X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fswrast%2Fs_context.h;h=cdd6fa5048d6df2b3968323e20ef29c26b21f6e9;hb=88f3656ea7ae57d22141225db0c5d90ceab420dd;hp=3d738819e94c0d6d8f0ef98563ea5086448ec33d;hpb=5374e4ba7eaca2ee0ca73863ffbe9e639d090e3e;p=mesa.git diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h index 3d738819e94..cdd6fa5048d 100644 --- a/src/mesa/swrast/s_context.h +++ b/src/mesa/swrast/s_context.h @@ -1,8 +1,8 @@ /* * Mesa 3-D graphics library - * Version: 6.5 + * Version: 6.5.3 * - * Copyright (C) 1999-2005 Brian Paul All Rights Reserved. + * Copyright (C) 1999-2007 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"), @@ -43,169 +43,10 @@ #ifndef S_CONTEXT_H #define S_CONTEXT_H -#include "mtypes.h" +#include "main/mtypes.h" +#include "shader/prog_execute.h" #include "swrast.h" - - -/** - * \defgroup SpanFlags SPAN_XXX-flags - * Bitmasks to indicate which span_arrays need to be computed - * (sw_span::interpMask) or have already been filled in (sw_span::arrayMask) - */ -/*@{*/ -#define SPAN_RGBA 0x001 -#define SPAN_SPEC 0x002 -#define SPAN_INDEX 0x004 -#define SPAN_Z 0x008 -#define SPAN_W 0x010 -#define SPAN_FOG 0x020 -#define SPAN_TEXTURE 0x040 -#define SPAN_INT_TEXTURE 0x080 -#define SPAN_LAMBDA 0x100 -#define SPAN_COVERAGE 0x200 -#define SPAN_FLAT 0x400 /**< flat shading? */ -#define SPAN_XY 0x800 -#define SPAN_MASK 0x1000 -/*@}*/ - - -/** - * \struct span_arrays - * \brief Arrays of fragment values. - * - * These will either be computed from the x/xStep values above or - * filled in by glDraw/CopyPixels, etc. - * These arrays are separated out of sw_span to conserve memory. - */ -struct span_arrays { - /* XXX the next three fields could go into a union */ - GLchan rgb[MAX_WIDTH][3]; - GLchan rgba[MAX_WIDTH][4]; - GLuint index[MAX_WIDTH]; - GLchan spec[MAX_WIDTH][4]; /* specular color */ - GLint x[MAX_WIDTH]; /**< X/Y used for point/line rendering only */ - GLint y[MAX_WIDTH]; /**< X/Y used for point/line rendering only */ - GLuint z[MAX_WIDTH]; - GLfloat fog[MAX_WIDTH]; - GLfloat texcoords[MAX_TEXTURE_COORD_UNITS][MAX_WIDTH][4]; - GLfloat lambda[MAX_TEXTURE_COORD_UNITS][MAX_WIDTH]; - GLfloat coverage[MAX_WIDTH]; - - /** This mask indicates which fragments are alive or culled */ - GLubyte mask[MAX_WIDTH]; -}; - - -/** - * \struct sw_span - * \brief Contains data for either a horizontal line or a set of - * pixels that are passed through a pipeline of functions before being - * drawn. - * - * The sw_span structure describes the colors, Z, fogcoord, texcoords, - * etc for either a horizontal run or an array of independent pixels. - * We can either specify a base/step to indicate interpolated values, or - * fill in arrays of values. The interpMask and arrayMask bitfields - * indicate which are active. - * - * With this structure it's easy to hand-off span rasterization to - * subroutines instead of doing it all inline in the triangle functions - * like we used to do. - * It also cleans up the local variable namespace a great deal. - * - * It would be interesting to experiment with multiprocessor rasterization - * with this structure. The triangle rasterizer could simply emit a - * stream of these structures which would be consumed by one or more - * span-processing threads which could run in parallel. - */ -struct sw_span { - GLint x, y; - - /** Only need to process pixels between start <= i < end */ - /** At this time, start is always zero. */ - GLuint start, end; - - /** This flag indicates that mask[] array is effectively filled with ones */ - GLboolean writeAll; - - /** either GL_POLYGON, GL_LINE, GL_POLYGON, GL_BITMAP */ - GLenum primitive; - - /** 0 = front-facing span, 1 = back-facing span (for two-sided stencil) */ - GLuint facing; - - /** - * This bitmask (of \link SpanFlags SPAN_* flags\endlink) indicates - * which of the x/xStep variables are relevant. - */ - GLbitfield interpMask; - - /* For horizontal spans, step is the partial derivative wrt X. - * For lines, step is the delta from one fragment to the next. - */ -#if CHAN_TYPE == GL_FLOAT - GLfloat red, redStep; - GLfloat green, greenStep; - GLfloat