-/* $Id: s_triangle.c,v 1.35 2001/07/23 16:47:53 brianp Exp $ */
+/* $Id: s_triangle.c,v 1.63 2002/10/24 23:57:24 brianp Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 4.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2002 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"),
#include "glheader.h"
#include "context.h"
#include "colormac.h"
+#include "imports.h"
#include "macros.h"
-#include "mem.h"
#include "mmath.h"
#include "texformat.h"
#include "teximage.h"
#include "s_feedback.h"
#include "s_span.h"
#include "s_triangle.h"
-#include "s_trispan.h"
-
+/*
+ * Just used for feedback mode.
+ */
GLboolean _mesa_cull_triangle( GLcontext *ctx,
const SWvertex *v0,
const SWvertex *v1,
#define INTERP_Z 1
#define INTERP_FOG 1
-#define RENDER_SPAN( span ) \
- GLdepth zSpan[MAX_WIDTH]; \
- GLfloat fogSpan[MAX_WIDTH]; \
- GLuint i; \
- for (i = 0; i < span.count; i++) { \
- zSpan[i] = FixedToDepth(span.z); \
- span.z += span.zStep; \
- fogSpan[i] = span.fog; \
- span.fog += span.fogStep; \
- } \
- _mesa_write_monoindex_span(ctx, span.count, span.x, span.y, \
- zSpan, fogSpan, v0->index, NULL, GL_POLYGON );
+#define SETUP_CODE \
+ span.interpMask |= SPAN_INDEX; \
+ span.index = IntToFixed(v2->index); \
+ span.indexStep = 0;
+
+#define RENDER_SPAN( span ) _mesa_write_index_span(ctx, &span);
#include "s_tritemp.h"
}
#define INTERP_FOG 1
#define INTERP_INDEX 1
-#define RENDER_SPAN( span ) \
- GLdepth zSpan[MAX_WIDTH]; \
- GLfloat fogSpan[MAX_WIDTH]; \
- GLuint indexSpan[MAX_WIDTH]; \
- GLuint i; \
- for (i = 0; i < span.count; i++) { \
- zSpan[i] = FixedToDepth(span.z); \
- span.z += span.zStep; \
- indexSpan[i] = FixedToInt(span.index); \
- span.index += span.indexStep; \
- fogSpan[i] = span.fog; \
- span.fog += span.fogStep; \
- } \
- _mesa_write_index_span(ctx, span.count, span.x, span.y, \
- zSpan, fogSpan, indexSpan, NULL, GL_POLYGON);
+#define RENDER_SPAN( span ) _mesa_write_index_span(ctx, &span);
#include "s_tritemp.h"
}
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define RENDER_SPAN( span ) \
- GLdepth zSpan[MAX_WIDTH]; \
- GLfloat fogSpan[MAX_WIDTH]; \
- GLuint i; \
- for (i = 0; i < span.count; i++) { \
- zSpan[i] = FixedToDepth(span.z); \
- span.z += span.zStep; \
- fogSpan[i] = span.fog; \
- span.fog += span.fogStep; \
- } \
- _mesa_write_monocolor_span(ctx, span.count, span.x, span.y, zSpan, \
- fogSpan, v2->color, NULL, GL_POLYGON );
+#define SETUP_CODE \
+ ASSERT(ctx->Texture._EnabledUnits == 0); \
+ ASSERT(ctx->Light.ShadeModel==GL_FLAT); \
+ span.interpMask |= SPAN_RGBA; \
+ span.red = ChanToFixed(v2->color[0]); \
+ span.green = ChanToFixed(v2->color[1]); \
+ span.blue = ChanToFixed(v2->color[2]); \
+ span.alpha = ChanToFixed(v2->color[3]); \
+ span.redStep = 0; \
+ span.greenStep = 0; \
+ span.blueStep = 0; \
+ span.alphaStep = 0;
+
+#define RENDER_SPAN( span ) _mesa_write_rgba_span(ctx, &span);
#include "s_tritemp.h"
-
- ASSERT(!ctx->Texture._ReallyEnabled); /* texturing must be off */
- ASSERT(ctx->Light.ShadeModel==GL_FLAT);
}
#define INTERP_RGB 1
#define INTERP_ALPHA 1
-#define RENDER_SPAN( span ) \
- GLdepth zSpan[MAX_WIDTH]; \
- GLchan rgbaSpan[MAX_WIDTH][4]; \
- GLfloat fogSpan[MAX_WIDTH]; \
- GLuint i; \
- for (i = 0; i < span.count; i++) { \
- rgbaSpan[i][RCOMP] = FixedToChan(span.red); \
- rgbaSpan[i][GCOMP] = FixedToChan(span.green); \
- rgbaSpan[i][BCOMP] = FixedToChan(span.blue); \
- rgbaSpan[i][ACOMP] = FixedToChan(span.alpha); \
- span.red += span.redStep; \
- span.green += span.greenStep; \
- span.blue += span.blueStep; \
- span.alpha += span.alphaStep; \
- zSpan[i] = FixedToDepth(span.z); \
- span.z += span.zStep; \
- fogSpan[i] = span.fog; \
- span.fog += span.fogStep; \
- } \
- _mesa_write_rgba_span(ctx, span.count, span.x, span.y, \
- (CONST GLdepth *) zSpan, \
- fogSpan, rgbaSpan, NULL, GL_POLYGON);
+#define SETUP_CODE \
+ { \
+ /* texturing must be off */ \
+ ASSERT(ctx->Texture._EnabledUnits == 0); \
+ ASSERT(ctx->Light.ShadeModel==GL_SMOOTH); \
+ }
+
+#define RENDER_SPAN( span ) _mesa_write_rgba_span(ctx, &span);
#include "s_tritemp.h"
- ASSERT(!ctx->Texture._ReallyEnabled); /* texturing must be off */
- ASSERT(ctx->Light.ShadeModel==GL_SMOOTH);
}
#define SETUP_CODE \
SWcontext *swrast = SWRAST_CONTEXT(ctx); \
struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \
- GLint b = obj->BaseLevel; \
+ const GLint b = obj->BaseLevel; \
const GLfloat twidth = (GLfloat) obj->Image[b]->Width; \
const GLfloat theight = (GLfloat) obj->Image[b]->Height; \
const GLint twidth_log2 = obj->Image[b]->WidthLog2; \
}
#define RENDER_SPAN( span ) \
- GLchan rgbSpan[MAX_WIDTH][3]; \
GLuint i; \
span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \
span.intTex[1] -= FIXED_HALF; \
- for (i = 0; i < span.count; i++) { \
+ for (i = 0; i < span.end; i++) { \
GLint s = FixedToInt(span.intTex[0]) & smask; \
GLint t = FixedToInt(span.intTex[1]) & tmask; \
GLint pos = (t << twidth_log2) + s; \
pos = pos + pos + pos; /* multiply by 3 */ \
- rgbSpan[i][RCOMP] = texture[pos]; \
- rgbSpan[i][GCOMP] = texture[pos+1]; \
- rgbSpan[i][BCOMP] = texture[pos+2]; \
+ span.array->rgb[i][RCOMP] = texture[pos]; \
+ span.array->rgb[i][GCOMP] = texture[pos+1]; \
+ span.array->rgb[i][BCOMP] = texture[pos+2]; \
span.intTex[0] += span.intTexStep[0]; \
span.intTex[1] += span.intTexStep[1]; \
} \
- (*swrast->Driver.WriteRGBSpan)(ctx, span.count, span.x, span.y, \
- (CONST GLchan (*)[3]) rgbSpan, NULL );
+ (*swrast->Driver.WriteRGBSpan)(ctx, span.end, span.x, span.y, \
+ (CONST GLchan (*)[3]) span.array->rgb,\
+ NULL );
#include "s_tritemp.h"
}
#define SETUP_CODE \
SWcontext *swrast = SWRAST_CONTEXT(ctx); \
struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \
- GLint b = obj->BaseLevel; \
- GLfloat twidth = (GLfloat) obj->Image[b]->Width; \
- GLfloat theight = (GLfloat) obj->Image[b]->Height; \
- GLint twidth_log2 = obj->Image[b]->WidthLog2; \
+ const GLint b = obj->BaseLevel; \
+ const GLfloat twidth = (GLfloat) obj->Image[b]->Width; \
