == PIPE_TEX_WRAP_CLAMP || wr == PIPE_TEX_WRAP_CLAMP || ws == PIPE_TEX_WRAP_CLAMP_TO_BORDER || wt == PIPE_TEX_WRAP_CLAMP_TO_BORDER || wr == PIPE_TEX_WRAP_CLAMP_TO_BORDER)) { if (i915->conformance_mode > 0) { assert(0); /* sampler->fallback = true; */ /* TODO */ } } } #endif /* See note at the top of file */ minlod = sampler->minlod; lastlod = pt->last_level << 4; if (lastlod < minlod) { minlod = lastlod; } state[1] |= (sampler->minlod << SS3_MIN_LOD_SHIFT); state[1] |= (unit << SS3_TEXTUREMAP_INDEX_SHIFT); } static void update_samplers(struct i915_context *i915) { uint unit; i915->current.sampler_enable_nr = 0; i915->current.sampler_enable_flags = 0x0; for (unit = 0; unit < i915->num_fragment_sampler_views && unit < i915->num_samplers; unit++) { /* determine unit enable/disable by looking for a bound texture */ /* could also examine the fragment program? */ if (i915->fragment_sampler_views[unit]) { struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture); update_sampler(i915, unit, i915->sampler[unit], /* sampler state */ texture, /* texture */ i915->current.sampler[unit]); /* the result */ update_map(i915, unit, texture, /* texture */ i915->sampler[unit], /* sampler state */ i915->fragment_sampler_views[unit], /* sampler view */ i915->current.texbuffer[unit]); /* the result */ i915->current.sampler_enable_nr++; i915->current.sampler_enable_flags |= (1 << unit); } } i915->hardware_dirty |= I915_HW_SAMPLER | I915_HW_MAP; } struct i915_tracked_state i915_hw_samplers = { "samplers", update_samplers, I915_NEW_SAMPLER | I915_NEW_SAMPLER_VIEW }; /*********************************************************************** * Sampler views */ static uint translate_texture_format(enum pipe_format pipeFormat, const struct pipe_sampler_view* view) { if ( (view->swizzle_r != PIPE_SWIZZLE_RED || view->swizzle_g != PIPE_SWIZZLE_GREEN || view->swizzle_b != PIPE_SWIZZLE_BLUE || view->swizzle_a != PIPE_SWIZZLE_ALPHA ) && pipeFormat != PIPE_FORMAT_Z24_UNORM_S8_UINT && pipeFormat != PIPE_FORMAT_Z24X8_UNORM ) debug_printf("i915: unsupported texture swizzle for format %d\n", pipeFormat); switch (pipeFormat) { case PIPE_FORMAT_L8_UNORM: return MAPSURF_8BIT | MT_8BIT_L8; case PIPE_FORMAT_I8_UNORM: return MAPSURF_8BIT | MT_8BIT_I8; case PIPE_FORMAT_A8_UNORM: return MAPSURF_8BIT | MT_8BIT_A8; case PIPE_FORMAT_L8A8_UNORM: return MAPSURF_16BIT | MT_16BIT_AY88; case PIPE_FORMAT_B5G6R5_UNORM: return MAPSURF_16BIT | MT_16BIT_RGB565; case PIPE_FORMAT_B5G5R5A1_UNORM: return MAPSURF_16BIT | MT_16BIT_ARGB1555; case PIPE_FORMAT_B4G4R4A4_UNORM: return MAPSURF_16BIT | MT_16BIT_ARGB4444; case PIPE_FORMAT_B10G10R10A2_UNORM: return MAPSURF_32BIT | MT_32BIT_ARGB2101010; case PIPE_FORMAT_B8G8R8A8_UNORM: case PIPE_FORMAT_B8G8R8A8_SRGB: return MAPSURF_32BIT | MT_32BIT_ARGB8888; case PIPE_FORMAT_B8G8R8X8_UNORM: return MAPSURF_32BIT | MT_32BIT_XRGB8888; case PIPE_FORMAT_R8G8B8A8_UNORM: return MAPSURF_32BIT | MT_32BIT_ABGR8888; case PIPE_FORMAT_R8G8B8X8_UNORM: return MAPSURF_32BIT | MT_32BIT_XBGR8888; case PIPE_FORMAT_YUYV: return (MAPSURF_422 | MT_422_YCRCB_NORMAL); case PIPE_FORMAT_UYVY: return (MAPSURF_422 | MT_422_YCRCB_SWAPY); #if 0 case PIPE_FORMAT_RGB_FXT1: case PIPE_FORMAT_RGBA_FXT1: return (MAPSURF_COMPRESSED | MT_COMPRESS_FXT1); #endif case PIPE_FORMAT_Z16_UNORM: return (MAPSURF_16BIT | MT_16BIT_L16); case PIPE_FORMAT_DXT1_RGBA: case