-/* $Id: s_triangle.c,v 1.27 2001/05/15 21:30:27 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 6.1
*
- * Copyright (C) 1999-2001 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2004 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 "texstate.h"
#include "s_feedback.h"
#include "s_span.h"
#include "s_triangle.h"
-#include "s_trispan.h"
-
-GLboolean _mesa_cull_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
+/*
+ * Just used for feedback mode.
+ */
+GLboolean
+_swrast_culltriangle( GLcontext *ctx,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2 )
{
GLfloat ex = v1->win[0] - v0->win[0];
GLfloat ey = v1->win[1] - v0->win[1];
GLfloat fy = v2->win[1] - v0->win[1];
GLfloat c = ex*fy-ey*fx;
- if (c * SWRAST_CONTEXT(ctx)->_backface_sign > 0)
+ if (c * SWRAST_CONTEXT(ctx)->_BackfaceSign > 0)
return 0;
return 1;
/*
* Render a flat-shaded color index triangle.
*/
-static void flat_ci_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME flat_ci_triangle
#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 = FloatToFixed(v2->index);\
+ span.indexStep = 0;
+#define RENDER_SPAN( span ) _swrast_write_index_span(ctx, &span);
#include "s_tritemp.h"
-}
/*
* Render a smooth-shaded color index triangle.
*/
-static void smooth_ci_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME smooth_ci_triangle
#define INTERP_Z 1
#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 ) _swrast_write_index_span(ctx, &span);
#include "s_tritemp.h"
-}
/*
* Render a flat-shaded RGBA triangle.
*/
-static void flat_rgba_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME flat_rgba_triangle
#define INTERP_Z 1
#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._EnabledCoordUnits == 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 ) _swrast_write_rgba_span(ctx, &span);
#include "s_tritemp.h"
- ASSERT(!ctx->Texture._ReallyEnabled); /* texturing must be off */
- ASSERT(ctx->Light.ShadeModel==GL_FLAT);
-}
-
/*
* Render a smooth-shaded RGBA triangle.
*/
-static void smooth_rgba_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
-
+#define NAME smooth_rgba_triangle
#define INTERP_Z 1
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#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] = FixedToInt(span.red); \
- rgbaSpan[i][GCOMP] = FixedToInt(span.green); \
- rgbaSpan[i][BCOMP] = FixedToInt(span.blue); \
- rgbaSpan[i][ACOMP] = FixedToInt(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._EnabledCoordUnits == 0); \
+ ASSERT(ctx->Light.ShadeModel==GL_SMOOTH); \
+ }
+#define RENDER_SPAN( span ) _swrast_write_rgba_span(ctx, &span);
#include "s_tritemp.h"
- ASSERT(!ctx->Texture._ReallyEnabled); /* texturing must be off */
- ASSERT(ctx->Light.ShadeModel==GL_SMOOTH);
-}
/*
*
* No fog.
*/
-static void simple_textured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME simple_textured_triangle
#define INTERP_INT_TEX 1
#define S_SCALE twidth
#define T_SCALE theight
#define SETUP_CODE \
SWcontext *swrast = SWRAST_CONTEXT(ctx); \
struct gl_texture_object *obj = ctx->Texture.Unit[0].Current2D; \
- 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; \
- const GLint smask = obj->Image[b]->Width - 1; \
- const GLint tmask = obj->Image[b]->Height - 1; \
+ const GLint b = obj->BaseLevel; \
+ const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \
+ const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \
+ const GLint twidth_log2 = obj->Image[0][b]->WidthLog2; \
+ const GLchan *texture = (const GLchan *) obj->Image[0][b]->Data; \
+ const GLint smask = obj->Image[0][b]->Width - 1; \
+ const GLint tmask = obj->Image[0][b]->Height - 1; \
if (!texture) { \
/* this shouldn't happen */ \
return; \
}
#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"
-}
+
/*
*
* No fog.
*/
-static void simple_z_textured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME simple_z_textured_triangle
#define INTERP_Z 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#define INTERP_INT_TEX 1
#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 GLchan *texture = (const GLchan *) obj->Image[b]->Data; \
- GLint smask = obj->Image[b]->Width - 1; \
- GLint tmask = obj->Image[b]->Height - 1; \
+ const GLint b = obj->BaseLevel; \
+ const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \
+ const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \
+ const GLint twidth_log2 = obj->Image[0][b]->WidthLog2; \
+ const GLchan *texture = (const GLchan *) obj->Image[0][b]->Data; \
+ const GLint smask = obj->Image[0][b]->Width - 1; \
+ const GLint tmask = obj->Image[0][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"
-}
+#if CHAN_TYPE != GL_FLOAT
+
struct affine_info
{
GLenum filter;
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)
{
- GLint tr, tg, tb, ta;
+ 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
- * and complexity. Observe that an optimizing compiler kills
- * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST).
- */
+ /* Instead of defining a function for each mode, a test is done
+ * between the outer and inner loops. This is to reduce code size
+ * and complexity. Observe that an optimizing compiler kills
+ * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST).
+ */
-#define NEAREST_RGB \
- tr = tex00[RCOMP]; \
- tg = tex00[GCOMP]; \
- tb = tex00[BCOMP]; \
- ta = 0xff
+#define NEAREST_RGB \
+ sample[RCOMP] = tex00[RCOMP]; \
+ sample[GCOMP] = tex00[GCOMP]; \
+ sample[BCOMP] = tex00[BCOMP]; \
+ sample[ACOMP] = CHAN_MAX
#define LINEAR_RGB \
- tr = (ti * (si * tex00[0] + sf * tex01[0]) + \
- tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \
- tg = (ti * (si * tex00[1] + sf * tex01[1]) + \
- tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \
- tb = (ti * (si * tex00[2] + sf * tex01[2]) + \
- tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \
- ta = 0xff
-
-#define NEAREST_RGBA \
- tr = tex00[RCOMP]; \
- tg = tex00[GCOMP]; \
- tb = tex00[BCOMP]; \
- ta = tex00[ACOMP]
+ sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
+ tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \
+ sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
+ tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \
+ sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
+ tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \
+ sample[ACOMP] = CHAN_MAX
+
+#define NEAREST_RGBA COPY_CHAN4(sample, tex00)