+ const GLfloat theight = (GLfloat) obj->Image[b]->Height; \
+ const GLint twidth_log2 = obj->Image[b]->WidthLog2; \
const GLchan *texture = (const GLchan *) obj->Image[b]->Data; \
- GLint smask = obj->Image[b]->Width - 1; \
- GLint tmask = obj->Image[b]->Height - 1; \
+ const GLint smask = obj->Image[b]->Width - 1; \
+ const GLint tmask = obj->Image[b]->Height - 1; \
if (!texture) { \
/* this shouldn't happen */ \
return; \
}
#define RENDER_SPAN( span ) \
- GLchan rgbSpan[MAX_WIDTH][3]; \
- GLubyte mask[MAX_WIDTH]; \
GLuint i; \
span.intTex[0] -= FIXED_HALF; /* off-by-one error? */ \
span.intTex[1] -= FIXED_HALF; \
- for (i = 0; i < span.count; i++) { \
+ for (i = 0; i < span.end; i++) { \
const GLdepth z = FixedToDepth(span.z); \
if (z < zRow[i]) { \
GLint s = FixedToInt(span.intTex[0]) & smask; \
GLint t = FixedToInt(span.intTex[1]) & tmask; \
GLint pos = (t << twidth_log2) + s; \
pos = pos + pos + pos; /* multiply by 3 */ \
- rgbSpan[i][RCOMP] = texture[pos]; \
- rgbSpan[i][GCOMP] = texture[pos+1]; \
- rgbSpan[i][BCOMP] = texture[pos+2]; \
+ span.array->rgb[i][RCOMP] = texture[pos]; \
+ span.array->rgb[i][GCOMP] = texture[pos+1]; \
+ span.array->rgb[i][BCOMP] = texture[pos+2]; \
zRow[i] = z; \
- mask[i] = 1; \
+ span.array->mask[i] = 1; \
} \
else { \
- mask[i] = 0; \
+ span.array->mask[i] = 0; \
} \
span.intTex[0] += span.intTexStep[0]; \
span.intTex[1] += span.intTexStep[1]; \
span.z += span.zStep; \
} \
- (*swrast->Driver.WriteRGBSpan)(ctx, span.count, span.x, span.y, \
- (CONST GLchan (*)[3]) rgbSpan, mask );
+ (*swrast->Driver.WriteRGBSpan)(ctx, span.end, span.x, span.y, \
+ (CONST GLchan (*)[3]) span.array->rgb,\
+ span.array->mask );
#include "s_tritemp.h"
}
GLint smask, tmask;
GLint twidth_log2;
const GLchan *texture;
- GLchan er, eg, eb, ea;
+ GLfixed er, eg, eb, ea;
GLint tbytesline, tsize;
- GLint fixedToDepthShift;
};
-static void
-affine_span(GLcontext *ctx, struct triangle_span *span,
+
+/* This function can handle GL_NEAREST or GL_LINEAR sampling of 2D RGB or RGBA
+ * textures with GL_REPLACE, GL_MODULATE, GL_BLEND, GL_DECAL or GL_ADD
+ * texture env modes.
+ */
+static INLINE void
+affine_span(GLcontext *ctx, struct sw_span *span,
struct affine_info *info)
{
- GLchan tmp_col[4];
+ GLchan sample[4]; /* the filtered texture sample */
/* Instead of defining a function for each mode, a test is done
* between the outer and inner loops. This is to reduce code size
*/
#define NEAREST_RGB \
- tmp_col[RCOMP] = tex00[RCOMP]; \
- tmp_col[GCOMP] = tex00[GCOMP]; \
- tmp_col[BCOMP] = tex00[BCOMP]; \
- tmp_col[ACOMP] = CHAN_MAX
+ sample[RCOMP] = tex00[RCOMP]; \
+ sample[GCOMP] = tex00[GCOMP]; \
+ sample[BCOMP] = tex00[BCOMP]; \
+ sample[ACOMP] = CHAN_MAX
#define LINEAR_RGB \
- tmp_col[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
+ sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \
- tmp_col[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
+ sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \
- tmp_col[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
+ sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \
- tmp_col[ACOMP] = CHAN_MAX
+ sample[ACOMP] = CHAN_MAX
-#define NEAREST_RGBA COPY_CHAN4(tmp_col, tex00)
+#define NEAREST_RGBA COPY_CHAN4(sample, tex00)
#define LINEAR_RGBA \
- tmp_col[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
+ sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT;\
- tmp_col[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
+ sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT;\
- tmp_col[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
+ sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT;\
- tmp_col[ACOMP] = (ti * (si * tex00[3] + sf * tex01[3]) + \
+ sample[ACOMP] = (ti * (si * tex00[3] + sf * tex01[3]) + \
tf * (si * tex10[3] + sf * tex11[3])) >> 2 * FIXED_SHIFT
-#define MODULATE \
- dest[RCOMP] = span->red * (tmp_col[RCOMP] + 1u) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = span->green * (tmp_col[GCOMP] + 1u) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = span->blue * (tmp_col[BCOMP] + 1u) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = span->alpha * (tmp_col[ACOMP] + 1u) >> (FIXED_SHIFT + 8)
+#define MODULATE \
+ dest[RCOMP] = span->red * (sample[RCOMP] + 1u) >> (FIXED_SHIFT + 8); \
+ dest[GCOMP] = span->green * (sample[GCOMP] + 1u) >> (FIXED_SHIFT + 8); \
+ dest[BCOMP] = span->blue * (sample[BCOMP] + 1u) >> (FIXED_SHIFT + 8); \
+ dest[ACOMP] = span->alpha * (sample[ACOMP] + 1u) >> (FIXED_SHIFT + 8)
#define DECAL \
- dest[RCOMP] = ((CHAN_MAX - tmp_col[ACOMP]) * span->red + \
- ((tmp_col[ACOMP] + 1) * tmp_col[RCOMP] << FIXED_SHIFT)) \
+ dest[RCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->red + \
+ ((sample[ACOMP] + 1) * sample[RCOMP] << FIXED_SHIFT)) \
>> (FIXED_SHIFT + 8); \
- dest[GCOMP] = ((CHAN_MAX - tmp_col[ACOMP]) * span->green + \
- ((tmp_col[ACOMP] + 1) * tmp_col[GCOMP] << FIXED_SHIFT)) \
+ dest[GCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->green + \
+ ((sample[ACOMP] + 1) * sample[GCOMP] << FIXED_SHIFT)) \
>> (FIXED_SHIFT + 8); \
- dest[BCOMP] = ((CHAN_MAX - tmp_col[ACOMP]) * span->blue + \
- ((tmp_col[ACOMP] + 1) * tmp_col[BCOMP] << FIXED_SHIFT)) \
+ dest[BCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->blue + \
+ ((sample[ACOMP] + 1) * sample[BCOMP] << FIXED_SHIFT)) \
>> (FIXED_SHIFT + 8); \
dest[ACOMP] = FixedToInt(span->alpha)
#define BLEND \
- dest[RCOMP] = ((CHAN_MAX - tmp_col[RCOMP]) * span->red \
- + (tmp_col[RCOMP] + 1) * info->er) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = ((CHAN_MAX - tmp_col[GCOMP]) * span->green \
- + (tmp_col[GCOMP] + 1) * info->eg) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = ((CHAN_MAX - tmp_col[BCOMP]) * span->blue \
- + (tmp_col[BCOMP] + 1) * info->eb) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = span->alpha * (tmp_col[ACOMP] + 1) >> (FIXED_SHIFT + 8)
+ dest[RCOMP] = ((CHAN_MAX - sample[RCOMP]) * span->red \
