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/*

 * Copyright © 2014 Intel Corporation

 *

 * 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 AUTHORS OR COPYRIGHT HOLDERS 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:

 *    Eric Anholt 

 *    Keith Packard 

 *    Xiang Haihao 

 *    Zhao Yakui 

 *

 */

/*

 * Most of rendering codes are ported from xf86-video-intel/src/i965_video.c

 */

#include 

#include 

#include 

#include 

#include 

#include 

#include "intel_batchbuffer.h"

#include "intel_driver.h"

#include "i965_defines.h"

#include "i965_drv_video.h"

#include "i965_structs.h"

#include "i965_render.h"

#define SF_KERNEL_NUM_GRF       16

#define SF_MAX_THREADS          1

#define PS_KERNEL_NUM_GRF       48

#define PS_MAX_THREADS          32

/* Programs for Gen8 */

static const uint32_t sf_kernel_static_gen8[][4] ={

};

static const uint32_t ps_kernel_static_gen8[][4] = {

#include "shaders/render/exa_wm_src_affine.g8b"

#include "shaders/render/exa_wm_src_sample_planar.g8b"

#include "shaders/render/exa_wm_yuv_color_balance.g8b"

#include "shaders/render/exa_wm_yuv_rgb.g8b"

#include "shaders/render/exa_wm_write.g8b"

};

static const uint32_t ps_subpic_kernel_static_gen8[][4] = {

#include "shaders/render/exa_wm_src_affine.g8b"

#include "shaders/render/exa_wm_src_sample_argb.g8b"

#include "shaders/render/exa_wm_write.g8b"

};

#define SURFACE_STATE_PADDED_SIZE       SURFACE_STATE_PADDED_SIZE_GEN8

#define SURFACE_STATE_OFFSET(index)     (SURFACE_STATE_PADDED_SIZE * index)

#define BINDING_TABLE_OFFSET            SURFACE_STATE_OFFSET(MAX_RENDER_SURFACES)

enum {

    SF_KERNEL = 0,

    PS_KERNEL,

    PS_SUBPIC_KERNEL

};

static struct i965_kernel render_kernels_gen8[] = {

    {

        "SF",

        SF_KERNEL,

        sf_kernel_static_gen8,

        sizeof(sf_kernel_static_gen8),

        NULL

    },

    {

        "PS",

        PS_KERNEL,

        ps_kernel_static_gen8,

        sizeof(ps_kernel_static_gen8),

        NULL

    },

    {

        "PS_SUBPIC",

        PS_SUBPIC_KERNEL,

        ps_subpic_kernel_static_gen8,

        sizeof(ps_subpic_kernel_static_gen8),

        NULL

    }

};

#define URB_VS_ENTRIES	      8

#define URB_VS_ENTRY_SIZE     1

#define URB_GS_ENTRIES	      0

#define URB_GS_ENTRY_SIZE     0

#define URB_CLIP_ENTRIES      0

#define URB_CLIP_ENTRY_SIZE   0

#define URB_SF_ENTRIES	      1

#define URB_SF_ENTRY_SIZE     2

#define URB_CS_ENTRIES	      4

#define URB_CS_ENTRY_SIZE     4

static float yuv_to_rgb_bt601[3][4] = {

{1.164,		0,	1.596,		-0.06275,},

{1.164,		-0.392,	-0.813,		-0.50196,},

{1.164,		2.017,	0,		-0.50196,},

};

static float yuv_to_rgb_bt709[3][4] = {

{1.164,		0,	1.793,		-0.06275,},

{1.164,		-0.213,	-0.533,		-0.50196,},

{1.164,		2.112,	0,		-0.50196,},

};

static float yuv_to_rgb_smpte_240[3][4] = {

{1.164,		0,	1.794,		-0.06275,},

{1.164,		-0.258,	-0.5425,	-0.50196,},

{1.164,		2.078,	0,		-0.50196,},

};

static void

gen8_render_set_surface_tiling(struct gen8_surface_state *ss, uint32_t tiling)

{

   switch (tiling) {

   case I915_TILING_NONE:

      ss->ss0.tiled_surface = 0;

      ss->ss0.tile_walk = 0;

      break;

   case I915_TILING_X:

      ss->ss0.tiled_surface = 1;

      ss->ss0.tile_walk = I965_TILEWALK_XMAJOR;

      break;

   case I915_TILING_Y:

      ss->ss0.tiled_surface = 1;

      ss->ss0.tile_walk = I965_TILEWALK_YMAJOR;

      break;

   }

}

/* Set "Shader Channel Select" for GEN8+ */

void

gen8_render_set_surface_scs(struct gen8_surface_state *ss)

{

    ss->ss7.shader_chanel_select_r = HSW_SCS_RED;

    ss->ss7.shader_chanel_select_g = HSW_SCS_GREEN;

    ss->ss7.shader_chanel_select_b = HSW_SCS_BLUE;

    ss->ss7.shader_chanel_select_a = HSW_SCS_ALPHA;

}

static void

gen8_render_set_surface_state(

    struct gen8_surface_state *ss,

    dri_bo                    *bo,

    unsigned long              offset,

    int                        width,

    int                        height,

    int                        pitch,

    int                        format,

    unsigned int               flags

)

