src/gallium/drivers/llvmpipe/lp_jit.h

   1 /**************************************************************************
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   3  * Copyright 2009 VMware, Inc.
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  16  * of the Software.
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  27
  28 /**
  29  * @file
  30  * C - JIT interfaces
  31  *
  32  * @author Jose Fonseca <jfonseca@vmware.com>
  33  */
  34
  35 #ifndef LP_JIT_H
  36 #define LP_JIT_H
  37
  38
  39 #include "gallivm/lp_bld_struct.h"
  40
  41 #include "pipe/p_state.h"
  42 #include "lp_texture.h"
  43
  44
  45 struct llvmpipe_screen;
  46
  47
  48 struct lp_jit_texture
  49 {
  50    uint32_t width;
  51    uint32_t height;
  52    uint32_t depth;
  53    uint32_t last_level;
  54    uint32_t row_stride[LP_MAX_TEXTURE_2D_LEVELS];
  55    const void *data[LP_MAX_TEXTURE_2D_LEVELS];
  56 };
  57
  58
  59 enum {
  60    LP_JIT_TEXTURE_WIDTH = 0,
  61    LP_JIT_TEXTURE_HEIGHT,
  62    LP_JIT_TEXTURE_DEPTH,
  63    LP_JIT_TEXTURE_LAST_LEVEL,
  64    LP_JIT_TEXTURE_ROW_STRIDE,
  65    LP_JIT_TEXTURE_DATA
  66 };
  67
  68
  69
  70 /**
  71  * This structure is passed directly to the generated fragment shader.
  72  *
  73  * It contains the derived state.
  74  *
  75  * Changes here must be reflected in the lp_jit_context_* macros and
  76  * lp_jit_init_types function. Changes to the ordering should be avoided.
  77  *
  78  * Only use types with a clear size and padding here, in particular prefer the
  79  * stdint.h types to the basic integer types.
  80  */
  81 struct lp_jit_context
  82 {
  83    const float *constants;
  84
  85    float alpha_ref_value;
  86
  87    uint32_t stencil_ref_front, stencil_ref_back;
  88
  89    /** floats, not ints */
  90    float scissor_xmin, scissor_ymin, scissor_xmax, scissor_ymax;
  91
  92    /* FIXME: store (also?) in floats */
  93    uint8_t *blend_color;
  94
  95    struct lp_jit_texture textures[PIPE_MAX_SAMPLERS];
  96 };
  97
  98
  99 /**
 100  * These enum values must match the position of the fields in the
 101  * lp_jit_context struct above.
 102  */
 103 enum {
 104    LP_JIT_CTX_CONSTANTS = 0,
 105    LP_JIT_CTX_ALPHA_REF,
 106    LP_JIT_CTX_STENCIL_REF_FRONT,
 107    LP_JIT_CTX_STENCIL_REF_BACK,
 108    LP_JIT_CTX_SCISSOR_XMIN,
 109    LP_JIT_CTX_SCISSOR_YMIN,
 110    LP_JIT_CTX_SCISSOR_XMAX,
 111    LP_JIT_CTX_SCISSOR_YMAX,
 112    LP_JIT_CTX_BLEND_COLOR,
 113    LP_JIT_CTX_TEXTURES,
 114    LP_JIT_CTX_COUNT
 115 };
 116
 117
 118 #define lp_jit_context_constants(_builder, _ptr) \
 119    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_CONSTANTS, "constants")
 120
 121 #define lp_jit_context_alpha_ref_value(_builder, _ptr) \
 122    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_ALPHA_REF, "alpha_ref_value")
 123
 124 #define lp_jit_context_stencil_ref_front_value(_builder, _ptr) \
 125    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_FRONT, "stencil_ref_front")
 126
 127 #define lp_jit_context_stencil_ref_back_value(_builder, _ptr) \
 128    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_STENCIL_REF_BACK, "stencil_ref_back")
 129
 130 #define lp_jit_context_scissor_xmin_value(_builder, _ptr) \
 131    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_XMIN, "scissor_xmin")
 132
 133 #define lp_jit_context_scissor_ymin_value(_builder, _ptr) \
 134    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_YMIN, "scissor_ymin")
 135
 136 #define lp_jit_context_scissor_xmax_value(_builder, _ptr) \
 137    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_XMAX, "scissor_xmax")
 138
 139 #define lp_jit_context_scissor_ymax_value(_builder, _ptr) \
 140    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_SCISSOR_YMAX, "scissor_ymax")
 141
 142 #define lp_jit_context_blend_color(_builder, _ptr) \
 143    lp_build_struct_get(_builder, _ptr, LP_JIT_CTX_BLEND_COLOR, "blend_color")
 144
 145 #define lp_jit_context_textures(_builder, _ptr) \
 146    lp_build_struct_get_ptr(_builder, _ptr, LP_JIT_CONTEXT_TEXTURES, "textures")
 147
 148
 149 /** Indexes into jit_function[] array */
 150 #define RAST_WHOLE 0
 151 #define RAST_EDGE_TEST 1
 152
 153
 154 typedef void
 155 (*lp_jit_frag_func)(const struct lp_jit_context *context,
 156                     uint32_t x,
 157                     uint32_t y,
 158                     float facing,
 159                     const void *a0,
 160                     const void *dadx,
 161                     const void *dady,
 162                     uint8_t **color,
 163                     void *depth,
 164                     const int32_t c1,
 165                     const int32_t c2,
 166                     const int32_t c3,
 167                     const int32_t *step1,
 168                     const int32_t *step2,
 169                     const int32_t *step3);
 170
 171
 172 void
 173 lp_jit_screen_cleanup(struct llvmpipe_screen *screen);
 174
 175
 176 void
 177 lp_jit_screen_init(struct llvmpipe_screen *screen);
 178
 179
 180 #endif /* LP_JIT_H */