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      1 /*
      2  * Copyright 2008 Corbin Simpson <MostAwesomeDude (at) gmail.com>
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * on the rights to use, copy, modify, merge, publish, distribute, sub
      8  * license, and/or sell copies of the Software, and to permit persons to whom
      9  * the Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
     18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
     19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
     20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
     21  * USE OR OTHER DEALINGS IN THE SOFTWARE. */
     22 
     23 #ifndef R300_CONTEXT_H
     24 #define R300_CONTEXT_H
     25 
     26 #include "draw/draw_vertex.h"
     27 
     28 #include "util/u_blitter.h"
     29 
     30 #include "pipe/p_context.h"
     31 #include "util/u_inlines.h"
     32 #include "util/u_transfer.h"
     33 
     34 #include "r300_defines.h"
     35 #include "r300_screen.h"
     36 #include "../../winsys/radeon/drm/radeon_winsys.h"
     37 
     38 struct u_upload_mgr;
     39 struct r300_context;
     40 struct r300_fragment_shader;
     41 struct r300_vertex_shader;
     42 struct r300_stencilref_context;
     43 
     44 enum colormask_swizzle {
     45     COLORMASK_BGRA,
     46     COLORMASK_RGBA,
     47     COLORMASK_RRRR,
     48     COLORMASK_AAAA,
     49     COLORMASK_GRRG,
     50     COLORMASK_ARRA,
     51     COLORMASK_NUM_SWIZZLES
     52 };
     53 
     54 struct r300_atom {
     55     /* Name, for debugging. */
     56     const char* name;
     57     /* Opaque state. */
     58     void* state;
     59     /* Emit the state to the context. */
     60     void (*emit)(struct r300_context*, unsigned, void*);
     61     /* Upper bound on number of dwords to emit. */
     62     unsigned size;
     63     /* Whether this atom should be emitted. */
     64     boolean dirty;
     65     /* Whether this atom may be emitted with state == NULL. */
     66     boolean allow_null_state;
     67 };
     68 
     69 struct r300_aa_state {
     70     struct r300_surface *dest;
     71 
     72     uint32_t aa_config;
     73     uint32_t aaresolve_ctl;
     74 };
     75 
     76 struct r300_blend_state {
     77     struct pipe_blend_state state;
     78 
     79     uint32_t cb_clamp[COLORMASK_NUM_SWIZZLES][8];
     80     uint32_t cb_noclamp[8];
     81     uint32_t cb_no_readwrite[8];
     82 };
     83 
     84 struct r300_blend_color_state {
     85     struct pipe_blend_color state;
     86     uint32_t cb[3];
     87 };
     88 
     89 struct r300_clip_state {
     90     uint32_t cb[29];
     91 };
     92 
     93 struct r300_dsa_state {
     94     struct pipe_depth_stencil_alpha_state dsa;
     95 
     96     /* This is actually a command buffer with named dwords. */
     97     uint32_t cb_begin;
     98     uint32_t alpha_function;    /* R300_FG_ALPHA_FUNC: 0x4bd4 */
     99     uint32_t cb_reg_seq;
    100     uint32_t z_buffer_control;  /* R300_ZB_CNTL: 0x4f00 */
    101     uint32_t z_stencil_control; /* R300_ZB_ZSTENCILCNTL: 0x4f04 */
    102     uint32_t stencil_ref_mask;  /* R300_ZB_STENCILREFMASK: 0x4f08 */
    103     uint32_t cb_reg;
    104     uint32_t stencil_ref_bf;    /* R500_ZB_STENCILREFMASK_BF: 0x4fd4 */
    105     uint32_t cb_reg1;
    106     uint32_t alpha_value;       /* R500_FG_ALPHA_VALUE: 0x4be0 */
    107 
    108     /* The same, but for FP16 alpha test. */
    109     uint32_t cb_begin_fp16;