blue, blueStep; - GLfloat alpha, alphaStep; - GLfloat specRed, specRedStep; - GLfloat specGreen, specGreenStep; - GLfloat specBlue, specBlueStep; -#else /* CHAN_TYPE == GL_UNSIGNED_BYTE or GL_UNSIGNED_SHORT */ - GLfixed red, redStep; - GLfixed green, greenStep; - GLfixed blue, blueStep; - GLfixed alpha, alphaStep; - GLfixed specRed, specRedStep; - GLfixed specGreen, specGreenStep; - GLfixed specBlue, specBlueStep; -#endif - GLfixed index, indexStep; - GLfixed z, zStep; /* XXX z should probably be GLuint */ - GLfloat fog, fogStep; - GLfloat tex[MAX_TEXTURE_COORD_UNITS][4]; /* s, t, r, q */ - GLfloat texStepX[MAX_TEXTURE_COORD_UNITS][4]; - GLfloat texStepY[MAX_TEXTURE_COORD_UNITS][4]; - GLfixed intTex[2], intTexStep[2]; /* s, t only */ - - /* partial derivatives wrt X and Y. */ - GLfloat dzdx, dzdy; - GLfloat w, dwdx, dwdy; - GLfloat drdx, drdy; - GLfloat dgdx, dgdy; - GLfloat dbdx, dbdy; - GLfloat dadx, dady; - GLfloat dsrdx, dsrdy; - GLfloat dsgdx, dsgdy; - GLfloat dsbdx, dsbdy; - GLfloat dfogdx, dfogdy; - - /** - * This bitmask (of \link SpanFlags SPAN_* flags\endlink) indicates - * which of the fragment arrays in the span_arrays struct are relevant. - */ - GLbitfield arrayMask; - - /** - * We store the arrays of fragment values in a separate struct so - * that we can allocate sw_span structs on the stack without using - * a lot of memory. The span_arrays struct is about 400KB while the - * sw_span struct is only about 512 bytes. - */ - struct span_arrays *array; -}; - - -#define INIT_SPAN(S, PRIMITIVE, END, INTERP_MASK, ARRAY_MASK) \ -do { \ - (S).primitive = (PRIMITIVE); \ - (S).interpMask = (INTERP_MASK); \ - (S).arrayMask = (ARRAY_MASK); \ - (S).start = 0; \ - (S).end = (END); \ - (S).facing = 0; \ - (S).array = SWRAST_CONTEXT(ctx)->SpanArrays; \ -} while (0) +#include "s_span.h" typedef void (*texture_sample_func)(GLcontext *ctx, @@ -215,7 +56,8 @@ typedef void (*texture_sample_func)(GLcontext *ctx, typedef void (_ASMAPIP blend_func)( GLcontext *ctx, GLuint n, const GLubyte mask[], - GLchan src[][4], CONST GLchan dst[][4] ); + GLvoid *src, const GLvoid *dst, + GLenum chanType); typedef void (*swrast_point_func)( GLcontext *ctx, const SWvertex *); @@ -226,7 +68,13 @@ typedef void (*swrast_tri_func)( GLcontext *ctx, const SWvertex *, const SWvertex *, const SWvertex *); -/** \defgroup Bitmasks +typedef void (*validate_texture_image_func)(GLcontext *ctx, + struct gl_texture_object *texObj, + GLuint face, GLuint level); + + +/** + * \defgroup Bitmasks * Bitmasks to indicate which rasterization options are enabled * (RasterMask) */ @@ -245,6 +93,7 @@ typedef void (*swrast_tri_func)( GLcontext *ctx, const SWvertex *, #define TEXTURE_BIT 0x1000 /**< Texturing really enabled */ #define FRAGPROG_BIT 0x2000 /**< Fragment program enabled */ #define ATIFRAGSHADER_BIT 0x4000 /**< ATI Fragment shader enabled */ +#define CLAMPING_BIT 0x8000 /**< Clamp colors to [0,1] */ /*@}*/ #define _SWRAST_NEW_RASTERMASK (_NEW_BUFFERS| \ @@ -261,7 +110,7 @@ typedef void (*swrast_tri_func)( GLcontext *ctx, const SWvertex *, /** * \struct SWcontext - * \brief SWContext? + * \brief Per-context state that's private to the software rasterizer module. */ typedef struct { @@ -279,13 +128,23 @@ typedef struct * _swrast_validate_derived(): */ GLbitfield _RasterMask; - GLfloat _BackfaceSign; + GLfloat _BackfaceSign; /** +1 or -1 */ + GLfloat _BackfaceCullSign; /** +1, 0, or -1 */ GLboolean _PreferPixelFog; /* Compute fog blend factor per fragment? */ GLboolean _AnyTextureCombine; - GLchan _FogColor[3]; GLboolean _FogEnabled; + GLboolean _DeferredTexture; GLenum _FogMode; /* either GL_FOG_MODE or fragment program's fog mode */ + /** List/array of the fragment attributes to interpolate */ + GLuint _ActiveAttribs[FRAG_ATTRIB_MAX]; + /** Same info, but as a bitmask */ + GLbitfield _ActiveAttribMask; + /** Number of fragment attributes to interpolate */ + GLuint _NumActiveAttribs; + /** Indicates how each attrib is to be interpolated (lines/tris) */ + GLenum _InterpMode[FRAG_ATTRIB_MAX]; /* GL_FLAT or GL_SMOOTH (for now) */ + /* Accum buffer temporaries. */ GLboolean _IntegerAccumMode; /**< Storing unscaled integers? */ @@ -294,27 +153,37 @@ typedef struct /* Working values: */ GLuint StippleCounter; /**< Line stipple counter */ + GLuint PointLineFacing; GLbitfield NewState; GLuint StateChanges; GLenum Primitive; /* current primitive being drawn (ala glBegin) */ - /** Mechanism to allow driver (like X11) to register further - * software rasterization routines. + void (*InvalidateState)( GLcontext *ctx, GLbitfield new_state ); + + /** + * When the NewState mask intersects these masks, we invalidate the + * Point/Line/Triangle function pointers below. + */ + /*@{*/ + GLbitfield InvalidatePointMask; + GLbitfield InvalidateLineMask; + GLbitfield InvalidateTriangleMask; + /*@}*/ + + /** + * Device drivers plug in functions for these callbacks. + * Will be called when the GL state change mask intersects the above masks. */ /*@{*/ void (*choose_point)( GLcontext * ); void (*choose_line)( GLcontext * ); void (*choose_triangle)( GLcontext * ); - - GLbitfield invalidate_point; - GLbitfield invalidate_line; - GLbitfield invalidate_triangle; /*@}*/ - /** Function pointers for dispatch behind public entrypoints. */ + /** + * Current point, line and triangle drawing functions. + */ /*@{*/ - void (*InvalidateState)( GLcontext *ctx, GLbitfield new_state ); - swrast_point_func Point; swrast_line_func Line; swrast_tri_func Triangle; @@ -336,12 +205,13 @@ typedef struct * this object is big and causes problems when allocated on the stack * on some systems. */ - struct span_arrays *SpanArrays; + SWspanarrays *SpanArrays; + SWspanarrays *ZoomedArrays; /**< For pixel zooming */ /** * Used to buffer N GL_POINTS, instead of rendering one by one. */ - struct sw_span PointSpan; + SWspan PointSpan; /** Internal hooks, kept up to date by the same mechanism as above. */ @@ -353,28 +223,68 @@ typedef struct */ GLchan *TexelBuffer; + validate_texture_image_func ValidateTextureImage; + + /** State used during execution of fragment programs */ + struct gl_program_machine FragProgMachine; + } SWcontext; extern void _swrast_validate_derived( GLcontext *ctx ); +extern void +_swrast_update_texture_samplers(GLcontext *ctx); -#define SWRAST_CONTEXT(ctx) ((SWcontext *)ctx->swrast_context) -#define RENDER_START(SWctx, GLctx) \ - do { \ - if ((SWctx)->Driver.SpanRenderStart) { \ - (*(SWctx)->Driver.SpanRenderStart)(GLctx); \ - } \ - } while (0) +/** Return SWcontext for the given GLcontext */ +static INLINE SWcontext * +SWRAST_CONTEXT(GLcontext *ctx) +{ + return (SWcontext *) ctx->swrast_context; +} -#define RENDER_FINISH(SWctx, GLctx) \ - do { \ - if ((SWctx)->Driver.SpanRenderFinish) { \ - (*(SWctx)->Driver.SpanRenderFinish)(GLctx); \ - } \ - } while (0) +/** const version of above */ +static INLINE const SWcontext * +CONST_SWRAST_CONTEXT(const GLcontext *ctx) +{ + return (const SWcontext *) ctx->swrast_context; +} + + +/** + * Called prior to framebuffer reading/writing. + * For drivers that rely on swrast for fallback rendering, this is the + * driver's opportunity to map renderbuffers and textures. + */ +static INLINE void +swrast_render_start(GLcontext *ctx) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + if (swrast->Driver.SpanRenderStart) + swrast->Driver.SpanRenderStart(ctx); +} + + +/** Called after framebuffer reading/writing */ +static INLINE void +swrast_render_finish(GLcontext *ctx) +{ + SWcontext *swrast = SWRAST_CONTEXT(ctx); + if (swrast->Driver.SpanRenderFinish) + swrast->Driver.SpanRenderFinish(ctx); +} + + + +/** + * Size of an RGBA pixel, in bytes, for given datatype. + */ +#define RGBA_PIXEL_SIZE(TYPE) \ + ((TYPE == GL_UNSIGNED_BYTE) ? 4 * sizeof(GLubyte) : \ + ((TYPE == GL_UNSIGNED_SHORT) ? 4 * sizeof(GLushort) \ + : 4 * sizeof(GLfloat))) @@ -391,4 +301,19 @@ _swrast_validate_derived( GLcontext *ctx ); #define FixedToChan(X) FixedToInt(X) #endif + +/** + * For looping over fragment attributes in the pointe, line + * triangle rasterizers. + */ +#define ATTRIB_LOOP_BEGIN \ + { \ + GLuint a; \ + for (a = 0; a < swrast->_NumActiveAttribs; a++) { \ + const GLuint attr = swrast->_ActiveAttribs[a]; + +#define ATTRIB_LOOP_END } } + + + #endif