PIPE_FORMAT_DXT1_RGB: return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT1); case PIPE_FORMAT_DXT3_RGBA: return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT2_3); case PIPE_FORMAT_DXT5_RGBA: return (MAPSURF_COMPRESSED | MT_COMPRESS_DXT4_5); case PIPE_FORMAT_Z24_UNORM_S8_UINT: case PIPE_FORMAT_Z24X8_UNORM: { if ( view->swizzle_r == PIPE_SWIZZLE_RED && view->swizzle_g == PIPE_SWIZZLE_RED && view->swizzle_b == PIPE_SWIZZLE_RED && view->swizzle_a == PIPE_SWIZZLE_ONE) return (MAPSURF_32BIT | MT_32BIT_xA824); if ( view->swizzle_r == PIPE_SWIZZLE_RED && view->swizzle_g == PIPE_SWIZZLE_RED && view->swizzle_b == PIPE_SWIZZLE_RED && view->swizzle_a == PIPE_SWIZZLE_RED) return (MAPSURF_32BIT | MT_32BIT_xI824); if ( view->swizzle_r == PIPE_SWIZZLE_ZERO && view->swizzle_g == PIPE_SWIZZLE_ZERO && view->swizzle_b == PIPE_SWIZZLE_ZERO && view->swizzle_a == PIPE_SWIZZLE_RED) return (MAPSURF_32BIT | MT_32BIT_xL824); debug_printf("i915: unsupported depth swizzle %d %d %d %d\n", view->swizzle_r, view->swizzle_g, view->swizzle_b, view->swizzle_a); return (MAPSURF_32BIT | MT_32BIT_xL824); } default: debug_printf("i915: translate_texture_format() bad image format %x\n", pipeFormat); assert(0); return 0; } } static inline uint32_t ms3_tiling_bits(enum i915_winsys_buffer_tile tiling) { uint32_t tiling_bits = 0; switch (tiling) { case I915_TILE_Y: tiling_bits |= MS3_TILE_WALK_Y; case I915_TILE_X: tiling_bits |= MS3_TILED_SURFACE; case I915_TILE_NONE: break; } return tiling_bits; } static void update_map(struct i915_context *i915, uint unit, const struct i915_texture *tex, const struct i915_sampler_state *sampler, const struct pipe_sampler_view* view, uint state[2]) { const struct pipe_resource *pt = &tex->b.b; uint format, pitch; const uint width = pt->width0, height = pt->height0, depth = pt->depth0; const uint num_levels = pt->last_level; unsigned max_lod = num_levels * 4; assert(tex); assert(width); assert(height); assert(depth); format = translate_texture_format(pt->format, view); pitch = tex->stride; assert(format); assert(pitch); /* MS3 state */ state[0] = (((height - 1) << MS3_HEIGHT_SHIFT) | ((width - 1) << MS3_WIDTH_SHIFT) | format | ms3_tiling_bits(tex->tiling)); /* * XXX When min_filter != mag_filter and there's just one mipmap level, * set max_lod = 1 to make sure i915 chooses between min/mag filtering. */ /* See note at the top of file */ if (max_lod > (sampler->maxlod >> 2)) max_lod = sampler->maxlod >> 2; /* MS4 state */ state[1] = ((((pitch / 4) - 1) << MS4_PITCH_SHIFT) | MS4_CUBE_FACE_ENA_MASK | ((max_lod) << MS4_MAX_LOD_SHIFT) | ((depth - 1) << MS4_VOLUME_DEPTH_SHIFT)); } static void update_maps(struct i915_context *i915) { uint unit; for (unit = 0; unit < i915->num_fragment_sampler_views && unit < i915->num_samplers; unit++) { /* determine unit enable/disable by looking for a bound texture */ /* could also examine the fragment program? */ if (i915->fragment_sampler_views[unit]) { struct i915_texture *texture = i915_texture(i915->fragment_sampler_views[unit]->texture); update_map(i915, unit, texture, /* texture */ i915->sampler[unit], /* sampler state */ i915->fragment_sampler_views[unit], /* sampler view */ i915->current.texbuffer[unit]); } } i915->hardware_dirty |= I915_HW_MAP; } struct i915_tracked_state i915_hw_sampler_views = { "sampler_views", update_maps, I915_NEW_SAMPLER_VIEW };