include/state/cr_limits.h

/* Copyright (c) 2001, Stanford University
 * All rights reserved.
 *
 * See the file LICENSE.txt for information on redistributing this software.
 */

#ifndef CR_LIMITS_H
#define CR_LIMITS_H

#include "chromium.h"
#include "cr_version.h"

#include <iprt/cdefs.h>

#ifdef __cplusplus
extern "C" {
#endif


/* glGetString strings */
#define CR_RENDERER "Chromium"
#define CR_VENDOR "Humper"


#define CR_MAX_TEXTURE_UNITS        8
#define CR_MAX_GENERAL_COMBINERS    8
#define CR_MAX_TEXTURE_SIZE     8192
#define CR_MAX_3D_TEXTURE_SIZE      512
#define CR_MAX_CUBE_TEXTURE_SIZE    4096
#define CR_MAX_RECTANGLE_TEXTURE_SIZE   4096
#define CR_MAX_TEXTURE_ANISOTROPY   8.0
#define CR_MAX_LIGHTS           8
#define CR_MAX_CLIP_PLANES      8
#define CR_MAX_PROJECTION_STACK_DEPTH   32
#define CR_MAX_MODELVIEW_STACK_DEPTH    32
#define CR_MAX_TEXTURE_STACK_DEPTH  10
#define CR_MAX_COLOR_STACK_DEPTH    2
#define CR_MAX_ATTRIB_STACK_DEPTH   16
#define CR_MAX_CLIENT_ATTRIB_STACK_DEPTH    16
#define CR_MAX_NAME_STACK_DEPTH     64
#define CR_MAX_ELEMENTS_INDICES     16384
#define CR_MAX_ELEMENTS_VERTICES    16384
#define CR_MAX_EVAL_ORDER       8
#define CR_MAX_LIST_NESTING     64
#define CR_MAX_PIXEL_MAP_TABLE      256
#define CR_MAX_VIEWPORT_DIM     16384
#define CR_SUBPIXEL_BITS        8
#define CR_ALIASED_POINT_SIZE_MIN   1.0
#define CR_ALIASED_POINT_SIZE_MAX   64.0
#define CR_SMOOTH_POINT_SIZE_MIN    1.0
#define CR_SMOOTH_POINT_SIZE_MAX    64.0
#define CR_POINT_SIZE_GRANULARITY   0.5
#define CR_ALIASED_LINE_WIDTH_MIN   1.0
#define CR_ALIASED_LINE_WIDTH_MAX   64.0
#define CR_SMOOTH_LINE_WIDTH_MIN    1.0
#define CR_SMOOTH_LINE_WIDTH_MAX    64.0
#define CR_LINE_WIDTH_GRANULARITY   0.5
#define CR_MAX_VERTEX_ATTRIBS           16
#define CR_MAX_TEXTURE_LOD_BIAS         8.0
#ifdef CR_NV_fragment_program
#define CR_MAX_TEXTURE_COORDS           2
#define CR_MAX_TEXTURE_IMAGE_UNITS      2
#define CR_MAX_FRAGMENT_LOCAL_PARAMS    64
#endif
#ifdef CR_NV_vertex_program
#define CR_MAX_PROGRAM_MATRICES           8
#define CR_MAX_PROGRAM_MATRIX_STACK_DEPTH 4
#endif
#ifdef CR_ARB_fragment_program
#define CR_MAX_FRAGMENT_PROGRAM_INSTRUCTIONS       72
#define CR_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMS       24
#define CR_MAX_FRAGMENT_PROGRAM_ENV_PARAMS         256
#define CR_MAX_FRAGMENT_PROGRAM_TEMPS              16
#define CR_MAX_FRAGMENT_PROGRAM_ATTRIBS            10
#define CR_MAX_FRAGMENT_PROGRAM_ADDRESS_REGS        1
#define CR_MAX_FRAGMENT_PROGRAM_ALU_INSTRUCTIONS   48
#define CR_MAX_FRAGMENT_PROGRAM_TEX_INSTRUCTIONS   24
#define CR_MAX_FRAGMENT_PROGRAM_TEX_INDIRECTIONS    4
#endif
#ifdef CR_ARB_vertex_program
#define CR_MAX_VERTEX_PROGRAM_INSTRUCTIONS 128
#define CR_MAX_VERTEX_PROGRAM_LOCAL_PARAMS  96
#define CR_MAX_VERTEX_PROGRAM_ENV_PARAMS   256 /* for GL_NV_vertex_program2 */
#define CR_MAX_VERTEX_PROGRAM_TEMPS         12
#define CR_MAX_VERTEX_PROGRAM_ATTRIBS       16
#define CR_MAX_VERTEX_PROGRAM_ADDRESS_REGS   1
#endif