#define LINEAR_RGBA \
- tr = (ti * (si * tex00[0] + sf * tex01[0]) + \
- tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT; \
- tg = (ti * (si * tex00[1] + sf * tex01[1]) + \
- tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT; \
- tb = (ti * (si * tex00[2] + sf * tex01[2]) + \
- tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT; \
- ta = (ti * (si * tex00[3] + sf * tex01[3]) + \
- tf * (si * tex10[3] + sf * tex11[3])) >> 2 * FIXED_SHIFT
-
-#define MODULATE \
- dest[RCOMP] = span->red * (tr + 1) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = span->green * (tg + 1) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = span->blue * (tb + 1) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = span->alpha * (ta + 1) >> (FIXED_SHIFT + 8)
+ sample[RCOMP] = (ti * (si * tex00[0] + sf * tex01[0]) + \
+ tf * (si * tex10[0] + sf * tex11[0])) >> 2 * FIXED_SHIFT;\
+ sample[GCOMP] = (ti * (si * tex00[1] + sf * tex01[1]) + \
+ tf * (si * tex10[1] + sf * tex11[1])) >> 2 * FIXED_SHIFT;\
+ sample[BCOMP] = (ti * (si * tex00[2] + sf * tex01[2]) + \
+ tf * (si * tex10[2] + sf * tex11[2])) >> 2 * FIXED_SHIFT;\
+ 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 * (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] = ((0xff - ta) * span->red \
- + ((ta + 1) * tr << FIXED_SHIFT)) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = ((0xff - ta) * span->green \
- + ((ta + 1) * tg << FIXED_SHIFT)) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = ((0xff - ta) * span->blue \
- + ((ta + 1) * tb << FIXED_SHIFT)) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = FixedToInt(span->alpha)
+ dest[RCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->red + \
+ ((sample[ACOMP] + 1) * sample[RCOMP] << FIXED_SHIFT)) \
+ >> (FIXED_SHIFT + 8); \
+ dest[GCOMP] = ((CHAN_MAX - sample[ACOMP]) * span->green + \
+ ((sample[ACOMP] + 1) * sample[GCOMP] << FIXED_SHIFT)) \
+ >> (FIXED_SHIFT + 8); \
+ 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] = ((0xff - tr) * span->red \
- + (tr + 1) * info->er) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = ((0xff - tg) * span->green \
- + (tg + 1) * info->eg) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = ((0xff - tb) * span->blue \
- + (tb + 1) * info->eb) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = span->alpha * (ta + 1) >> (FIXED_SHIFT + 8)
-
-#define REPLACE \
- dest[RCOMP] = tr; \
- dest[GCOMP] = tg; \
- dest[BCOMP] = tb; \
- dest[ACOMP] = ta
+ 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, sample)
#define ADD \
- dest[RCOMP] = ((span->red << 8) \
- + (tr + 1) * info->er) >> (FIXED_SHIFT + 8); \
- dest[GCOMP] = ((span->green << 8) \
- + (tg + 1) * info->eg) >> (FIXED_SHIFT + 8); \
- dest[BCOMP] = ((span->blue << 8) \
- + (tb + 1) * info->eb) >> (FIXED_SHIFT + 8); \
- dest[ACOMP] = span->alpha * (ta + 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 *(GLint *)dest = *(GLint *)tex00
+#define NEAREST_RGBA_REPLACE COPY_CHAN4(dest, tex00)
-#define SPAN1(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+#define SPAN_NEAREST(DO_TEX,COMP) \
+ 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; \
dest += 4; \
}
-#define SPAN2(DO_TEX,COMP) \
- for (i = 0; i < span->count; i++) { \
+#define SPAN_LINEAR(DO_TEX,COMP) \
+ 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 sf = span->intTex[0] & FIXED_FRAC_MASK; \
- GLint tf = span->intTex[1] & FIXED_FRAC_MASK; \
- GLint si = FIXED_FRAC_MASK - sf; \
- GLint ti = FIXED_FRAC_MASK - tf; \
+ GLfixed sf = span->intTex[0] & FIXED_FRAC_MASK; \
+ GLfixed tf = span->intTex[1] & FIXED_FRAC_MASK; \
+ GLfixed si = FIXED_FRAC_MASK - sf; \
+ GLfixed ti = FIXED_FRAC_MASK - tf; \
GLint pos = (t << info->twidth_log2) + s; \
const GLchan *tex00 = info->texture + COMP * pos; \
const GLchan *tex10 = tex00 + info->tbytesline; \
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;
case GL_RGB:
switch (info->envmode) {
case GL_MODULATE:
- SPAN1(NEAREST_RGB;MODULATE,3);
+ SPAN_NEAREST(NEAREST_RGB;MODULATE,3);
break;
case GL_DECAL:
case GL_REPLACE:
- SPAN1(NEAREST_RGB_REPLACE,3);
+ SPAN_NEAREST(NEAREST_RGB_REPLACE,3);
break;
case GL_BLEND:
- SPAN1(NEAREST_RGB;BLEND,3);
+ SPAN_NEAREST(NEAREST_RGB;BLEND,3);
break;
case GL_ADD:
- SPAN1(NEAREST_RGB;ADD,3);
+ SPAN_NEAREST(NEAREST_RGB;ADD,3);
break;
default:
- abort();
+ _mesa_problem(ctx, "bad tex env mode in SPAN_LINEAR");
+ return;
}
break;
case GL_RGBA:
switch(info->envmode) {
case GL_MODULATE:
- SPAN1(NEAREST_RGBA;MODULATE,4);
+ SPAN_NEAREST(NEAREST_RGBA;MODULATE,4);
break;
case GL_DECAL:
- SPAN1(NEAREST_RGBA;DECAL,4);
+ SPAN_NEAREST(NEAREST_RGBA;DECAL,4);
break;
case GL_BLEND:
- SPAN1(NEAREST_RGBA;BLEND,4);
+ SPAN_NEAREST(NEAREST_RGBA;BLEND,4);
break;
case GL_ADD:
- SPAN1(NEAREST_RGBA;ADD,4);
+ SPAN_NEAREST(NEAREST_RGBA;ADD,4);
break;
case GL_REPLACE:
- SPAN1(NEAREST_RGBA_REPLACE,4);
+ SPAN_NEAREST(NEAREST_RGBA_REPLACE,4);
break;
default:
- abort();
+ _mesa_problem(ctx, "bad tex env mode (2) in SPAN_LINEAR");
+ return;
}
break;
}
case GL_RGB:
switch (info->envmode) {
case GL_MODULATE:
- SPAN2(LINEAR_RGB;MODULATE,3);
+ SPAN_LINEAR(LINEAR_RGB;MODULATE,3);
break;
case GL_DECAL:
case GL_REPLACE:
- SPAN2(LINEAR_RGB;REPLACE,3);
+ SPAN_LINEAR(LINEAR_RGB;REPLACE,3);
break;
case GL_BLEND:
- SPAN2(LINEAR_RGB;BLEND,3);
+ SPAN_LINEAR(LINEAR_RGB;BLEND,3);
break;
case GL_ADD:
- SPAN2(LINEAR_RGB;ADD,3);
+ SPAN_LINEAR(LINEAR_RGB;ADD,3);
break;
default:
- abort();
+ _mesa_problem(ctx, "bad tex env mode (3) in SPAN_LINEAR");
+ return;
}
break;
case GL_RGBA:
switch (info->envmode) {
case GL_MODULATE:
- SPAN2(LINEAR_RGBA;MODULATE,4);
+ SPAN_LINEAR(LINEAR_RGBA;MODULATE,4);
break;
case GL_DECAL:
- SPAN2(LINEAR_RGBA;DECAL,4);
+ SPAN_LINEAR(LINEAR_RGBA;DECAL,4);
break;
case GL_BLEND:
- SPAN2(LINEAR_RGBA;BLEND,4);
+ SPAN_LINEAR(LINEAR_RGBA;BLEND,4);
break;
case GL_ADD:
- SPAN2(LINEAR_RGBA;ADD,4);
+ SPAN_LINEAR(LINEAR_RGBA;ADD,4);
break;
case GL_REPLACE:
- SPAN2(LINEAR_RGBA;REPLACE,4);
+ SPAN_LINEAR(LINEAR_RGBA;REPLACE,4);
break;
default:
- abort();
- } break;
+ _mesa_problem(ctx, "bad tex env mode (4) in SPAN_LINEAR");
+ return;
+ }
+ break;
}
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);
+ _swrast_write_rgba_span(ctx, span);
-#undef SPAN1
-#undef SPAN2
-#undef FixedToDepth
+#undef SPAN_NEAREST
+#undef SPAN_LINEAR
}
/*
* Render an RGB/RGBA textured triangle without perspective correction.