    110     uint32_t alpha_function_fp16;    /* R300_FG_ALPHA_FUNC: 0x4bd4 */
    111     uint32_t cb_reg_seq_fp16;
    112     uint32_t z_buffer_control_fp16;  /* R300_ZB_CNTL: 0x4f00 */
    113     uint32_t z_stencil_control_fp16; /* R300_ZB_ZSTENCILCNTL: 0x4f04 */
    114     uint32_t stencil_ref_mask_fp16;  /* R300_ZB_STENCILREFMASK: 0x4f08 */
    115     uint32_t cb_reg_fp16;
    116     uint32_t stencil_ref_bf_fp16;    /* R500_ZB_STENCILREFMASK_BF: 0x4fd4 */
    117     uint32_t cb_reg1_fp16;
    118     uint32_t alpha_value_fp16;       /* R500_FG_ALPHA_VALUE: 0x4be0 */
    119 
    120     /* The second command buffer disables zbuffer reads and writes. */
    121     uint32_t cb_zb_no_readwrite[10];
    122     uint32_t cb_fp16_zb_no_readwrite[10];
    123 
    124     /* Whether a two-sided stencil is enabled. */
    125     boolean two_sided;
    126     /* Whether a fallback should be used for a two-sided stencil ref value. */
    127     boolean two_sided_stencil_ref;
    128 };
    129 
    130 struct r300_hyperz_state {
    131     int flush;
    132     /* This is actually a command buffer with named dwords. */
    133     uint32_t cb_flush_begin;
    134     uint32_t zb_zcache_ctlstat;     /* R300_ZB_CACHE_CNTL */
    135     uint32_t cb_begin;
    136     uint32_t zb_bw_cntl;            /* R300_ZB_BW_CNTL */
    137     uint32_t cb_reg1;
    138     uint32_t zb_depthclearvalue;    /* R300_ZB_DEPTHCLEARVALUE */
    139     uint32_t cb_reg2;
    140     uint32_t sc_hyperz;             /* R300_SC_HYPERZ */
    141     uint32_t cb_reg3;
    142     uint32_t gb_z_peq_config;       /* R300_GB_Z_PEQ_CONFIG: 0x4028 */
    143 };
    144 
    145 struct r300_gpu_flush {
    146     uint32_t cb_flush_clean[6];
    147 };
    148 
    149 #define RS_STATE_MAIN_SIZE 27
    150 
    151 struct r300_rs_state {
    152     /* Original rasterizer state. */
    153     struct pipe_rasterizer_state rs;
    154     /* Draw-specific rasterizer state. */
    155     struct pipe_rasterizer_state rs_draw;
    156 
    157     /* Command buffers. */
    158     uint32_t cb_main[RS_STATE_MAIN_SIZE];
    159     uint32_t cb_poly_offset_zb16[5];
    160     uint32_t cb_poly_offset_zb24[5];
    161 
    162     /* The index to cb_main where the cull_mode register value resides. */
    163     unsigned cull_mode_index;
    164 
    165     /* Whether polygon offset is enabled. */
    166     boolean polygon_offset_enable;
    167 
    168     /* This is emitted in the draw function. */
    169     uint32_t color_control;         /* R300_GA_COLOR_CONTROL: 0x4278 */
    170 };
    171 
    172 struct r300_rs_block {
    173     uint32_t vap_vtx_state_cntl;  /* R300_VAP_VTX_STATE_CNTL: 0x2180 */
    174     uint32_t vap_vsm_vtx_assm;    /* R300_VAP_VSM_VTX_ASSM: 0x2184 */
    175     uint32_t vap_out_vtx_fmt[2];  /* R300_VAP_OUTPUT_VTX_FMT_[0-1]: 0x2090 */
    176     uint32_t gb_enable;
    177 
    178     uint32_t ip[8]; /* R300_RS_IP_[0-7], R500_RS_IP_[0-7] */
    179     uint32_t count; /* R300_RS_COUNT */
    180     uint32_t inst_count; /* R300_RS_INST_COUNT */
    181     uint32_t inst[8]; /* R300_RS_INST_[0-7] */
    182 };
    183 
    184 struct r300_sampler_state {
    185     struct pipe_sampler_state state;
    186 
    187     uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
    188     uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
    189 
    190     /* Min/max LOD must be clamped to [0, last_level], thus
    191      * it's dependent on a currently bound texture */
