/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999-2001 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.
*/
/* Authors:
* David Bucciarelli
* Brian Paul
* Daryll Strauss
* Keith Whitwell
* Daniel Borca
* Hiroshi Morii
*/
/* fxsetup.c - 3Dfx VooDoo rendering mode setup functions */
#ifndef FXDRV_H
#define FXDRV_H
/* If you comment out this define, a variable takes its place, letting
* you turn debugging on/off from the debugger.
*/
#include "glheader.h"
#if defined(__linux__)
#include <signal.h>
#endif
#include "context.h"
#include "imports.h"
#include "macros.h"
#include "matrix.h"
#include "mtypes.h"
#include "GL/fxmesa.h"
#include "fxglidew.h"
#include "math/m_vector.h"
#define COPY_FLOAT(dst, src) (dst) = (src)
/* Define some shorter names for these things.
*/
#define XCOORD GR_VERTEX_X_OFFSET
#define YCOORD GR_VERTEX_Y_OFFSET
#define ZCOORD GR_VERTEX_OOZ_OFFSET
#define OOWCOORD GR_VERTEX_OOW_OFFSET
#define S0COORD GR_VERTEX_SOW_TMU0_OFFSET
#define T0COORD GR_VERTEX_TOW_TMU0_OFFSET
#define S1COORD GR_VERTEX_SOW_TMU1_OFFSET
#define T1COORD GR_VERTEX_TOW_TMU1_OFFSET
#ifdef __i386__
#define FXCOLOR4( c ) (* (int *)c)
#else
#define FXCOLOR4( c ) ( \
( ((unsigned int)(c[3]))<<24 ) | \
( ((unsigned int)(c[2]))<<16 ) | \
( ((unsigned int)(c[1]))<<8 ) | \
( (unsigned int)(c[0])) )
#endif
#define TDFXPACKCOLOR1555( r, g, b, a ) \
((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) | \
((a) ? 0x8000 : 0))
#define TDFXPACKCOLOR565( r, g, b ) \
((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
#define TDFXPACKCOLOR8888( r, g, b, a ) \
(((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
/* fastpath flags first
*/
#define SETUP_TMU0 0x1
#define SETUP_TMU1 0x2
#define SETUP_RGBA 0x4
#define SETUP_SNAP 0x8
#define SETUP_XYZW 0x10
#define SETUP_PTEX 0x20
#define SETUP_PSIZ 0x40
#define SETUP_SPEC 0x80
#define SETUP_FOGC 0x100
#define MAX_SETUP 0x200
#define FX_NUM_TMU 2
#define FX_TMU0 GR_TMU0
#define FX_TMU1 GR_TMU1
#define FX_TMU_SPLIT 98
#define FX_TMU_BOTH 99
#define FX_TMU_NONE 100
/* Used for fxMesa->lastUnitsMode */
#define FX_UM_NONE 0x00000000
#define FX_UM_E0_REPLACE 0x00000001
#define FX_UM_E0_MODULATE 0x00000002
#define FX_UM_E0_DECAL 0x00000004
#define FX_UM_E0_BLEND 0x00000008
#define FX_UM_E0_ADD 0x00000010
#define FX_UM_E1_REPLACE 0x00000020
#define FX_UM_E1_MODULATE 0x00000040
#define FX_UM_E1_DECAL 0x00000080
#define FX_UM_E1_BLEND 0x00000100
#define FX_UM_E1_ADD 0x00000200
#define FX_UM_E_ENVMODE 0x000003ff
#define FX_UM_E0_ALPHA 0x00001000
#define FX_UM_E0_LUMINANCE 0x00002000
#define FX_UM_E0_LUMINANCE_ALPHA 0x00004000
#define FX_UM_E0_INTENSITY 0x00008000
#define FX_UM_E0_RGB 0x00010000