+ + (sample[RCOMP] + 1) * info->er) >> (FIXED_SHIFT + 8); \
+ dest[GCOMP] = ((CHAN_MAX - sample[GCOMP]) * span->green \
+ + (sample[GCOMP] + 1) * info->eg) >> (FIXED_SHIFT + 8); \
+ dest[BCOMP] = ((CHAN_MAX - sample[BCOMP]) * span->blue \
+ + (sample[BCOMP] + 1) * info->eb) >> (FIXED_SHIFT + 8); \
+ dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8)
-#define REPLACE COPY_CHAN4(dest, tmp_col)
-
-#define I2CHAN_CLAMP(I) (GLchan) ((I) & CHAN_MAX)
- /* equivalent to '(GLchan) MIN2((I),CHAN_MAX)' */
+#define REPLACE COPY_CHAN4(dest, sample)
#define ADD \
- dest[RCOMP] = MIN2(((span->red << 8) + \
- (tmp_col[RCOMP] + 1) * info->er) \
- >> (FIXED_SHIFT + 8), CHAN_MAX); \
- dest[GCOMP] = MIN2(((span->green << 8) + \
- (tmp_col[GCOMP] + 1) * info->eg) \
- >> (FIXED_SHIFT + 8), CHAN_MAX); \
- dest[RCOMP] = MIN2(((span->blue << 8) + \
- (tmp_col[BCOMP] + 1) * info->eb) \
- >> (FIXED_SHIFT + 8), CHAN_MAX); \
- dest[ACOMP] = span->alpha * (tmp_col[ACOMP] + 1) >> (FIXED_SHIFT + 8)
+ { \
+ GLint rSum = FixedToInt(span->red) + (GLint) sample[RCOMP]; \
+ GLint gSum = FixedToInt(span->green) + (GLint) sample[GCOMP]; \
+ GLint bSum = FixedToInt(span->blue) + (GLint) sample[BCOMP]; \
+ dest[RCOMP] = MIN2(rSum, CHAN_MAX); \
+ dest[GCOMP] = MIN2(gSum, CHAN_MAX); \
+ dest[BCOMP] = MIN2(bSum, CHAN_MAX); \
+ dest[ACOMP] = span->alpha * (sample[ACOMP] + 1) >> (FIXED_SHIFT + 8); \
+ }
/* shortcuts */
-#define NEAREST_RGB_REPLACE NEAREST_RGB;REPLACE
+#define NEAREST_RGB_REPLACE \
+ NEAREST_RGB; \
+ dest[0] = sample[0]; \
+ dest[1] = sample[1]; \
+ dest[2] = sample[2]; \
+ dest[3] = FixedToInt(span->alpha);
#define NEAREST_RGBA_REPLACE COPY_CHAN4(dest, tex00)
#define SPAN_NEAREST(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+ for (i = 0; i < span->end; i++) { \
/* Isn't it necessary to use FixedFloor below?? */ \
GLint s = FixedToInt(span->intTex[0]) & info->smask; \
GLint t = FixedToInt(span->intTex[1]) & info->tmask; \
GLint pos = (t << info->twidth_log2) + s; \
const GLchan *tex00 = info->texture + COMP * pos; \
- zspan[i] = FixedToDepth(span->z); \
- fogspan[i] = span->fog; \
DO_TEX; \
- span->fog += span->fogStep; \
- span->z += span->zStep; \
span->red += span->redStep; \
span->green += span->greenStep; \
span->blue += span->blueStep; \
}
#define SPAN_LINEAR(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+ for (i = 0; i < span->end; i++) { \
/* Isn't it necessary to use FixedFloor below?? */ \
GLint s = FixedToInt(span->intTex[0]) & info->smask; \
GLint t = FixedToInt(span->intTex[1]) & info->tmask; \
tex01 -= info->tbytesline; \
tex11 -= info->tbytesline; \
} \
- zspan[i] = FixedToDepth(span->z); \
- fogspan[i] = span->fog; \
DO_TEX; \
- span->fog += span->fogStep; \
- span->z += span->zStep; \
span->red += span->redStep; \
span->green += span->greenStep; \
span->blue += span->blueStep; \
dest += 4; \
}
-#define FixedToDepth(F) ((F) >> fixedToDepthShift)
GLuint i;
- GLdepth zspan[MAX_WIDTH];
- GLfloat fogspan[MAX_WIDTH];
- GLchan rgba[MAX_WIDTH][4];
- GLchan *dest = rgba[0];
- const GLint fixedToDepthShift = info->fixedToDepthShift;
+ GLchan *dest = span->array->rgba[0];
span->intTex[0] -= FIXED_HALF;
span->intTex[1] -= FIXED_HALF;
}
break;
}
- _mesa_write_rgba_span(ctx, span->count, span->x, span->y,
- zspan, fogspan, rgba, NULL, GL_POLYGON);
+ span->interpMask &= ~SPAN_RGBA;
+ ASSERT(span->arrayMask & SPAN_RGBA);
+ _mesa_write_rgba_span(ctx, span);
#undef SPAN_NEAREST
#undef SPAN_LINEAR
-#undef FixedToDepth
}
struct affine_info info; \
struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
struct gl_texture_object *obj = unit->Current2D; \
- GLint b = obj->BaseLevel; \
- GLfloat twidth = (GLfloat) obj->Image[b]->Width; \
- GLfloat theight = (GLfloat) obj->Image[b]->Height; \
- info.fixedToDepthShift = ctx->Visual.depthBits <= 16 ? FIXED_SHIFT : 0;\
+ const GLint b = obj->BaseLevel; \
+ const GLfloat twidth = (GLfloat) obj->Image[b]->Width; \
+ const GLfloat theight = (GLfloat) obj->Image[b]->Height; \
info.texture = (const GLchan *) obj->Image[b]->Data; \
info.twidth_log2 = obj->Image[b]->WidthLog2; \
info.smask = obj->Image[b]->Width - 1; \
info.format = obj->Image[b]->Format; \
info.filter = obj->MinFilter; \
info.envmode = unit->EnvMode; \
+ span.arrayMask |= SPAN_RGBA; \
\
if (info.envmode == GL_BLEND) { \
/* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \
- info.er = FloatToFixed(unit->EnvColor[RCOMP]); \
- info.eg = FloatToFixed(unit->EnvColor[GCOMP]); \
- info.eb = FloatToFixed(unit->EnvColor[BCOMP]); \
- info.ea = FloatToFixed(unit->EnvColor[ACOMP]); \
+ info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \
+ info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \
+ info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \
+ info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \
} \
if (!info.texture) { \
/* this shouldn't happen */ \
} \
info.tsize = obj->Image[b]->Height * info.tbytesline;
-#define RENDER_SPAN( span ) \
- if (ctx->Light.ShadeModel == GL_FLAT) { \
- span.red = IntToFixed(v2->color[RCOMP]); \
- span.green = IntToFixed(v2->color[GCOMP]); \
- span.blue = IntToFixed(v2->color[BCOMP]); \
- span.alpha = IntToFixed(v2->color[ACOMP]); \
- } \
- affine_span(ctx, &span, &info);
+#define RENDER_SPAN( span ) affine_span(ctx, &span, &info);
#include "s_tritemp.h"
GLint smask, tmask;
GLint twidth_log2;
const GLchan *texture;
- GLchan er, eg, eb, ea;
+ GLfixed er, eg, eb, ea; /* texture env color */
GLint tbytesline, tsize;
- GLint fixedToDepthShift;
};
-static void
-fast_persp_span(GLcontext *ctx, struct triangle_span *span,
+static INLINE void
+fast_persp_span(GLcontext *ctx, struct sw_span *span,
struct persp_info *info)
{
- GLchan tmp_col[4];
+ GLchan sample[4]; /* the filtered texture sample */
/* Instead of defining a function for each mode, a test is done
* between the outer and inner loops. This is to reduce code size
* unused variables (for instance tf,sf,ti,si in case of GL_NEAREST).