    192     unsigned min_lod, max_lod;
    193 };
    194 
    195 struct r300_texture_format_state {
    196     uint32_t format0; /* R300_TX_FORMAT0: 0x4480 */
    197     uint32_t format1; /* R300_TX_FORMAT1: 0x44c0 */
    198     uint32_t format2; /* R300_TX_FORMAT2: 0x4500 */
    199     uint32_t tile_config; /* R300_TX_OFFSET (subset thereof) */
    200     uint32_t us_format0;   /* R500_US_FORMAT0_0: 0x4640 (through 15) */
    201 };
    202 
    203 struct r300_sampler_view {
    204     struct pipe_sampler_view base;
    205 
    206     /* For resource_copy_region. */
    207     unsigned width0_override;
    208     unsigned height0_override;
    209 
    210     /* Swizzles in the UTIL_FORMAT_SWIZZLE_* representation,
    211      * derived from base. */
    212     unsigned char swizzle[4];
    213 
    214     /* Copy of r300_texture::texture_format_state with format-specific bits
    215      * added. */
    216     struct r300_texture_format_state format;
    217 
    218     /* The texture cache region for this texture. */
    219     uint32_t texcache_region;
    220 };
    221 
    222 struct r300_texture_sampler_state {
    223     struct r300_texture_format_state format;
    224     uint32_t filter0;      /* R300_TX_FILTER0: 0x4400 */
    225     uint32_t filter1;      /* R300_TX_FILTER1: 0x4440 */
    226     uint32_t border_color; /* R300_TX_BORDER_COLOR: 0x45c0 */
    227 };
    228 
    229 struct r300_textures_state {
    230     /* Textures. */
    231     struct r300_sampler_view *sampler_views[16];
    232     int sampler_view_count;
    233     /* Sampler states. */
    234     struct r300_sampler_state *sampler_states[16];
    235     int sampler_state_count;
    236 
    237     /* This is the merge of the texture and sampler states. */
    238     unsigned count;
    239     uint32_t tx_enable;         /* R300_TX_ENABLE: 0x4101 */
    240     struct r300_texture_sampler_state regs[16];
    241 };
    242 
    243 struct r300_vertex_stream_state {
    244     /* R300_VAP_PROG_STREAK_CNTL_[0-7] */
    245     uint32_t vap_prog_stream_cntl[8];
    246     /* R300_VAP_PROG_STREAK_CNTL_EXT_[0-7] */
    247     uint32_t vap_prog_stream_cntl_ext[8];
    248 
    249     unsigned count;
    250 };
    251 
    252 struct r300_invariant_state {
    253     uint32_t cb[24];
    254 };
    255 
    256 struct r300_vap_invariant_state {
    257     uint32_t cb[11];
    258 };
    259 
    260 struct r300_viewport_state {
    261     float xscale;         /* R300_VAP_VPORT_XSCALE:  0x2098 */
    262     float xoffset;        /* R300_VAP_VPORT_XOFFSET: 0x209c */
    263     float yscale;         /* R300_VAP_VPORT_YSCALE:  0x20a0 */
    264     float yoffset;        /* R300_VAP_VPORT_YOFFSET: 0x20a4 */
    265     float zscale;         /* R300_VAP_VPORT_ZSCALE:  0x20a8 */
    266     float zoffset;        /* R300_VAP_VPORT_ZOFFSET: 0x20ac */
    267     uint32_t vte_control; /* R300_VAP_VTE_CNTL:      0x20b0 */
    268 };
    269 
    270 struct r300_ztop_state {
    271     uint32_t z_buffer_top;      /* R300_ZB_ZTOP: 0x4f14 */
    272 };
    273 
    274 /* The next several objects are not pure Radeon state; they inherit from
    275  * various Gallium classes. */
    276 
    277 struct r300_constant_buffer {
    278     /* Buffer of constants */
    279     uint32_t *ptr;
    280     /* Remapping table. */
    281     unsigned *remap_table;
    282     /* const buffer base */
    283     uint32_t buffer_base;
    284 };
    285 
    286 /* Query object.