*/
-static void affine_textured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME affine_textured_triangle
#define INTERP_Z 1
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#define S_SCALE twidth
#define T_SCALE theight
-#define SETUP_CODE
- struct affine_info info;
+#define SETUP_CODE \
+ 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;\
- info.texture = (const GLchan *) obj->Image[b]->Data; \
- info.twidth_log2 = obj->Image[b]->WidthLog2; \
- info.smask = obj->Image[b]->Width - 1; \
- info.tmask = obj->Image[b]->Height - 1; \
- info.format = obj->Image[b]->Format; \
+ const GLint b = obj->BaseLevel; \
+ const GLfloat twidth = (GLfloat) obj->Image[0][b]->Width; \
+ const GLfloat theight = (GLfloat) obj->Image[0][b]->Height; \
+ info.texture = (const GLchan *) obj->Image[0][b]->Data; \
+ info.twidth_log2 = obj->Image[0][b]->WidthLog2; \
+ info.smask = obj->Image[0][b]->Width - 1; \
+ info.tmask = obj->Image[0][b]->Height - 1; \
+ info.format = obj->Image[0][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 */ \
case GL_ALPHA: \
case GL_LUMINANCE: \
case GL_INTENSITY: \
- info.tbytesline = obj->Image[b]->Width; \
+ info.tbytesline = obj->Image[0][b]->Width; \
break; \
case GL_LUMINANCE_ALPHA: \
- info.tbytesline = obj->Image[b]->Width * 2; \
+ info.tbytesline = obj->Image[0][b]->Width * 2; \
break; \
case GL_RGB: \
- info.tbytesline = obj->Image[b]->Width * 3; \
+ info.tbytesline = obj->Image[0][b]->Width * 3; \
break; \
case GL_RGBA: \
- info.tbytesline = obj->Image[b]->Width * 4; \
+ info.tbytesline = obj->Image[0][b]->Width * 4; \
break; \
default: \
_mesa_problem(NULL, "Bad texture format in affine_texture_triangle");\
return; \
} \
- info.tsize = obj->Image[b]->Height * info.tbytesline;
+ info.tsize = obj->Image[0][b]->Height * info.tbytesline;
-#define RENDER_SPAN( span ) \
- affine_span(ctx, &span, &info);
+#define RENDER_SPAN( span ) affine_span(ctx, &span, &info);
#include "s_tritemp.h"
-}
-#if 0 /* XXX disabled because of texcoord interpolation errors */
-/*
- * Render an perspective corrected RGB/RGBA textured triangle.
- * The Q (aka V in Mesa) coordinate must be zero such that the divide
- * by interpolated Q/W comes out right.
- *
- * This function only renders textured triangles that use GL_NEAREST.
- * Perspective correction works right.
- *
- * This function written by Klaus Niederkrueger <klaus@math.leidenuniv.nl>
- * Send all questions and bug reports to him.
- */
-static void near_persp_textured_triangle(GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
+struct persp_info
{
-/* The BIAS value is used to shift negative values into positive values.
- * Without this, negative texture values don't GL_REPEAT correctly at just
- * below zero, because (int)-0.5 = 0 = (int)0.5. We're not going to worry
- * about texture coords less than -BIAS. This could be fixed by using
- * FLOORF etc. instead, but this is slower...
- */
-#define BIAS 4096.0F
+ GLenum filter;
+ GLenum format;
+ GLenum envmode;
+ GLint smask, tmask;
+ GLint twidth_log2;
+ const GLchan *texture;
+ GLfixed er, eg, eb, ea; /* texture env color */
+ GLint tbytesline, tsize;
+};
-#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 SETUP_CODE \
- struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
- struct gl_texture_object *obj = unit->Current2D; \
- 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; \
- const GLint smask = (obj->Image[b]->Width - 1); \
- const GLint tmask = (obj->Image[b]->Height - 1); \
- const GLint format = obj->Image[b]->Format; \
- const GLint envmode = unit->EnvMode; \
- GLfloat sscale, tscale; \
- GLfixed er, eg, eb, ea; \
- GLint tr, tg, tb, ta; \
- if (!texture) { \
- /* this shouldn't happen */ \
- return; \
- } \
- if (envmode == GL_BLEND || envmode == GL_ADD) { \
- er = FloatToFixed(unit->EnvColor[RCOMP]); \
- eg = FloatToFixed(unit->EnvColor[GCOMP]); \
- eb = FloatToFixed(unit->EnvColor[BCOMP]); \
- ea = FloatToFixed(unit->EnvColor[ACOMP]); \
- } \
- sscale = twidth; \
- tscale = theight; \
-
-
-#define OLD_SPAN(DO_TEX,COMP) \
- for (i=0;i<n;i++) { \
- GLfloat invQ = 1.0f / vv; \
- GLint s = (int)(SS * invQ + BIAS) & smask; \
- GLint t = (int)(TT * invQ + BIAS) & tmask; \
- GLint pos = COMP * ((t << twidth_log2) + s); \
- const GLchan *tex00 = texture + 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; \
- span.alpha += span.alphaStep; \
- SS += dSdx; \
- TT += dTdx; \
- vv += dvdx; \
- dest += 4; \
- }
+static INLINE void
+fast_persp_span(GLcontext *ctx, struct sw_span *span,
+ struct persp_info *info)
+{
+ GLchan sample[4]; /* the filtered texture sample */
-#define X_Y_TEX_COORD(X, Y) ((((int)(X) & tmask) << twidth_log2) + ((int)(Y) & smask))
-#define Y_X_TEX_COORD(X, Y) ((((int)(Y) & tmask) << twidth_log2) + ((int)(X) & smask))
-
-#define SPAN1(DO_TEX, COMP, TEX_COORD) { \
- GLfloat x_max = CEILF(x_tex); \
- GLfloat y_max = y_tex + (x_max - x_tex) * dy_dx; \
- GLint j, x_m = (int)x_max; \
- GLint pos; \
- if ((int)y_max != (int)y_tex) { \
- GLfloat x_mid = x_tex + (CEILF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_tex, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_max; \
- } \
- nominator += vv * x_max; \
- denominator -= dvdx * x_max; \
- j = nominator / denominator; \
- pos = COMP * TEX_COORD(x_tex, y_tex); \
- DRAW_LINE (DO_TEX); \
- while (i<n) { \
- y_tex = y_max; \
- y_max += dy_dx; \
- if ((int)y_max != (int)y_tex) { \
- GLfloat x_mid = (CEILF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_max; \
- } \
- nominator += vv; \
- denominator -= dvdx; \
- j = nominator/denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- x_m ++; \
- } \
-}
+ /* Instead of defining a function for each mode, a test is done
+ * between the outer and inner loops. This is to reduce code size
+ * and complexity. Observe that an optimizing compiler kills
+ * unused variables (for instance tf,sf,ti,si in case of GL_NEAREST).