{

    unsigned int tiling;

    unsigned int swizzle;

    memset(ss, 0, sizeof(*ss));

    switch (flags & (I965_PP_FLAG_TOP_FIELD|I965_PP_FLAG_BOTTOM_FIELD)) {

    case I965_PP_FLAG_BOTTOM_FIELD:

        ss->ss0.vert_line_stride_ofs = 1;

        /* fall-through */

    case I965_PP_FLAG_TOP_FIELD:

        ss->ss0.vert_line_stride = 1;

        height /= 2;

        break;

    }

    ss->ss0.surface_type = I965_SURFACE_2D;

    ss->ss0.surface_format = format;

    ss->ss8.base_addr = bo->offset + offset;

    ss->ss2.width = width - 1;

    ss->ss2.height = height - 1;

    ss->ss3.pitch = pitch - 1;

    /* Always set 1(align 4 mode) per B-spec */

    ss->ss0.vertical_alignment = 1;

    ss->ss0.horizontal_alignment = 1;

    dri_bo_get_tiling(bo, &tiling, &swizzle);

    gen8_render_set_surface_tiling(ss, tiling);

}

static void

gen8_render_src_surface_state(

    VADriverContextP ctx,

    int              index,

    dri_bo          *region,

    unsigned long    offset,

    int              w,

    int              h,

    int              pitch,

    int              format,

    unsigned int     flags

)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    void *ss;

    dri_bo *ss_bo = render_state->wm.surface_state_binding_table_bo;

    assert(index < MAX_RENDER_SURFACES);

    dri_bo_map(ss_bo, 1);

    assert(ss_bo->virtual);

    ss = (char *)ss_bo->virtual + SURFACE_STATE_OFFSET(index);

    gen8_render_set_surface_state(ss,

                                  region, offset,

                                  w, h,

                                  pitch, format, flags);

    gen8_render_set_surface_scs(ss);

    dri_bo_emit_reloc(ss_bo,

                      I915_GEM_DOMAIN_SAMPLER, 0,

                      offset,

                      SURFACE_STATE_OFFSET(index) + offsetof(struct gen8_surface_state, ss8),

                      region);

    ((unsigned int *)((char *)ss_bo->virtual + BINDING_TABLE_OFFSET))[index] = SURFACE_STATE_OFFSET(index);

    dri_bo_unmap(ss_bo);

    render_state->wm.sampler_count++;

}

static void

gen8_render_src_surfaces_state(

    VADriverContextP ctx,

    struct object_surface *obj_surface,

    unsigned int     flags

)

{

    int region_pitch;

    int rw, rh;

    dri_bo *region;

    region_pitch = obj_surface->width;

    rw = obj_surface->orig_width;

    rh = obj_surface->orig_height;

    region = obj_surface->bo;

    gen8_render_src_surface_state(ctx, 1, region, 0, rw, rh, region_pitch, I965_SURFACEFORMAT_R8_UNORM, flags);     /* Y */

    gen8_render_src_surface_state(ctx, 2, region, 0, rw, rh, region_pitch, I965_SURFACEFORMAT_R8_UNORM, flags);

    if (obj_surface->fourcc == VA_FOURCC_Y800) /* single plane for grayscale */

        return;

    if (obj_surface->fourcc == VA_FOURCC_NV12) {

        gen8_render_src_surface_state(ctx, 3, region,

                                      region_pitch * obj_surface->y_cb_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8G8_UNORM, flags); /* UV */

        gen8_render_src_surface_state(ctx, 4, region,

                                      region_pitch * obj_surface->y_cb_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8G8_UNORM, flags);

    } else {

        gen8_render_src_surface_state(ctx, 3, region,

                                      region_pitch * obj_surface->y_cb_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8_UNORM, flags); /* U */

        gen8_render_src_surface_state(ctx, 4, region,

                                      region_pitch * obj_surface->y_cb_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8_UNORM, flags);

        gen8_render_src_surface_state(ctx, 5, region,

                                      region_pitch * obj_surface->y_cr_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8_UNORM, flags); /* V */

        gen8_render_src_surface_state(ctx, 6, region,

                                      region_pitch * obj_surface->y_cr_offset,

                                      obj_surface->cb_cr_width, obj_surface->cb_cr_height, obj_surface->cb_cr_pitch,

                                      I965_SURFACEFORMAT_R8_UNORM, flags);

    }

}

static void

gen8_subpic_render_src_surfaces_state(VADriverContextP ctx,

                                      struct object_surface *obj_surface)

{

    dri_bo *subpic_region;

    unsigned int index = obj_surface->subpic_render_idx;

    struct object_subpic *obj_subpic = obj_surface->obj_subpic[index];

    struct object_image *obj_image = obj_subpic->obj_image;

    assert(obj_surface);

    assert(obj_surface->bo);

    subpic_region = obj_image->bo;