#if defined(CR_ARB_vertex_program) || defined(CR_ARB_fragment_program)
/* These must be the max of the fragment and vertex program limits */
#define CR_MAX_PROGRAM_LOCAL_PARAMS  (CR_MAX_VERTEX_PROGRAM_LOCAL_PARAMS > CR_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMS ? CR_MAX_VERTEX_PROGRAM_LOCAL_PARAMS : CR_MAX_FRAGMENT_PROGRAM_LOCAL_PARAMS)

#define CR_MAX_PROGRAM_ENV_PARAMS  (CR_MAX_VERTEX_PROGRAM_ENV_PARAMS > CR_MAX_FRAGMENT_PROGRAM_ENV_PARAMS ? CR_MAX_VERTEX_PROGRAM_ENV_PARAMS : CR_MAX_FRAGMENT_PROGRAM_ENV_PARAMS)
#endif


/* Just need these for autogenerated code in state_get.c, etc */
#if defined(CR_ARB_vertex_program) || defined(CR_NV_vertex_program)
#define CR_any_vertex_program 1
#endif

#if defined(CR_ARB_fragment_program) || defined(CR_NV_fragment_program)
#define CR_any_fragment_program 1
#endif

#if defined(CR_any_vertex_program) || defined(CR_any_fragment_program)
#define CR_any_program 1
#endif


/*
 * OpenGL's implementation-dependent values (not part of any attribute group).
 */
typedef struct {
    GLuint maxTextureUnits;
    GLuint maxTextureSize;
    GLuint max3DTextureSize;    /* OpenGL 1.2 */
#ifdef CR_ARB_texture_cube_map
    GLuint maxCubeMapTextureSize;
#endif
    GLuint maxLights;
    GLuint maxClipPlanes;
    GLuint maxProjectionStackDepth;
    GLuint maxModelviewStackDepth;
    GLuint maxTextureStackDepth;
    GLuint maxColorStackDepth;  /* OpenGL 1.2 */
    GLuint maxAttribStackDepth;
    GLuint maxClientAttribStackDepth;
    GLuint maxNameStackDepth;
    GLuint maxElementsIndices;
    GLuint maxElementsVertices;
    GLuint maxEvalOrder;
    GLuint maxListNesting;
    GLuint maxPixelMapTable;
    GLint maxViewportDims[2];
    GLuint subpixelBits;
    GLfloat aliasedPointSizeRange[2];
    GLfloat smoothPointSizeRange[2];
    GLfloat pointSizeGranularity;
    GLfloat aliasedLineWidthRange[2];
    GLfloat smoothLineWidthRange[2];
    GLfloat lineWidthGranularity;
#ifdef CR_EXT_texture_lod_bias
    GLfloat maxTextureLodBias;
#endif
#ifdef CR_EXT_texture_filter_anisotropic
    GLfloat maxTextureAnisotropy;
#endif
#ifdef CR_ARB_texture_compression
    GLuint numCompressedFormats;
    GLenum compressedFormats[10];
#endif
#ifdef CR_NV_register_combiners
    GLuint maxGeneralCombiners;
#endif
#ifdef CR_NV_texture_rectangle
    GLuint maxRectTextureSize;
#endif
#ifdef CR_NV_fragment_program
    GLuint maxTextureCoords;
    GLuint maxTextureImageUnits;
    /*GLuint maxFragmentProgramLocalParams;*/
#endif
#ifdef CR_NV_vertex_program
    GLuint maxProgramMatrixStackDepth;
    GLuint maxProgramMatrices;
#endif
#ifdef CR_ARB_fragment_program
    GLuint maxFragmentProgramInstructions;
    GLuint maxFragmentProgramLocalParams;
    GLuint maxFragmentProgramEnvParams;
    GLuint maxFragmentProgramTemps;
    GLuint maxFragmentProgramAttribs;
    GLuint maxFragmentProgramAddressRegs;
    GLuint maxFragmentProgramAluInstructions;
    GLuint maxFragmentProgramTexInstructions;
    GLuint maxFragmentProgramTexIndirections;
#endif
#ifdef CR_ARB_vertex_program
    GLuint maxVertexProgramInstructions;
    GLuint maxVertexProgramLocalParams;
    GLuint maxVertexProgramEnvParams;
    GLuint maxVertexProgramTemps;
    GLuint maxVertexProgramAttribs;
    GLuint maxVertexProgramAddressRegs;
#endif
    const GLubyte *extensions;