+ */
+#define SPAN_NEAREST(DO_TEX,COMP) \
+ for (i = 0; i < span->end; i++) { \
+ GLdouble invQ = tex_coord[2] ? \
+ (1.0 / tex_coord[2]) : 1.0; \
+ 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; \
+ DO_TEX; \
+ span->red += span->redStep; \
+ span->green += span->greenStep; \
+ span->blue += span->blueStep; \
+ span->alpha += span->alphaStep; \
+ tex_coord[0] += tex_step[0]; \
+ tex_coord[1] += tex_step[1]; \
+ tex_coord[2] += tex_step[2]; \
+ dest += 4; \
+ }
-#define SPAN2(DO_TEX, COMP, TEX_COORD) { \
- GLfloat x_max = CEILF (x_tex); \
- GLfloat y_max = y_tex + (x_max - x_tex) * dy_dx; \
- GLint j, x_m = (int) x_max; \
- GLint pos; \
- if ((int)y_max != (int)y_tex) { \
- GLfloat x_mid = x_tex + (FLOORF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_tex, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_max; \
- } \
- nominator += vv * x_max; \
- denominator -= dvdx * x_max; \
- j = nominator / denominator; \
- pos = COMP * TEX_COORD(x_tex, y_tex); \
- DRAW_LINE (DO_TEX); \
- while (i<n) { \
- y_tex = y_max; \
- y_max += dy_dx; \
- if ((int)y_max != (int)y_tex) { \
- GLfloat x_mid = (FLOORF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid);\
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_max; \
- } \
- nominator += vv; \
- denominator -= dvdx; \
- j = nominator/denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- x_m ++; \
- } \
-}
+#define SPAN_LINEAR(DO_TEX,COMP) \
+ for (i = 0; i < span->end; i++) { \
+ GLdouble invQ = tex_coord[2] ? \
+ (1.0 / tex_coord[2]) : 1.0; \
+ 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; \
+ GLint t = FixedToInt(FixedFloor(t_fix)) & info->tmask; \
+ GLfixed sf = s_fix & FIXED_FRAC_MASK; \
+ GLfixed tf = t_fix & FIXED_FRAC_MASK; \
+ GLfixed si = FIXED_FRAC_MASK - sf; \
+ GLfixed ti = FIXED_FRAC_MASK - tf; \
+ GLint pos = (t << info->twidth_log2) + s; \
+ const GLchan *tex00 = info->texture + COMP * pos; \
+ const GLchan *tex10 = tex00 + info->tbytesline; \
+ const GLchan *tex01 = tex00 + COMP; \
+ const GLchan *tex11 = tex10 + COMP; \
+ (void) ti; \
+ (void) si; \
+ if (t == info->tmask) { \
+ tex10 -= info->tsize; \
+ tex11 -= info->tsize; \
+ } \
+ if (s == info->smask) { \
+ tex01 -= info->tbytesline; \
+ tex11 -= info->tbytesline; \
+ } \
+ DO_TEX; \
+ span->red += span->redStep; \
+ span->green += span->greenStep; \
+ span->blue += span->blueStep; \
+ span->alpha += span->alphaStep; \
+ tex_coord[0] += tex_step[0]; \
+ tex_coord[1] += tex_step[1]; \
+ tex_coord[2] += tex_step[2]; \
+ dest += 4; \
+ }
-#define SPAN3(DO_TEX, COMP, TEX_COORD) { \
- GLfloat x_min = FLOORF (x_tex); \
- GLfloat y_min = y_tex + (x_min - x_tex) * dy_dx; \
- GLint j, x_m = (int)x_min; \
- GLint pos; \
- if ((int)y_min != (int)y_tex) { \
- GLfloat x_mid = x_tex + (CEILF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_min; \
- } \
- nominator += vv*x_min; \
- denominator -= dvdx*x_min; \
- j = nominator / denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- while (i<n) { \
- x_m --; \
- y_tex = y_min; \
- y_min -= dy_dx; \
- if ((int)y_min != (int)y_tex) { \
- GLfloat x_mid = (CEILF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_min; \
- } \
- nominator -= vv; \
- denominator += dvdx; \
- j = nominator/denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- } \
-}
+ GLuint i;
+ GLfloat tex_coord[3], tex_step[3];
+ GLchan *dest = span->array->rgba[0];
-#define SPAN4(DO_TEX, COMP, TEX_COORD) \
-{ \
- GLfloat x_min = FLOORF(x_tex); \
- GLint x_m = (int)x_min; \
- GLfloat y_min = y_tex + (x_min - x_tex) * dy_dx; \
- GLint j; \
- GLint pos; \
- if ((int)y_min != (int)y_tex) { \
- GLfloat x_mid = x_tex + (FLOORF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_min; \
- } \
- nominator += vv * x_min; \
- denominator -= dvdx * x_min; \
- j = nominator / denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- while (i<n) { \
- x_m --; \
- y_tex = y_min; \
- y_min -= dy_dx; \
- if ((int)y_min != (int)y_tex) { \
- GLfloat x_mid = (FLOORF(y_tex)-y_tex) * dx_dy; \
- j = (nominator + vv * x_mid)/(denominator - dvdx*x_mid); \
- pos = COMP * TEX_COORD(x_m, (y_tex)); \
- DRAW_LINE (DO_TEX); \
- y_tex = y_min; \
- } \
- nominator -= vv; \
- denominator += dvdx; \
- j = nominator/denominator; \
- pos = COMP * TEX_COORD(x_m, y_tex); \
- DRAW_LINE (DO_TEX); \
- } \
-}
+ 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->texStepX[0][3];
-#define DRAW_LINE(DO_TEX) \
- { \
- GLchan *tex00 = texture + pos; \
- if (j>n || j<-100000) \
- j = n; \
- while (i<j) { \
- 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; \
- span.alpha += span.alphaStep; \
- dest += 4; \
- i++; \
- } \
- }
+ switch (info->filter) {
+ case GL_NEAREST:
+ switch (info->format) {
+ case GL_RGB:
+ switch (info->envmode) {
+ case GL_MODULATE:
+ SPAN_NEAREST(NEAREST_RGB;MODULATE,3);
+ break;
+ case GL_DECAL:
+ case GL_REPLACE:
+ SPAN_NEAREST(NEAREST_RGB_REPLACE,3);
+ break;
+ case GL_BLEND:
+ SPAN_NEAREST(NEAREST_RGB;BLEND,3);
+ break;
+ case GL_ADD:
+ SPAN_NEAREST(NEAREST_RGB;ADD,3);
+ break;
+ default:
+ _mesa_problem(ctx, "bad tex env mode (5) in SPAN_LINEAR");
+ return;
+ }
+ break;
+ case GL_RGBA:
+ switch(info->envmode) {
+ case GL_MODULATE:
+ SPAN_NEAREST(NEAREST_RGBA;MODULATE,4);
+ break;
+ case GL_DECAL:
+ SPAN_NEAREST(NEAREST_RGBA;DECAL,4);
+ break;
+ case GL_BLEND:
+ SPAN_NEAREST(NEAREST_RGBA;BLEND,4);
+ break;
+ case GL_ADD:
+ SPAN_NEAREST(NEAREST_RGBA;ADD,4);
+ break;
+ case GL_REPLACE:
+ SPAN_NEAREST(NEAREST_RGBA_REPLACE,4);
+ break;
+ default:
+ _mesa_problem(ctx, "bad tex env mode (6) in SPAN_LINEAR");
+ return;
+ }
+ break;
+ }
+ break;
-#define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i = 0; \