*/
#define SPAN_NEAREST(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+ for (i = 0; i < span->end; i++) { \
GLdouble invQ = tex_coord[2] ? \
(1.0 / tex_coord[2]) : 1.0; \
- GLfloat s_tmp = tex_coord[0] * invQ; \
- GLfloat t_tmp = tex_coord[1] * invQ; \
+ GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \
+ GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \
GLint s = IFLOOR(s_tmp) & info->smask; \
GLint t = IFLOOR(t_tmp) & info->tmask; \
GLint pos = (t << info->twidth_log2) + s; \
const GLchan *tex00 = info->texture + COMP * pos; \
- zspan[i] = FixedToDepth(span->z); \
- fogspan[i] = span->fog; \
DO_TEX; \
- span->fog += span->fogStep; \
- span->z += span->zStep; \
span->red += span->redStep; \
span->green += span->greenStep; \
span->blue += span->blueStep; \
}
#define SPAN_LINEAR(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+ for (i = 0; i < span->end; i++) { \
GLdouble invQ = tex_coord[2] ? \
(1.0 / tex_coord[2]) : 1.0; \
- GLfloat s_tmp = tex_coord[0] * invQ; \
- GLfloat t_tmp = tex_coord[1] * invQ; \
+ GLfloat s_tmp = (GLfloat) (tex_coord[0] * invQ); \
+ GLfloat t_tmp = (GLfloat) (tex_coord[1] * invQ); \
GLfixed s_fix = FloatToFixed(s_tmp) - FIXED_HALF; \
GLfixed t_fix = FloatToFixed(t_tmp) - FIXED_HALF; \
GLint s = FixedToInt(FixedFloor(s_fix)) & info->smask; \
tex01 -= info->tbytesline; \
tex11 -= info->tbytesline; \
} \
- zspan[i] = FixedToDepth(span->z); \
- fogspan[i] = span->fog; \
DO_TEX; \
- span->fog += span->fogStep; \
- span->z += span->zStep; \
span->red += span->redStep; \
span->green += span->greenStep; \
span->blue += span->blueStep; \
dest += 4; \
}
-#define FixedToDepth(F) ((F) >> fixedToDepthShift)
-
GLuint i;
- GLdepth zspan[MAX_WIDTH];
GLfloat tex_coord[3], tex_step[3];
- GLfloat fogspan[MAX_WIDTH];
- GLchan rgba[MAX_WIDTH][4];
- GLchan *dest = rgba[0];
- const GLint fixedToDepthShift = info->fixedToDepthShift;
-
- tex_coord[0] = span->tex[0][0] * (info->smask + 1),
- tex_step[0] = span->texStep[0][0] * (info->smask + 1);
- tex_coord[1] = span->tex[0][1] * (info->tmask + 1),
- tex_step[1] = span->texStep[0][1] * (info->tmask + 1);
+ GLchan *dest = span->array->rgba[0];
+
+ tex_coord[0] = span->tex[0][0] * (info->smask + 1);
+ tex_step[0] = span->texStepX[0][0] * (info->smask + 1);
+ tex_coord[1] = span->tex[0][1] * (info->tmask + 1);
+ tex_step[1] = span->texStepX[0][1] * (info->tmask + 1);
/* span->tex[0][2] only if 3D-texturing, here only 2D */
- tex_coord[2] = span->tex[0][3],
- tex_step[2] = span->texStep[0][3];
+ tex_coord[2] = span->tex[0][3];
+ tex_step[2] = span->texStepX[0][3];
switch (info->filter) {
case GL_NEAREST:
}
break;
}
- /* This does not seem to be necessary, but I don't know !! */
- /* span->tex[0][0] = tex_coord[0] / (info->smask + 1),
- span->tex[0][1] = tex_coord[1] / (info->tmask + 1),*/
- /* span->tex[0][2] only if 3D-texturing, here only 2D */
- /* span->tex[0][3] = tex_coord[2]; */
- _mesa_write_rgba_span(ctx, span->count, span->x, span->y,
- zspan, fogspan, rgba, NULL, GL_POLYGON);
-
+ ASSERT(span->arrayMask & SPAN_RGBA);
+ _mesa_write_rgba_span(ctx, span);
#undef SPAN_NEAREST
#undef SPAN_LINEAR
-#undef FixedToDepth
}
#define SETUP_CODE \
struct persp_info info; \
- struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
- struct gl_texture_object *obj = unit->Current2D; \
- GLint b = obj->BaseLevel; \
- info.fixedToDepthShift = ctx->Visual.depthBits <= 16 ? FIXED_SHIFT : 0;\
+ const struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
+ const struct gl_texture_object *obj = unit->Current2D; \
+ const GLint b = obj->BaseLevel; \
info.texture = (const GLchan *) obj->Image[b]->Data; \
info.twidth_log2 = obj->Image[b]->WidthLog2; \
info.smask = obj->Image[b]->Width - 1; \
\
if (info.envmode == GL_BLEND) { \
/* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \
- info.er = FloatToFixed(unit->EnvColor[RCOMP]); \
- info.eg = FloatToFixed(unit->EnvColor[GCOMP]); \
- info.eb = FloatToFixed(unit->EnvColor[BCOMP]); \
- info.ea = FloatToFixed(unit->EnvColor[ACOMP]); \
+ info.er = FloatToFixed(unit->EnvColor[RCOMP] * CHAN_MAXF); \
+ info.eg = FloatToFixed(unit->EnvColor[GCOMP] * CHAN_MAXF); \
+ info.eb = FloatToFixed(unit->EnvColor[BCOMP] * CHAN_MAXF); \
+ info.ea = FloatToFixed(unit->EnvColor[ACOMP] * CHAN_MAXF); \
} \
if (!info.texture) { \
/* this shouldn't happen */ \
} \
info.tsize = obj->Image[b]->Height * info.tbytesline;
-#define RENDER_SPAN( span ) \
- if (ctx->Light.ShadeModel == GL_FLAT) { \
- span.red = IntToFixed(v2->color[RCOMP]); \
- span.green = IntToFixed(v2->color[GCOMP]); \
- span.blue = IntToFixed(v2->color[BCOMP]); \
- span.alpha = IntToFixed(v2->color[ACOMP]); \
- } \
+#define RENDER_SPAN( span ) \
+ span.interpMask &= ~SPAN_RGBA; \
+ span.arrayMask |= SPAN_RGBA; \
fast_persp_span(ctx, &span, &info);
#include "s_tritemp.h"
#endif /* CHAN_BITS != GL_FLOAT */
-
-/*
- * Generate arrays of fragment colors, z, fog, texcoords, etc from a
- * triangle span object. Then call the span/fragment processsing
- * functions in s_span.[ch]. This is used by a bunch of the textured
- * triangle functions.
