diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mesa/swrast/s_context.h | 203 | ||||
| -rw-r--r-- | src/mesa/swrast/s_span.h | 201 |
2 files changed, 204 insertions, 200 deletions
diff --git a/src/mesa/swrast/s_context.h b/src/mesa/swrast/s_context.h index c9f6ec6bb8f..b15a22dbf03 100644 --- a/src/mesa/swrast/s_context.h +++ b/src/mesa/swrast/s_context.h @@ -45,205 +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 span x/xStep values 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]; - -#if 0 - /* XXX rearrange and unify these arrays to so that we can - * index all fragment inputs with the FRAG_ATTRIB_* values: - */ - GLfloat attribs[FRAG_ATTRIB_MAX][MAX_WIDTH][4]; - /*OR*/ - typedef GLfloat (*array4f)[4]; - array4f attribs[FRAG_ATTRIB_MAX]; -#endif - - GLint x[MAX_WIDTH]; /**< fragment X coords */ - GLint y[MAX_WIDTH]; /**< fragment Y coords */ - GLuint z[MAX_WIDTH]; /**< fragment Z coords */ - GLuint index[MAX_WIDTH]; /**< Color indexes */ - 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]; /**< Fragment coverage for AA/smoothing */ - GLfloat varying[MAX_VARYING][MAX_WIDTH][4]; /**< For shaders */ - - /** This mask indicates which fragments are alive or culled */ - GLubyte mask[MAX_WIDTH]; -} SWspanarrays; - - -/** - * The SWspan 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 explicit arrays of values. The interpMask and arrayMask bitfields - * indicate which attributes are active interpolants or arrays, respectively. - * - * 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][4]; - GLfloat varStepX[MAX_VARYING][4]; - GLfloat varStepY[MAX_VARYING][4]; - - /* 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 1.4MB 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, @@ -270,7 +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) */ diff --git a/src/mesa/swrast/s_span.h b/src/mesa/swrast/s_span.h index c441106abae..7c514afb0b5 100644 --- a/src/mesa/swrast/s_span.h +++ b/src/mesa/swrast/s_span.h @@ -31,6 +31,207 @@ #include "swrast.h" +/** + * \defgroup SpanFlags SPAN_*-flags + * Bitflags used for interpMask and arrayMask fields below to indicate + * which interpolant values and fragment arrays are in use, respectively. + */ +/*@{*/ +#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 span x/xStep values 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]; + +#if 0 + /* XXX rearrange and unify these arrays to so that we can + * index all fragment inputs with the FRAG_ATTRIB_* values: + */ + GLfloat attribs[FRAG_ATTRIB_MAX][MAX_WIDTH][4]; + /*OR*/ + typedef GLfloat (*array4f)[4]; + array4f attribs[FRAG_ATTRIB_MAX]; +#endif + + GLint x[MAX_WIDTH]; /**< fragment X coords */ + GLint y[MAX_WIDTH]; /**< fragment Y coords */ + GLuint z[MAX_WIDTH]; /**< fragment Z coords */ + GLuint index[MAX_WIDTH]; /**< Color indexes */ + 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]; /**< Fragment coverage for AA/smoothing */ + GLfloat varying[MAX_VARYING][MAX_WIDTH][4]; /**< For shaders */ + + /** This mask indicates which fragments are alive or culled */ + GLubyte mask[MAX_WIDTH]; +} SWspanarrays; + + +/** + * The SWspan 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 explicit arrays of values. The interpMask and arrayMask bitfields + * indicate which attributes are active interpolants or arrays, respectively. + * + * 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][4]; + GLfloat varStepX[MAX_VARYING][4]; + GLfloat varStepY[MAX_VARYING][4]; + + /* 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 1.4MB 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) + + + extern void _swrast_span_default_z( GLcontext *ctx, SWspan *span ); |