diff options
Diffstat (limited to 'src/mesa/swrast/s_tritemp.h')
| -rw-r--r-- | src/mesa/swrast/s_tritemp.h | 631 |
1 files changed, 159 insertions, 472 deletions
diff --git a/src/mesa/swrast/s_tritemp.h b/src/mesa/swrast/s_tritemp.h index 891eaf6787a..8e3c5b5eebb 100644 --- a/src/mesa/swrast/s_tritemp.h +++ b/src/mesa/swrast/s_tritemp.h @@ -29,18 +29,16 @@ * * The following macros may be defined to indicate what auxillary information * must be interpolated across the triangle: - * INTERP_Z - if defined, interpolate vertex Z values - * INTERP_W - if defined, interpolate vertex W values - * INTERP_FOG - if defined, interpolate fog values - * INTERP_RGB - if defined, interpolate RGB values - * INTERP_ALPHA - if defined, interpolate Alpha values (req's INTERP_RGB) - * INTERP_SPEC - if defined, interpolate specular RGB values + * INTERP_Z - if defined, interpolate integer Z values + * INTERP_RGB - if defined, interpolate integer RGB values + * INTERP_ALPHA - if defined, interpolate integer Alpha values * INTERP_INDEX - if defined, interpolate color index values * INTERP_INT_TEX - if defined, interpolate integer ST texcoords - * (fast, simple 2-D texture mapping) + * (fast, simple 2-D texture mapping, without + * perspective correction) * INTERP_ATTRIBS - if defined, interpolate arbitrary attribs (texcoords, - * varying vars, etc) - * NOTE: OpenGL STRQ = Mesa STUV (R was taken for red) + * varying vars, etc) This also causes W to be + * computed for perspective correction). * * When one can directly address pixels in the color buffer the following * macros can be defined and used to compute pixel addresses during @@ -51,12 +49,11 @@ * Y==0 at bottom of screen and increases upward. * * Similarly, for direct depth buffer access, this type is used for depth - * buffer addressing: + * buffer addressing (see zRow): * DEPTH_TYPE - either GLushort or GLuint * * Optionally, one may provide one-time setup code per triangle: * SETUP_CODE - code which is to be executed once per triangle - * CLEANUP_CODE - code to execute at end of triangle * * The following macro MUST be defined: * RENDER_SPAN(span) - code to write a span of pixels. @@ -94,29 +91,6 @@ * SUB_PIXEL_BITS. */ -/* - * ColorTemp is used for intermediate color values. - */ -#if CHAN_TYPE == GL_FLOAT -#define ColorTemp GLfloat -#else -#define ColorTemp GLint /* same as GLfixed */ -#endif - - -/* - * Walk triangle edges with GLfixed or GLdouble - */ -#if TRIANGLE_WALK_DOUBLE -#define GLinterp GLdouble -#define InterpToInt(X) ((GLint) (X)) -#define INTERP_ONE 1.0 -#else -#define GLinterp GLfixed -#define InterpToInt(X) FixedToInt(X) -#define INTERP_ONE FIXED_ONE -#endif - /* * Some code we unfortunately need to prevent negative interpolated colors. @@ -141,15 +115,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, { typedef struct { const SWvertex *v0, *v1; /* Y(v0) < Y(v1) */ -#if TRIANGLE_WALK_DOUBLE - GLdouble dx; /* X(v1) - X(v0) */ - GLdouble dy; /* Y(v1) - Y(v0) */ - GLdouble dxdy; /* dx/dy */ - GLdouble adjy; /* adjust from v[0]->fy to fsy, scaled */ - GLdouble fsx; /* first sample point x coord */ - GLdouble fsy; - GLdouble fx0; /*X of lower endpoint */ -#else GLfloat dx; /* X(v1) - X(v0) */ GLfloat dy; /* Y(v1) - Y(v0) */ GLfloat dxdy; /* dx/dy */ @@ -158,7 +123,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, GLfixed fsx; /* first sample point x coord */ GLfixed fsy; GLfixed fx0; /* fixed pt X of lower endpoint */ -#endif GLint lines; /* number of lines to be sampled on this edge */ } EdgeT; @@ -173,16 +137,14 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, GLfloat oneOverArea; const SWvertex *vMin, *vMid, *vMax; /* Y(vMin)<=Y(vMid)<=Y(vMax) */ GLfloat bf = SWRAST_CONTEXT(ctx)->_BackfaceSign; -#if !TRIANGLE_WALK_DOUBLE const GLint snapMask = ~((FIXED_ONE / (1 << SUB_PIXEL_BITS)) - 1); /* for x/y coord snapping */ -#endif - GLinterp vMin_fx, vMin_fy, vMid_fx, vMid_fy, vMax_fx, vMax_fy; + GLfixed vMin_fx, vMin_fy, vMid_fx, vMid_fy, vMax_fx, vMax_fy; SWspan span; (void) swrast; - INIT_SPAN(span, GL_POLYGON, 0, 0, 0); + INIT_SPAN(span, GL_POLYGON); span.y = 0; /* silence warnings */ #ifdef INTERP_Z @@ -191,28 +153,27 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, /* printf("%s()\n", __FUNCTION__); - printf(" %g, %g, %g\n", v0->win[0], v0->win[1], v0->win[2]); - printf(" %g, %g, %g\n", v1->win[0], v1->win[1], v1->win[2]); - printf(" %g, %g, %g\n", v2->win[0], v2->win[1], v2->win[2]); - */ - /* - ASSERT(v0->win[2] >= 0.0); - ASSERT(v1->win[2] >= 0.0); - ASSERT(v2->win[2] >= 0.0); + printf(" %g, %g, %g\n", + v0->attrib[FRAG_ATTRIB_WPOS][0], + v0->attrib[FRAG_ATTRIB_WPOS][1], + v0->attrib[FRAG_ATTRIB_WPOS][2]); + printf(" %g, %g, %g\n", + v1->attrib[FRAG_ATTRIB_WPOS][0], + v1->attrib[FRAG_ATTRIB_WPOS][1], + v1->attrib[FRAG_ATTRIB_WPOS][2]); + printf(" %g, %g, %g\n", + v2->attrib[FRAG_ATTRIB_WPOS][0], + v2->attrib[FRAG_ATTRIB_WPOS][1], + v2->attrib[FRAG_ATTRIB_WPOS][2]); */ + /* Compute fixed point x,y coords w/ half-pixel offsets and snapping. * And find the order of the 3 vertices along the Y axis. */ { -#if TRIANGLE_WALK_DOUBLE - const GLdouble fy0 = v0->win[1] - 0.5; - const GLdouble fy1 = v1->win[1] - 0.5; - const GLdouble fy2 = v2->win[1] - 0.5; -#else - const GLfixed fy0 = FloatToFixed(v0->win[1] - 