    /*subpicture surface*/

    gen8_render_src_surface_state(ctx, 1, subpic_region, 0, obj_subpic->width, obj_subpic->height, obj_subpic->pitch, obj_subpic->format, 0);

    gen8_render_src_surface_state(ctx, 2, subpic_region, 0, obj_subpic->width, obj_subpic->height, obj_subpic->pitch, obj_subpic->format, 0);

}

static void

gen8_render_dest_surface_state(VADriverContextP ctx, int index)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct intel_region *dest_region = render_state->draw_region;

    void *ss;

    dri_bo *ss_bo = render_state->wm.surface_state_binding_table_bo;

    int format;

    assert(index < MAX_RENDER_SURFACES);

    if (dest_region->cpp == 2) {

	format = I965_SURFACEFORMAT_B5G6R5_UNORM;

    } else {

	format = I965_SURFACEFORMAT_B8G8R8A8_UNORM;

    }

    dri_bo_map(ss_bo, 1);

    assert(ss_bo->virtual);

    ss = (char *)ss_bo->virtual + SURFACE_STATE_OFFSET(index);

    gen8_render_set_surface_state(ss,

                                  dest_region->bo, 0,

                                  dest_region->width, dest_region->height,

                                  dest_region->pitch, format, 0);

    gen8_render_set_surface_scs(ss);

    dri_bo_emit_reloc(ss_bo,

                      I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,

                      0,

                      SURFACE_STATE_OFFSET(index) + offsetof(struct gen8_surface_state, ss8),

                      dest_region->bo);

    ((unsigned int *)((char *)ss_bo->virtual + BINDING_TABLE_OFFSET))[index] = SURFACE_STATE_OFFSET(index);

    dri_bo_unmap(ss_bo);

}

static void

i965_fill_vertex_buffer(

    VADriverContextP ctx,

    float tex_coords[4], /* [(u1,v1);(u2,v2)] */

    float vid_coords[4]  /* [(x1,y1);(x2,y2)] */

)

{

    struct i965_driver_data * const i965 = i965_driver_data(ctx);

    float vb[12];

    enum { X1, Y1, X2, Y2 };

    static const unsigned int g_rotation_indices[][6] = {

        [VA_ROTATION_NONE] = { X2, Y2, X1, Y2, X1, Y1 },

        [VA_ROTATION_90]   = { X2, Y1, X2, Y2, X1, Y2 },

        [VA_ROTATION_180]  = { X1, Y1, X2, Y1, X2, Y2 },

        [VA_ROTATION_270]  = { X1, Y2, X1, Y1, X2, Y1 },

    };

    const unsigned int * const rotation_indices =

        g_rotation_indices[i965->rotation_attrib->value];

    vb[0]  = tex_coords[rotation_indices[0]]; /* bottom-right corner */

    vb[1]  = tex_coords[rotation_indices[1]];

    vb[2]  = vid_coords[X2];

    vb[3]  = vid_coords[Y2];

    vb[4]  = tex_coords[rotation_indices[2]]; /* bottom-left corner */

    vb[5]  = tex_coords[rotation_indices[3]];

    vb[6]  = vid_coords[X1];

    vb[7]  = vid_coords[Y2];

    vb[8]  = tex_coords[rotation_indices[4]]; /* top-left corner */

    vb[9]  = tex_coords[rotation_indices[5]];

    vb[10] = vid_coords[X1];

    vb[11] = vid_coords[Y1];

    dri_bo_subdata(i965->render_state.vb.vertex_buffer, 0, sizeof(vb), vb);

}

static void

i965_subpic_render_upload_vertex(VADriverContextP ctx,

                                 struct object_surface *obj_surface,

                                 const VARectangle *output_rect)

{

    unsigned int index = obj_surface->subpic_render_idx;

    struct object_subpic     *obj_subpic   = obj_surface->obj_subpic[index];

    float tex_coords[4], vid_coords[4];

    VARectangle dst_rect;

    if (obj_subpic->flags & VA_SUBPICTURE_DESTINATION_IS_SCREEN_COORD)

        dst_rect = obj_subpic->dst_rect;

    else {

        const float sx  = (float)output_rect->width  / obj_surface->orig_width;

        const float sy  = (float)output_rect->height / obj_surface->orig_height;

        dst_rect.x      = output_rect->x + sx * obj_subpic->dst_rect.x;

        dst_rect.y      = output_rect->y + sy * obj_subpic->dst_rect.y;

        dst_rect.width  = sx * obj_subpic->dst_rect.width;

        dst_rect.height = sy * obj_subpic->dst_rect.height;

    }

    tex_coords[0] = (float)obj_subpic->src_rect.x / obj_subpic->width;

    tex_coords[1] = (float)obj_subpic->src_rect.y / obj_subpic->height;

    tex_coords[2] = (float)(obj_subpic->src_rect.x + obj_subpic->src_rect.width) / obj_subpic->width;

    tex_coords[3] = (float)(obj_subpic->src_rect.y + obj_subpic->src_rect.height) / obj_subpic->height;

    vid_coords[0] = dst_rect.x;

    vid_coords[1] = dst_rect.y;

    vid_coords[2] = (float)(dst_rect.x + dst_rect.width);

    vid_coords[3] = (float)(dst_rect.y + dst_rect.height);

    i965_fill_vertex_buffer(ctx, tex_coords, vid_coords);

