209 lines
6.8 KiB
C
209 lines
6.8 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef PROG_STATEVARS_H
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#define PROG_STATEVARS_H
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#include "main/glheader.h"
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#include "compiler/shader_enums.h"
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct gl_context;
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struct gl_constants;
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struct gl_program_parameter_list;
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/**
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* Used for describing GL state referenced from inside ARB vertex and
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* fragment programs.
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* A string such as "state.light[0].ambient" gets translated into a
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* sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ].
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*
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* For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should
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* always be the array index.
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*/
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typedef enum gl_state_index_ {
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STATE_NOT_STATE_VAR = 0,
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STATE_MATERIAL,
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STATE_LIGHT, /* One gl_light attribute. */
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STATE_LIGHT_ARRAY, /* Multiple gl_light attributes loaded at once. */
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STATE_LIGHT_ATTENUATION_ARRAY,
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STATE_LIGHTMODEL_AMBIENT,
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STATE_LIGHTMODEL_SCENECOLOR,
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STATE_LIGHTPROD,
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STATE_LIGHTPROD_ARRAY_FRONT, /* multiple lights, only front faces */
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STATE_LIGHTPROD_ARRAY_BACK, /* multiple lights, only back faces */
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STATE_LIGHTPROD_ARRAY_TWOSIDE, /* multiple lights, both sides */
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STATE_TEXGEN,
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STATE_TEXENV_COLOR,
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STATE_FOG_COLOR,
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STATE_FOG_PARAMS,
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STATE_CLIPPLANE,
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STATE_POINT_SIZE,
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STATE_POINT_ATTENUATION,
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STATE_MODELVIEW_MATRIX,
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STATE_MODELVIEW_MATRIX_INVERSE,
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STATE_MODELVIEW_MATRIX_TRANSPOSE,
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STATE_MODELVIEW_MATRIX_INVTRANS,
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STATE_PROJECTION_MATRIX,
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STATE_PROJECTION_MATRIX_INVERSE,
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STATE_PROJECTION_MATRIX_TRANSPOSE,
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STATE_PROJECTION_MATRIX_INVTRANS,
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STATE_MVP_MATRIX,
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STATE_MVP_MATRIX_INVERSE,
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STATE_MVP_MATRIX_TRANSPOSE,
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STATE_MVP_MATRIX_INVTRANS,
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STATE_TEXTURE_MATRIX,
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STATE_TEXTURE_MATRIX_INVERSE,
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STATE_TEXTURE_MATRIX_TRANSPOSE,
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STATE_TEXTURE_MATRIX_INVTRANS,
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STATE_PROGRAM_MATRIX,
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STATE_PROGRAM_MATRIX_INVERSE,
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STATE_PROGRAM_MATRIX_TRANSPOSE,
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STATE_PROGRAM_MATRIX_INVTRANS,
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STATE_NUM_SAMPLES, /* An integer, not a float like the other state vars */
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STATE_DEPTH_RANGE,
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STATE_FRAGMENT_PROGRAM_ENV,
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STATE_FRAGMENT_PROGRAM_ENV_ARRAY,
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STATE_FRAGMENT_PROGRAM_LOCAL,
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STATE_FRAGMENT_PROGRAM_LOCAL_ARRAY,
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STATE_VERTEX_PROGRAM_ENV,
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STATE_VERTEX_PROGRAM_ENV_ARRAY,
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STATE_VERTEX_PROGRAM_LOCAL,
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STATE_VERTEX_PROGRAM_LOCAL_ARRAY,
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STATE_NORMAL_SCALE_EYESPACE,
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STATE_CURRENT_ATTRIB, /* ctx->Current vertex attrib value */
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STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED, /* ctx->Current vertex attrib value after passthrough vertex processing */
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STATE_NORMAL_SCALE,
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STATE_FOG_PARAMS_OPTIMIZED, /* for faster fog calc */
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STATE_POINT_SIZE_CLAMPED, /* includes implementation dependent size clamp */
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STATE_LIGHT_SPOT_DIR_NORMALIZED, /* pre-normalized spot dir */
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STATE_LIGHT_POSITION, /* object vs eye space */
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STATE_LIGHT_POSITION_ARRAY,
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STATE_LIGHT_POSITION_NORMALIZED, /* object vs eye space */
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STATE_LIGHT_POSITION_NORMALIZED_ARRAY,
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STATE_LIGHT_HALF_VECTOR, /* object vs eye space */
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STATE_PT_SCALE, /**< Pixel transfer RGBA scale */
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STATE_PT_BIAS, /**< Pixel transfer RGBA bias */
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STATE_FB_SIZE, /**< (width-1, height-1, 0, 0) */
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STATE_FB_WPOS_Y_TRANSFORM, /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */
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STATE_FB_PNTC_Y_TRANSFORM, /**< (1, 0, 0, 0) if point origin is upper left, (-1, 1, 0, 0) otherwise */
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STATE_TCS_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TCS (integer) */
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STATE_TES_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TES (integer) */
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/**
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* A single enum gl_blend_support_qualifier value representing the
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* currently active advanced blending equation, or zero if disabled.
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*/
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STATE_ADVANCED_BLENDING_MODE,
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STATE_ALPHA_REF, /* alpha-test reference value */
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STATE_CLIP_INTERNAL, /* similar to STATE_CLIPPLANE, but in clip-space */
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STATE_ATOMIC_COUNTER_OFFSET, /* the byte offset to add to atomic counter bindings */
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STATE_INTERNAL_DRIVER, /* first available state index for drivers (must be last) */
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/** All enums below don't occur in state[0]. **/
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/* These 8 enums must be in the same order as the gl_light union members,
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* which should also match the order of gl_LightSource members.
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*/
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STATE_AMBIENT,
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STATE_DIFFUSE,
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STATE_SPECULAR,
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STATE_POSITION, /**< xyzw = position */
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STATE_HALF_VECTOR,
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STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */
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STATE_ATTENUATION, /**< xyz = attenuation, w = spot exponent */
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STATE_SPOT_CUTOFF, /**< x = cutoff, yzw = undefined */
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STATE_EMISSION,
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STATE_SHININESS,
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/* These 8 enums must be in the same order as the memory layout of
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* gl_fixedfunc_texture_unit::EyePlane/ObjectPlane.
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*/
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STATE_TEXGEN_EYE_S,
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STATE_TEXGEN_EYE_T,
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STATE_TEXGEN_EYE_R,
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STATE_TEXGEN_EYE_Q,
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STATE_TEXGEN_OBJECT_S,
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STATE_TEXGEN_OBJECT_T,
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STATE_TEXGEN_OBJECT_R,
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STATE_TEXGEN_OBJECT_Q,
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} gl_state_index;
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extern void
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_mesa_load_state_parameters(struct gl_context *ctx,
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struct gl_program_parameter_list *paramList);
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extern void
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_mesa_upload_state_parameters(struct gl_context *ctx,
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struct gl_program_parameter_list *paramList,
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uint32_t *dst);
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extern void
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_mesa_optimize_state_parameters(struct gl_constants *consts,
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struct gl_program_parameter_list *list);
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extern unsigned
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_mesa_program_state_value_size(const gl_state_index16 state[STATE_LENGTH]);
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extern GLbitfield
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_mesa_program_state_flags(const gl_state_index16 state[STATE_LENGTH]);
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extern char *
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_mesa_program_state_string(const gl_state_index16 state[STATE_LENGTH]);
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#ifdef __cplusplus
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}
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#endif
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#endif /* PROG_STATEVARS_H */
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