#define FX_UM_E0_RGBA 0x00020000
#define FX_UM_E1_ALPHA 0x00040000
#define FX_UM_E1_LUMINANCE 0x00080000
#define FX_UM_E1_LUMINANCE_ALPHA 0x00100000
#define FX_UM_E1_INTENSITY 0x00200000
#define FX_UM_E1_RGB 0x00400000
#define FX_UM_E1_RGBA 0x00800000
#define FX_UM_E_IFMT 0x00fff000
#define FX_UM_COLOR_ITERATED 0x01000000
#define FX_UM_COLOR_CONSTANT 0x02000000
#define FX_UM_ALPHA_ITERATED 0x04000000
#define FX_UM_ALPHA_CONSTANT 0x08000000
/* for Voodoo3/Banshee's grColorCombine() and grAlphaCombine() */
struct tdfx_combine {
GrCombineFunction_t Function; /* Combine function */
GrCombineFactor_t Factor; /* Combine scale factor */
GrCombineLocal_t Local; /* Local combine source */
GrCombineOther_t Other; /* Other combine source */
FxBool Invert; /* Combine result inversion flag */
};
/* for Voodoo3's grTexCombine() */
struct tdfx_texcombine {
GrCombineFunction_t FunctionRGB;
GrCombineFactor_t FactorRGB;
GrCombineFunction_t FunctionAlpha;
GrCombineFactor_t FactorAlpha;
FxBool InvertRGB;
FxBool InvertAlpha;
};
/* for Voodoo5's grColorCombineExt() */
struct tdfx_combine_color_ext {
GrCCUColor_t SourceA;
GrCombineMode_t ModeA;
GrCCUColor_t SourceB;
GrCombineMode_t ModeB;
GrCCUColor_t SourceC;
FxBool InvertC;
GrCCUColor_t SourceD;
FxBool InvertD;
FxU32 Shift;
FxBool Invert;
};
/* for Voodoo5's grAlphaCombineExt() */
struct tdfx_combine_alpha_ext {
GrACUColor_t SourceA;
GrCombineMode_t ModeA;
GrACUColor_t SourceB;
GrCombineMode_t ModeB;
GrACUColor_t SourceC;
FxBool InvertC;
GrACUColor_t SourceD;
FxBool InvertD;
FxU32 Shift;
FxBool Invert;
};
/* for Voodoo5's grTexColorCombineExt() */
struct tdfx_color_texenv {
GrTCCUColor_t SourceA;
GrCombineMode_t ModeA;
GrTCCUColor_t SourceB;
GrCombineMode_t ModeB;
GrTCCUColor_t SourceC;
FxBool InvertC;
GrTCCUColor_t SourceD;
FxBool InvertD;
FxU32 Shift;
FxBool Invert;
};
/* for Voodoo5's grTexAlphaCombineExt() */
struct tdfx_alpha_texenv {
GrTACUColor_t SourceA;
GrCombineMode_t ModeA;
GrTACUColor_t SourceB;
GrCombineMode_t ModeB;
GrTACUColor_t SourceC;
FxBool InvertC;
GrTCCUColor_t SourceD;
FxBool InvertD;
FxU32 Shift;
FxBool Invert;
};
/* Voodoo5's texture combine environment */
struct tdfx_texcombine_ext {
struct tdfx_alpha_texenv Alpha;
struct tdfx_color_texenv Color;
GrColor_t EnvColor;
};
/*
Memory range from startAddr to endAddr-1
*/
typedef struct MemRange_t
{
struct MemRange_t *next;
FxU32 startAddr, endAddr;
}
MemRange;
typedef struct
{
GLsizei width, height; /* image size */
GLint wScale, hScale; /* image scale factor */
GrTextureFormat_t glideFormat; /* Glide image format */
}
tfxMipMapLevel;
/*
* TDFX-specific texture object data. This hangs off of the
* struct gl_texture_object DriverData pointer.