- */
-static void
-rasterize_span(GLcontext *ctx, const struct triangle_span *span)
-{
- DEFMARRAY(GLchan, rgba, MAX_WIDTH, 4);
- DEFMARRAY(GLchan, spec, MAX_WIDTH, 4);
- DEFARRAY(GLuint, index, MAX_WIDTH);
- DEFARRAY(GLuint, z, MAX_WIDTH);
- DEFARRAY(GLfloat, fog, MAX_WIDTH);
- DEFARRAY(GLfloat, sTex, MAX_WIDTH);
- DEFARRAY(GLfloat, tTex, MAX_WIDTH);
- DEFARRAY(GLfloat, rTex, MAX_WIDTH);
- DEFARRAY(GLfloat, lambda, MAX_WIDTH);
- DEFMARRAY(GLfloat, msTex, MAX_TEXTURE_UNITS, MAX_WIDTH);
- DEFMARRAY(GLfloat, mtTex, MAX_TEXTURE_UNITS, MAX_WIDTH);
- DEFMARRAY(GLfloat, mrTex, MAX_TEXTURE_UNITS, MAX_WIDTH);
- DEFMARRAY(GLfloat, mLambda, MAX_TEXTURE_UNITS, MAX_WIDTH);
-
- CHECKARRAY(rgba, return);
- CHECKARRAY(spec, return);
- CHECKARRAY(index, return);
- CHECKARRAY(z, return);
- CHECKARRAY(fog, return);
- CHECKARRAY(sTex, return);
- CHECKARRAY(tTex, return);
- CHECKARRAY(rTex, return);
- CHECKARRAY(lambda, return);
- CHECKARRAY(msTex, return);
- CHECKARRAY(mtTex, return);
- CHECKARRAY(mrTex, return);
- CHECKARRAY(mLambda, return);
-
- if (span->activeMask & SPAN_RGBA) {
-#if CHAN_TYPE == GL_FLOAT
- GLfloat r = span->red;
- GLfloat g = span->green;
- GLfloat b = span->blue;
- GLfloat a = span->alpha;
-#else
- GLfixed r = span->red;
- GLfixed g = span->green;
- GLfixed b = span->blue;
- GLfixed a = span->alpha;
-#endif
- GLuint i;
- for (i = 0; i < span->count; i++) {
- rgba[i][RCOMP] = FixedToChan(r);
- rgba[i][GCOMP] = FixedToChan(g);
- rgba[i][BCOMP] = FixedToChan(b);
- rgba[i][ACOMP] = FixedToChan(a);
- r += span->redStep;
- g += span->greenStep;
- b += span->blueStep;
- a += span->alphaStep;
- }
- }
- if (span->activeMask & SPAN_SPEC) {
-#if CHAN_TYPE == GL_FLOAT
- GLfloat r = span->specRed;
- GLfloat g = span->specGreen;
- GLfloat b = span->specBlue;
-#else
- GLfixed r = span->specRed;
- GLfixed g = span->specGreen;
- GLfixed b = span->specBlue;
-#endif
- GLuint i;
- for (i = 0; i < span->count; i++) {
- spec[i][RCOMP] = FixedToChan(r);
- spec[i][GCOMP] = FixedToChan(g);
- spec[i][BCOMP] = FixedToChan(b);
- r += span->specRedStep;
- g += span->specGreenStep;
- b += span->specBlueStep;
- }
- }
- if (span->activeMask & SPAN_INDEX) {
- GLuint i;
- GLfixed ind = span->index;
- for (i = 0; i < span->count; i++) {
- index[i] = FixedToInt(ind);
- ind += span->indexStep;
- }
- }
- if (span->activeMask & SPAN_Z) {
- if (ctx->Visual.depthBits <= 16) {
- GLuint i;
- GLfixed zval = span->z;
- for (i = 0; i < span->count; i++) {
- z[i] = FixedToInt(zval);
- zval += span->zStep;
- }
- }
- else {
- /* Deep Z buffer, no fixed->int shift */
- GLuint i;
- GLfixed zval = span->z;
- for (i = 0; i < span->count; i++) {
- z[i] = zval;
- zval += span->zStep;
- }
- }
- }
- if (span->activeMask & SPAN_FOG) {
- GLuint i;
- GLfloat f = span->fog;
- for (i = 0; i < span->count; i++) {
- fog[i] = f;
- f += span->fogStep;
- }
- }
- if (span->activeMask & SPAN_TEXTURE) {
- if (ctx->Texture._ReallyEnabled & ~TEXTURE0_ANY) {
- /* multitexture */
- if (span->activeMask & SPAN_LAMBDA) {
- /* with lambda */
- GLuint u;
- for (u = 0; u < MAX_TEXTURE_UNITS; u++) {
- if (ctx->Texture.Unit[u]._ReallyEnabled) {
- GLfloat s = span->tex[u][0];
- GLfloat t = span->tex[u][1];
- GLfloat r = span->tex[u][2];
- GLfloat q = span->tex[u][3];
- GLuint i;
- for (i = 0; i < span->count; i++) {
- const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
- msTex[u][i] = s * invQ;
- mtTex[u][i] = t * invQ;
- mrTex[u][i] = r * invQ;
- mLambda[u][i] = log(span->rho[u] * invQ * invQ) * 1.442695F * 0.5F;
- s += span->texStep[u][0];
- t += span->texStep[u][1];
- r += span->texStep[u][2];
- q += span->texStep[u][3];
- }
- }
- }
- }
- else {
- /* without lambda */
- GLuint u;
- for (u = 0; u < MAX_TEXTURE_UNITS; u++) {
- if (ctx->Texture.Unit[u]._ReallyEnabled) {
- GLfloat s = span->tex[u][0];
- GLfloat t = span->tex[u][1];
- GLfloat r = span->tex[u][2];
- GLfloat q = span->tex[u][3];
- GLuint i;
- for (i = 0; i < span->count; i++) {
- const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
- msTex[u][i] = s * invQ;
- mtTex[u][i] = t * invQ;
- mrTex[u][i] = r * invQ;
- s += span->texStep[u][0];
- t += span->texStep[u][1];
- r += span->texStep[u][2];
- q += span->texStep[u][3];
- }
- }
- }
- }
- }
- else {
- /* just texture unit 0 */
- if (span->activeMask & SPAN_LAMBDA) {
- /* with lambda */
- GLfloat s = span->tex[0][0];
- GLfloat t = span->tex[0][1];
- GLfloat r = span->tex[0][2];
- GLfloat q = span->tex[0][3];
- GLuint i;
- for (i = 0; i < span->count; i++) {
- const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
- sTex[i] = s * invQ;
- tTex[i] = t * invQ;
- rTex[i] = r * invQ;
- lambda[i] = log(span->rho[0] * invQ * invQ) * 1.442695F * 0.5F;
- s += span->texStep[0][0];
- t += span->texStep[0][1];
- r += span->texStep[0][2];
- q += span->texStep[0][3];
- }
- }
- else {
- /* without lambda */
- GLfloat s = span->tex[0][0];
- GLfloat t = span->tex[0][1];
- GLfloat r = span->tex[0][2];
- GLfloat q = span->tex[0][3];
- GLuint i;
- for (i = 0; i < span->count; i++) {