}

static void

i965_render_upload_vertex(

    VADriverContextP   ctx,

    struct object_surface *obj_surface,

    const VARectangle *src_rect,

    const VARectangle *dst_rect

)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct intel_region *dest_region = render_state->draw_region;

    float tex_coords[4], vid_coords[4];

    int width, height;

    width  = obj_surface->orig_width;

    height = obj_surface->orig_height;

    tex_coords[0] = (float)src_rect->x / width;

    tex_coords[1] = (float)src_rect->y / height;

    tex_coords[2] = (float)(src_rect->x + src_rect->width) / width;

    tex_coords[3] = (float)(src_rect->y + src_rect->height) / height;

    vid_coords[0] = dest_region->x + dst_rect->x;

    vid_coords[1] = dest_region->y + dst_rect->y;

    vid_coords[2] = vid_coords[0] + dst_rect->width;

    vid_coords[3] = vid_coords[1] + dst_rect->height;

    i965_fill_vertex_buffer(ctx, tex_coords, vid_coords);

}

static void

i965_render_drawing_rectangle(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    struct i965_render_state *render_state = &i965->render_state;

    struct intel_region *dest_region = render_state->draw_region;

    BEGIN_BATCH(batch, 4);

    OUT_BATCH(batch, CMD_DRAWING_RECTANGLE | 2);

    OUT_BATCH(batch, 0x00000000);

    OUT_BATCH(batch, (dest_region->width - 1) | (dest_region->height - 1) << 16);

    OUT_BATCH(batch, 0x00000000);

    ADVANCE_BATCH(batch);

}

static void

i965_render_upload_image_palette(

    VADriverContextP ctx,

    struct object_image *obj_image,

    unsigned int     alpha

)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    unsigned int i;

    assert(obj_image);

    if (!obj_image)

        return;

    if (obj_image->image.num_palette_entries == 0)

        return;

    BEGIN_BATCH(batch, 1 + obj_image->image.num_palette_entries);

    OUT_BATCH(batch, CMD_SAMPLER_PALETTE_LOAD | (obj_image->image.num_palette_entries - 1));

    /*fill palette*/

    //int32_t out[16]; //0-23:color 23-31:alpha

    for (i = 0; i < obj_image->image.num_palette_entries; i++)

        OUT_BATCH(batch, (alpha << 24) | obj_image->palette[i]);

    ADVANCE_BATCH(batch);

}

static void

gen8_clear_dest_region(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    struct i965_render_state *render_state = &i965->render_state;

    struct intel_region *dest_region = render_state->draw_region;

    unsigned int blt_cmd, br13;

    int pitch;

    blt_cmd = GEN8_XY_COLOR_BLT_CMD;

    br13 = 0xf0 << 16;

    pitch = dest_region->pitch;

    if (dest_region->cpp == 4) {

        br13 |= BR13_8888;

        blt_cmd |= (XY_COLOR_BLT_WRITE_RGB | XY_COLOR_BLT_WRITE_ALPHA);

    } else {

        assert(dest_region->cpp == 2);

        br13 |= BR13_565;

    }

    if (dest_region->tiling != I915_TILING_NONE) {

        blt_cmd |= XY_COLOR_BLT_DST_TILED;

        pitch /= 4;

    }

    br13 |= pitch;

    intel_batchbuffer_start_atomic_blt(batch, 24);

    BEGIN_BLT_BATCH(batch, 7);

    OUT_BATCH(batch, blt_cmd);

    OUT_BATCH(batch, br13);

    OUT_BATCH(batch, (dest_region->y << 16) | (dest_region->x));

    OUT_BATCH(batch, ((dest_region->y + dest_region->height) << 16) |

              (dest_region->x + dest_region->width));

    OUT_RELOC(batch, dest_region->bo,

              I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,

              0);

    OUT_BATCH(batch, 0x0);

    OUT_BATCH(batch, 0x0);

    ADVANCE_BATCH(batch);

    intel_batchbuffer_end_atomic(batch);

}

/*

 * for GEN8

 */

#define ALIGNMENT       64

static void

gen8_render_initialize(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    dri_bo *bo;

    int size;

    unsigned int end_offset;

    /* VERTEX BUFFER */

    dri_bo_unreference(render_state->vb.vertex_buffer);

    bo = dri_bo_alloc(i965->intel.bufmgr,

                      "vertex buffer",

                      4096,

                      4096);

    assert(bo);

    render_state->vb.vertex_buffer = bo;