*/
typedef struct tfxTexInfo_t
{
struct tfxTexInfo_t *next;
struct gl_texture_object *tObj;
GLuint lastTimeUsed;
FxU32 whichTMU;
GLboolean isInTM;
MemRange *tm[FX_NUM_TMU];
GLint minLevel, maxLevel;
GLint baseLevelInternalFormat;
GrTexInfo info;
GrTextureFilterMode_t minFilt;
GrTextureFilterMode_t maxFilt;
FxBool LODblend;
GrTextureClampMode_t sClamp;
GrTextureClampMode_t tClamp;
GrMipMapMode_t mmMode;
GLfloat sScale, tScale;
GrTexTable_t paltype;
GuTexPalette palette;
GLboolean fixedPalette;
GLboolean validated;
GLboolean padded;
}
tfxTexInfo;
typedef struct
{
GLuint swapBuffer;
GLuint reqTexUpload;
GLuint texUpload;
GLuint memTexUpload;
}
tfxStats;
typedef struct
{
/* Alpha test */
GLboolean alphaTestEnabled;
GrCmpFnc_t alphaTestFunc;
GLfloat alphaTestRefValue;
/* Blend function */
GLboolean blendEnabled;
GrAlphaBlendFnc_t blendSrcFuncRGB;
GrAlphaBlendFnc_t blendDstFuncRGB;
GrAlphaBlendFnc_t blendSrcFuncAlpha;
GrAlphaBlendFnc_t blendDstFuncAlpha;
GrAlphaBlendOp_t blendEqRGB;
GrAlphaBlendOp_t blendEqAlpha;
/* Depth test */
GLboolean depthTestEnabled;
GLboolean depthMask;
GrCmpFnc_t depthTestFunc;
FxI32 depthBias;
/* Stencil */
GLboolean stencilEnabled;
GrCmpFnc_t stencilFunction; /* Stencil function */
GrStencil_t stencilRefValue; /* Stencil reference value */
GrStencil_t stencilValueMask; /* Value mask */
GrStencil_t stencilWriteMask; /* Write mask */
GrCmpFnc_t stencilFailFunc; /* Stencil fail function */
GrCmpFnc_t stencilZFailFunc; /* Stencil pass, depth fail function */
GrCmpFnc_t stencilZPassFunc; /* Stencil pass, depth pass function */
GrStencil_t stencilClear; /* Buffer clear value */
}
tfxUnitsState;
/* Flags for fxMesa->new_state
*/
#define FX_NEW_TEXTURING 0x1
#define FX_NEW_BLEND 0x2
#define FX_NEW_ALPHA 0x4
#define FX_NEW_DEPTH 0x8
#define FX_NEW_FOG 0x10
#define FX_NEW_SCISSOR 0x20
#define FX_NEW_COLOR_MASK 0x40
#define FX_NEW_CULL 0x80
#define FX_NEW_STENCIL 0x100
#define FX_CONTEXT(ctx) ((fxMesaContext)((ctx)->DriverCtx))
#define FX_TEXTURE_DATA(texUnit) fxTMGetTexInfo((texUnit)->_Current)
#define fxTMGetTexInfo(o) ((tfxTexInfo*)((o)->DriverData))
#define FX_MIPMAP_DATA(img) ((tfxMipMapLevel *) (img)->DriverData)
#define BEGIN_BOARD_LOCK()
#define END_BOARD_LOCK()
#define BEGIN_CLIP_LOOP()
#define END_CLIP_LOOP()
/* Covers the state referenced by IsInHardware:
*/
#define _FX_NEW_IS_IN_HARDWARE (_NEW_TEXTURE| \
_NEW_HINT| \
_NEW_STENCIL| \
_NEW_BUFFERS| \
_NEW_COLOR| \
_NEW_LIGHT)
/* Covers the state referenced by fxDDChooseRenderState
*/
#define _FX_NEW_RENDERSTATE (_FX_NEW_IS_IN_HARDWARE | \
_DD_NEW_FLATSHADE | \
_DD_NEW_TRI_LIGHT_TWOSIDE| \
_DD_NEW_TRI_OFFSET | \
_DD_NEW_TRI_UNFILLED | \
_DD_NEW_TRI_SMOOTH | \
_DD_NEW_TRI_STIPPLE | \
_DD_NEW_LINE_SMOOTH | \
_DD_NEW_LINE_STIPPLE | \
_DD_NEW_LINE_WIDTH | \
_DD_NEW_POINT_SMOOTH | \
_DD_NEW_POINT_SIZE | \
_NEW_LINE)
/* Covers the state referenced by fxDDChooseSetupFunction.