- const GLint n = RIGHT-LEFT; \
- GLdepth zspan[MAX_WIDTH]; \
- GLfloat fogspan[MAX_WIDTH]; \
- GLchan rgba[MAX_WIDTH][4]; \
- (void)uu; /* please GCC */ \
- if (n > 0) { \
- GLchan *dest = rgba[0]; \
- GLfloat SS = ss * sscale; \
- GLfloat TT = tt * tscale; \
- GLfloat dSdx = dsdx * sscale; \
- GLfloat dTdx = dtdx * tscale; \
- GLfloat x_tex; \
- GLfloat y_tex; \
- GLfloat dx_tex; \
- GLfloat dy_tex; \
- if (n<5) /* When line very short, setup-time > speed-gain. */ \
- goto old_span; /* So: take old method */ \
- x_tex = SS / vv, \
- y_tex = TT / vv; \
- dx_tex = (SS + n * dSdx) / (vv + n * dvdx) - x_tex, \
- dy_tex = (TT + n * dTdx) / (vv + n * dvdx) - y_tex; \
- /* Choose between walking over texture or over pixelline: */ \
- /* If there are few texels, walk over texture otherwise */ \
- /* walk over pixelarray. The quotient on the right side */ \
- /* should give the timeratio needed to draw one texel in */ \
- /* comparison to one pixel. Depends on CPU. */ \
- if (dx_tex*dx_tex + dy_tex*dy_tex < (n*n)/16) { \
- x_tex += BIAS; \
- y_tex += BIAS; \
- if (dx_tex*dx_tex > dy_tex*dy_tex) { \
- /* if (FABSF(dx_tex) > FABSF(dy_tex)) */ \
- GLfloat nominator = - SS - vv * BIAS; \
- GLfloat denominator = dvdx * BIAS + dSdx; \
- GLfloat dy_dx; \
- GLfloat dx_dy; \
- if (dy_tex != 0.0f) { \
- dy_dx = dy_tex / dx_tex; \
- dx_dy = 1.0f/dy_dx; \
- } \
- else \
- dy_dx = 0.0f; \
- if (dx_tex > 0.0f) { \
- if (dy_tex > 0.0f) { \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN1(NEAREST_RGB;MODULATE,3, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN1(NEAREST_RGB_REPLACE,3, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN1(NEAREST_RGB;BLEND,3, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN1(NEAREST_RGB;ADD,3, Y_X_TEX_COORD); \
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN1(NEAREST_RGBA;MODULATE,4, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN1(NEAREST_RGBA;DECAL,4, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN1(NEAREST_RGBA;BLEND,4, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN1(NEAREST_RGBA;ADD,4, Y_X_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN1(NEAREST_RGBA_REPLACE,4, Y_X_TEX_COORD);\
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- } \
- } \
- else { /* dy_tex <= 0.0f */ \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN2(NEAREST_RGB;MODULATE,3, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN2(NEAREST_RGB_REPLACE,3, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN2(NEAREST_RGB;BLEND,3, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN2(NEAREST_RGB;ADD,3, Y_X_TEX_COORD); \
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN2(NEAREST_RGBA;MODULATE,4, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN2(NEAREST_RGBA;DECAL,4, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN2(NEAREST_RGBA;BLEND,4, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN2(NEAREST_RGBA;ADD,4, Y_X_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN2(NEAREST_RGBA_REPLACE,4, Y_X_TEX_COORD);\
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- } \
- } \
- } \
- else { /* dx_tex < 0.0f */ \
- if (dy_tex > 0.0f) { \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN3(NEAREST_RGB;MODULATE,3, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN3(NEAREST_RGB_REPLACE,3, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN3(NEAREST_RGB;BLEND,3, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN3(NEAREST_RGB;ADD,3, Y_X_TEX_COORD); \
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN3(NEAREST_RGBA;MODULATE,4, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN3(NEAREST_RGBA;DECAL,4, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN3(NEAREST_RGBA;BLEND,4, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN3(NEAREST_RGBA;ADD,4, Y_X_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN3(NEAREST_RGBA_REPLACE,4, Y_X_TEX_COORD);\
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- } \
- } \
- else { /* dy_tex <= 0.0f */ \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN4(NEAREST_RGB;MODULATE,3, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN4(NEAREST_RGB_REPLACE,3, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN4(NEAREST_RGB;BLEND,3, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN4(NEAREST_RGB;ADD,3, Y_X_TEX_COORD); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN4(NEAREST_RGBA;MODULATE,4, Y_X_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN4(NEAREST_RGBA;DECAL,4, Y_X_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN4(NEAREST_RGBA;BLEND,4, Y_X_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN4(NEAREST_RGBA;ADD,4, Y_X_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN4(NEAREST_RGBA_REPLACE,4, Y_X_TEX_COORD);\
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- } \
- } \
- } \
- } \
- else { /* FABSF(dx_tex) > FABSF(dy_tex) */ \
- GLfloat swap; \
- GLfloat dy_dx; \
- GLfloat dx_dy; \
- GLfloat nominator, denominator; \
- if (dx_tex == 0.0f /* && dy_tex == 0.0f*/) \
- goto old_span; /* case so special, that use old */ \
- /* swap some x-values and y-values */ \
- SS = TT; \
- dSdx = dTdx; \
- swap = x_tex, x_tex = y_tex, y_tex = swap; \
- swap = dx_tex, dx_tex = dy_tex, dy_tex = swap; \
- nominator = - SS - vv * BIAS; \
- denominator = dvdx * BIAS + dSdx; \
- if (dy_tex != 0.0f) { \
- dy_dx = dy_tex / dx_tex; \
- dx_dy = 1.0f/dy_dx; \
- } \
- else \
- dy_dx = 0.0f; \
- if (dx_tex > 0.0f) { \
- if (dy_tex > 0.0f) { \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN1(NEAREST_RGB;MODULATE,3, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN1(NEAREST_RGB_REPLACE,3, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN1(NEAREST_RGB;BLEND,3, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN1(NEAREST_RGB;ADD,3, X_Y_TEX_COORD); \