    /* WM */

    dri_bo_unreference(render_state->wm.surface_state_binding_table_bo);

    bo = dri_bo_alloc(i965->intel.bufmgr,

                      "surface state & binding table",

                      (SURFACE_STATE_PADDED_SIZE + sizeof(unsigned int)) * MAX_RENDER_SURFACES,

                      4096);

    assert(bo);

    render_state->wm.surface_state_binding_table_bo = bo;

    render_state->curbe_size = 256;

    render_state->wm.sampler_count = 0;

    render_state->sampler_size = MAX_SAMPLERS * sizeof(struct gen8_sampler_state);

    render_state->cc_state_size = sizeof(struct gen6_color_calc_state);

    render_state->cc_viewport_size = sizeof(struct i965_cc_viewport);

    render_state->blend_state_size = sizeof(struct gen8_global_blend_state) +

			16 * sizeof(struct gen8_blend_state_rt);

    render_state->sf_clip_size = 1024;

    render_state->scissor_size = 1024;

    size = ALIGN(render_state->curbe_size, ALIGNMENT) +

        ALIGN(render_state->sampler_size, ALIGNMENT) +

        ALIGN(render_state->cc_viewport_size, ALIGNMENT) +

        ALIGN(render_state->cc_state_size, ALIGNMENT) +

        ALIGN(render_state->blend_state_size, ALIGNMENT) +

        ALIGN(render_state->sf_clip_size, ALIGNMENT) +

        ALIGN(render_state->scissor_size, ALIGNMENT);

    dri_bo_unreference(render_state->dynamic_state.bo);

    bo = dri_bo_alloc(i965->intel.bufmgr,

                      "dynamic_state",

                      size,

                      4096);

    render_state->dynamic_state.bo = bo;

    end_offset = 0;

    render_state->dynamic_state.end_offset = 0;

    /* Constant buffer offset */

    render_state->curbe_offset = end_offset;

    end_offset += ALIGN(render_state->curbe_size, ALIGNMENT);

    /* Sampler_state  */

    render_state->sampler_offset = end_offset;

    end_offset += ALIGN(render_state->sampler_size, ALIGNMENT);

    /* CC_VIEWPORT_state  */

    render_state->cc_viewport_offset = end_offset;

    end_offset += ALIGN(render_state->cc_viewport_size, ALIGNMENT);

    /* CC_STATE_state  */

    render_state->cc_state_offset = end_offset;

    end_offset += ALIGN(render_state->cc_state_size, ALIGNMENT);

    /* Blend_state  */

    render_state->blend_state_offset = end_offset;

    end_offset += ALIGN(render_state->blend_state_size, ALIGNMENT);

    /* SF_CLIP_state  */

    render_state->sf_clip_offset = end_offset;

    end_offset += ALIGN(render_state->sf_clip_size, ALIGNMENT);

    /* SCISSOR_state  */

    render_state->scissor_offset = end_offset;

    end_offset += ALIGN(render_state->scissor_size, ALIGNMENT);

    /* update the end offset of dynamic_state */

    render_state->dynamic_state.end_offset = end_offset;

}

static void

gen8_render_sampler(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct gen8_sampler_state *sampler_state;

    int i;

    unsigned char *cc_ptr;

    assert(render_state->wm.sampler_count > 0);

    assert(render_state->wm.sampler_count <= MAX_SAMPLERS);

    dri_bo_map(render_state->dynamic_state.bo, 1);

    assert(render_state->dynamic_state.bo->virtual);

    cc_ptr = (unsigned char *) render_state->dynamic_state.bo->virtual +

			render_state->sampler_offset;

    sampler_state = (struct gen8_sampler_state *) cc_ptr;

    for (i = 0; i < render_state->wm.sampler_count; i++) {

        memset(sampler_state, 0, sizeof(*sampler_state));

        sampler_state->ss0.min_filter = I965_MAPFILTER_LINEAR;

        sampler_state->ss0.mag_filter = I965_MAPFILTER_LINEAR;

        sampler_state->ss3.r_wrap_mode = I965_TEXCOORDMODE_CLAMP;

        sampler_state->ss3.s_wrap_mode = I965_TEXCOORDMODE_CLAMP;

        sampler_state->ss3.t_wrap_mode = I965_TEXCOORDMODE_CLAMP;

        sampler_state++;

    }

    dri_bo_unmap(render_state->dynamic_state.bo);

}

static void

gen8_render_blend_state(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct gen8_global_blend_state *global_blend_state;

    struct gen8_blend_state_rt *blend_state;

    unsigned char *cc_ptr;

    dri_bo_map(render_state->dynamic_state.bo, 1);

    assert(render_state->dynamic_state.bo->virtual);

    cc_ptr = (unsigned char *) render_state->dynamic_state.bo->virtual +

			render_state->blend_state_offset;

    global_blend_state = (struct gen8_global_blend_state*) cc_ptr;

    memset(global_blend_state, 0, render_state->blend_state_size);

    /* Global blend state + blend_state for Render Target */

    blend_state = (struct gen8_blend_state_rt *)(global_blend_state + 1);

    blend_state->blend1.logic_op_enable = 1;

    blend_state->blend1.logic_op_func = 0xc;

    blend_state->blend1.pre_blend_clamp_enable = 1;

    dri_bo_unmap(render_state->dynamic_state.bo);