- const GLfloat invQ = (q == 0.0F) ? 1.0 : (1.0F / q);
- sTex[i] = s * invQ;
- tTex[i] = t * invQ;
- rTex[i] = r * invQ;
- s += span->texStep[0][0];
- t += span->texStep[0][1];
- r += span->texStep[0][2];
- q += span->texStep[0][3];
- }
- }
- }
- }
- /* XXX keep this? */
- if (span->activeMask & SPAN_INT_TEXTURE) {
- GLint intTexcoord[MAX_WIDTH][2];
- GLfixed s = span->intTex[0];
- GLfixed t = span->intTex[1];
- GLuint i;
- for (i = 0; i < span->count; i++) {
- intTexcoord[i][0] = FixedToInt(s);
- intTexcoord[i][1] = FixedToInt(t);
- s += span->intTexStep[0];
- t += span->intTexStep[1];
- }
- }
-
- /* examine activeMask and call a s_span.c function */
- if (span->activeMask & SPAN_TEXTURE) {
- const GLfloat *fogPtr;
- if (span->activeMask & SPAN_FOG)
- fogPtr = fog;
- else
- fogPtr = NULL;
-
- if (ctx->Texture._ReallyEnabled & ~TEXTURE0_ANY) {
- if (span->activeMask & SPAN_SPEC) {
- _mesa_write_multitexture_span(ctx, span->count, span->x, span->y,
- z, fogPtr,
- (const GLfloat (*)[MAX_WIDTH]) msTex,
- (const GLfloat (*)[MAX_WIDTH]) mtTex,
- (const GLfloat (*)[MAX_WIDTH]) mrTex,
- (GLfloat (*)[MAX_WIDTH]) mLambda,
- rgba, (CONST GLchan (*)[4]) spec,
- NULL, GL_POLYGON );
- }
- else {
- _mesa_write_multitexture_span(ctx, span->count, span->x, span->y,
- z, fogPtr,
- (const GLfloat (*)[MAX_WIDTH]) msTex,
- (const GLfloat (*)[MAX_WIDTH]) mtTex,
- (const GLfloat (*)[MAX_WIDTH]) mrTex,
- (GLfloat (*)[MAX_WIDTH]) mLambda,
- rgba, NULL, NULL, GL_POLYGON);
- }
- }
- else {
- /* single texture */
- if (span->activeMask & SPAN_SPEC) {
- _mesa_write_texture_span(ctx, span->count, span->x, span->y,
- z, fogPtr, sTex, tTex, rTex, lambda,
- rgba, (CONST GLchan (*)[4]) spec,
- NULL, GL_POLYGON);
- }
- else {
- _mesa_write_texture_span(ctx, span->count, span->x, span->y,
- z, fogPtr, sTex, tTex, rTex, lambda,
- rgba, NULL, NULL, GL_POLYGON);
- }
- }
- }
- else {
- _mesa_problem(ctx, "rasterize_span() should only be used for texturing");
- }
-
- UNDEFARRAY(rgba);
- UNDEFARRAY(spec);
- UNDEFARRAY(index);
- UNDEFARRAY(z);
- UNDEFARRAY(fog);
- UNDEFARRAY(sTex);
- UNDEFARRAY(tTex);
- UNDEFARRAY(rTex);
- UNDEFARRAY(lambda);
- UNDEFARRAY(msTex);
- UNDEFARRAY(mtTex);
- UNDEFARRAY(mrTex);
- UNDEFARRAY(mLambda);
-}
-
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define INTERP_TEX 1
-
-#define SETUP_CODE \
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current; \
- const struct gl_texture_image *texImage = obj->Image[obj->BaseLevel];\
- const GLboolean flatShade = (ctx->Light.ShadeModel==GL_FLAT); \
- GLfixed rFlat, gFlat, bFlat, aFlat; \
- DEFARRAY(GLfloat, sSpan, MAX_WIDTH); /* mac 32k limitation */ \
- DEFARRAY(GLfloat, tSpan, MAX_WIDTH); /* mac 32k limitation */ \
- DEFARRAY(GLfloat, uSpan, MAX_WIDTH); /* mac 32k limitation */ \
- CHECKARRAY(sSpan, return); /* mac 32k limitation */ \
- CHECKARRAY(tSpan, return); /* mac 32k limitation */ \
- CHECKARRAY(uSpan, return); /* mac 32k limitation */ \
- if (flatShade) { \
- rFlat = ChanToFixed(v2->color[RCOMP]); \
- gFlat = ChanToFixed(v2->color[GCOMP]); \
- bFlat = ChanToFixed(v2->color[BCOMP]); \
- aFlat = ChanToFixed(v2->color[ACOMP]); \
- } \
- span.texWidth[0] = (GLfloat) texImage->Width; \
- span.texHeight[0] = (GLfloat) texImage->Height; \
- (void) fixedToDepthShift;
-
-#define RENDER_SPAN( span ) \
- GLdepth zSpan[MAX_WIDTH]; \
- GLfloat fogSpan[MAX_WIDTH]; \
- GLchan rgbaSpan[MAX_WIDTH][4]; \
- GLuint i; \
- if (flatShade) { \
- span.red = rFlat; span.redStep = 0; \
- span.green = gFlat; span.greenStep = 0; \
- span.blue = bFlat; span.blueStep = 0; \
- span.alpha = aFlat; span.alphaStep = 0; \
- } \
- /* NOTE: we could just call rasterize_span() here instead */ \
- for (i = 0; i < span.count; i++) { \
- GLdouble invQ = span.tex[0][3] ? (1.0 / span.tex[0][3]) : 1.0; \
- zSpan[i] = FixedToDepth(span.z); \
- span.z += span.zStep; \
- fogSpan[i] = span.fog; \
- span.fog += span.fogStep; \
- rgbaSpan[i][RCOMP] = FixedToChan(span.red); \
- rgbaSpan[i][GCOMP] = FixedToChan(span.green); \
- rgbaSpan[i][BCOMP] = FixedToChan(span.blue); \
- rgbaSpan[i][ACOMP] = FixedToChan(span.alpha); \
- span.red += span.redStep; \
- span.green += span.greenStep; \
- span.blue += span.blueStep; \
- span.alpha += span.alphaStep; \
- sSpan[i] = span.tex[0][0] * invQ; \
- tSpan[i] = span.tex[0][1] * invQ; \
- uSpan[i] = span.tex[0][2] * invQ; \
- span.tex[0][0] += span.texStep[0][0]; \
- span.tex[0][1] += span.texStep[0][1]; \
- span.tex[0][2] += span.texStep[0][2]; \
- span.tex[0][3] += span.texStep[0][3]; \
- } \
- _mesa_write_texture_span(ctx, span.count, span.x, span.y, \
- zSpan, fogSpan, sSpan, tSpan, uSpan, \
- NULL, rgbaSpan, NULL, NULL, GL_POLYGON );
-
-#define CLEANUP_CODE \
- UNDEFARRAY(sSpan); /* mac 32k limitation */ \
- UNDEFARRAY(tSpan); \
- UNDEFARRAY(uSpan);
-
-#include "s_tritemp.h"
-}
-
-
-/*
- * Render a smooth-shaded, textured, RGBA triangle with separate specular
- * color interpolation.
- * Interpolate texcoords with perspective correction, w/out mipmapping.