0.5F) & snapMask; - const GLfixed fy1 = FloatToFixed(v1->win[1] - 0.5F) & snapMask; - const GLfixed fy2 = FloatToFixed(v2->win[1] - 0.5F) & snapMask; -#endif + const GLfixed fy0 = FloatToFixed(v0->attrib[FRAG_ATTRIB_WPOS][1] - 0.5F) & snapMask; + const GLfixed fy1 = FloatToFixed(v1->attrib[FRAG_ATTRIB_WPOS][1] - 0.5F) & snapMask; + const GLfixed fy2 = FloatToFixed(v2->attrib[FRAG_ATTRIB_WPOS][1] - 0.5F) & snapMask; if (fy0 <= fy1) { if (fy1 <= fy2) { /* y0 <= y1 <= y2 */ @@ -252,15 +213,9 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, } /* fixed point X coords */ -#if TRIANGLE_WALK_DOUBLE - vMin_fx = vMin->win[0] + 0.5; - vMid_fx = vMid->win[0] + 0.5; - vMax_fx = vMax->win[0] + 0.5; -#else - vMin_fx = FloatToFixed(vMin->win[0] + 0.5F) & snapMask; - vMid_fx = FloatToFixed(vMid->win[0] + 0.5F) & snapMask; - vMax_fx = FloatToFixed(vMax->win[0] + 0.5F) & snapMask; -#endif + vMin_fx = FloatToFixed(vMin->attrib[FRAG_ATTRIB_WPOS][0] + 0.5F) & snapMask; + vMid_fx = FloatToFixed(vMid->attrib[FRAG_ATTRIB_WPOS][0] + 0.5F) & snapMask; + vMax_fx = FloatToFixed(vMax->attrib[FRAG_ATTRIB_WPOS][0] + 0.5F) & snapMask; } /* vertex/edge relationship */ @@ -269,29 +224,17 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, eBot.v0 = vMin; eBot.v1 = vMid; /* compute deltas for each edge: vertex[upper] - vertex[lower] */ -#if TRIANGLE_WALK_DOUBLE - eMaj.dx = vMax_fx - vMin_fx; - eMaj.dy = vMax_fy - vMin_fy; - eTop.dx = vMax_fx - vMid_fx; - eTop.dy = vMax_fy - vMid_fy; - eBot.dx = vMid_fx - vMin_fx; - eBot.dy = vMid_fy - vMin_fy; -#else eMaj.dx = FixedToFloat(vMax_fx - vMin_fx); eMaj.dy = FixedToFloat(vMax_fy - vMin_fy); eTop.dx = FixedToFloat(vMax_fx - vMid_fx); eTop.dy = FixedToFloat(vMax_fy - vMid_fy); eBot.dx = FixedToFloat(vMid_fx - vMin_fx); eBot.dy = FixedToFloat(vMid_fy - vMin_fy); -#endif /* compute area, oneOverArea and perform backface culling */ { -#if TRIANGLE_WALK_DOUBLE - const GLdouble area = eMaj.dx * eBot.dy - eBot.dx * eMaj.dy; -#else const GLfloat area = eMaj.dx * eBot.dy - eBot.dx * eMaj.dy; -#endif + if (IS_INF_OR_NAN(area) || area == 0.0F) return; @@ -306,70 +249,37 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, /* Edge setup. For a triangle strip these could be reused... */ { -#if TRIANGLE_WALK_DOUBLE - eMaj.fsy = CEILF(vMin_fy); - eMaj.lines = (GLint) CEILF(vMax_fy - eMaj.fsy); -#else eMaj.fsy = FixedCeil(vMin_fy); eMaj.lines = FixedToInt(FixedCeil(vMax_fy - eMaj.fsy)); -#endif if (eMaj.lines > 0) { eMaj.dxdy = eMaj.dx / eMaj.dy; -#if TRIANGLE_WALK_DOUBLE - eMaj.adjy = (eMaj.fsy - vMin_fy) * FIXED_SCALE; /* SCALED! */ - eMaj.fx0 = vMin_fx; - eMaj.fsx = eMaj.fx0 + (eMaj.adjy * eMaj.dxdy) / (GLdouble) FIXED_SCALE; -#else eMaj.fdxdy = SignedFloatToFixed(eMaj.dxdy); eMaj.adjy = (GLfloat) (eMaj.fsy - vMin_fy); /* SCALED! */ eMaj.fx0 = vMin_fx; eMaj.fsx = eMaj.fx0 + (GLfixed) (eMaj.adjy * eMaj.dxdy); -#endif } else { return; /*CULLED*/ } -#if TRIANGLE_WALK_DOUBLE - eTop.fsy = CEILF(vMid_fy); - eTop.lines = (GLint) CEILF(vMax_fy - eTop.fsy); -#else eTop.fsy = FixedCeil(vMid_fy); eTop.lines = FixedToInt(FixedCeil(vMax_fy - eTop.fsy)); -#endif if (eTop.lines > 0) { eTop.dxdy = eTop.dx / eTop.dy; -#if TRIANGLE_WALK_DOUBLE - eTop.adjy = (eTop.fsy - vMid_fy) * FIXED_SCALE; /* SCALED! */ - eTop.fx0 = vMid_fx; - eTop.fsx = eTop.fx0 + (eTop.adjy * eTop.dxdy) / (GLdouble) FIXED_SCALE; -#else eTop.fdxdy = SignedFloatToFixed(eTop.dxdy); eTop.adjy = (GLfloat) (eTop.fsy - vMid_fy); /* SCALED! */ eTop.fx0 = vMid_fx; eTop.fsx = eTop.fx0 + (GLfixed) (eTop.adjy * eTop.dxdy); -#endif } -#if TRIANGLE_WALK_DOUBLE - eBot.fsy = CEILF(vMin_fy); - eBot.lines = (GLint) CEILF(vMid_fy - eBot.fsy); -#else eBot.fsy = FixedCeil(vMin_fy); eBot.lines = FixedToInt(FixedCeil(vMid_fy - eBot.fsy)); -#endif if (eBot.lines > 0) { eBot.dxdy = eBot.dx / eBot.dy; -#if TRIANGLE_WALK_DOUBLE - eBot.adjy = (eBot.fsy - vMin_fy) * FIXED_SCALE; /* SCALED! */ - eBot.fx0 = vMin_fx; - eBot.fsx = eBot.fx0 + (eBot.adjy * eBot.dxdy) / (GLdouble) FIXED_SCALE; -#else eBot.fdxdy = SignedFloatToFixed(eBot.dxdy); eBot.adjy = (GLfloat) (eBot.fsy - vMin_fy); /* SCALED! */ eBot.fx0 = vMin_fx; eBot.fsx = eBot.fx0 + (GLfixed) (eBot.adjy * eBot.dxdy); -#endif } } @@ -427,10 +337,11 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_Z span.interpMask |= SPAN_Z; { - GLfloat eMaj_dz = vMax->win[2] - vMin->win[2]; - GLfloat eBot_dz = vMid->win[2] - vMin->win[2]; + GLfloat eMaj_dz = vMax->attrib[FRAG_ATTRIB_WPOS][2] - vMin->attrib[FRAG_ATTRIB_WPOS][2]; + GLfloat eBot_dz = vMid->attrib[FRAG_ATTRIB_WPOS][2] - vMin->attrib[FRAG_ATTRIB_WPOS][2]; span.attrStepX[FRAG_ATTRIB_WPOS][2] = oneOverArea * (eMaj_dz * eBot.dy - eMaj.dy * eBot_dz); - if (span.attrStepX[FRAG_ATTRIB_WPOS][2] > maxDepth || span.attrStepX[FRAG_ATTRIB_WPOS][2] < -maxDepth) { + if (span.attrStepX[FRAG_ATTRIB_WPOS][2] > maxDepth || + span.attrStepX[FRAG_ATTRIB_WPOS][2] < -maxDepth) { /* probably a sliver triangle */ span.attrStepX[FRAG_ATTRIB_WPOS][2] = 0.0; span.attrStepY[FRAG_ATTRIB_WPOS][2] = 0.0; @@ -444,42 +355,18 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, span.zStep = (GLint) span.attrStepX[FRAG_ATTRIB_WPOS][2]; } #endif -#ifdef INTERP_W - span.interpMask |= SPAN_W; - { - const GLfloat eMaj_dw = vMax->win[3] - vMin->win[3]; - const GLfloat eBot_dw = vMid->win[3] - vMin->win[3]; - span.attrStepX[FRAG_ATTRIB_WPOS][3] = oneOverArea * (eMaj_dw * eBot.dy - eMaj.dy * eBot_dw); - span.attrStepY[FRAG_ATTRIB_WPOS][3] = oneOverArea * (eMaj.dx * eBot_dw - eMaj_dw * eBot.dx); - } -#endif -#ifdef INTERP_FOG - span.interpMask |= SPAN_FOG; - { -# ifdef INTERP_W - const GLfloat wMax = vMax->win[3], wMin = vMin->win[3], wMid = vMid->win[3]; - const GLfloat eMaj_dfog = vMax->attrib[FRAG_ATTRIB_FOGC][0] * wMax - vMin->attrib[FRAG_ATTRIB_FOGC][0] * wMin; - const GLfloat eBot_dfog = vMid->attrib[FRAG_ATTRIB_FOGC][0] * wMid - vMin->attrib[FRAG_ATTRIB_FOGC][0] * wMin; -# else - const GLfloat eMaj_dfog = vMax->attrib[FRAG_ATTRIB_FOGC][0] - vMin->attrib[FRAG_ATTRIB_FOGC][0]; - const GLfloat eBot_dfog = vMid->attrib[FRAG_ATTRIB_FOGC][0] - vMin->attrib[FRAG_ATTRIB_FOGC][0]; -# endif - span.attrStepX[FRAG_ATTRIB_FOGC][0] = oneOverArea * (eMaj_dfog * eBot.dy - eMaj.dy * eBot_dfog); - span.attrStepY[FRAG_ATTRIB_FOGC][0] = oneOverArea * (eMaj.dx * eBot_dfog - eMaj_dfog * eBot.dx); - } -#endif #ifdef INTERP_RGB span.interpMask |= SPAN_RGBA; if (ctx->Light.ShadeModel == GL_SMOOTH) { - GLfloat eMaj_dr = (GLfloat) ((ColorTemp) vMax->color[RCOMP] - (ColorTemp) vMin->color[RCOMP]); - GLfloat eBot_dr = (GLfloat) ((ColorTemp) vMid->color[RCOMP] - (ColorTemp) vMin->color[RCOMP]); - GLfloat eMaj_dg = (GLfloat) ((ColorTemp) vMax->color[GCOMP] - (ColorTemp) vMin->color[GCOMP]); - GLfloat eBot_dg = (GLfloat) ((ColorTemp) vMid->color[GCOMP] - (ColorTemp) vMin->color[GCOMP]); - GLfloat eMaj_db = (GLfloat) ((ColorTemp) vMax->color[BCOMP] - (ColorTemp) vMin->color[BCOMP]); - GLfloat eBot_db = (GLfloat) ((ColorTemp) vMid->color[BCOMP] - (ColorTemp) vMin->color[BCOMP]); + GLfloat eMaj_dr = (GLfloat) (vMax->color[RCOMP] - vMin->color[RCOMP]); + GLfloat eBot_dr = (GLfloat) (vMid->color[RCOMP] - vMin->color[RCOMP]); + GLfloat eMaj_dg = (GLfloat) (vMax->color[GCOMP] - vMin->color[GCOMP]); + GLfloat eBot_dg = (GLfloat) (vMid->color[GCOMP] - vMin->color[GCOMP]); + GLfloat eMaj_db = (GLfloat) (vMax->color[BCOMP] - vMin->color[BCOMP]); + GLfloat eBot_db = (GLfloat) (vMid->color[BCOMP] - vMin->color[BCOMP]); # ifdef INTERP_ALPHA - GLfloat eMaj_da = (GLfloat) ((ColorTemp) vMax->color[ACOMP] - (ColorTemp) vMin->color[ACOMP]); - GLfloat eBot_da = (GLfloat) ((ColorTemp) vMid->color[ACOMP] - (ColorTemp) vMin->color[ACOMP]); + GLfloat eMaj_da = (GLfloat) (vMax->color[ACOMP] - vMin->color[ACOMP]); + GLfloat eBot_da = (GLfloat) (vMid->color[ACOMP] - vMin->color[ACOMP]); # endif span.attrStepX[FRAG_ATTRIB_COL0][0] = oneOverArea * (eMaj_dr * eBot.dy - eMaj.dy * eBot_dr); span.attrStepY[FRAG_ATTRIB_COL0][0] = oneOverArea * (eMaj.dx * eBot_dr - eMaj_dr * eBot.dx); @@ -487,23 +374,13 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, span.attrStepY[FRAG_ATTRIB_COL0][1] = oneOverArea * (eMaj.dx * eBot_dg - eMaj_dg * eBot.dx); span.attrStepX[FRAG_ATTRIB_COL0][2] = oneOverArea * (eMaj_db * eBot.dy - eMaj.dy * eBot_db); span.attrStepY[FRAG_ATTRIB_COL0][2] = oneOverArea * (eMaj.dx * eBot_db - eMaj_db * eBot.dx); -# if CHAN_TYPE == GL_FLOAT - span.redStep = span.attrStepX[FRAG_ATTRIB_COL0][0]; - span.greenStep = span.attrStepX[FRAG_ATTRIB_COL0][1]; - span.blueStep = span.attrStepX[FRAG_ATTRIB_COL0][2]; -# else span.redStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL0][0]); span.greenStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL0][1]); span.blueStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL0][2]); -# endif /* GL_FLOAT */ # ifdef INTERP_ALPHA span.attrStepX[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da); span.attrStepY[FRAG_ATTRIB_COL0][3] = oneOverArea * (eMaj.dx * eBot_da - eMaj_da * eBot.dx); -# if CHAN_TYPE == GL_FLOAT - span.alphaStep = span.attrStepX[FRAG_ATTRIB_COL0][3]; -# else span.alphaStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL0][3]); -# endif /* GL_FLOAT */ # endif /* INTERP_ALPHA */ } else { @@ -512,70 +389,20 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, span.attrStepX[FRAG_ATTRIB_COL0][0] = span.attrStepY[FRAG_ATTRIB_COL0][0] = 0.0F; span.attrStepX[FRAG_ATTRIB_COL0][1] = span.attrStepY[FRAG_ATTRIB_COL0][1] = 0.0F; span.attrStepX[FRAG_ATTRIB_COL0][2] = span.attrStepY[FRAG_ATTRIB_COL0][2] = 0.0F; -# if CHAN_TYPE == GL_FLOAT - span.redStep = 0.0F; - span.greenStep = 0.0F; - span.blueStep = 0.0F; -# else span.redStep = 0; span.greenStep = 0; span.blueStep = 0; -# endif /* GL_FLOAT */ # ifdef INTERP_ALPHA span.attrStepX[FRAG_ATTRIB_COL0][3] = span.attrStepY[FRAG_ATTRIB_COL0][3] = 0.0F; -# if CHAN_TYPE == GL_FLOAT - span.alphaStep = 0.0F; -# else span.alphaStep = 0; -# endif /* GL_FLOAT */ # endif } #endif /* INTERP_RGB */ -#ifdef INTERP_SPEC - span.interpMask |= SPAN_SPEC; - if (ctx->Light.ShadeModel == GL_SMOOTH) { - GLfloat eMaj_dsr = (GLfloat) ((ColorTemp) vMax->specular[RCOMP] - (ColorTemp) vMin->specular[RCOMP]); - GLfloat eBot_dsr = (GLfloat) ((ColorTemp) vMid->specular[RCOMP] - (ColorTemp) vMin->specular[RCOMP]); - GLfloat eMaj_dsg = (GLfloat) ((ColorTemp) vMax->specular[GCOMP] - (ColorTemp) vMin->specular[GCOMP]); - GLfloat eBot_dsg = (GLfloat) ((ColorTemp) vMid->specular[GCOMP] - (ColorTemp) vMin->specular[GCOMP]); - GLfloat eMaj_dsb = (GLfloat) ((ColorTemp) vMax->specular[BCOMP] - (ColorTemp) vMin->specular[BCOMP]); - GLfloat eBot_dsb = (GLfloat) ((ColorTemp) vMid->specular[BCOMP] - (ColorTemp) vMin->specular[BCOMP]); - span.attrStepX[FRAG_ATTRIB_COL1][0] = oneOverArea * (eMaj_dsr * eBot.dy - eMaj.dy * eBot_dsr); - span.attrStepY[FRAG_ATTRIB_COL1][0] = oneOverArea * (eMaj.dx * eBot_dsr - eMaj_dsr * eBot.dx); - span.attrStepX[FRAG_ATTRIB_COL1][1] = oneOverArea * (eMaj_dsg * eBot.dy - eMaj.dy * eBot_dsg); - span.attrStepY[FRAG_ATTRIB_COL1][1] = oneOverArea * (eMaj.dx * eBot_dsg - eMaj_dsg * eBot.dx); - span.attrStepX[FRAG_ATTRIB_COL1][2] = oneOverArea * (eMaj_dsb * eBot.dy - eMaj.dy * eBot_dsb); - span.attrStepY[FRAG_ATTRIB_COL1][2] = oneOverArea * (eMaj.dx * eBot_dsb - eMaj_dsb * eBot.dx); -# if CHAN_TYPE == GL_FLOAT - span.specRedStep = span.attrStepX[FRAG_ATTRIB_COL1][0]; - span.specGreenStep = span.attrStepX[FRAG_ATTRIB_COL1][1]; - span.specBlueStep = span.attrStepX[FRAG_ATTRIB_COL1][2]; -# else - span.specRedStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL1][0]); - span.specGreenStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL1][1]); - span.specBlueStep = SignedFloatToFixed(span.attrStepX[FRAG_ATTRIB_COL1][2]); -# endif - } - else { - span.attrStepX[FRAG_ATTRIB_COL1][0] = span.attrStepY[FRAG_ATTRIB_COL1][0] = 0.0F; - span.attrStepX[FRAG_ATTRIB_COL1][1] = span.attrStepY[FRAG_ATTRIB_COL1][1] = 0.0F; - span.attrStepX[FRAG_ATTRIB_COL1][2] = span.attrStepY[FRAG_ATTRIB_COL1][2] = 0.0F; -# if CHAN_TYPE == GL_FLOAT - span.specRedStep = 0.0F; - span.specGreenStep = 0.0F; - span.specBlueStep = 0.0F; -# else - span.specRedStep = 0; - span.specGreenStep = 0; - span.specBlueStep = 0; -# endif - } -#endif /* INTERP_SPEC */ #ifdef INTERP_INDEX span.interpMask |= SPAN_INDEX; if (ctx->Light.ShadeModel == GL_SMOOTH) { - GLfloat eMaj_di = vMax->index - vMin->index; - GLfloat eBot_di = vMid->index - vMin->index; + GLfloat eMaj_di = vMax->attrib[FRAG_ATTRIB_CI][0] - vMin->attrib[FRAG_ATTRIB_CI][0]; + GLfloat eBot_di = vMid->attrib[FRAG_ATTRIB_CI][0] - vMin->attrib[FRAG_ATTRIB_CI][0]; didx = oneOverArea * (eMaj_di * eBot.dy - eMaj.dy * eBot_di); didy = oneOverArea * (eMaj.dx * eBot_di - eMaj_di * eBot.dx); span.indexStep = SignedFloatToFixed(didx); @@ -587,7 +414,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, } #endif #ifdef INTERP_INT_TEX - span.interpMask |= SPAN_INT_TEXTURE; { GLfloat eMaj_ds = (vMax->attrib[FRAG_ATTRIB_TEX0][0] - vMin->attrib[FRAG_ATTRIB_TEX0][0]) * S_SCALE; GLfloat eBot_ds = (vMid->attrib[FRAG_ATTRIB_TEX0][0] - vMin->attrib[FRAG_ATTRIB_TEX0][0]) * S_SCALE; @@ -602,27 +428,31 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, } #endif #ifdef INTERP_ATTRIBS - span.interpMask |= (SPAN_TEXTURE | SPAN_VARYING); { - /* win[3] is 1/W */ - const GLfloat wMax = vMax->win[3], wMin = vMin->win[3], wMid = vMid->win[3]; + /* attrib[FRAG_ATTRIB_WPOS][3] is 1/W */ + const GLfloat wMax = vMax->attrib[FRAG_ATTRIB_WPOS][3]; + const GLfloat wMin = vMin->attrib[FRAG_ATTRIB_WPOS][3]; + const GLfloat wMid = vMid->attrib[FRAG_ATTRIB_WPOS][3]; + { + const GLfloat eMaj_dw = wMax - wMin; + const GLfloat eBot_dw = wMid - wMin; + span.attrStepX[FRAG_ATTRIB_WPOS][3] = oneOverArea * (eMaj_dw * eBot.dy - eMaj.dy * eBot_dw); + span.attrStepY[FRAG_ATTRIB_WPOS][3] = oneOverArea * (eMaj.dx * eBot_dw - eMaj_dw * eBot.dx); + } ATTRIB_LOOP_BEGIN - GLfloat eMaj_ds = vMax->attrib[attr][0] * wMax - vMin->attrib[attr][0] * wMin; - GLfloat eBot_ds = vMid->attrib[attr][0] * wMid - vMin->attrib[attr][0] * wMin; - GLfloat eMaj_dt = vMax->attrib[attr][1] * wMax - vMin->attrib[attr][1] * wMin; - GLfloat eBot_dt = vMid->attrib[attr][1] * wMid - vMin->attrib[attr][1] * wMin; - GLfloat eMaj_du = vMax->attrib[attr][2] * wMax - vMin->attrib[attr][2] * wMin; - GLfloat eBot_du = vMid->attrib[attr][2] * wMid - vMin->attrib[attr][2] * wMin; - GLfloat eMaj_dv = vMax->attrib[attr][3] * wMax - vMin->attrib[attr][3] * wMin; - GLfloat eBot_dv = vMid->attrib[attr][3] * wMid - vMin->attrib[attr][3] * wMin; - span.attrStepX[attr][0] = oneOverArea * (eMaj_ds * eBot.dy - eMaj.dy * eBot_ds); - span.attrStepY[attr][0] = oneOverArea * (eMaj.dx * eBot_ds - eMaj_ds * eBot.dx); - span.attrStepX[attr][1] = oneOverArea * (eMaj_dt * eBot.dy - eMaj.dy * eBot_dt); - span.attrStepY[attr][1] = oneOverArea * (eMaj.dx * eBot_dt - eMaj_dt * eBot.dx); - span.attrStepX[attr][2] = oneOverArea * (eMaj_du * eBot.dy - eMaj.dy * eBot_du); - span.attrStepY[attr][2] = oneOverArea * (eMaj.dx * eBot_du - eMaj_du * eBot.dx); - span.attrStepX[attr][3] = oneOverArea * (eMaj_dv * eBot.dy - eMaj.dy * eBot_dv); - span.attrStepY[attr][3] = oneOverArea * (eMaj.dx * eBot_dv - eMaj_dv * eBot.dx); + if (swrast->_InterpMode[attr] == GL_FLAT) { + ASSIGN_4V(span.attrStepX[attr], 0.0, 0.0, 0.0, 0.0); + ASSIGN_4V(span.attrStepY[attr], 0.0, 0.0, 0.0, 0.0); + } + else { + GLuint c; + for (c = 0; c < 4; c++) { + GLfloat eMaj_da = vMax->attrib[attr][c] * wMax - vMin->attrib[attr][c] * wMin; + GLfloat eBot_da = vMid->attrib[attr][c] * wMid - vMin->attrib[attr][c] * wMin; + span.attrStepX[attr][c] = oneOverArea * (eMaj_da * eBot.dy - eMaj.dy * eBot_da); + span.attrStepY[attr][c] = oneOverArea * (eMaj.dx * eBot_da - eMaj_da * eBot.dx); + } + } ATTRIB_LOOP_END } #endif @@ -676,9 +506,9 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, { GLint subTriangle; - GLinterp fxLeftEdge = 0, fxRightEdge = 