*/
#define _FX_NEW_SETUP_FUNCTION (_NEW_LIGHT| \
_NEW_FOG| \
_NEW_TEXTURE| \
_NEW_COLOR) \
/* lookup table for scaling y bit colors up to 8 bits */
extern GLuint FX_rgb_scale_4[16];
extern GLuint FX_rgb_scale_5[32];
extern GLuint FX_rgb_scale_6[64];
typedef void (*fx_tri_func) (fxMesaContext, GrVertex *, GrVertex *, GrVertex *);
typedef void (*fx_line_func) (fxMesaContext, GrVertex *, GrVertex *);
typedef void (*fx_point_func) (fxMesaContext, GrVertex *);
struct tfxMesaContext
{
GrTexTable_t glbPalType;
GuTexPalette glbPalette;
GLcontext *glCtx; /* the core Mesa context */
GLvisual *glVis; /* describes the color buffer */
GLframebuffer *glBuffer; /* the ancillary buffers */
GLint board; /* the board used for this context */
GLint width, height; /* size of color buffer */
GrBuffer_t currentFB;
GLboolean bgrOrder;
GrColor_t color;
GrColor_t clearC;
GrAlpha_t clearA;
GLuint constColor;
GrCullMode_t cullMode;
tfxUnitsState unitsState;
tfxUnitsState restoreUnitsState; /* saved during multipass */
GLboolean multipass; /* true when drawing intermediate pass */
GLuint new_state;
GLuint new_gl_state;
/* Texture Memory Manager Data
*/
GLuint texBindNumber;
GLint tmuSrc;
GLuint lastUnitsMode;
GLuint freeTexMem[FX_NUM_TMU];
MemRange *tmPool;
MemRange *tmFree[FX_NUM_TMU];
GLenum fogTableMode;
GLfloat fogDensity;
GLfloat fogStart, fogEnd;
GrFog_t *fogTable;
GLint textureAlign;
GLint textureMaxLod;
/* Vertex building and storage:
*/
GLuint tmu_source[FX_NUM_TMU];
GLuint SetupIndex;
GLuint stw_hint_state; /* for grHints */
GrVertex *verts;
GLboolean snapVertices; /* needed for older Voodoo hardware */
/* Rasterization:
*/
GLuint render_index;
GLuint fallback;
GLenum render_primitive;
GLenum raster_primitive;
/* Current rasterization functions
*/
fx_point_func draw_point;
fx_line_func draw_line;
fx_tri_func draw_tri;
/* Keep texture scales somewhere handy:
*/
GLfloat s0scale;
GLfloat s1scale;
GLfloat t0scale;
GLfloat t1scale;
GLfloat inv_s0scale;
GLfloat inv_s1scale;
GLfloat inv_t0scale;
GLfloat inv_t1scale;
/* Glide stuff
*/
tfxStats stats;
void *state;
/* Options */
GLboolean verbose;
GLboolean haveTwoTMUs; /* True if we really have 2 tmu's */
GLboolean haveHwAlpha;
GLboolean haveHwStencil;
GLboolean haveZBuffer;
GLboolean haveDoubleBuffer;
GLboolean haveGlobalPaletteTexture;
GLint swapInterval;
GLint maxPendingSwapBuffers;
GrContext_t glideContext;
int screen_width;
int screen_height;
int clipMinX;
int clipMaxX;
int clipMinY;
int clipMaxY;
int colDepth;
GLboolean fsaa;
/* Glide (per card) capabilities. These get mirrored
* from `glbHWConfig' when creating a new context...
*/
GrSstType type;
FxBool HavePalExt; /* PALETTE6666 */
FxBool HavePixExt; /* PIXEXT */
FxBool HaveTexFmt; /* TEXFMT */
FxBool HaveCmbExt; /* COMBINE */
FxBool HaveMirExt; /* TEXMIRROR */
FxBool HaveTexUma; /* TEXUMA */
FxBool HaveTexus2; /* Texus 2 - FXT1 */
struct tdfx_glide Glide;
char rendererString[64];
};
extern void fxSetupFXUnits(GLcontext *);
extern void fxSetupDDPointers(GLcontext *);
/* fxvb.c:
*/
extern void fxAllocVB(GLcontext * ctx);
extern void fxFreeVB(GLcontext * ctx);
extern void fxPrintSetupFlags(char *msg, GLuint flags );
extern void fxCheckTexSizes( GLcontext *ctx );
extern void fxBuildVertices( GLcontext *ctx, GLuint start, GLuint end,
GLuint newinputs );
extern void fxChooseVertexState( GLcontext *ctx );
/* fxtrifuncs:
*/
extern void fxDDInitTriFuncs(GLcontext *);
extern void fxDDChooseRenderState(GLcontext * ctx);
extern void fxUpdateDDSpanPointers(GLcontext *);
