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/**************************************************************************

 *

 * Copyright 2009 VMware, Inc.

 * 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 VMWARE 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.

 *

 **************************************************************************/

/**

 * @file

 * C - JIT interfaces

 *

 * @author Jose Fonseca 

 */

#ifndef LP_JIT_H

#define LP_JIT_H

#include "gallivm/lp_bld_struct.h"

#include "gallivm/lp_bld_limits.h"

#include "pipe/p_state.h"

#include "lp_texture.h"

struct lp_fragment_shader_variant;

struct llvmpipe_screen;

struct lp_jit_texture

{

   uint32_t width;        /* same as number of elements */

   uint32_t height;

   uint32_t depth;        /* doubles as array size */

   uint32_t first_level;

   uint32_t last_level;

   const void *base;

   uint32_t row_stride[LP_MAX_TEXTURE_LEVELS];

   uint32_t img_stride[LP_MAX_TEXTURE_LEVELS];

   uint32_t mip_offsets[LP_MAX_TEXTURE_LEVELS];

};

struct lp_jit_sampler

{

   float min_lod;

   float max_lod;

   float lod_bias;

   float border_color[4];

};

struct lp_jit_viewport

{

   float min_depth;

   float max_depth;

};

enum {

   LP_JIT_TEXTURE_WIDTH = 0,

   LP_JIT_TEXTURE_HEIGHT,

   LP_JIT_TEXTURE_DEPTH,

   LP_JIT_TEXTURE_FIRST_LEVEL,

   LP_JIT_TEXTURE_LAST_LEVEL,

   LP_JIT_TEXTURE_BASE,

   LP_JIT_TEXTURE_ROW_STRIDE,

   LP_JIT_TEXTURE_IMG_STRIDE,

   LP_JIT_TEXTURE_MIP_OFFSETS,

   LP_JIT_TEXTURE_NUM_FIELDS  /* number of fields above */

};

enum {

   LP_JIT_SAMPLER_MIN_LOD,

   LP_JIT_SAMPLER_MAX_LOD,

   LP_JIT_SAMPLER_LOD_BIAS,

   LP_JIT_SAMPLER_BORDER_COLOR,

   LP_JIT_SAMPLER_NUM_FIELDS  /* number of fields above */

};

enum {

   LP_JIT_VIEWPORT_MIN_DEPTH,

   LP_JIT_VIEWPORT_MAX_DEPTH,

   LP_JIT_VIEWPORT_NUM_FIELDS /* number of fields above */

};

/**

 * This structure is passed directly to the generated fragment shader.

 *

 * It contains the derived state.

 *

 * Changes here must be reflected in the lp_jit_context_* macros and

 * lp_jit_init_types function. Changes to the ordering should be avoided.

 *

 * Only use types with a clear size and padding here, in particular prefer the

 * stdint.h types to the basic integer types.

 */

struct lp_jit_context

{

   const float *constants[LP_MAX_TGSI_CONST_BUFFERS];

   int num_constants[LP_MAX_TGSI_CONST_BUFFERS];

   float alpha_ref_value;

   uint32_t stencil_ref_front, stencil_ref_back;

   uint8_t *u8_blend_color;

   float *f_blend_color;

   struct lp_jit_viewport *viewports;

   struct lp_jit_texture textures[PIPE_MAX_SHADER_SAMPLER_VIEWS];

   struct lp_jit_sampler samplers[PIPE_MAX_SAMPLERS];

};

/**

 * These enum values must match the position of the fields in the

 * lp_jit_context struct above.

 */

enum {

   LP_JIT_CTX_CONSTANTS = 0,

   LP_JIT_CTX_NUM_CONSTANTS,

   LP_JIT_CTX_ALPHA_REF,

   LP_JIT_CTX_STENCIL_REF_FRONT,

   LP_JIT_CTX_STENCIL_REF_BACK,

   LP_JIT_CTX_U8_BLEND_COLOR,

   LP_JIT_CTX_F_BLEND_COLOR,

   LP_JIT_CTX_VIEWPORTS,

   LP_JIT_CTX_TEXTURES,

   LP_JIT_CTX_SAMPLERS,

   LP_JIT_CTX_COUNT

};

#define lp_jit_context_constants(_gallivm, _ptr) \

   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_CONSTANTS, "constants")

#define lp_jit_context_num_constants(_gallivm, _ptr) \

   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_NUM_CONSTANTS, "num_constants")

#define lp_jit_context_alpha_ref_value(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")

#define lp_jit_context_stencil_ref_front_value(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")

#define lp_jit_context_stencil_ref_back_value(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")

#define lp_jit_context_u8_blend_color(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_U8_BLEND_COLOR, "u8_blend_color")

#define lp_jit_context_f_blend_color(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_F_BLEND_COLOR, "f_blend_color")

#define lp_jit_context_viewports(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, LP_JIT_CTX_VIEWPORTS, "viewports")

#define lp_jit_context_textures(_gallivm, _ptr) \

   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_TEXTURES, "textures")

#define lp_jit_context_samplers(_gallivm, _ptr) \

   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_CTX_SAMPLERS, "samplers")

struct lp_jit_thread_data

{

   uint64_t vis_counter;

   /*

    * Non-interpolated rasterizer state passed through to the fragment shader.

    */

   struct {

      uint32_t viewport_index;

   } raster_state;

};

enum {

   LP_JIT_THREAD_DATA_COUNTER = 0,

   LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX,

   LP_JIT_THREAD_DATA_COUNT

};

#define lp_jit_thread_data_counter(_gallivm, _ptr) \

   lp_build_struct_get_ptr(_gallivm, _ptr, LP_JIT_THREAD_DATA_COUNTER, "counter")

#define lp_jit_thread_data_raster_state_viewport_index(_gallivm, _ptr) \

   lp_build_struct_get(_gallivm, _ptr, \

                       LP_JIT_THREAD_DATA_RASTER_STATE_VIEWPORT_INDEX, \

                       "raster_state.viewport_index")

/**

 * typedef for fragment shader function

 *

 * @param context       jit context

 * @param x             block start x

 * @param y             block start y

 * @param facing        is front facing

 * @param a0            shader input a0

 * @param dadx          shader input dadx

 * @param dady          shader input dady

 * @param color         color buffer

 * @param depth         depth buffer

 * @param mask          mask of visible pixels in block

 * @param thread_data   task thread data

 * @param stride        color buffer row stride in bytes

 * @param depth_stride  depth buffer row stride in bytes

 */

typedef void

(*lp_jit_frag_func)(const struct lp_jit_context *context,

                    uint32_t x,

                    uint32_t y,

                    uint32_t facing,

                    const void *a0,

                    const void *dadx,

                    const void *dady,

                    uint8_t **color,

                    uint8_t *depth,

                    uint32_t mask,

                    struct lp_jit_thread_data *thread_data,

                    unsigned *stride,

                    unsigned depth_stride);

void

lp_jit_screen_cleanup(struct llvmpipe_screen *screen);

boolean

lp_jit_screen_init(struct llvmpipe_screen *screen);

void

lp_jit_init_types(struct lp_fragment_shader_variant *lp);

#endif /* LP_JIT_H */