0; - GLinterp fdxLeftEdge = 0, fdxRightEdge = 0; - GLinterp fError = 0, fdError = 0; + GLfixed fxLeftEdge = 0, fxRightEdge = 0; + GLfixed fdxLeftEdge = 0, fdxRightEdge = 0; + GLfixed fError = 0, fdError = 0; #ifdef PIXEL_ADDRESS PIXEL_TYPE *pRow = NULL; GLint dPRowOuter = 0, dPRowInner; /* offset in bytes */ @@ -693,24 +523,13 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, GLuint zLeft = 0; GLfixed fdzOuter = 0, fdzInner; #endif -#ifdef INTERP_W - GLfloat wLeft = 0, dwOuter = 0, dwInner; -#endif -#ifdef INTERP_FOG - GLfloat fogLeft = 0, dfogOuter = 0, dfogInner; -#endif #ifdef INTERP_RGB - ColorTemp rLeft = 0, fdrOuter = 0, fdrInner; - ColorTemp gLeft = 0, fdgOuter = 0, fdgInner; - ColorTemp bLeft = 0, fdbOuter = 0, fdbInner; + GLint rLeft = 0, fdrOuter = 0, fdrInner; + GLint gLeft = 0, fdgOuter = 0, fdgInner; + GLint bLeft = 0, fdbOuter = 0, fdbInner; #endif #ifdef INTERP_ALPHA - ColorTemp aLeft = 0, fdaOuter = 0, fdaInner; -#endif -#ifdef INTERP_SPEC - ColorTemp srLeft=0, dsrOuter=0, dsrInner; - ColorTemp sgLeft=0, dsgOuter=0, dsgInner; - ColorTemp sbLeft=0, dsbOuter=0, dsbInner; + GLint aLeft = 0, fdaOuter = 0, fdaInner; #endif #ifdef INTERP_INDEX GLfixed iLeft=0, diOuter=0, diInner; @@ -720,14 +539,9 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, GLfixed tLeft=0, dtOuter=0, dtInner; #endif #ifdef INTERP_ATTRIBS - GLfloat sLeft[FRAG_ATTRIB_MAX]; - GLfloat tLeft[FRAG_ATTRIB_MAX]; - GLfloat uLeft[FRAG_ATTRIB_MAX]; - GLfloat vLeft[FRAG_ATTRIB_MAX]; - GLfloat dsOuter[FRAG_ATTRIB_MAX], dsInner[FRAG_ATTRIB_MAX]; - GLfloat dtOuter[FRAG_ATTRIB_MAX], dtInner[FRAG_ATTRIB_MAX]; - GLfloat duOuter[FRAG_ATTRIB_MAX], duInner[FRAG_ATTRIB_MAX]; - GLfloat dvOuter[FRAG_ATTRIB_MAX], dvInner[FRAG_ATTRIB_MAX]; + GLfloat wLeft = 0, dwOuter = 0, dwInner; + GLfloat attrLeft[FRAG_ATTRIB_MAX][4]; + GLfloat daOuter[FRAG_ATTRIB_MAX][4], daInner[FRAG_ATTRIB_MAX][4]; #endif for (subTriangle=0; subTriangle<=1; subTriangle++) { @@ -774,30 +588,12 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, if (setupLeft && eLeft->lines > 0) { const SWvertex *vLower = eLeft->v0; -#if TRIANGLE_WALK_DOUBLE - const GLdouble fsy = eLeft->fsy; - const GLdouble fsx = eLeft->fsx; - const GLdouble fx = CEILF(fsx); - const GLdouble adjx = (fx - eLeft->fx0) * FIXED_SCALE; /* SCALED! */ -#else const GLfixed fsy = eLeft->fsy; const GLfixed fsx = eLeft->fsx; /* no fractional part */ const GLfixed fx = FixedCeil(fsx); /* no fractional part */ - const GLfixed adjx = (GLinterp) (fx - eLeft->fx0); /* SCALED! */ -#endif - const GLinterp adjy = (GLinterp) eLeft->adjy; /* SCALED! */ + const GLfixed adjx = (GLfixed) (fx - eLeft->fx0); /* SCALED! */ + const GLfixed adjy = (GLfixed) eLeft->adjy; /* SCALED! */ GLint idxOuter; -#if TRIANGLE_WALK_DOUBLE - GLdouble dxOuter; - - fError = fx - fsx - 1.0; - fxLeftEdge = fsx; - fdxLeftEdge = eLeft->dxdy; - dxOuter = FLOORF(fdxLeftEdge); - fdError = dxOuter - fdxLeftEdge + 1.0; - idxOuter = (GLint) dxOuter; - span.y = (GLint) fsy; -#else GLfloat dxOuter; GLfixed fdxOuter; @@ -809,7 +605,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, idxOuter = FixedToInt(fdxOuter); dxOuter = (GLfloat) idxOuter; span.y = FixedToInt(fsy); -#endif /* silence warnings on some compilers */ (void) dxOuter; @@ -819,7 +614,7 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef PIXEL_ADDRESS { - pRow = (PIXEL_TYPE *) PIXEL_ADDRESS(InterpToInt(fxLeftEdge), span.y); + pRow = (PIXEL_TYPE *) PIXEL_ADDRESS(FixedToInt(fxLeftEdge), span.y); dPRowOuter = -((int)BYTES_PER_ROW) + idxOuter * sizeof(PIXEL_TYPE); /* negative because Y=0 at bottom and increases upward */ } @@ -836,7 +631,7 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_Z { - GLfloat z0 = vLower->win[2]; + GLfloat z0 = vLower->attrib[FRAG_ATTRIB_WPOS][2]; if (depthBits <= 16) { /* interpolate fixed-pt values */ GLfloat tmp = (z0 * FIXED_SCALE @@ -846,129 +641,71 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, zLeft = (GLfixed) tmp; else zLeft = MAX_GLUINT / 2; - fdzOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_WPOS][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_WPOS][2]); + fdzOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_WPOS][2] + + dxOuter * span.attrStepX[FRAG_ATTRIB_WPOS][2]); } else { /* interpolate depth values w/out scaling */ zLeft = (GLuint) (z0 + span.attrStepX[FRAG_ATTRIB_WPOS][2] * FixedToFloat(adjx) + span.attrStepY[FRAG_ATTRIB_WPOS][2] * FixedToFloat(adjy)); - fdzOuter = (GLint) (span.attrStepY[FRAG_ATTRIB_WPOS][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_WPOS][2]); + fdzOuter = (GLint) (span.attrStepY[FRAG_ATTRIB_WPOS][2] + + dxOuter * span.attrStepX[FRAG_ATTRIB_WPOS][2]); } # ifdef DEPTH_TYPE zRow = (DEPTH_TYPE *) - zrb->GetPointer(ctx, zrb, InterpToInt(fxLeftEdge), span.y); + zrb->GetPointer(ctx, zrb, FixedToInt(fxLeftEdge), span.y); dZRowOuter = (ctx->DrawBuffer->Width + idxOuter) * sizeof(DEPTH_TYPE); # endif } #endif -#ifdef INTERP_W - wLeft = vLower->win[3] + (span.attrStepX[FRAG_ATTRIB_WPOS][3] * adjx + span.attrStepY[FRAG_ATTRIB_WPOS][3] * adjy) * (1.0F/FIXED_SCALE); - dwOuter = span.attrStepY[FRAG_ATTRIB_WPOS][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_WPOS][3]; -#endif -#ifdef INTERP_FOG -# ifdef INTERP_W - fogLeft = vLower->attrib[FRAG_ATTRIB_FOGC][0] * vLower->win[3] + (span.attrStepX[FRAG_ATTRIB_FOGC][0] * adjx + span.attrStepY[FRAG_ATTRIB_FOGC][0] * adjy) * (1.0F/FIXED_SCALE); -# else - fogLeft = vLower->attrib[FRAG_ATTRIB_FOGC][0] + (span.attrStepX[FRAG_ATTRIB_FOGC][0] * adjx + span.attrStepY[FRAG_ATTRIB_FOGC][0] * adjy) * (1.0F/FIXED_SCALE); -# endif - dfogOuter = span.attrStepY[FRAG_ATTRIB_FOGC][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_FOGC][0]; -#endif #ifdef INTERP_RGB if (ctx->Light.ShadeModel == GL_SMOOTH) { -# if CHAN_TYPE == GL_FLOAT - rLeft = vLower->color[RCOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][0] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][0] * adjy) * (1.0F / FIXED_SCALE); - gLeft = vLower->color[GCOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][1] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][1] * adjy) * (1.0F / FIXED_SCALE); - bLeft = vLower->color[BCOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][2] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][2] * adjy) * (1.0F / FIXED_SCALE); - fdrOuter = span.attrStepY[FRAG_ATTRIB_COL0][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][0]; - fdgOuter = span.attrStepY[FRAG_ATTRIB_COL0][1] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][1]; - fdbOuter = span.attrStepY[FRAG_ATTRIB_COL0][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][2]; -# else - rLeft = (GLint)(ChanToFixed(vLower->color[RCOMP]) + span.attrStepX[FRAG_ATTRIB_COL0][0] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][0] * adjy) + FIXED_HALF; - gLeft = (GLint)(ChanToFixed(vLower->color[GCOMP]) + span.attrStepX[FRAG_ATTRIB_COL0][1] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][1] * adjy) + FIXED_HALF; - bLeft = (GLint)(ChanToFixed(vLower->color[BCOMP]) + span.attrStepX[FRAG_ATTRIB_COL0][2] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][2] * adjy) + FIXED_HALF; - fdrOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][0]); - fdgOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][1] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][1]); - fdbOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][2]); -# endif + rLeft = (GLint)(ChanToFixed(vLower->color[RCOMP]) + + span.attrStepX[FRAG_ATTRIB_COL0][0] * adjx + + span.attrStepY[FRAG_ATTRIB_COL0][0] * adjy) + FIXED_HALF; + gLeft = (GLint)(ChanToFixed(vLower->color[GCOMP]) + + span.attrStepX[FRAG_ATTRIB_COL0][1] * adjx + + span.attrStepY[FRAG_ATTRIB_COL0][1] * adjy) + FIXED_HALF; + bLeft = (GLint)(ChanToFixed(vLower->color[BCOMP]) + + span.attrStepX[FRAG_ATTRIB_COL0][2] * adjx + + span.attrStepY[FRAG_ATTRIB_COL0][2] * adjy) + FIXED_HALF; + fdrOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][0] + + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][0]); + fdgOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][1] + + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][1]); + fdbOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][2] + + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][2]); # ifdef INTERP_ALPHA -# if CHAN_TYPE == GL_FLOAT - aLeft = vLower->color[ACOMP] + (span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + span.attrStepY[FRAG_ATTRIB_COL0][3] * adjy) * (1.0F / FIXED_SCALE); - fdaOuter = span.attrStepY[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]; -# else - aLeft = (GLint)(ChanToFixed(vLower->color[ACOMP]) + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjy) + FIXED_HALF; - fdaOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][3] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]); -# endif + aLeft = (GLint)(ChanToFixed(vLower->color[ACOMP]) + + span.attrStepX[FRAG_ATTRIB_COL0][3] * adjx + + span.attrStepY[FRAG_ATTRIB_COL0][3] * adjy) + FIXED_HALF; + fdaOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL0][3] + + dxOuter * span.attrStepX[FRAG_ATTRIB_COL0][3]); # endif } else { ASSERT(ctx->Light.ShadeModel == GL_FLAT); -# if CHAN_TYPE == GL_FLOAT - rLeft = v2->color[RCOMP]; - gLeft = v2->color[GCOMP]; - bLeft = v2->color[BCOMP]; - fdrOuter = fdgOuter = fdbOuter = 0.0F; -# else rLeft = ChanToFixed(v2->color[RCOMP]); gLeft = ChanToFixed(v2->color[GCOMP]); bLeft = ChanToFixed(v2->color[BCOMP]); fdrOuter = fdgOuter = fdbOuter = 0; -# endif # ifdef INTERP_ALPHA -# if CHAN_TYPE == GL_FLOAT - aLeft = v2->color[ACOMP]; - fdaOuter = 0.0F; -# else aLeft = ChanToFixed(v2->color[ACOMP]); fdaOuter = 0; -# endif # endif } #endif /* INTERP_RGB */ -#ifdef INTERP_SPEC - if (ctx->Light.ShadeModel == GL_SMOOTH) { -# if CHAN_TYPE == GL_FLOAT - srLeft = vLower->specular[RCOMP] + (span.attrStepX[FRAG_ATTRIB_COL1][0] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][0] * adjy) * (1.0F / FIXED_SCALE); - sgLeft = vLower->specular[GCOMP] + (span.attrStepX[FRAG_ATTRIB_COL1][1] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][1] * adjy) * (1.0F / FIXED_SCALE); - sbLeft = vLower->specular[BCOMP] + (span.attrStepX[FRAG_ATTRIB_COL1][2] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][2] * adjy) * (1.0F / FIXED_SCALE); - dsrOuter = span.attrStepY[FRAG_ATTRIB_COL1][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][0]; - dsgOuter = span.attrStepY[FRAG_ATTRIB_COL1][1] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][1]; - dsbOuter = span.attrStepY[FRAG_ATTRIB_COL1][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][2]; -# else - srLeft = (GLfixed) (ChanToFixed(vLower->specular[RCOMP]) + span.attrStepX[FRAG_ATTRIB_COL1][0] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][0] * adjy) + FIXED_HALF; - sgLeft = (GLfixed) (ChanToFixed(vLower->specular[GCOMP]) + span.attrStepX[FRAG_ATTRIB_COL1][1] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][1] * adjy) + FIXED_HALF; - sbLeft = (GLfixed) (ChanToFixed(vLower->specular[BCOMP]) + span.attrStepX[FRAG_ATTRIB_COL1][2] * adjx + span.attrStepY[FRAG_ATTRIB_COL1][2] * adjy) + FIXED_HALF; - dsrOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL1][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][0]); - dsgOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL1][1] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][1]); - dsbOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_COL1][2] + dxOuter * span.attrStepX[FRAG_ATTRIB_COL1][2]); -# endif - } - else { - ASSERT(ctx->Light.ShadeModel == GL_FLAT); -#if CHAN_TYPE == GL_FLOAT - srLeft = v2->specular[RCOMP]; - sgLeft = v2->specular[GCOMP]; - sbLeft = v2->specular[BCOMP]; - dsrOuter = dsgOuter = dsbOuter = 0.0F; -# else - srLeft = ChanToFixed(v2->specular[RCOMP]); - sgLeft = ChanToFixed(v2->specular[GCOMP]); - sbLeft = ChanToFixed(v2->specular[BCOMP]); - dsrOuter = dsgOuter = dsbOuter = 0; -# endif - } -#endif - #ifdef INTERP_INDEX if (ctx->Light.ShadeModel == GL_SMOOTH) { - iLeft = (GLfixed)(vLower->index * FIXED_SCALE + iLeft = (GLfixed)(vLower->attrib[FRAG_ATTRIB_CI][0] * FIXED_SCALE + didx * adjx + didy * adjy) + FIXED_HALF; diOuter = SignedFloatToFixed(didy + dxOuter * didx); } else { ASSERT(ctx->Light.ShadeModel == GL_FLAT); - iLeft = FloatToFixed(v2->index); + iLeft = FloatToFixed(v2->attrib[FRAG_ATTRIB_CI][0]); diOuter = 0; } #endif @@ -978,42 +715,50 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, s0 = vLower->attrib[FRAG_ATTRIB_TEX0][0] * S_SCALE; sLeft = (GLfixed)(s0 * FIXED_SCALE + span.attrStepX[FRAG_ATTRIB_TEX0][0] * adjx + span.attrStepY[FRAG_ATTRIB_TEX0][0] * adjy) + FIXED_HALF; - dsOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_TEX0][0] + dxOuter * span.attrStepX[FRAG_ATTRIB_TEX0][0]); + dsOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_TEX0][0] + + dxOuter * span.attrStepX[FRAG_ATTRIB_TEX0][0]); t0 = vLower->attrib[FRAG_ATTRIB_TEX0][1] * T_SCALE; tLeft = (GLfixed)(t0 * FIXED_SCALE + span.attrStepX[FRAG_ATTRIB_TEX0][1] * adjx + span.attrStepY[FRAG_ATTRIB_TEX0][1] * adjy) + FIXED_HALF; - dtOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_TEX0][1] + dxOuter * span.attrStepX[FRAG_ATTRIB_TEX0][1]); + dtOuter = SignedFloatToFixed(span.attrStepY[FRAG_ATTRIB_TEX0][1] + + dxOuter * span.attrStepX[FRAG_ATTRIB_TEX0][1]); } #endif #ifdef INTERP_ATTRIBS + { + const GLuint attr = FRAG_ATTRIB_WPOS; + wLeft = vLower->attrib[FRAG_ATTRIB_WPOS][3] + + (span.attrStepX[attr][3] * adjx + + span.attrStepY[attr][3] * adjy) * (1.0F/FIXED_SCALE); + dwOuter = span.attrStepY[attr][3] + dxOuter * span.attrStepX[attr][3]; + } ATTRIB_LOOP_BEGIN - const GLfloat invW = vLower->win[3]; - const GLfloat s0 = vLower->attrib[attr][0] * invW; - const GLfloat t0 = vLower->attrib[attr][1] * invW; - const GLfloat u0 = vLower->attrib[attr][2] * invW; - const GLfloat v0 = vLower->attrib[attr][3] * invW; - sLeft[attr] = s0 + (span.attrStepX[attr][0] * adjx + span.attrStepY[attr][0] * adjy) * (1.0F/FIXED_SCALE); - tLeft[attr] = t0 + (span.attrStepX[attr][1] * adjx + span.attrStepY[attr][1] * adjy) * (1.0F/FIXED_SCALE); - uLeft[attr] = u0 + (span.attrStepX[attr][2] * adjx + span.attrStepY[attr][2] * adjy) * (1.0F/FIXED_SCALE); - vLeft[attr] = v0 + (span.attrStepX[attr][3] * adjx + span.attrStepY[attr][3] * adjy) * (1.0F/FIXED_SCALE); - dsOuter[attr] = span.attrStepY[attr][0] + dxOuter * span.attrStepX[attr][0]; - dtOuter[attr] = span.attrStepY[attr][1] + dxOuter * span.attrStepX[attr][1]; - duOuter[attr] = span.attrStepY[attr][2] + dxOuter * span.attrStepX[attr][2]; - dvOuter[attr] = span.attrStepY[attr][3] + dxOuter * span.attrStepX[attr][3]; + const GLfloat invW = vLower->attrib[FRAG_ATTRIB_WPOS][3]; + if (swrast->_InterpMode[attr] == GL_FLAT) { + GLuint c; + for (c = 0; c < 4; c++) { + attrLeft[attr][c] = v2->attrib[attr][c] * invW; + daOuter[attr][c] = 0.0; + } + } + else { + GLuint c; + for (c = 0; c < 4; c++) { + const GLfloat a = vLower->attrib[attr][c] * invW; + attrLeft[attr][c] = a + ( span.attrStepX[attr][c] * adjx + + span.attrStepY[attr][c] * adjy) * (1.0F/FIXED_SCALE); + daOuter[attr][c] = span.attrStepY[attr][c] + dxOuter * span.attrStepX[attr][c]; + } + } ATTRIB_LOOP_END #endif } /*if setupLeft*/ if (setupRight && eRight->lines>0) { -#if TRIANGLE_WALK_DOUBLE - fxRightEdge = eRight->fsx; - fdxRightEdge = eRight->dxdy; -#else fxRightEdge = eRight->fsx - FIXED_EPSILON; fdxRightEdge = eRight->fdxdy; -#endif } if (lines==0) { @@ -1031,12 +776,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, # endif fdzInner = fdzOuter + span.zStep; #endif -#ifdef INTERP_W - dwInner = dwOuter + span.attrStepX[FRAG_ATTRIB_WPOS][3]; -#endif -#ifdef INTERP_FOG - dfogInner = dfogOuter + span.attrStepX[FRAG_ATTRIB_FOGC][0]; -#endif #ifdef INTERP_RGB fdrInner = fdrOuter + span.redStep; fdgInner = fdgOuter + span.greenStep; @@ -1045,11 +784,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_ALPHA