- */
-static void general_textured_spec_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define INTERP_RGB 1
#define INTERP_SPEC 1
#define INTERP_ALPHA 1
#define INTERP_TEX 1
-#define SETUP_CODE \
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current; \
- const struct gl_texture_image *texImage = obj->Image[obj->BaseLevel];\
- const GLboolean flatShade = (ctx->Light.ShadeModel == GL_FLAT); \
- GLfixed rFlat, gFlat, bFlat, aFlat; \
- GLfixed srFlat, sgFlat, sbFlat; \
- if (flatShade) { \
- rFlat = ChanToFixed(v2->color[RCOMP]); \
- gFlat = ChanToFixed(v2->color[GCOMP]); \
- bFlat = ChanToFixed(v2->color[BCOMP]); \
- aFlat = ChanToFixed(v2->color[ACOMP]); \
- srFlat = ChanToFixed(v2->specular[RCOMP]); \
- sgFlat = ChanToFixed(v2->specular[GCOMP]); \
- sbFlat = ChanToFixed(v2->specular[BCOMP]); \
- } \
- span.texWidth[0] = (GLfloat) texImage->Width; \
- span.texHeight[0] = (GLfloat) texImage->Height; \
- (void) fixedToDepthShift;
-
-#define RENDER_SPAN( span ) \
- if (flatShade) { \
- span.red = rFlat; span.redStep = 0; \
- span.green = gFlat; span.greenStep = 0; \
- span.blue = bFlat; span.blueStep = 0; \
- span.alpha = aFlat; span.alphaStep = 0; \
- span.specRed = srFlat; span.specRedStep = 0; \
- span.specGreen = sgFlat; span.specGreenStep = 0; \
- span.specBlue = sbFlat; span.specBlueStep = 0; \
- } \
- rasterize_span(ctx, &span);
+#define RENDER_SPAN( span ) _mesa_write_texture_span(ctx, &span);
#include "s_tritemp.h"
}
-/*
- * Render a smooth-shaded, textured, RGBA triangle.
- * Interpolate S,T,R with perspective correction and compute lambda for
- * each fragment. Lambda is used to determine whether to use the
- * minification or magnification filter. If minification and using
- * mipmaps, lambda is also used to select the texture level of detail.
- */
-static void lambda_textured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define INTERP_RGB 1
-#define INTERP_ALPHA 1
-#define INTERP_TEX 1
-#define INTERP_LAMBDA 1
-
-#define SETUP_CODE \
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current; \
- const struct gl_texture_image *texImage = obj->Image[obj->BaseLevel];\
- const GLboolean flatShade = (ctx->Light.ShadeModel==GL_FLAT); \
- GLfixed rFlat, gFlat, bFlat, aFlat; \
- GLfixed srFlat, sgFlat, sbFlat; \
- if (flatShade) { \
- rFlat = ChanToFixed(v2->color[RCOMP]); \
- gFlat = ChanToFixed(v2->color[GCOMP]); \
- bFlat = ChanToFixed(v2->color[BCOMP]); \
- aFlat = ChanToFixed(v2->color[ACOMP]); \
- srFlat = ChanToFixed(v2->specular[RCOMP]); \
- sgFlat = ChanToFixed(v2->specular[GCOMP]); \
- sbFlat = ChanToFixed(v2->specular[BCOMP]); \
- } \
- span.texWidth[0] = (GLfloat) texImage->Width; \
- span.texHeight[0] = (GLfloat) texImage->Height; \
- (void) fixedToDepthShift;
-
-#define RENDER_SPAN( span ) \
- if (flatShade) { \
- span.red = rFlat; span.redStep = 0; \
- span.green = gFlat; span.greenStep = 0; \
- span.blue = bFlat; span.blueStep = 0; \
- span.alpha = aFlat; span.alphaStep = 0; \
- span.specRed = srFlat; span.specRedStep = 0; \
- span.specGreen = sgFlat; span.specGreenStep = 0; \
- span.specBlue = sbFlat; span.specBlueStep = 0; \
- } \
- rasterize_span(ctx, &span);
-
-#include "s_tritemp.h"
-}
-
-
-/*
- * Render a smooth-shaded, textured, RGBA triangle with separate specular
- * interpolation.
- * Interpolate S,T,R with perspective correction and compute lambda for
- * each fragment. Lambda is used to determine whether to use the
- * minification or magnification filter. If minification and using
- * mipmaps, lambda is also used to select the texture level of detail.
- */
-static void lambda_textured_spec_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
-#define INTERP_Z 1
-#define INTERP_FOG 1
-#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-#define INTERP_RGB 1
-#define INTERP_SPEC 1
-#define INTERP_ALPHA 1
-#define INTERP_TEX 1
-#define INTERP_LAMBDA 1
-
-#define SETUP_CODE \
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current; \
- const struct gl_texture_image *texImage = obj->Image[obj->BaseLevel];\
- const GLboolean flatShade = (ctx->Light.ShadeModel == GL_FLAT); \
- GLfixed rFlat, gFlat, bFlat, aFlat; \
- GLfixed srFlat, sgFlat, sbFlat; \
- if (flatShade) { \
- rFlat = ChanToFixed(v2->color[RCOMP]); \
- gFlat = ChanToFixed(v2->color[GCOMP]); \
- bFlat = ChanToFixed(v2->color[BCOMP]); \
- aFlat = ChanToFixed(v2->color[ACOMP]); \
- srFlat = ChanToFixed(v2->specular[RCOMP]); \
- sgFlat = ChanToFixed(v2->specular[GCOMP]); \
- sbFlat = ChanToFixed(v2->specular[BCOMP]); \
- } \
- span.texWidth[0] = (GLfloat) texImage->Width; \
- span.texHeight[0] = (GLfloat) texImage->Height; \
- (void) fixedToDepthShift;
-
-#define RENDER_SPAN( span ) \
- if (flatShade) { \
- span.red = rFlat; span.redStep = 0; \
- span.green = gFlat; span.greenStep = 0; \
- span.blue = bFlat; span.blueStep = 0; \
- span.alpha = aFlat; span.alphaStep = 0; \
- span.specRed = srFlat; span.specRedStep = 0; \
- span.specGreen = sgFlat; span.specGreenStep = 0; \
- span.specBlue = sbFlat; span.specBlueStep = 0; \
- } \
- rasterize_span(ctx, &span);
-
-#include "s_tritemp.h"
-}
-
/*
* This is the big one!
- * Interpolate Z, RGB, Alpha, specular, fog, and N sets of texture coordinates
- * with lambda (LOD).
+ * Interpolate Z, RGB, Alpha, specular, fog, and N sets of texture coordinates.
* Yup, it's slow.
