1 /* 2 * Mesa 3-D graphics library 3 * 4 * Copyright (C) 1999-2007 Brian Paul All Rights Reserved. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included 14 * in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 25 #ifndef PROG_EXECUTE_H 26 #define PROG_EXECUTE_H 27 28 #include "main/config.h" 29 #include "main/mtypes.h" 30 31 32 typedef void (*FetchTexelLodFunc)(struct gl_context *ctx, const GLfloat texcoord[4], 33 GLfloat lambda, GLuint unit, GLfloat color[4]); 34 35 typedef void (*FetchTexelDerivFunc)(struct gl_context *ctx, const GLfloat texcoord[4], 36 const GLfloat texdx[4], 37 const GLfloat texdy[4], 38 GLfloat lodBias, 39 GLuint unit, GLfloat color[4]); 40 41 42 /** NOTE: This must match SWRAST_MAX_WIDTH */ 43 #define PROG_MAX_WIDTH 16384 44 45 46 /** 47 * Virtual machine state used during execution of vertex/fragment programs. 48 */ 49 struct gl_program_machine 50 { 51 const struct gl_program *CurProgram; 52 53 /** Fragment Input attributes */ 54 GLfloat (*Attribs)[PROG_MAX_WIDTH][4]; 55 GLfloat (*DerivX)[4]; 56 GLfloat (*DerivY)[4]; 57 GLuint NumDeriv; /**< Max index into DerivX/Y arrays */ 58 GLuint CurElement; /**< Index into Attribs arrays */ 59 60 /** Vertex Input attribs */ 61 GLfloat VertAttribs[VERT_ATTRIB_MAX][4]; 62 63 GLfloat Temporaries[MAX_PROGRAM_TEMPS][4]; 64 GLfloat Outputs[MAX_PROGRAM_OUTPUTS][4]; 65 GLfloat (*EnvParams)[4]; /**< Vertex or Fragment env parameters */ 66 GLint AddressReg[MAX_PROGRAM_ADDRESS_REGS][4]; 67 GLfloat SystemValues[SYSTEM_VALUE_MAX][4]; 68 69 const GLubyte *Samplers; /** Array mapping sampler var to tex unit */ 70 71 GLuint CallStack[MAX_PROGRAM_CALL_DEPTH]; /**< For CAL/RET instructions */ 72 GLuint StackDepth; /**< Index/ptr to top of CallStack[] */ 73 74 /** Texture fetch functions */ 75 FetchTexelLodFunc FetchTexelLod; 76 FetchTexelDerivFunc FetchTexelDeriv; 77 }; 78 79 80 extern GLboolean 81 _mesa_execute_program(struct gl_context *ctx, 82 const struct gl_program *program, 83 struct gl_program_machine *machine); 84 85 86 #endif /* PROG_EXECUTE_H */ 87