    /* Framebuffer/visual attributes */
    GLuint redBits, greenBits, blueBits, alphaBits;
    GLuint depthBits, stencilBits, indexBits;
    GLuint accumRedBits, accumGreenBits, accumBlueBits, accumAlphaBits;
    GLuint auxBuffers;
    GLboolean rgbaMode;
    GLboolean doubleBuffer;
    GLboolean stereo;
    GLuint sampleBuffers;
    GLuint samples;
    GLuint level;

} CRLimitsState;


/* Booleans to indicate which OpenGL extensions are supported at runtime.
 * XXX might merge this into the above structure someday.
 */
typedef struct {
    GLboolean ARB_depth_texture;
    GLboolean ARB_fragment_program;
    GLboolean ARB_imaging;
    GLboolean ARB_multisample;
    GLboolean ARB_multitexture;
    GLboolean ARB_occlusion_query;
    GLboolean ARB_point_parameters;
    GLboolean ARB_point_sprite;
    GLboolean ARB_shadow;
    GLboolean ARB_shadow_ambient;
    GLboolean ARB_texture_border_clamp; /* or SGIS_texture_border_clamp */
    GLboolean ARB_texture_compression;
    GLboolean ARB_texture_cube_map; /* or EXT_texture_cube_map */
    GLboolean ARB_texture_env_add; /* standard in OpenGL 1.3 */
    GLboolean ARB_texture_env_combine; /* standard in OpenGL 1.3 */
    GLboolean ARB_texture_env_crossbar; /* standard in OpenGL 1.4 */
    GLboolean ARB_texture_env_dot3; /* standard in OpenGL 1.3 */
    GLboolean ARB_texture_mirrored_repeat;
    GLboolean ARB_texture_non_power_of_two; /* standard in 1.5 */
    GLboolean ARB_transpose_matrix;
    GLboolean ARB_vertex_buffer_object;
    GLboolean ARB_pixel_buffer_object;
    GLboolean ARB_vertex_program;
    GLboolean ARB_window_pos;
    GLboolean EXT_blend_color;
    GLboolean EXT_blend_logic_op;
    GLboolean EXT_blend_func_separate;
    GLboolean EXT_blend_minmax;
    GLboolean EXT_blend_subtract;
    GLboolean EXT_clip_volume_hint;
    GLboolean EXT_fog_coord;
    GLboolean EXT_multi_draw_arrays;
    GLboolean EXT_secondary_color;
    GLboolean EXT_separate_specular_color;
    GLboolean EXT_shadow_funcs;
    GLboolean EXT_stencil_wrap;
    GLboolean EXT_texture_edge_clamp; /* or SGIS_texture_edge_clamp */
    GLboolean EXT_texture_filter_anisotropic;
    GLboolean EXT_texture_lod_bias;
    GLboolean EXT_texture3D;
    GLboolean IBM_rasterpos_clip;
    GLboolean NV_fog_distance;
    GLboolean NV_fragment_program;
    GLboolean NV_register_combiners;
    GLboolean NV_register_combiners2;
    GLboolean NV_texgen_reflection;
    GLboolean NV_texture_rectangle;
    GLboolean NV_vertex_program;
    GLboolean NV_vertex_program1_1;
    GLboolean NV_vertex_program2;
    GLboolean SGIS_generate_mipmap;
    GLboolean EXT_texture_from_pixmap;
    GLboolean ATI_texture_mirror_once;

    /* derived from above */
    GLboolean any_vertex_program;    /* NV or ARB */
    GLboolean any_fragment_program;  /* NV or ARB */
    GLboolean any_program;  /* vertex or fragment */
} CRExtensionState;

extern DECLEXPORT(void) crStateLimitsInit(CRLimitsState *limits);
extern DECLEXPORT(void) crStateLimitsDestroy(CRLimitsState *limits);

extern DECLEXPORT(void) crStateLimitsPrint(const CRLimitsState *limits);

extern DECLEXPORT(GLfloat) crStateComputeVersion(float minVersion);

extern DECLEXPORT(GLubyte *) crStateMergeExtensions(GLuint n, const GLubyte **extensions);

extern DECLEXPORT(void) crStateExtensionsInit( CRLimitsState *limits, CRExtensionState *extensions );


#ifdef __cplusplus
}
#endif

#endif /* CR_STATE_FOG_H */