}

static void

gen8_render_cc_viewport(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct i965_cc_viewport *cc_viewport;

    unsigned char *cc_ptr;

    dri_bo_map(render_state->dynamic_state.bo, 1);

    assert(render_state->dynamic_state.bo->virtual);

    cc_ptr = (unsigned char *) render_state->dynamic_state.bo->virtual +

			render_state->cc_viewport_offset;

    cc_viewport = (struct i965_cc_viewport *) cc_ptr;

    memset(cc_viewport, 0, sizeof(*cc_viewport));

    cc_viewport->min_depth = -1.e35;

    cc_viewport->max_depth = 1.e35;

    dri_bo_unmap(render_state->dynamic_state.bo);

}

static void

gen8_render_color_calc_state(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    struct gen6_color_calc_state *color_calc_state;

    unsigned char *cc_ptr;

    dri_bo_map(render_state->dynamic_state.bo, 1);

    assert(render_state->dynamic_state.bo->virtual);

    cc_ptr = (unsigned char *) render_state->dynamic_state.bo->virtual +

			render_state->cc_state_offset;

    color_calc_state = (struct gen6_color_calc_state *) cc_ptr;

    memset(color_calc_state, 0, sizeof(*color_calc_state));

    color_calc_state->constant_r = 1.0;

    color_calc_state->constant_g = 0.0;

    color_calc_state->constant_b = 1.0;

    color_calc_state->constant_a = 1.0;

    dri_bo_unmap(render_state->dynamic_state.bo);

}

#define PI  3.1415926

static void

gen8_render_upload_constants(VADriverContextP ctx,

                             struct object_surface *obj_surface,

                             unsigned int flags)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct i965_render_state *render_state = &i965->render_state;

    unsigned short *constant_buffer;

    unsigned char *cc_ptr;

    float *color_balance_base;

    float contrast = (float)i965->contrast_attrib->value / DEFAULT_CONTRAST;

    float brightness = (float)i965->brightness_attrib->value / 255; /* YUV is float in the shader */

    float hue = (float)i965->hue_attrib->value / 180 * PI;

    float saturation = (float)i965->saturation_attrib->value / DEFAULT_SATURATION;

    float *yuv_to_rgb;

    unsigned int color_flag;

    dri_bo_map(render_state->dynamic_state.bo, 1);

    assert(render_state->dynamic_state.bo->virtual);

    cc_ptr = (unsigned char *) render_state->dynamic_state.bo->virtual +

			render_state->curbe_offset;

    constant_buffer = (unsigned short *) cc_ptr;

    if (obj_surface->subsampling == SUBSAMPLE_YUV400) {

        assert(obj_surface->fourcc == VA_FOURCC_Y800);

        *constant_buffer = 2;

    } else {

        if (obj_surface->fourcc == VA_FOURCC_NV12)

            *constant_buffer = 1;

        else

            *constant_buffer = 0;

    }

    if (i965->contrast_attrib->value == DEFAULT_CONTRAST &&

        i965->brightness_attrib->value == DEFAULT_BRIGHTNESS &&

        i965->hue_attrib->value == DEFAULT_HUE &&

        i965->saturation_attrib->value == DEFAULT_SATURATION)

        constant_buffer[1] = 1; /* skip color balance transformation */

    else

        constant_buffer[1] = 0;

    color_balance_base = (float *)constant_buffer + 4;

    *color_balance_base++ = contrast;

    *color_balance_base++ = brightness;

    *color_balance_base++ = cos(hue) * contrast * saturation;

    *color_balance_base++ = sin(hue) * contrast * saturation;

    color_flag = flags & VA_SRC_COLOR_MASK;

    yuv_to_rgb = (float *)constant_buffer + 8;

    if (color_flag == VA_SRC_BT709)

        memcpy(yuv_to_rgb, yuv_to_rgb_bt709, sizeof(yuv_to_rgb_bt709));

    else if (color_flag == VA_SRC_SMPTE_240)

        memcpy(yuv_to_rgb, yuv_to_rgb_smpte_240, sizeof(yuv_to_rgb_smpte_240));

    else

        memcpy(yuv_to_rgb, yuv_to_rgb_bt601, sizeof(yuv_to_rgb_bt601));

    dri_bo_unmap(render_state->dynamic_state.bo);

}

static void

gen8_render_setup_states(

    VADriverContextP   ctx,

    struct object_surface *obj_surface,

    const VARectangle *src_rect,

    const VARectangle *dst_rect,

    unsigned int       flags

)

{

    gen8_render_dest_surface_state(ctx, 0);

    gen8_render_src_surfaces_state(ctx, obj_surface, flags);

    gen8_render_sampler(ctx);

    gen8_render_cc_viewport(ctx);

    gen8_render_color_calc_state(ctx);

    gen8_render_blend_state(ctx);

    gen8_render_upload_constants(ctx, obj_surface, flags);

    i965_render_upload_vertex(ctx, obj_surface, src_rect, dst_rect);

}

static void

gen8_emit_state_base_address(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    struct i965_render_state *render_state = &i965->render_state;

    BEGIN_BATCH(batch, 16);

    OUT_BATCH(batch, CMD_STATE_BASE_ADDRESS | (16 - 2));

    OUT_BATCH(batch, BASE_ADDRESS_MODIFY); /* General state base address */

	OUT_BATCH(batch, 0);

	OUT_BATCH(batch, 0);