    287  *
    288  * This is not a subclass of pipe_query because pipe_query is never
    289  * actually fully defined. So, rather than have it as a member, and do
    290  * subclass-style casting, we treat pipe_query as an opaque, and just
    291  * trust that our state tracker does not ever mess up query objects.
    292  */
    293 struct r300_query {
    294     /* The kind of query. Currently only OQ is supported. */
    295     unsigned type;
    296     /* The number of pipes where query results are stored. */
    297     unsigned num_pipes;
    298     /* How many results have been written, in dwords. It's incremented
    299      * after end_query and flush. */
    300     unsigned num_results;
    301     /* if begin has been emitted */
    302     boolean begin_emitted;
    303 
    304     /* The buffer where query results are stored. */
    305     struct pb_buffer *buf;
    306     struct radeon_winsys_cs_handle *cs_buf;
    307 };
    308 
    309 struct r300_surface {
    310     struct pipe_surface base;
    311 
    312     /* Winsys buffer backing the texture. */
    313     struct pb_buffer *buf;
    314     struct radeon_winsys_cs_handle *cs_buf;
    315 
    316     enum radeon_bo_domain domain;
    317 
    318     uint32_t offset;    /* COLOROFFSET or DEPTHOFFSET. */
    319     uint32_t pitch;     /* COLORPITCH or DEPTHPITCH. */
    320     uint32_t pitch_zmask; /* ZMASK_PITCH */
    321     uint32_t pitch_hiz;   /* HIZ_PITCH */
    322     uint32_t format;    /* US_OUT_FMT or ZB_FORMAT. */
    323 
    324     /* Parameters dedicated to the CBZB clear. */
    325     uint32_t cbzb_width;            /* Aligned width. */
    326     uint32_t cbzb_height;           /* Half of the height. */
    327     uint32_t cbzb_midpoint_offset;  /* DEPTHOFFSET. */
    328     uint32_t cbzb_pitch;            /* DEPTHPITCH. */
    329     uint32_t cbzb_format;           /* ZB_FORMAT. */
    330 
    331     /* Whether the CBZB clear is allowed on the surface. */
    332     boolean cbzb_allowed;
    333 
    334     unsigned colormask_swizzle;
    335 };
    336 
    337 struct r300_texture_desc {
    338     /* Width, height, and depth.
    339      * Most of the time, these are equal to pipe_texture::width0, height0,
    340      * and depth0. However, NPOT 3D textures must have dimensions aligned
    341      * to POT, and this is the only case when these variables differ from
    342      * pipe_texture. */
    343     unsigned width0, height0, depth0;
    344 
    345     /* Buffer tiling.
    346      * Macrotiling is specified per-level because small mipmaps cannot
    347      * be macrotiled. */
    348     enum radeon_bo_layout microtile;
    349     enum radeon_bo_layout macrotile[R300_MAX_TEXTURE_LEVELS];
    350 
    351     /* Offsets into the buffer. */
    352     unsigned offset_in_bytes[R300_MAX_TEXTURE_LEVELS];
    353 
    354     /* Strides for each mip-level. */
    355     unsigned stride_in_bytes[R300_MAX_TEXTURE_LEVELS];
    356 
    357     /* Size of one zslice or face or 2D image based on the texture target. */
    358     unsigned layer_size_in_bytes[R300_MAX_TEXTURE_LEVELS];
    359 
    360     /* Total size of this texture, in bytes,
    361      * derived from the texture properties. */
    362     unsigned size_in_bytes;
    363 
    364     /**
    365      * If non-zero, override the natural texture layout with
    366      * a custom stride (in bytes).
    367      *
    368      * \note Mipmapping fails for textures with a non-natural layout!
    369      *
    370      * \sa r300_texture_get_stride
    371      */
    372     unsigned stride_in_bytes_override;
    373 
    374     /* Whether this texture has non-power-of-two dimensions.