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN1(NEAREST_RGBA;MODULATE,4, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN1(NEAREST_RGBA;DECAL,4, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN1(NEAREST_RGBA;BLEND,4, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN1(NEAREST_RGBA;ADD,4, X_Y_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN1(NEAREST_RGBA_REPLACE,4, X_Y_TEX_COORD);\
- break; \
- default: \
- abort(); \
- } \
- break; \
- } \
- } \
- else { /* dy_tex <= 0.0f */ \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN2(NEAREST_RGB;MODULATE,3, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN2(NEAREST_RGB_REPLACE,3, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN2(NEAREST_RGB;BLEND,3, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN2(NEAREST_RGB;ADD,3, X_Y_TEX_COORD); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN2(NEAREST_RGBA;MODULATE,4, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN2(NEAREST_RGBA;DECAL,4, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN2(NEAREST_RGBA;BLEND,4, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN2(NEAREST_RGBA;ADD,4, X_Y_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN2(NEAREST_RGBA_REPLACE,4, X_Y_TEX_COORD);\
- break; \
- default: \
- abort(); \
- } \
- break; \
- } \
- } \
- } \
- else { /* dx_tex < 0.0f */ \
- if (dy_tex > 0.0f) { \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN3(NEAREST_RGB;MODULATE,3, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN3(NEAREST_RGB_REPLACE,3, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN3(NEAREST_RGB;BLEND,3, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN3(NEAREST_RGB;ADD,3, X_Y_TEX_COORD); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN3(NEAREST_RGBA;MODULATE,4, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN3(NEAREST_RGBA;DECAL,4, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN3(NEAREST_RGBA;BLEND,4, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN3(NEAREST_RGBA;ADD,4, X_Y_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN3(NEAREST_RGBA_REPLACE,4, X_Y_TEX_COORD);\
- break; \
- default: \
- abort(); \
- } \
- break; \
- } \
- } \
- else { /* dy_tex <= 0.0f */ \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN4(NEAREST_RGB;MODULATE,3, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN4(NEAREST_RGB_REPLACE,3, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN4(NEAREST_RGB;BLEND,3, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN4(NEAREST_RGB;ADD,3, X_Y_TEX_COORD); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- SPAN4(NEAREST_RGBA;MODULATE,4, X_Y_TEX_COORD);\
- break; \
- case GL_DECAL: \
- SPAN4(NEAREST_RGBA;DECAL,4, X_Y_TEX_COORD); \
- break; \
- case GL_BLEND: \
- SPAN4(NEAREST_RGBA;BLEND,4, X_Y_TEX_COORD); \
- break; \
- case GL_ADD: \
- SPAN4(NEAREST_RGBA;ADD,4, X_Y_TEX_COORD); \
- break; \
- case GL_REPLACE: \
- SPAN4(NEAREST_RGBA_REPLACE,4, X_Y_TEX_COORD);\
- break; \
- default: \
- abort(); \
- } \
- break; \
- } \
- } \
- } \
- } \
- } \
- else { \
- old_span: \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- OLD_SPAN(NEAREST_RGB;MODULATE,3); \
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- OLD_SPAN(NEAREST_RGB_REPLACE,3); \
- break; \
- case GL_BLEND: \
- OLD_SPAN(NEAREST_RGB;BLEND,3); \
- break; \
- case GL_ADD: \
- OLD_SPAN(NEAREST_RGB;ADD,3); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch(envmode) { \
- case GL_MODULATE: \
- OLD_SPAN(NEAREST_RGBA;MODULATE,4); \
- break; \
- case GL_DECAL: \
- OLD_SPAN(NEAREST_RGBA;DECAL,4); \
- break; \
- case GL_BLEND: \
- OLD_SPAN(NEAREST_RGBA;BLEND,4); \
- break; \
- case GL_ADD: \
- OLD_SPAN(NEAREST_RGBA;ADD,4); \
- break; \
- case GL_REPLACE: \
- OLD_SPAN(NEAREST_RGBA_REPLACE,4); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- } \
- } \
- _mesa_write_rgba_span( ctx, n, LEFT, Y, zspan, \
- fogspan, rgba, NULL, GL_POLYGON); \
- span.red = span.green = span.blue = span.alpha = 0; \
- } \
- } \
+ case GL_LINEAR:
+ switch (info->format) {
+ case GL_RGB:
+ switch (info->envmode) {
+ case GL_MODULATE:
+ SPAN_LINEAR(LINEAR_RGB;MODULATE,3);
+ break;
+ case GL_DECAL:
+ case GL_REPLACE:
+ SPAN_LINEAR(LINEAR_RGB;REPLACE,3);
+ break;
+ case GL_BLEND:
+ SPAN_LINEAR(LINEAR_RGB;BLEND,3);
+ break;
+ case GL_ADD:
+ SPAN_LINEAR(LINEAR_RGB;ADD,3);
+ break;
+ default:
+ _mesa_problem(ctx, "bad tex env mode (7) in SPAN_LINEAR");
+ return;
+ }
+ break;
+ case GL_RGBA:
+ switch (info->envmode) {
+ case GL_MODULATE:
+ SPAN_LINEAR(LINEAR_RGBA;MODULATE,4);
+ break;
+ case GL_DECAL:
+ SPAN_LINEAR(LINEAR_RGBA;DECAL,4);
+ break;
+ case GL_BLEND:
+ SPAN_LINEAR(LINEAR_RGBA;BLEND,4);
+ break;
+ case GL_ADD:
+ SPAN_LINEAR(LINEAR_RGBA;ADD,4);
+ break;
+ case GL_REPLACE:
+ SPAN_LINEAR(LINEAR_RGBA;REPLACE,4);
+ break;
+ default:
+ _mesa_problem(ctx, "bad tex env mode (8) in SPAN_LINEAR");
+ return;
+ }
+ break;
+ }
+ break;
+ }
+
+ ASSERT(span->arrayMask & SPAN_RGBA);
+ _swrast_write_rgba_span(ctx, span);
-#include "s_tritemp.h"
-#undef OLD_SPAN
-#undef SPAN1
-#undef SPAN2
-#undef SPAN3
-#undef SPAN4
-#undef X_Y_TEX_COORD
-#undef Y_X_TEX_COORD
-#undef DRAW_LINE
-#undef BIAS
+#undef SPAN_NEAREST
+#undef SPAN_LINEAR
}
-#endif
-#if 0 /* XXX disabled because of texcoord interpolation errors */
/*
* Render an perspective corrected RGB/RGBA textured triangle.
* The Q (aka V in Mesa) coordinate must be zero such that the divide
* by interpolated Q/W comes out right.
*
- * This function written by Klaus Niederkrueger <klaus@math.leidenuniv.nl>
- * Send all questions and bug reports to him.
