1 /* 2 * Mesa 3-D graphics library ATI Fragment Shader 3 * 4 * Copyright (C) 2004 David Airlie All Rights Reserved. 5 * 6 */ 7 8 #ifndef ATIFRAGSHADER_H 9 #define ATIFRAGSHADER_H 10 11 #include "glheader.h" 12 13 14 struct gl_context; 15 16 #define MAX_NUM_INSTRUCTIONS_PER_PASS_ATI 8 17 #define MAX_NUM_PASSES_ATI 2 18 #define MAX_NUM_FRAGMENT_REGISTERS_ATI 6 19 #define MAX_NUM_FRAGMENT_CONSTANTS_ATI 8 20 21 struct ati_fs_opcode_st 22 { 23 GLenum opcode; 24 GLint num_src_args; 25 }; 26 27 struct atifragshader_src_register 28 { 29 GLuint Index; 30 GLuint argRep; 31 GLuint argMod; 32 }; 33 34 struct atifragshader_dst_register 35 { 36 GLuint Index; 37 GLuint dstMod; 38 GLuint dstMask; 39 }; 40 41 #define ATI_FRAGMENT_SHADER_COLOR_OP 0 42 #define ATI_FRAGMENT_SHADER_ALPHA_OP 1 43 #define ATI_FRAGMENT_SHADER_PASS_OP 2 44 #define ATI_FRAGMENT_SHADER_SAMPLE_OP 3 45 46 /* two opcodes - one for color/one for alpha */ 47 /* up to three source registers for most ops */ 48 struct atifs_instruction 49 { 50 GLenum Opcode[2]; 51 GLuint ArgCount[2]; 52 struct atifragshader_src_register SrcReg[2][3]; 53 struct atifragshader_dst_register DstReg[2]; 54 }; 55 56 /* different from arithmetic shader instruction */ 57 struct atifs_setupinst 58 { 59 GLenum Opcode; 60 GLuint src; 61 GLenum swizzle; 62 }; 63 64 65 extern struct ati_fragment_shader * 66 _mesa_new_ati_fragment_shader(struct gl_context *ctx, GLuint id); 67 68 extern void 69 _mesa_delete_ati_fragment_shader(struct gl_context *ctx, 70 struct ati_fragment_shader *s); 71 72 #endif /* ATIFRAGSHADER_H */ 73