    375      * It can be either a regular texture or a rectangle one. */
    376     boolean is_npot;
    377 
    378     /* This flag says that hardware must use the stride for addressing
    379      * instead of the width. */
    380     boolean uses_stride_addressing;
    381 
    382     /* Whether CBZB fast color clear is allowed on the miplevel. */
    383     boolean cbzb_allowed[R300_MAX_TEXTURE_LEVELS];
    384 
    385     /* Zbuffer compression info for each miplevel. */
    386     boolean zcomp8x8[R300_MAX_TEXTURE_LEVELS];
    387     /* If zero, then disable Z compression/HiZ. */
    388     unsigned zmask_dwords[R300_MAX_TEXTURE_LEVELS];
    389     unsigned hiz_dwords[R300_MAX_TEXTURE_LEVELS];
    390     /* Zmask/HiZ strides for each miplevel. */
    391     unsigned zmask_stride_in_pixels[R300_MAX_TEXTURE_LEVELS];
    392     unsigned hiz_stride_in_pixels[R300_MAX_TEXTURE_LEVELS];
    393 };
    394 
    395 struct r300_resource
    396 {
    397     struct u_resource b;
    398 
    399     /* Winsys buffer backing this resource. */
    400     struct pb_buffer *buf;
    401     struct radeon_winsys_cs_handle *cs_buf;
    402     enum radeon_bo_domain domain;
    403 
    404     /* Constant buffers and SWTCL vertex and index buffers are in user
    405      * memory. */
    406     uint8_t *malloced_buffer;
    407 
    408     /* Texture description (addressing, layout, special features). */
    409     struct r300_texture_desc tex;
    410 
    411     /* This is the level tiling flags were last time set for.
    412      * It's used to prevent redundant tiling-flags changes from happening.*/
    413     unsigned surface_level;
    414 };
    415 
    416 struct r300_vertex_element_state {
    417     unsigned count;
    418     struct pipe_vertex_element velem[PIPE_MAX_ATTRIBS];
    419     unsigned format_size[PIPE_MAX_ATTRIBS];
    420 
    421     /* The size of the vertex, in dwords. */
    422     unsigned vertex_size_dwords;
    423 
    424     struct r300_vertex_stream_state vertex_stream;
    425 };
    426 
    427 enum r300_hiz_func {
    428     HIZ_FUNC_NONE,
    429 
    430     /* The function, when determined, is set in stone
    431      * until the next HiZ clear. */
    432 
    433     /* MAX is written to the HiZ buffer.
    434      * Used for LESS, LEQUAL. */
    435     HIZ_FUNC_MAX,
    436 
    437     /* MIN is written to the HiZ buffer.
    438      * Used for GREATER, GEQUAL. */
    439     HIZ_FUNC_MIN,
    440 };
    441 
    442 /* For deferred fragment shader state validation. */
    443 enum r300_fs_validity_status {
    444     FRAGMENT_SHADER_VALID,      /* No need to change/validate the FS. */
    445     FRAGMENT_SHADER_MAYBE_DIRTY,/* Validate the FS if external state was changed. */
    446     FRAGMENT_SHADER_DIRTY       /* Always validate the FS (if the FS was changed) */
    447 };
    448 
    449 struct r300_context {
    450     /* Parent class */
    451     struct pipe_context context;
    452 
    453     /* The interface to the windowing system, etc. */
    454     struct radeon_winsys *rws;
    455     /* The command stream. */
    456     struct radeon_winsys_cs *cs;
    457     /* Screen. */
    458     struct r300_screen *screen;
    459 
    460     /* Draw module. Used mostly for SW TCL. */
    461     struct draw_context* draw;
    462     /* Vertex buffer for SW TCL. */
    463     struct pipe_resource* vbo;
    464     /* Offset and size into the SW TCL VBO. */
    465     size_t draw_vbo_offset;
    466     size_t draw_vbo_size;
    467     /* Whether the VBO must not be flushed. */
    468     boolean draw_vbo_locked;
    469     boolean draw_first_emitted;
    470 
    471     /* Accelerated blit support. */
    472     struct blitter_context* blitter;
    473     /* Stencil two-sided reference value fallback. */
    474     struct r300_stencilref_context *stencilref_fallback;
    475 
    476     /* The KIL opcode needs the first texture unit to be enabled
    477      * on r3xx-r4xx. In order to calm down the CS checker, we bind this