extern void fxSetupDDSpanPointers(GLcontext *);
extern void fxPrintTextureData(tfxTexInfo * ti);
extern const struct gl_texture_format *
fxDDChooseTextureFormat( GLcontext *ctx, GLint internalFormat,
GLenum srcFormat, GLenum srcType );
extern void fxDDTexImage2D(GLcontext * ctx, GLenum target, GLint level,
GLint internalFormat, GLint width, GLint height,
GLint border, GLenum format, GLenum type,
const GLvoid * pixels,
const struct gl_pixelstore_attrib *packing,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern void fxDDTexSubImage2D(GLcontext * ctx, GLenum target, GLint level,
GLint xoffset, GLint yoffset,
GLsizei width, GLsizei height,
GLenum format, GLenum type,
const GLvoid * pixels,
const struct gl_pixelstore_attrib *packing,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern void fxDDCompressedTexImage2D(GLcontext *ctx, GLenum target,
GLint level, GLint internalFormat,
GLsizei width, GLsizei height, GLint border,
GLsizei imageSize, const GLvoid *data,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern void fxDDCompressedTexSubImage2D(GLcontext *ctx, GLenum target,
GLint level, GLint xoffset,
GLint yoffset, GLsizei width,
GLint height, GLenum format,
GLsizei imageSize, const GLvoid *data,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern void fxDDTexImage1D(GLcontext * ctx, GLenum target, GLint level,
GLint internalFormat, GLint width,
GLint border, GLenum format, GLenum type,
const GLvoid * pixels,
const struct gl_pixelstore_attrib *packing,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern void fxDDTexSubImage1D(GLcontext * ctx, GLenum target, GLint level,
GLint xoffset, GLint width,
GLenum format, GLenum type,
const GLvoid * pixels,
const struct gl_pixelstore_attrib *packing,
struct gl_texture_object *texObj,
struct gl_texture_image *texImage);
extern GLboolean fxDDTestProxyTexImage (GLcontext *ctx, GLenum target,
GLint level, GLint internalFormat,
GLenum format, GLenum type,
GLint width, GLint height,
GLint depth, GLint border);
extern void fxDDTexEnv(GLcontext *, GLenum, GLenum, const GLfloat *);
extern void fxDDTexParam(GLcontext *, GLenum, struct gl_texture_object *,
GLenum, const GLfloat *);
extern void fxDDTexBind(GLcontext *, GLenum, struct gl_texture_object *);
extern struct gl_texture_object *fxDDNewTextureObject( GLcontext *ctx, GLuint name, GLenum target );
extern void fxDDTexDel(GLcontext *, struct gl_texture_object *);
extern GLboolean fxDDIsTextureResident(GLcontext *, struct gl_texture_object *);
extern void fxDDTexPalette(GLcontext *, struct gl_texture_object *);
extern void fxDDTexUseGlbPalette(GLcontext *, GLboolean);
extern void fxDDEnable(GLcontext *, GLenum, GLboolean);
extern void fxDDAlphaFunc(GLcontext *, GLenum, GLfloat);
extern void fxDDBlendFuncSeparate(GLcontext *, GLenum, GLenum, GLenum, GLenum);
extern void fxDDBlendEquationSeparate(GLcontext *, GLenum, GLenum);
extern void fxDDDepthMask(GLcontext *, GLboolean);
extern void fxDDDepthFunc(GLcontext *, GLenum);
extern void fxDDStencilFuncSeparate (GLcontext *ctx, GLenum face, GLenum func, GLint ref, GLuint mask);
extern void fxDDStencilMaskSeparate (GLcontext *ctx, GLenum face, GLuint mask);
extern void fxDDStencilOpSeparate (GLcontext *ctx, GLenum face, GLenum sfail, GLenum zfail, GLenum zpass);
extern void fxDDInitExtensions(GLcontext * ctx);
extern void fxTMInit(fxMesaContext ctx);
extern void fxTMClose(fxMesaContext ctx);
extern void fxTMRestoreTextures_NoLock(fxMesaContext ctx);
extern void fxTMMoveInTM(fxMesaContext, struct gl_texture_object *, GLint);
