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+/*
+ * Mesa 3-D graphics library
+ * Version: 5.1
+ *
+ * Copyright (C) 1999-2003 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
+ * BRIAN PAUL 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.
+ */
+
+/**
+ * \file program.c
+ * Vertex and fragment program support functions.
+ * \author Brian Paul
+ */
+
+
+#ifndef PROGRAM_H
+#define PROGRAM_H
+
+#include "mtypes.h"
+
+
+/* for GL_ARB_v_p and GL_ARB_f_p SWZ instruction */
+#define SWIZZLE_X 0
+#define SWIZZLE_Y 1
+#define SWIZZLE_Z 2
+#define SWIZZLE_W 3
+#define SWIZZLE_ZERO 4 /* keep these values together: KW */
+#define SWIZZLE_ONE 5 /* keep these values together: KW */
+
+
+/*
+ * Internal functions
+ */
+
+extern void
+_mesa_init_program(GLcontext *ctx);
+
+extern void
+_mesa_set_program_error(GLcontext *ctx, GLint pos, const char *string);
+
+extern const GLubyte *
+_mesa_find_line_column(const GLubyte *string, const GLubyte *pos,
+ GLint *line, GLint *col);
+
+
+extern struct program *
+_mesa_init_vertex_program( GLcontext *ctx,
+ struct vertex_program *prog,
+ GLenum target,
+ GLuint id );
+
+extern struct program *
+_mesa_init_fragment_program( GLcontext *ctx,
+ struct fragment_program *prog,
+ GLenum target,
+ GLuint id );
+
+extern struct program *
+_mesa_new_program(GLcontext *ctx, GLenum target, GLuint id);
+
+extern void
+_mesa_delete_program(GLcontext *ctx, struct program *prog);
+
+
+
+/*
+ * 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 ].
+ */
+enum state_index {
+ STATE_MATERIAL,
+
+ STATE_LIGHT,
+ STATE_LIGHTMODEL_AMBIENT,
+ STATE_LIGHTMODEL_SCENECOLOR,
+ STATE_LIGHTPROD,
+
+ STATE_TEXGEN,
+
+ STATE_FOG_COLOR,
+ STATE_FOG_PARAMS,
+
+ STATE_CLIPPLANE,
+
+ STATE_POINT_SIZE,
+ STATE_POINT_ATTENUATION,
+
+ STATE_MATRIX,
+ STATE_MODELVIEW,
+ STATE_PROJECTION,
+ STATE_MVP,
+ STATE_TEXTURE,
+ STATE_PROGRAM,
+ STATE_MATRIX_INVERSE,
+ STATE_MATRIX_TRANSPOSE,
+ STATE_MATRIX_INVTRANS,
+
+ STATE_AMBIENT,
+ STATE_DIFFUSE,
+ STATE_SPECULAR,
+ STATE_EMISSION,
+ STATE_SHININESS,
+ STATE_HALF,
+
+ STATE_POSITION,
+ STATE_ATTENUATION,
+ STATE_SPOT_DIRECTION,
+
+ 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,
+
+ STATE_TEXENV_COLOR,
+
+ STATE_DEPTH_RANGE,
+
+ STATE_VERTEX_PROGRAM,
+ STATE_FRAGMENT_PROGRAM,
+
+ STATE_ENV,
+ STATE_LOCAL
+};
+
+
+
+/*
+ * Named program parameters
+ * Used for NV_fragment_program "DEFINE"d constants and "DECLARE"d parameters,
+ * and ARB_fragment_program global state references. For the later, Name
+ * might be "state.light[0].diffuse", for example.
+ */
+
+enum parameter_type
+{
+ NAMED_PARAMETER,
+ CONSTANT,
+ STATE
+};
+
+
+struct program_parameter
+{
+ const char *Name; /* Null-terminated */
+ enum parameter_type Type;
+ enum state_index StateIndexes[6]; /* Global state reference */
+ GLfloat Values[4];
+};
+
+
+struct program_parameter_list
+{
+ GLuint NumParameters;
+ struct program_parameter *Parameters;
+};
+
+
+/*
+ * Program parameter functions
+ */
+
+extern struct program_parameter_list *
+_mesa_new_parameter_list(void);
+
+extern void
+_mesa_free_parameter_list(struct program_parameter_list *paramList);
+
+extern void
+_mesa_free_parameters(struct program_parameter_list *paramList);
+
+extern GLint
+_mesa_add_named_parameter(struct program_parameter_list *paramList,
+ const char *name, const GLfloat values[4]);
+
+extern GLint
+_mesa_add_named_constant(struct program_parameter_list *paramList,
+ const char *name, const GLfloat values[4]);
+
+extern GLint
+_mesa_add_unnamed_constant(struct program_parameter_list *paramList,
+ const GLfloat values[4]);
+
+extern GLint
+_mesa_add_state_reference(struct program_parameter_list *paramList,
+ GLint *stateTokens);
+
+extern GLfloat *
+_mesa_lookup_parameter_value(struct program_parameter_list *paramList,
+ GLsizei nameLen, const char *name);
+
+extern GLint
+_mesa_lookup_parameter_index(struct program_parameter_list *paramList,
+ GLsizei nameLen, const char *name);
+
+extern void
+_mesa_load_state_parameters(GLcontext *ctx,
+ struct program_parameter_list *paramList);
+
+
+/*
+ * API functions
+ */
+
+extern void GLAPIENTRY
+_mesa_BindProgram(GLenum target, GLuint id);
+
+extern void GLAPIENTRY
+_mesa_DeletePrograms(GLsizei n, const GLuint *ids);
+
+extern void GLAPIENTRY
+_mesa_GenPrograms(GLsizei n, GLuint *ids);
+
+extern GLboolean GLAPIENTRY
+_mesa_IsProgram(GLuint id);
+
+
+
+/*
+ * GL_MESA_program_debug
+ */
+
+extern void
+_mesa_ProgramCallbackMESA(GLenum target, GLprogramcallbackMESA callback,
+ GLvoid *data);
+
+extern void
+_mesa_GetProgramRegisterfvMESA(GLenum target, GLsizei len,
+ const GLubyte *registerName, GLfloat *v);
+
+
+#endif /* PROGRAM_H */