    478      * dummy texture there. */
    479     struct r300_sampler_view *texkill_sampler;
    480 
    481     /* When no vertex buffer is set, this one is used instead to prevent
    482      * hardlocks. */
    483     struct pipe_vertex_buffer dummy_vb;
    484 
    485     /* The currently active query. */
    486     struct r300_query *query_current;
    487     /* The saved query for blitter operations. */
    488     struct r300_query *blitter_saved_query;
    489     /* Query list. */
    490     struct r300_query query_list;
    491 
    492     /* Various CSO state objects. */
    493 
    494     /* Each atom is emitted in the order it appears here, which can affect
    495      * performance and stability if not handled with care. */
    496     /* GPU flush. */
    497     struct r300_atom gpu_flush;
    498     /* Anti-aliasing (MSAA) state. */
    499     struct r300_atom aa_state;
    500     /* Framebuffer state. */
    501     struct r300_atom fb_state;
    502     /* HyperZ state (various SC/ZB bits). */
    503     struct r300_atom hyperz_state;
    504     /* ZTOP state. */
    505     struct r300_atom ztop_state;
    506     /* Depth, stencil, and alpha state. */
    507     struct r300_atom dsa_state;
    508     /* Blend state. */
    509     struct r300_atom blend_state;
    510     /* Blend color state. */
    511     struct r300_atom blend_color_state;
    512     /* Scissor state. */
    513     struct r300_atom scissor_state;
    514     /* Invariant state. This must be emitted to get the engine started. */
    515     struct r300_atom invariant_state;
    516     /* Viewport state. */
    517     struct r300_atom viewport_state;
    518     /* PVS flush. */
    519     struct r300_atom pvs_flush;
    520     /* VAP invariant state. */
    521     struct r300_atom vap_invariant_state;
    522     /* Vertex stream formatting state. */
    523     struct r300_atom vertex_stream_state;
    524     /* Vertex shader. */
    525     struct r300_atom vs_state;
    526     /* User clip planes. */
    527     struct r300_atom clip_state;
    528     /* RS block state + VAP (vertex shader) output mapping state. */
    529     struct r300_atom rs_block_state;
    530     /* Rasterizer state. */
    531     struct r300_atom rs_state;
    532     /* Framebuffer state (pipelined regs). */
    533     struct r300_atom fb_state_pipelined;
    534     /* Fragment shader. */
    535     struct r300_atom fs;
    536     /* Fragment shader RC_CONSTANT_STATE variables. */
    537     struct r300_atom fs_rc_constant_state;
    538     /* Fragment shader constant buffer. */
    539     struct r300_atom fs_constants;
    540     /* Vertex shader constant buffer. */
    541     struct r300_atom vs_constants;
    542     /* Texture cache invalidate. */
    543     struct r300_atom texture_cache_inval;
    544     /* Textures state. */
    545     struct r300_atom textures_state;
    546     /* HiZ clear */
    547     struct r300_atom hiz_clear;
    548     /* zmask clear */
    549     struct r300_atom zmask_clear;
    550     /* Occlusion query. */
    551     struct r300_atom query_start;
    552 
    553     /* The pointers to the first and the last atom. */
    554     struct r300_atom *first_dirty, *last_dirty;
    555 
    556     /* Vertex elements for Gallium. */
    557     struct r300_vertex_element_state *velems;
    558 
    559     /* Vertex info for Draw. */
    560     struct vertex_info vertex_info;
    561 
    562     struct pipe_stencil_ref stencil_ref;
    563     struct pipe_viewport_state viewport;
    564 
    565     /* Stream locations for SWTCL. */
    566     int stream_loc_notcl[16];
    567 
    568     /* Flag indicating whether or not the HW is dirty. */
    569     uint32_t dirty_hw;
    570     /* Whether polygon offset is enabled. */
    571     boolean polygon_offset_enabled;
    572     /* Z buffer bit depth. */
    573     uint32_t zbuffer_bpp;
    574     /* Whether rendering is conditional and should be skipped. */
    575     boolean skip_rendering;