*/
static void
-lambda_multitextured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
+multitextured_triangle( GLcontext *ctx,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2 )
{
#define INTERP_Z 1
#define INTERP_ALPHA 1
#define INTERP_SPEC 1
#define INTERP_MULTITEX 1
-#define INTERP_LAMBDA 1
-#define SETUP_CODE \
- const GLboolean flatShade = (ctx->Light.ShadeModel == GL_FLAT); \
- GLfixed rFlat, gFlat, bFlat, aFlat; \
- GLfixed srFlat, sgFlat, sbFlat; \
- GLuint u; \
- if (flatShade) { \
- rFlat = ChanToFixed(v2->color[RCOMP]); \
- gFlat = ChanToFixed(v2->color[GCOMP]); \
- bFlat = ChanToFixed(v2->color[BCOMP]); \
- aFlat = ChanToFixed(v2->color[ACOMP]); \
- srFlat = ChanToFixed(v2->specular[RCOMP]); \
- sgFlat = ChanToFixed(v2->specular[GCOMP]); \
- sbFlat = ChanToFixed(v2->specular[BCOMP]); \
- } \
- for (u = 0; u < ctx->Const.MaxTextureUnits; u++) { \
- if (ctx->Texture.Unit[u]._ReallyEnabled) { \
- const struct gl_texture_object *texObj; \
- const struct gl_texture_image *texImage; \
- texObj = ctx->Texture.Unit[u]._Current; \
- texImage = texObj->Image[texObj->BaseLevel]; \
- span.texWidth[u] = (GLfloat) texImage->Width; \
- span.texHeight[u] = (GLfloat) texImage->Height; \
- } \
- } \
- (void) fixedToDepthShift;
-
-#define RENDER_SPAN( span ) \
- if (flatShade) { \
- span.red = rFlat; span.redStep = 0; \
- span.green = gFlat; span.greenStep = 0; \
- span.blue = bFlat; span.blueStep = 0; \
- span.alpha = aFlat; span.alphaStep = 0; \
- span.specRed = srFlat; span.specRedStep = 0; \
- span.specGreen = sgFlat; span.specGreenStep = 0; \
- span.specBlue = sbFlat; span.specBlueStep = 0; \
- } \
- rasterize_span(ctx, &span);
+#define RENDER_SPAN( span ) _mesa_write_texture_span(ctx, &span);
#include "s_tritemp.h"
#define RENDER_SPAN( span ) \
GLuint i; \
- for (i = 0; i < span.count; i++) { \
+ for (i = 0; i < span.end; i++) { \
GLdepth z = FixedToDepth(span.z); \
if (z < zRow[i]) { \
ctx->OcclusionResult = GL_TRUE; \
(void) (ctx && v0 && v1 && v2);
}
+
+/*
+ * This is used when separate specular color is enabled, but not
+ * texturing. We add the specular color to the primary color,
+ * draw the triangle, then restore the original primary color.
+ * Inefficient, but seldom needed.
+ */
void _swrast_add_spec_terms_triangle( GLcontext *ctx,
const SWvertex *v0,
const SWvertex *v1,
SWvertex *ncv0 = (SWvertex *)v0; /* drop const qualifier */
SWvertex *ncv1 = (SWvertex *)v1;
SWvertex *ncv2 = (SWvertex *)v2;
+#if CHAN_TYPE == GL_FLOAT
+ GLfloat rSum, gSum, bSum;
+#else
+ GLint rSum, gSum, bSum;
+#endif
GLchan c[3][4];
+ /* save original colors */
COPY_CHAN4( c[0], ncv0->color );
COPY_CHAN4( c[1], ncv1->color );
COPY_CHAN4( c[2], ncv2->color );
- ACC_3V( ncv0->color, ncv0->specular );
- ACC_3V( ncv1->color, ncv1->specular );
- ACC_3V( ncv2->color, ncv2->specular );
+ /* sum v0 */
+ rSum = ncv0->color[0] + ncv0->specular[0];
+ gSum = ncv0->color[1] + ncv0->specular[1];
+ bSum = ncv0->color[2] + ncv0->specular[2];
+ ncv0->color[0] = MIN2(rSum, CHAN_MAX);
+ ncv0->color[1] = MIN2(gSum, CHAN_MAX);
+ ncv0->color[2] = MIN2(bSum, CHAN_MAX);
+ /* sum v1 */
+ rSum = ncv1->color[0] + ncv1->specular[0];
+ gSum = ncv1->color[1] + ncv1->specular[1];
+ bSum = ncv1->color[2] + ncv1->specular[2];
+ ncv1->color[0] = MIN2(rSum, CHAN_MAX);
+ ncv1->color[1] = MIN2(gSum, CHAN_MAX);
+ ncv1->color[2] = MIN2(bSum, CHAN_MAX);
+ /* sum v2 */
+ rSum = ncv2->color[0] + ncv2->specular[0];
+ gSum = ncv2->color[1] + ncv2->specular[1];
+ bSum = ncv2->color[2] + ncv2->specular[2];
+ ncv2->color[0] = MIN2(rSum, CHAN_MAX);
+ ncv2->color[1] = MIN2(gSum, CHAN_MAX);
+ ncv2->color[2] = MIN2(bSum, CHAN_MAX);
+ /* draw */
SWRAST_CONTEXT(ctx)->SpecTriangle( ctx, ncv0, ncv1, ncv2 );
+ /* restore original colors */
COPY_CHAN4( ncv0->color, c[0] );
COPY_CHAN4( ncv1->color, c[1] );
COPY_CHAN4( ncv2->color, c[2] );
#ifdef DEBUG
/* record the current triangle function name */
-static const char *triFuncName = NULL;
+const char *_mesa_triFuncName = NULL;
-#define USE(triFunc) \
-do { \
- triFuncName = #triFunc; \
- /*printf("%s\n", triFuncName);*/ \
- swrast->Triangle = triFunc; \
+#define USE(triFunc) \
+do { \
+ _mesa_triFuncName = #triFunc; \
+ /*printf("%s\n", _mesa_triFuncName);*/ \
+ swrast->Triangle = triFunc; \
} while (0)
#else
}
}
- if (ctx->Texture._ReallyEnabled) {
+ if (ctx->Texture._EnabledUnits) {
/* Ugh, we do a _lot_ of tests to pick the best textured tri func */
const struct gl_texture_object *texObj2D;
const struct gl_texture_image *texImg;
envMode = ctx->Texture.Unit[0].EnvMode;
/* First see if we can used an optimized 2-D texture function */
- if (ctx->Texture._ReallyEnabled==TEXTURE0_2D
+ if (ctx->Texture._EnabledUnits == 1
+ && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT
&& texObj2D->WrapS==GL_REPEAT
&& texObj2D->WrapT==GL_REPEAT
&& texImg->Border==0
+ && texImg->Width == texImg->RowStride
&& (format == MESA_FORMAT_RGB || format == MESA_FORMAT_RGBA)
&& minFilter == magFilter
&& ctx->Light.Model.ColorControl == GL_SINGLE_COLOR
}
}
else {
-#if CHAN_TYPE == GL_FLOAT
+#if (CHAN_BITS == 16 || CHAN_BITS == 32)
USE(general_textured_triangle);
#else
USE(affine_textured_triangle);
}
}
else {
-#if CHAN_TYPE == GL_FLOAT
+#if (CHAN_BITS == 16 || CHAN_BITS == 32)
USE(general_textured_triangle);
#else
USE(persp_textured_triangle);
}
}
else {
- /* More complicated textures (mipmap, multi-tex, sep specular) */
- GLboolean needLambda;
- /* if mag filter != min filter we need to compute lambda */
- const struct gl_texture_object *obj = ctx->Texture.Unit[0]._Current;
- if (obj && obj->MinFilter != obj->MagFilter)
- needLambda = GL_TRUE;
- else
- needLambda = GL_FALSE;
- if (ctx->Texture._ReallyEnabled > TEXTURE0_ANY) {
- USE(lambda_multitextured_triangle);
- }
- else if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR) {
- /* separate specular color interpolation */
- if (needLambda) {
- USE(lambda_textured_spec_triangle);
- }
- else {
- USE(general_textured_spec_triangle);
- }
+ /* general case textured triangles */
+ if (ctx->Texture._EnabledUnits > 1) {
+ USE(multitextured_triangle);
}
else {
- if (needLambda) {
- USE(lambda_textured_triangle);
- }
- else {
- USE(general_textured_triangle);
- }
+ USE(general_textured_triangle);
}
}
}
else {
- ASSERT(!ctx->Texture._ReallyEnabled);
+ ASSERT(!ctx->Texture._EnabledUnits);
if (ctx->Light.ShadeModel==GL_SMOOTH) {
/* smooth shaded, no texturing, stippled or some raster ops */
if (rgbmode) {
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