*/
-static void lin_persp_textured_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
+#define NAME persp_textured_triangle
#define INTERP_Z 1
+#define INTERP_W 1
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#define INTERP_RGB 1
#define INTERP_TEX 1
#define SETUP_CODE \
- struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
- struct gl_texture_object *obj = unit->Current2D; \
+ struct persp_info info; \
+ const struct gl_texture_unit *unit = ctx->Texture.Unit+0; \
+ const struct gl_texture_object *obj = unit->Current2D; \
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; \
- GLchan *texture = obj->Image[b]->Data; \
- const GLint smask = (obj->Image[b]->Width - 1); \
- const GLint tmask = (obj->Image[b]->Height - 1); \
- const GLint format = obj->Image[b]->Format; \
- const GLint envmode = unit->EnvMode; \
- GLfloat sscale, tscale; \
- GLint comp, tbytesline, tsize; \
- GLfixed er, eg, eb, ea; \
- GLint tr, tg, tb, ta; \
- if (!texture) { \
+ info.texture = (const GLchan *) obj->Image[0][b]->Data; \
+ info.twidth_log2 = obj->Image[0][b]->WidthLog2; \
+ info.smask = obj->Image[0][b]->Width - 1; \
+ info.tmask = obj->Image[0][b]->Height - 1; \
+ info.format = obj->Image[0][b]->Format; \
+ info.filter = obj->MinFilter; \
+ info.envmode = unit->EnvMode; \
+ \
+ if (info.envmode == GL_BLEND) { \
+ /* potential off-by-one error here? (1.0f -> 2048 -> 0) */ \
+ 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 */ \
return; \
} \
- if (envmode == GL_BLEND || envmode == GL_ADD) { \
- er = FloatToFixed(unit->EnvColor[RCOMP]); \
- eg = FloatToFixed(unit->EnvColor[GCOMP]); \
- eb = FloatToFixed(unit->EnvColor[BCOMP]); \
- ea = FloatToFixed(unit->EnvColor[ACOMP]); \
- } \
- switch (format) { \
+ \
+ switch (info.format) { \
case GL_ALPHA: \
case GL_LUMINANCE: \
case GL_INTENSITY: \
- comp = 1; \
- break; \
+ info.tbytesline = obj->Image[0][b]->Width; \
+ break; \
case GL_LUMINANCE_ALPHA: \
- comp = 2; \
- break; \
+ info.tbytesline = obj->Image[0][b]->Width * 2; \
+ break; \
case GL_RGB: \
- comp = 3; \
- break; \
+ info.tbytesline = obj->Image[0][b]->Width * 3; \
+ break; \
case GL_RGBA: \
- comp = 4; \
- break; \
+ info.tbytesline = obj->Image[0][b]->Width * 4; \
+ break; \
default: \
- _mesa_problem(NULL, "Bad texture format in lin_persp_texture_triangle"); \
- return; \
- } \
- sscale = FIXED_SCALE * twidth; \
- tscale = FIXED_SCALE * theight; \
- tbytesline = obj->Image[b]->Width * comp; \
- tsize = theight * tbytesline;
-
-
-#define SPAN(DO_TEX,COMP) \
- for (i=0;i<n;i++) { \
- GLfloat invQ = 1.0f / vv; \
- GLfixed span.intTex[0] = (int)(SS * invQ); \
- GLfixed span.intTex[1] = (int)(TT * invQ); \
- GLint s = FixedToInt(span.intTex[0]) & smask; \
- GLint t = FixedToInt(span.intTex[1]) & tmask; \
- GLint sf = span.intTex[0] & FIXED_FRAC_MASK; \
- GLint tf = span.intTex[1] & FIXED_FRAC_MASK; \
- GLint si = FIXED_FRAC_MASK - sf; \
- GLint ti = FIXED_FRAC_MASK - tf; \
- GLint pos = COMP * ((t << twidth_log2) + s); \
- GLchan *tex00 = texture + pos; \
- GLchan *tex10 = tex00 + tbytesline; \
- GLchan *tex01 = tex00 + COMP; \
- GLchan *tex11 = tex10 + COMP; \
- if (t == tmask) { \
- tex10 -= tsize; \
- tex11 -= tsize; \
- } \
- if (s == smask) { \
- tex01 -= tbytesline; \
- tex11 -= 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; \
- span.alpha += span.alphaStep; \
- SS += dSdx; \
- TT += dTdx; \
- vv += dvdx; \
- dest += 4; \
- }
+ _mesa_problem(NULL, "Bad texture format in persp_textured_triangle");\
+ return; \
+ } \
+ info.tsize = obj->Image[0][b]->Height * info.tbytesline;
-#define INNER_LOOP( LEFT, RIGHT, Y ) \
- { \
- GLint i; \
- const GLint n = RIGHT-LEFT; \
- GLdepth zspan[MAX_WIDTH]; \
- GLfloat fogspan[MAX_WIDTH]; \
- GLchan rgba[MAX_WIDTH][4]; \
- (void) uu; /* please GCC */ \
- if (n > 0) { \
- GLfloat SS = ss * sscale; \
- GLfloat TT = tt * tscale; \
- GLfloat dSdx = dsdx * sscale; \
- GLfloat dTdx = dtdx * tscale; \
- GLchan *dest = rgba[0]; \
- SS -= 0.5f * FIXED_SCALE * vv; \
- TT -= 0.5f * FIXED_SCALE * vv; \
- switch (format) { \
- case GL_RGB: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN(LINEAR_RGB;MODULATE,3); \
- break; \
- case GL_DECAL: \
- case GL_REPLACE: \
- SPAN(LINEAR_RGB;REPLACE,3); \
- break; \
- case GL_BLEND: \
- SPAN(LINEAR_RGB;BLEND,3); \
- break; \
- case GL_ADD: \
- SPAN(LINEAR_RGB;ADD,3); \
- break; \
- default: \
- abort(); \
- } \
- break; \
- case GL_RGBA: \
- switch (envmode) { \
- case GL_MODULATE: \
- SPAN(LINEAR_RGBA;MODULATE,4); \
- break; \
- case GL_DECAL: \
- SPAN(LINEAR_RGBA;DECAL,4); \
- break; \
- case GL_BLEND: \
- SPAN(LINEAR_RGBA;BLEND,4); \
- break; \
- case GL_REPLACE: \
- SPAN(LINEAR_RGBA;REPLACE,4); \
- break; \
- case GL_ADD: \
- SPAN(LINEAR_RGBA;ADD,4); \
- break; \
- default: /* unexpected env mode */ \
- abort(); \
- } \
- } \
- _mesa_write_rgba_span(ctx, n, LEFT, Y, zspan, \
- fogspan, rgba, NULL, \
- GL_POLYGON); \
- } \
- }
+#define RENDER_SPAN( span ) \
+ span.interpMask &= ~SPAN_RGBA; \
+ span.arrayMask |= SPAN_RGBA; \
+ fast_persp_span(ctx, &span, &info);
#include "s_tritemp.h"
-#undef SPAN
-}
-#endif
-/*
- * 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].
- */
-static void
-rasterize_span(GLcontext *ctx, const struct triangle_span *span)
-{
- GLchan rgba[MAX_WIDTH][4];
- GLchan spec[MAX_WIDTH][4];
- GLuint index[MAX_WIDTH];
- GLuint z[MAX_WIDTH];
- GLfloat fog[MAX_WIDTH];
- GLfloat sTex[MAX_WIDTH], tTex[MAX_WIDTH], rTex[MAX_WIDTH];
- GLfloat lambda[MAX_WIDTH];
- GLfloat msTex[MAX_TEXTURE_UNITS][MAX_WIDTH];
- GLfloat mtTex[MAX_TEXTURE_UNITS][MAX_WIDTH];
- GLfloat mrTex[MAX_TEXTURE_UNITS][MAX_WIDTH];
- GLfloat mLambda[MAX_TEXTURE_UNITS][MAX_WIDTH];
-
- if (span->activeMask & SPAN_RGBA) {
- GLfixed r = span->red;
- GLfixed g = span->green;
- GLfixed b = span->blue;
- GLfixed a = span->alpha;
- GLuint i;
- for (i = 0; i < span->count; i++) {
- rgba[i][RCOMP] = FixedToInt(r);
- rgba[i][GCOMP] = FixedToInt(g);
- rgba[i][BCOMP] = FixedToInt(b);
- rgba[i][ACOMP] = FixedToInt(a);
- r += span->redStep;
- g += span->greenStep;
- b += span->blueStep;
- a += span->alphaStep;
- }
- }
- if (span->activeMask & SPAN_SPEC) {
- GLfixed r = span->specRed;
- GLfixed g = span->specGreen;
- GLfixed b = span->specBlue;
- GLuint i;
- for (i = 0; i < span->count; i++) {
- spec[i][RCOMP] = FixedToInt(r);
- spec[i][GCOMP] = FixedToInt(g);
- spec[i][BCOMP] = FixedToInt(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");
- }
-}
+#endif /* CHAN_BITS != GL_FLOAT */
* Render a smooth-shaded, textured, RGBA triangle.