    576     /* The flag above saved by blitter. */
    577     unsigned char blitter_saved_skip_rendering;
    578     /* Point sprites texcoord index,  1 bit per texcoord */
    579     int sprite_coord_enable;
    580     /* Whether two-sided color selection is enabled (AKA light_twoside). */
    581     boolean two_sided_color;
    582     /* Whether fast color clear is enabled. */
    583     boolean cbzb_clear;
    584     /* Whether fragment shader needs to be validated. */
    585     enum r300_fs_validity_status fs_status;
    586     /* Framebuffer multi-write. */
    587     boolean fb_multiwrite;
    588 
    589     void *dsa_decompress_zmask;
    590 
    591     struct pipe_index_buffer index_buffer;
    592     struct pipe_vertex_buffer vertex_buffer[PIPE_MAX_ATTRIBS];
    593     unsigned nr_vertex_buffers;
    594     struct u_upload_mgr *uploader;
    595 
    596     struct util_slab_mempool pool_transfers;
    597 
    598     /* Stat counter. */
    599     uint64_t flush_counter;
    600 
    601     /* const tracking for VS */
    602     int vs_const_base;
    603 
    604     /* Vertex array state info */
    605     boolean vertex_arrays_dirty;
    606     boolean vertex_arrays_indexed;
    607     int vertex_arrays_offset;
    608     int vertex_arrays_instance_id;
    609     boolean instancing_enabled;
    610 
    611     /* Hyper-Z stats. */
    612     boolean hyperz_enabled;     /* Whether it owns Hyper-Z access. */
    613     int64_t hyperz_time_of_last_flush; /* Time of the last flush with Z clear. */
    614     unsigned num_z_clears;      /* Since the last flush. */
    615 
    616     /* ZMask state. */
    617     boolean zmask_in_use;       /* Whether ZMASK is enabled. */
    618     boolean zmask_decompress;   /* Whether ZMASK is being decompressed. */
    619     struct pipe_surface *locked_zbuffer; /* Unbound zbuffer which still has data in ZMASK. */
    620 
    621     /* HiZ state. */
    622     boolean hiz_in_use;         /* Whether HIZ is enabled. */
    623     enum r300_hiz_func hiz_func; /* HiZ function. Can be either MIN or MAX. */
    624     uint32_t hiz_clear_value;   /* HiZ clear value. */
    625 };
    626 
    627 #define foreach_atom(r300, atom) \
    628     for (atom = &r300->gpu_flush; atom != (&r300->query_start)+1; atom++)
    629 
    630 #define foreach_dirty_atom(r300, atom) \
    631     for (atom = r300->first_dirty; atom != r300->last_dirty; atom++)
    632 
    633 /* Convenience cast wrappers. */
    634 static INLINE struct r300_query* r300_query(struct pipe_query* q)
    635 {
    636     return (struct r300_query*)q;
    637 }
    638 
    639 static INLINE struct r300_surface* r300_surface(struct pipe_surface* surf)
    640 {
    641     return (struct r300_surface*)surf;
    642 }
    643 
    644 static INLINE struct r300_resource* r300_resource(struct pipe_resource* tex)
    645 {
    646     return (struct r300_resource*)tex;
    647 }
    648 
    649 static INLINE struct r300_context* r300_context(struct pipe_context* context)
    650 {
    651     return (struct r300_context*)context;
    652 }
    653 
    654 static INLINE struct r300_fragment_shader *r300_fs(struct r300_context *r300)
    655 {
    656     return (struct r300_fragment_shader*)r300->fs.state;
    657 }
    658 
    659 static INLINE void r300_mark_atom_dirty(struct r300_context *r300,
    660                                         struct r300_atom *atom)
    661 {
    662     atom->dirty = TRUE;
    663 
    664     if (!r300->first_dirty) {
    665         r300->first_dirty = atom;
    666         r300->last_dirty = atom+1;
    667     } else {
    668         if (atom < r300->first_dirty)
    669             r300->first_dirty = atom;
    670         else if (atom+1 > r300->last_dirty)
    671             r300->last_dirty = atom+1;
    672     }
    673 }
    674 
    675 struct pipe_context* r300_create_context(struct pipe_screen* screen,
    676                                          void *priv);
    677 
    678 /* Context initialization. */