	/*DW4 */

    OUT_RELOC(batch, render_state->wm.surface_state_binding_table_bo, I915_GEM_DOMAIN_INSTRUCTION, 0, BASE_ADDRESS_MODIFY); /* Surface state base address */

	OUT_BATCH(batch, 0);

	/*DW6*/

    /* Dynamic state base address */

    OUT_RELOC(batch, render_state->dynamic_state.bo, I915_GEM_DOMAIN_RENDER | I915_GEM_DOMAIN_SAMPLER,

		0, BASE_ADDRESS_MODIFY);

    OUT_BATCH(batch, 0);

	/*DW8*/

    OUT_BATCH(batch, BASE_ADDRESS_MODIFY); /* Indirect object base address */

    OUT_BATCH(batch, 0);

	/*DW10 */

    /* Instruction base address */

    OUT_RELOC(batch, render_state->instruction_state.bo, I915_GEM_DOMAIN_INSTRUCTION, 0, BASE_ADDRESS_MODIFY);

    OUT_BATCH(batch, 0);

	/*DW12 */

    OUT_BATCH(batch, 0xFFFF0000 | BASE_ADDRESS_MODIFY); /* General state upper bound */

    OUT_BATCH(batch, 0xFFFF0000 | BASE_ADDRESS_MODIFY); /* Dynamic state upper bound */

    OUT_BATCH(batch, 0xFFFF0000 | BASE_ADDRESS_MODIFY); /* Indirect object upper bound */

    OUT_BATCH(batch, 0xFFFF0000 | BASE_ADDRESS_MODIFY); /* Instruction access upper bound */

    ADVANCE_BATCH(batch);

}

static void

gen8_emit_cc_state_pointers(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    struct i965_render_state *render_state = &i965->render_state;

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN6_3DSTATE_CC_STATE_POINTERS | (2 - 2));

    OUT_BATCH(batch, (render_state->cc_state_offset + 1));

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_BLEND_STATE_POINTERS | (2 - 2));

    OUT_BATCH(batch, (render_state->blend_state_offset + 1));

    ADVANCE_BATCH(batch);

}

static void

gen8_emit_vertices(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    struct i965_render_state *render_state = &i965->render_state;

    BEGIN_BATCH(batch, 5);

    OUT_BATCH(batch, CMD_VERTEX_BUFFERS | (5 - 2));

    OUT_BATCH(batch,

              (0 << GEN8_VB0_BUFFER_INDEX_SHIFT) |

	      (0 << GEN8_VB0_MOCS_SHIFT) |

              GEN7_VB0_ADDRESS_MODIFYENABLE |

              ((4 * 4) << VB0_BUFFER_PITCH_SHIFT));

    OUT_RELOC(batch, render_state->vb.vertex_buffer, I915_GEM_DOMAIN_VERTEX, 0, 0);

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 12 * 4);

    ADVANCE_BATCH(batch);

    /* Topology in 3D primitive is overrided by VF_TOPOLOGY command */

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN8_3DSTATE_VF_TOPOLOGY | (2 - 2));

    OUT_BATCH(batch,

              _3DPRIM_RECTLIST);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 7);

    OUT_BATCH(batch, CMD_3DPRIMITIVE | (7 - 2));

    OUT_BATCH(batch,

              GEN7_3DPRIM_VERTEXBUFFER_ACCESS_SEQUENTIAL);

    OUT_BATCH(batch, 3); /* vertex count per instance */

    OUT_BATCH(batch, 0); /* start vertex offset */

    OUT_BATCH(batch, 1); /* single instance */

    OUT_BATCH(batch, 0); /* start instance location */

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

}

static void

gen8_emit_vertex_element_state(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    /*

     * The VUE layout

     * dword 0-3: pad (0, 0, 0. 0)

     * dword 4-7: position (x, y, 1.0, 1.0),

     * dword 8-11: texture coordinate 0 (u0, v0, 1.0, 1.0)

     */

    /* Set up our vertex elements, sourced from the single vertex buffer. */

    OUT_BATCH(batch, CMD_VERTEX_ELEMENTS | (7 - 2));

    /* Element state 0. These are 4 dwords of 0 required for the VUE format.

     * We don't really know or care what they do.

     */

    OUT_BATCH(batch, (0 << GEN8_VE0_VERTEX_BUFFER_INDEX_SHIFT) |

              GEN8_VE0_VALID |

              (I965_SURFACEFORMAT_R32G32_FLOAT << VE0_FORMAT_SHIFT) |

              (0 << VE0_OFFSET_SHIFT));

    OUT_BATCH(batch, (I965_VFCOMPONENT_STORE_0 << VE1_VFCOMPONENT_0_SHIFT) |

              (I965_VFCOMPONENT_STORE_0 << VE1_VFCOMPONENT_1_SHIFT) |

              (I965_VFCOMPONENT_STORE_0 << VE1_VFCOMPONENT_2_SHIFT) |

              (I965_VFCOMPONENT_STORE_0 << VE1_VFCOMPONENT_3_SHIFT));

