diff options
Diffstat (limited to 'src/mesa/swrast/s_context.h')
| -rw-r--r-- | src/mesa/swrast/s_context.h | 213 |
1 files changed, 14 insertions, 199 deletions
diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h index 37d7081d4d6..3a9a48922ef 100644 --- a/src/mesa/swrast/s_context.h +++ b/src/mesa/swrast/s_context.h @@ -45,204 +45,7 @@ #include "mtypes.h" #include "swrast.h" - - -/** - * \defgroup SpanFlags SPAN_XXX-flags - * Bitmasks to indicate which sw_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 -#define SPAN_VARYING 0x2000 -/*@}*/ - -#if 0 -/* alternate arrangement for code below */ -struct arrays2 { - union { - GLubyte sz1[MAX_WIDTH][4]; /* primary color */ - GLushort sz2[MAX_WIDTH][4]; - GLfloat sz4[MAX_WIDTH][4]; - } rgba; - union { - GLubyte sz1[MAX_WIDTH][4]; /* specular color and temp storage */ - GLushort sz2[MAX_WIDTH][4]; - GLfloat sz4[MAX_WIDTH][4]; - } spec; -}; -#endif - - -/** - * \sw_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. - */ -typedef struct sw_span_arrays { - GLenum ChanType; /**< Color channel type, GL_UNSIGNED_BYTE, GL_FLOAT */ - union { - struct { - GLubyte rgba[MAX_WIDTH][4]; /**< primary color */ - GLubyte spec[MAX_WIDTH][4]; /**< specular color and temp storage */ - } sz1; - struct { - GLushort rgba[MAX_WIDTH][4]; - GLushort spec[MAX_WIDTH][4]; - } sz2; - struct { - GLfloat rgba[MAX_WIDTH][4]; - GLfloat spec[MAX_WIDTH][4]; - } sz4; - } color; - /** XXX these are temporary fields, pointing into above color arrays */ - GLchan (*rgba)[4]; - GLchan (*spec)[4]; - - GLuint index[MAX_WIDTH]; - 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]; - GLfloat varying[MAX_WIDTH][MAX_VARYING_VECTORS][VARYINGS_PER_VECTOR]; - - /** This mask indicates which fragments are alive or culled */ - GLubyte mask[MAX_WIDTH]; -} SWspanarrays; - - -/** - * \SWspan - * \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. - */ -typedef 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 */ - GLfloat var[MAX_VARYING_VECTORS][VARYINGS_PER_VECTOR]; - GLfloat varStepX[MAX_VARYING_VECTORS][VARYINGS_PER_VECTOR]; - GLfloat varStepY[MAX_VARYING_VECTORS][VARYINGS_PER_VECTOR]; - - /* 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. - */ - SWspanarrays *array; -} SWspan; - - - -#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, @@ -269,7 +72,8 @@ typedef void (*validate_texture_image_func)(GLcontext *ctx, GLuint face, GLuint level); -/** \defgroup Bitmasks +/** + * \defgroup Bitmasks * Bitmasks to indicate which rasterization options are enabled * (RasterMask) */ @@ -329,6 +133,17 @@ typedef struct GLboolean _FogEnabled; GLenum _FogMode; /* either GL_FOG_MODE or fragment program's fog mode */ + /** Multiple render targets */ + GLbitfield _ColorOutputsMask; + GLuint _NumColorOutputs; + + /** Fragment attributes to compute during rasterization. + * Mask of FRAG_BIT_* flags. + */ + GLbitfield _FragmentAttribs; + GLuint _MinFragmentAttrib; /**< Lowest bit set in _FragmentAttribs */ + GLuint _MaxFragmentAttrib; /**< Highest bit set in _FragmentAttribs + 1 */ + /* Accum buffer temporaries. */ GLboolean _IntegerAccumMode; /**< Storing unscaled integers? */ |