    679 struct draw_stage* r300_draw_stage(struct r300_context* r300);
    680 void r300_init_blit_functions(struct r300_context *r300);
    681 void r300_init_flush_functions(struct r300_context* r300);
    682 void r300_init_query_functions(struct r300_context* r300);
    683 void r300_init_render_functions(struct r300_context *r300);
    684 void r300_init_state_functions(struct r300_context* r300);
    685 void r300_init_resource_functions(struct r300_context* r300);
    686 
    687 /* r300_blit.c */
    688 void r300_decompress_zmask(struct r300_context *r300);
    689 void r300_decompress_zmask_locked_unsafe(struct r300_context *r300);
    690 void r300_decompress_zmask_locked(struct r300_context *r300);
    691 bool r300_is_blit_supported(enum pipe_format format);
    692 
    693 /* r300_flush.c */
    694 void r300_flush(struct pipe_context *pipe,
    695                 unsigned flags,
    696                 struct pipe_fence_handle **fence);
    697 
    698 /* r300_hyperz.c */
    699 void r300_update_hyperz_state(struct r300_context* r300);
    700 
    701 /* r300_query.c */
    702 void r300_resume_query(struct r300_context *r300,
    703                        struct r300_query *query);
    704 void r300_stop_query(struct r300_context *r300);
    705 
    706 /* r300_render_translate.c */
    707 void r300_translate_index_buffer(struct r300_context *r300,
    708                                  struct pipe_index_buffer *ib,
    709                                  struct pipe_resource **out_index_buffer,
    710                                  unsigned *index_size, unsigned index_offset,
    711                                  unsigned *start, unsigned count);
    712 
    713 /* r300_render_stencilref.c */
    714 void r300_plug_in_stencil_ref_fallback(struct r300_context *r300);
    715 
    716 /* r300_render.c */
    717 void r300_draw_flush_vbuf(struct r300_context *r300);
    718 void r500_emit_index_bias(struct r300_context *r300, int index_bias);
    719 void r300_blitter_draw_rectangle(struct blitter_context *blitter,
    720                                  unsigned x1, unsigned y1,
    721                                  unsigned x2, unsigned y2,
    722                                  float depth,
    723                                  enum blitter_attrib_type type,
    724                                  const union pipe_color_union *attrib);
    725 
    726 /* r300_state.c */
    727 enum r300_fb_state_change {
    728     R300_CHANGED_FB_STATE = 0,
    729     R300_CHANGED_HYPERZ_FLAG,
    730     R300_CHANGED_MULTIWRITE
    731 };
    732 
    733 void r300_mark_fb_state_dirty(struct r300_context *r300,
    734                               enum r300_fb_state_change change);
    735 void r300_mark_fs_code_dirty(struct r300_context *r300);
    736 
    737 struct pipe_sampler_view *
    738 r300_create_sampler_view_custom(struct pipe_context *pipe,
    739                          struct pipe_resource *texture,
    740                          const struct pipe_sampler_view *templ,
    741                          unsigned width0_override,
    742                          unsigned height0_override);
    743 
    744 /* r300_state_derived.c */
    745 void r300_update_derived_state(struct r300_context* r300);
    746 
    747 /* r300_debug.c */
    748 void r500_dump_rs_block(struct r300_rs_block *rs);
    749 
    750 
    751 static INLINE boolean CTX_DBG_ON(struct r300_context * ctx, unsigned flags)
    752 {
    753     return SCREEN_DBG_ON(ctx->screen, flags);
    754 }
    755 
    756 static INLINE void CTX_DBG(struct r300_context * ctx, unsigned flags,
    757                        const char * fmt, ...)
    758 {
    759     if (CTX_DBG_ON(ctx, flags)) {
    760         va_list va;
    761         va_start(va, fmt);
    762         vfprintf(stderr, fmt, va);
    763         va_end(va);
    764     }
    765 }
    766 
    767 #define DBG_ON  CTX_DBG_ON
    768 #define DBG     CTX_DBG
    769 
    770 #endif /* R300_CONTEXT_H */
    771