    /* offset 8: X, Y -> {x, y, 1.0, 1.0} */

    OUT_BATCH(batch, (0 << GEN8_VE0_VERTEX_BUFFER_INDEX_SHIFT) |

              GEN8_VE0_VALID |

              (I965_SURFACEFORMAT_R32G32_FLOAT << VE0_FORMAT_SHIFT) |

              (8 << VE0_OFFSET_SHIFT));

    OUT_BATCH(batch, (I965_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_0_SHIFT) |

	      (I965_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_1_SHIFT) |

              (I965_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_2_SHIFT) |

              (I965_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_3_SHIFT));

    /* offset 0: u,v -> {U, V, 1.0, 1.0} */

    OUT_BATCH(batch, (0 << GEN8_VE0_VERTEX_BUFFER_INDEX_SHIFT) |

              GEN8_VE0_VALID |

              (I965_SURFACEFORMAT_R32G32_FLOAT << VE0_FORMAT_SHIFT) |

              (0 << VE0_OFFSET_SHIFT));

    OUT_BATCH(batch, (I965_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_0_SHIFT) |

              (I965_VFCOMPONENT_STORE_SRC << VE1_VFCOMPONENT_1_SHIFT) |

              (I965_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_2_SHIFT) |

              (I965_VFCOMPONENT_STORE_1_FLT << VE1_VFCOMPONENT_3_SHIFT));

}

static void

gen8_emit_vs_state(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    /* disable VS constant buffer */

    BEGIN_BATCH(batch, 11);

    OUT_BATCH(batch, GEN6_3DSTATE_CONSTANT_VS | (11 - 2));

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    /* CS Buffer 0 */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    /* CS Buffer 1 */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    /* CS Buffer 2 */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    /* CS Buffer 3 */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 9);

    OUT_BATCH(batch, GEN6_3DSTATE_VS | (9 - 2));

    OUT_BATCH(batch, 0); /* without VS kernel */

    OUT_BATCH(batch, 0);

    /* VS shader dispatch flag */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0);

    /* DW6. VS shader GRF and URB buffer definition */

    OUT_BATCH(batch, 0);

    OUT_BATCH(batch, 0); /* pass-through */

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_BINDING_TABLE_POINTERS_VS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_SAMPLER_STATE_POINTERS_VS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

}

/*

 * URB layout on GEN8

 * ----------------------------------------

 * | PS Push Constants (8KB) | VS entries |

 * ----------------------------------------

 */

static void

gen8_emit_urb(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;

    unsigned int num_urb_entries = 64;

    /* The minimum urb entries is 64 */

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_PUSH_CONSTANT_ALLOC_VS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_PUSH_CONSTANT_ALLOC_DS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_PUSH_CONSTANT_ALLOC_HS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_PUSH_CONSTANT_ALLOC_GS | (2 - 2));

    OUT_BATCH(batch, 0);

    ADVANCE_BATCH(batch);

    /* Size is 8Kbs and base address is 0Kb */

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_PUSH_CONSTANT_ALLOC_PS | (2 - 2));

    /* Size is 8Kbs and base address is 0Kb */

    OUT_BATCH(batch,

		(0 << GEN8_PUSH_CONSTANT_BUFFER_OFFSET_SHIFT) |

		(8 << GEN8_PUSH_CONSTANT_BUFFER_SIZE_SHIFT));

    ADVANCE_BATCH(batch);

    BEGIN_BATCH(batch, 2);

    OUT_BATCH(batch, GEN7_3DSTATE_URB_VS | (2 - 2));

    OUT_BATCH(batch,

              (num_urb_entries << GEN7_URB_ENTRY_NUMBER_SHIFT) |

              (4 - 1) << GEN7_URB_ENTRY_SIZE_SHIFT |

              (4 << GEN7_URB_STARTING_ADDRESS_SHIFT));

   ADVANCE_BATCH(batch);

   BEGIN_BATCH(batch, 2);

   OUT_BATCH(batch, GEN7_3DSTATE_URB_GS | (2 - 2));

   OUT_BATCH(batch,

             (0 << GEN7_URB_ENTRY_SIZE_SHIFT) |

             (5 << GEN7_URB_STARTING_ADDRESS_SHIFT));

   ADVANCE_BATCH(batch);

   BEGIN_BATCH(batch, 2);

   OUT_BATCH(batch, GEN7_3DSTATE_URB_HS | (2 - 2));

   OUT_BATCH(batch,

             (0 << GEN7_URB_ENTRY_SIZE_SHIFT) |

             (6 << GEN7_URB_STARTING_ADDRESS_SHIFT));

   ADVANCE_BATCH(batch);

   BEGIN_BATCH(batch, 2);

   OUT_BATCH(batch, GEN7_3DSTATE_URB_DS | (2 - 2));

   OUT_BATCH(batch,

             (0 << GEN7_URB_ENTRY_SIZE_SHIFT) |

             (7 << GEN7_URB_STARTING_ADDRESS_SHIFT));

   ADVANCE_BATCH(batch);

}

static void

gen8_emit_bypass_state(VADriverContextP ctx)

{

    struct i965_driver_data *i965 = i965_driver_data(ctx);

    struct intel_batchbuffer *batch = i965->batch;