/* * Mesa 3-D graphics library * * Copyright (C) 1999-2007 Brian Paul 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, 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 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. */ #ifndef PROG_STATEVARS_H #define PROG_STATEVARS_H #include "main/glheader.h" #include "compiler/shader_enums.h" #include #ifdef __cplusplus extern "C" { #endif struct gl_context; struct gl_constants; struct gl_program_parameter_list; /** * Used for describing GL state referenced from inside ARB vertex and * fragment programs. * A string such as "state.light[0].ambient" gets translated into a * sequence of tokens such as [ STATE_LIGHT, 0, STATE_AMBIENT ]. * * For state that's an array, like STATE_CLIPPLANE, the 2nd token [1] should * always be the array index. */ typedef enum gl_state_index_ { STATE_NOT_STATE_VAR = 0, STATE_MATERIAL, STATE_LIGHT, /* One gl_light attribute. */ STATE_LIGHT_ARRAY, /* Multiple gl_light attributes loaded at once. */ STATE_LIGHT_ATTENUATION_ARRAY, STATE_LIGHTMODEL_AMBIENT, STATE_LIGHTMODEL_SCENECOLOR, STATE_LIGHTPROD, STATE_LIGHTPROD_ARRAY_FRONT, /* multiple lights, only front faces */ STATE_LIGHTPROD_ARRAY_BACK, /* multiple lights, only back faces */ STATE_LIGHTPROD_ARRAY_TWOSIDE, /* multiple lights, both sides */ STATE_TEXGEN, STATE_TEXENV_COLOR, STATE_FOG_COLOR, STATE_FOG_PARAMS, STATE_CLIPPLANE, STATE_POINT_SIZE, STATE_POINT_ATTENUATION, STATE_MODELVIEW_MATRIX, STATE_MODELVIEW_MATRIX_INVERSE, STATE_MODELVIEW_MATRIX_TRANSPOSE, STATE_MODELVIEW_MATRIX_INVTRANS, STATE_PROJECTION_MATRIX, STATE_PROJECTION_MATRIX_INVERSE, STATE_PROJECTION_MATRIX_TRANSPOSE, STATE_PROJECTION_MATRIX_INVTRANS, STATE_MVP_MATRIX, STATE_MVP_MATRIX_INVERSE, STATE_MVP_MATRIX_TRANSPOSE, STATE_MVP_MATRIX_INVTRANS, STATE_TEXTURE_MATRIX, STATE_TEXTURE_MATRIX_INVERSE, STATE_TEXTURE_MATRIX_TRANSPOSE, STATE_TEXTURE_MATRIX_INVTRANS, STATE_PROGRAM_MATRIX, STATE_PROGRAM_MATRIX_INVERSE, STATE_PROGRAM_MATRIX_TRANSPOSE, STATE_PROGRAM_MATRIX_INVTRANS, STATE_NUM_SAMPLES, /* An integer, not a float like the other state vars */ STATE_DEPTH_RANGE, STATE_FRAGMENT_PROGRAM_ENV, STATE_FRAGMENT_PROGRAM_ENV_ARRAY, STATE_FRAGMENT_PROGRAM_LOCAL, STATE_FRAGMENT_PROGRAM_LOCAL_ARRAY, STATE_VERTEX_PROGRAM_ENV, STATE_VERTEX_PROGRAM_ENV_ARRAY, STATE_VERTEX_PROGRAM_LOCAL, STATE_VERTEX_PROGRAM_LOCAL_ARRAY, STATE_NORMAL_SCALE_EYESPACE, STATE_CURRENT_ATTRIB, /* ctx->Current vertex attrib value */ STATE_CURRENT_ATTRIB_MAYBE_VP_CLAMPED, /* ctx->Current vertex attrib value after passthrough vertex processing */ STATE_NORMAL_SCALE, STATE_FOG_PARAMS_OPTIMIZED, /* for faster fog calc */ STATE_POINT_SIZE_CLAMPED, /* includes implementation dependent size clamp */ STATE_LIGHT_SPOT_DIR_NORMALIZED, /* pre-normalized spot dir */ STATE_LIGHT_POSITION, /* object vs eye space */ STATE_LIGHT_POSITION_ARRAY, STATE_LIGHT_POSITION_NORMALIZED, /* object vs eye space */ STATE_LIGHT_POSITION_NORMALIZED_ARRAY, STATE_LIGHT_HALF_VECTOR, /* object vs eye space */ STATE_PT_SCALE, /**< Pixel transfer RGBA scale */ STATE_PT_BIAS, /**< Pixel transfer RGBA bias */ STATE_FB_SIZE, /**< (width-1, height-1, 0, 0) */ STATE_FB_WPOS_Y_TRANSFORM, /**< (1, 0, -1, height) if a FBO is bound, (-1, height, 1, 0) otherwise */ STATE_FB_PNTC_Y_TRANSFORM, /**< (1, 0, 0, 0) if point origin is upper left, (-1, 1, 0, 0) otherwise */ STATE_TCS_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TCS (integer) */ STATE_TES_PATCH_VERTICES_IN, /**< gl_PatchVerticesIn for TES (integer) */ /** * A single enum gl_blend_support_qualifier value representing the * currently active advanced blending equation, or zero if disabled. */ STATE_ADVANCED_BLENDING_MODE, STATE_ALPHA_REF, /* alpha-test reference value */ STATE_CLIP_INTERNAL, /* similar to STATE_CLIPPLANE, but in clip-space */ STATE_INTERNAL_DRIVER, /* first available state index for drivers (must be last) */ /** All enums below don't occur in state[0]. **/ /* These 8 enums must be in the same order as the gl_light union members, * which should also match the order of gl_LightSource members. */ STATE_AMBIENT, STATE_DIFFUSE, STATE_SPECULAR, STATE_POSITION, /**< xyzw = position */ STATE_HALF_VECTOR, STATE_SPOT_DIRECTION, /**< xyz = direction, w = cos(cutoff) */ STATE_ATTENUATION, /**< xyz = attenuation, w = spot exponent */ STATE_SPOT_CUTOFF, /**< x = cutoff, yzw = undefined */ STATE_EMISSION, STATE_SHININESS, /* These 8 enums must be in the same order as the memory layout of * gl_fixedfunc_texture_unit::EyePlane/ObjectPlane. */ STATE_TEXGEN_EYE_S, STATE_TEXGEN_EYE_T, STATE_TEXGEN_EYE_R, STATE_TEXGEN_EYE_Q, STATE_TEXGEN_OBJECT_S, STATE_TEXGEN_OBJECT_T, STATE_TEXGEN_OBJECT_R, STATE_TEXGEN_OBJECT_Q, } gl_state_index; extern void _mesa_load_state_parameters(struct gl_context *ctx, struct gl_program_parameter_list *paramList); extern void _mesa_upload_state_parameters(struct gl_context *ctx, struct gl_program_parameter_list *paramList, uint32_t *dst); extern void _mesa_optimize_state_parameters(struct gl_constants *consts, struct gl_program_parameter_list *list); extern unsigned _mesa_program_state_value_size(const gl_state_index16 state[STATE_LENGTH]); extern GLbitfield _mesa_program_state_flags(const gl_state_index16 state[STATE_LENGTH]); extern char * _mesa_program_state_string(const gl_state_index16 state[STATE_LENGTH]); #ifdef __cplusplus } #endif #endif /* PROG_STATEVARS_H */