fdaInner = fdaOuter + span.alphaStep; #endif -#ifdef INTERP_SPEC - dsrInner = dsrOuter + span.specRedStep; - dsgInner = dsgOuter + span.specGreenStep; - dsbInner = dsbOuter + span.specBlueStep; -#endif #ifdef INTERP_INDEX diInner = diOuter + span.indexStep; #endif @@ -1058,19 +792,20 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, dtInner = dtOuter + span.intTexStep[1]; #endif #ifdef INTERP_ATTRIBS + dwInner = dwOuter + span.attrStepX[FRAG_ATTRIB_WPOS][3]; ATTRIB_LOOP_BEGIN - dsInner[attr] = dsOuter[attr] + span.attrStepX[attr][0]; - dtInner[attr] = dtOuter[attr] + span.attrStepX[attr][1]; - duInner[attr] = duOuter[attr] + span.attrStepX[attr][2]; - dvInner[attr] = dvOuter[attr] + span.attrStepX[attr][3]; + GLuint c; + for (c = 0; c < 4; c++) { + daInner[attr][c] = daOuter[attr][c] + span.attrStepX[attr][c]; + } ATTRIB_LOOP_END #endif while (lines > 0) { /* initialize the span interpolants to the leftmost value */ /* ff = fixed-pt fragment */ - const GLint right = InterpToInt(fxRightEdge); - span.x = InterpToInt(fxLeftEdge); + const GLint right = FixedToInt(fxRightEdge); + span.x = FixedToInt(fxLeftEdge); if (right <= span.x) span.end = 0; else @@ -1079,12 +814,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_Z span.z = zLeft; #endif -#ifdef INTERP_W - span.attrStart[FRAG_ATTRIB_WPOS][3] = wLeft; -#endif -#ifdef INTERP_FOG - span.attrStart[FRAG_ATTRIB_FOGC][0] = fogLeft; -#endif #ifdef INTERP_RGB span.red = rLeft; span.green = gLeft; @@ -1093,11 +822,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_ALPHA span.alpha = aLeft; #endif -#ifdef INTERP_SPEC - span.specRed = srLeft; - span.specGreen = sgLeft; - span.specBlue = sbLeft; -#endif #ifdef INTERP_INDEX span.index = iLeft; #endif @@ -1107,11 +831,12 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #endif #ifdef INTERP_ATTRIBS + span.attrStart[FRAG_ATTRIB_WPOS][3] = wLeft; ATTRIB_LOOP_BEGIN - span.attrStart[attr][0] = sLeft[attr]; - span.attrStart[attr][1] = tLeft[attr]; - span.attrStart[attr][2] = uLeft[attr]; - span.attrStart[attr][3] = vLeft[attr]; + GLuint c; + for (c = 0; c < 4; c++) { + span.attrStart[attr][c] = attrLeft[attr][c]; + } ATTRIB_LOOP_END #endif @@ -1130,11 +855,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_ALPHA CLAMP_INTERPOLANT(alpha, alphaStep, len); #endif -#ifdef INTERP_SPEC - CLAMP_INTERPOLANT(specRed, specRedStep, len); - CLAMP_INTERPOLANT(specGreen, specGreenStep, len); - CLAMP_INTERPOLANT(specBlue, specBlueStep, len); -#endif #ifdef INTERP_INDEX CLAMP_INTERPOLANT(index, indexStep, len); #endif @@ -1157,7 +877,7 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, fError += fdError; if (fError >= 0) { - fError -= INTERP_ONE; + fError -= FIXED_ONE; #ifdef PIXEL_ADDRESS pRow = (PIXEL_TYPE *) ((GLubyte *) pRow + dPRowOuter); @@ -1168,12 +888,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, # endif zLeft += fdzOuter; #endif -#ifdef INTERP_W - wLeft += dwOuter; -#endif -#ifdef INTERP_FOG - fogLeft += dfogOuter; -#endif #ifdef INTERP_RGB rLeft += fdrOuter; gLeft += fdgOuter; @@ -1182,11 +896,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_ALPHA aLeft += fdaOuter; #endif -#ifdef INTERP_SPEC - srLeft += dsrOuter; - sgLeft += dsgOuter; - sbLeft += dsbOuter; -#endif #ifdef INTERP_INDEX iLeft += diOuter; #endif @@ -1195,11 +904,12 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, tLeft += dtOuter; #endif #ifdef INTERP_ATTRIBS + wLeft += dwOuter; ATTRIB_LOOP_BEGIN - sLeft[attr] += dsOuter[attr]; - tLeft[attr] += dtOuter[attr]; - uLeft[attr] += duOuter[attr]; - vLeft[attr] += dvOuter[attr]; + GLuint c; + for (c = 0; c < 4; c++) { + attrLeft[attr][c] += daOuter[attr][c]; + } ATTRIB_LOOP_END #endif } @@ -1213,12 +923,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, # endif zLeft += fdzInner; #endif -#ifdef INTERP_W - wLeft += dwInner; -#endif -#ifdef INTERP_FOG - fogLeft += dfogInner; -#endif #ifdef INTERP_RGB rLeft += fdrInner; gLeft += fdgInner; @@ -1227,11 +931,6 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #ifdef INTERP_ALPHA aLeft += fdaInner; #endif -#ifdef INTERP_SPEC - srLeft += dsrInner; - sgLeft += dsgInner; - sbLeft += dsbInner; -#endif #ifdef INTERP_INDEX iLeft += diInner; #endif @@ -1240,11 +939,12 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, tLeft += dtInner; #endif #ifdef INTERP_ATTRIBS + wLeft += dwInner; ATTRIB_LOOP_BEGIN - sLeft[attr] += dsInner[attr]; - tLeft[attr] += dtInner[attr]; - uLeft[attr] += duInner[attr]; - vLeft[attr] += dvInner[attr]; + GLuint c; + for (c = 0; c < 4; c++) { + attrLeft[attr][c] += daInner[attr][c]; + } ATTRIB_LOOP_END #endif } @@ -1253,14 +953,10 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, } /* for subTriangle */ } -#ifdef CLEANUP_CODE - CLEANUP_CODE -#endif } } #undef SETUP_CODE -#undef CLEANUP_CODE #undef RENDER_SPAN #undef PIXEL_TYPE @@ -1269,24 +965,15 @@ static void NAME(GLcontext *ctx, const SWvertex *v0, #undef DEPTH_TYPE #undef INTERP_Z -#undef INTERP_W -#undef INTERP_FOG #undef INTERP_RGB #undef INTERP_ALPHA -#undef INTERP_SPEC #undef INTERP_INDEX #undef INTERP_INT_TEX #undef INTERP_ATTRIBS -#undef TEX_UNIT_LOOP -#undef VARYING_LOOP #undef S_SCALE #undef T_SCALE #undef FixedToDepth -#undef ColorTemp -#undef GLinterp -#undef InterpToInt -#undef INTERP_ONE #undef NAME |