extern void fxTMMoveOutTM(fxMesaContext, struct gl_texture_object *);
#define fxTMMoveOutTM_NoLock fxTMMoveOutTM
extern void fxTMFreeTexture(fxMesaContext, struct gl_texture_object *);
extern void fxTMReloadMipMapLevel(fxMesaContext, struct gl_texture_object *,
GLint);
extern void fxTMReloadSubMipMapLevel(fxMesaContext,
struct gl_texture_object *, GLint, GLint,
GLint);
extern int fxTMCheckStartAddr (fxMesaContext fxMesa, GLint tmu, tfxTexInfo *ti);
extern void fxTexGetFormat(GLcontext *, GLenum, GrTextureFormat_t *, GLint *); /* [koolsmoky] */
extern int fxTexGetInfo(int, int, GrLOD_t *, GrAspectRatio_t *,
float *, float *, int *, int *);
extern void fxDDScissor(GLcontext * ctx,
GLint x, GLint y, GLsizei w, GLsizei h);
extern void fxDDFogfv(GLcontext * ctx, GLenum pname, const GLfloat * params);
extern void fxDDColorMask(GLcontext * ctx,
GLboolean r, GLboolean g, GLboolean b, GLboolean a);
extern void fxDDWriteDepthSpan(GLcontext * ctx, GLuint n, GLint x, GLint y,
const GLuint depth[], const GLubyte mask[]);
extern void fxDDReadDepthSpan(GLcontext * ctx, GLuint n, GLint x, GLint y,
GLuint depth[]);
extern void fxDDWriteDepthPixels(GLcontext * ctx, GLuint n,
const GLint x[], const GLint y[],
const GLuint depth[], const GLubyte mask[]);
extern void fxDDReadDepthPixels(GLcontext * ctx, GLuint n,
const GLint x[], const GLint y[],
GLuint depth[]);
extern void fxDDShadeModel(GLcontext * ctx, GLenum mode);
extern void fxDDCullFace(GLcontext * ctx, GLenum mode);
extern void fxDDFrontFace(GLcontext * ctx, GLenum mode);
extern void fxPrintRenderState(const char *msg, GLuint state);
extern void fxPrintHintState(const char *msg, GLuint state);
extern int fxDDInitFxMesaContext(fxMesaContext fxMesa);
extern void fxDDDestroyFxMesaContext(fxMesaContext fxMesa);
extern void fxSetScissorValues(GLcontext * ctx);
extern void fxTMMoveInTM_NoLock(fxMesaContext fxMesa,
struct gl_texture_object *tObj, GLint where);
extern void fxCheckIsInHardware(GLcontext *ctx);
/* fxsetup:
* semi-private functions
*/
void fxSetupCull (GLcontext * ctx);
void fxSetupScissor (GLcontext * ctx);
void fxSetupColorMask (GLcontext * ctx);
void fxSetupBlend (GLcontext *ctx);
void fxSetupDepthTest (GLcontext *ctx);
void fxSetupTexture (GLcontext *ctx);
void fxSetupStencil (GLcontext *ctx);
void fxSetupStencilFace (GLcontext *ctx, GLint face);
/* Flags for software fallback cases */
#define FX_FALLBACK_TEXTURE_MAP 0x0001
#define FX_FALLBACK_DRAW_BUFFER 0x0002
#define FX_FALLBACK_SPECULAR 0x0004
#define FX_FALLBACK_STENCIL 0x0008
#define FX_FALLBACK_RENDER_MODE 0x0010
#define FX_FALLBACK_LOGICOP 0x0020
#define FX_FALLBACK_TEXTURE_ENV 0x0040
#define FX_FALLBACK_TEXTURE_BORDER 0x0080
#define FX_FALLBACK_COLORMASK 0x0100
#define FX_FALLBACK_BLEND 0x0200
#define FX_FALLBACK_TEXTURE_MULTI 0x0400
extern GLuint fx_check_IsInHardware(GLcontext *ctx);
/***
*** CNORM: clamp float to [0,1] and map to float in [0,255]
***/
#if defined(USE_IEEE) && !defined(DEBUG)
#define IEEE_0996 0x3f7f0000 /* 0.996 or so */
#define CNORM(N, F) \
do { \
fi_type __tmp; \
__tmp.f = (F); \
if (__tmp.i < 0) \
N = 0; \
else if (__tmp.i >= IEEE_0996) \
N = 255.0f; \
else { \
N = (F) * 255.0f; \
} \
} while (0)
#else
#define CNORM(n, f) \
n = (CLAMP((f), 0.0F, 1.0F) * 255.0F)
#endif
/* run-time debugging */
#ifndef FX_DEBUG
#define FX_DEBUG 0
#endif
#if FX_DEBUG
extern int TDFX_DEBUG;
#else
#define TDFX_DEBUG 0
#endif
/* dirty hacks */
#define FX_RESCALE_BIG_TEXURES_HACK 1
#define FX_COMPRESS_S3TC_AS_FXT1_HACK 1
#endif