* Interpolate S,T,R with perspective correction, w/out mipmapping.
*/
-static void general_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 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; \
- if (flatShade) { \
- rFlat = IntToFixed(v2->color[RCOMP]); \
- gFlat = IntToFixed(v2->color[GCOMP]); \
- bFlat = IntToFixed(v2->color[BCOMP]); \
- aFlat = IntToFixed(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]; \
- GLfloat sSpan[MAX_WIDTH], tSpan[MAX_WIDTH], uSpan[MAX_WIDTH]; \
- 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] = FixedToInt(span.red); \
- rgbaSpan[i][GCOMP] = FixedToInt(span.green); \
- rgbaSpan[i][BCOMP] = FixedToInt(span.blue); \
- rgbaSpan[i][ACOMP] = FixedToInt(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 );
-
-#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 NAME general_textured_triangle
#define INTERP_Z 1
+#define INTERP_W 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 = IntToFixed(v2->color[RCOMP]); \
- gFlat = IntToFixed(v2->color[GCOMP]); \
- bFlat = IntToFixed(v2->color[BCOMP]); \
- aFlat = IntToFixed(v2->color[ACOMP]); \
- srFlat = IntToFixed(v2->specular[RCOMP]); \
- sgFlat = IntToFixed(v2->specular[GCOMP]); \
- sbFlat = IntToFixed(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 ) _swrast_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 = IntToFixed(v2->color[RCOMP]); \
- gFlat = IntToFixed(v2->color[GCOMP]); \
- bFlat = IntToFixed(v2->color[BCOMP]); \
- aFlat = IntToFixed(v2->color[ACOMP]); \
- srFlat = IntToFixed(v2->specular[RCOMP]); \
- sgFlat = IntToFixed(v2->specular[GCOMP]); \
- sbFlat = IntToFixed(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 = IntToFixed(v2->color[RCOMP]); \
- gFlat = IntToFixed(v2->color[GCOMP]); \
- bFlat = IntToFixed(v2->color[BCOMP]); \
- aFlat = IntToFixed(v2->color[ACOMP]); \
- srFlat = IntToFixed(v2->specular[RCOMP]); \
- sgFlat = IntToFixed(v2->specular[GCOMP]); \
- sbFlat = IntToFixed(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 )
-{
-
+#define NAME multitextured_triangle
#define INTERP_Z 1
+#define INTERP_W 1
#define INTERP_FOG 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
#define INTERP_RGB 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 = IntToFixed(v2->color[RCOMP]); \
- gFlat = IntToFixed(v2->color[GCOMP]); \
- bFlat = IntToFixed(v2->color[BCOMP]); \
- aFlat = IntToFixed(v2->color[ACOMP]); \
- srFlat = IntToFixed(v2->specular[RCOMP]); \
- sgFlat = IntToFixed(v2->specular[GCOMP]); \
- sbFlat = IntToFixed(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 ) _swrast_write_texture_span(ctx, &span);
#include "s_tritemp.h"
-}
-static void occlusion_zless_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
-{
- if (ctx->OcclusionResult) {
- return;
- }
-
+/*
+ * Special tri function for occlusion testing
+ */
+#define NAME occlusion_zless_triangle
#define DO_OCCLUSION_TEST
#define INTERP_Z 1
#define DEPTH_TYPE DEFAULT_SOFTWARE_DEPTH_TYPE
-
+#define SETUP_CODE \
+ if (ctx->OcclusionResult && !ctx->Occlusion.Active) { \
+ return; \
+ }
#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; \
- return; \
+ ctx->Occlusion.PassedCounter++; \
} \
span.z += span.zStep; \
}
-
#include "s_tritemp.h"
-}
-static void nodraw_triangle( GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2 )
+
+
+static void
+nodraw_triangle( GLcontext *ctx,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2 )
{
(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->RenderMode==GL_RENDER) {
if (ctx->Polygon.SmoothFlag) {
- _mesa_set_aa_triangle_function(ctx);
+ _swrast_set_aa_triangle_function(ctx);
ASSERT(swrast->Triangle);
return;
}
- if (ctx->Depth.OcclusionTest &&
+ /* special case for occlusion testing */
+ if ((ctx->Depth.OcclusionTest || ctx->Occlusion.Active) &&
ctx->Depth.Test &&
ctx->Depth.Mask == GL_FALSE &&
ctx->Depth.Func == GL_LESS &&
}
}
- if (ctx->Texture._ReallyEnabled) {
+ if (ctx->Texture._EnabledCoordUnits || ctx->FragmentProgram.Enabled) {
/* 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;
GLenum minFilter, magFilter, envMode;
GLint format;
texObj2D = ctx->Texture.Unit[0].Current2D;
- texImg = texObj2D ? texObj2D->Image[texObj2D->BaseLevel] : NULL;
+ texImg = texObj2D ? texObj2D->Image[0][texObj2D->BaseLevel] : NULL;
format = texImg ? texImg->TexFormat->MesaFormat : -1;
minFilter = texObj2D ? texObj2D->MinFilter : (GLenum) 0;
magFilter = texObj2D ? texObj2D->MagFilter : (GLenum) 0;
envMode = ctx->Texture.Unit[0].EnvMode;
- /* First see if we can used an optimized 2-D texture function */
- if (ctx->Texture._ReallyEnabled==TEXTURE0_2D
+ /* First see if we can use an optimized 2-D texture function */
+ if (ctx->Texture._EnabledCoordUnits == 1
+ && !ctx->FragmentProgram.Enabled
+ && ctx->Texture.Unit[0]._ReallyEnabled == TEXTURE_2D_BIT
&& texObj2D->WrapS==GL_REPEAT
&& texObj2D->WrapT==GL_REPEAT
+ && texObj2D->_IsPowerOfTwo
&& 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 (ctx->Texture.Unit[0].EnvMode==GL_ADD) {
- USE(general_textured_triangle);
- }
- else {
- USE(affine_textured_triangle);
- }
+#if (CHAN_BITS == 16 || CHAN_BITS == 32)
+ USE(general_textured_triangle);
+#else
+ USE(affine_textured_triangle);
+#endif
}
}
else {
-#if 00 /* XXX these function have problems with texture coord interpolation */
- if (filter==GL_NEAREST) {
- USE(near_persp_textured_triangle);
- }
- else {
- USE(lin_persp_textured_triangle);
- }
-#endif
+#if (CHAN_BITS == 16 || CHAN_BITS == 32)
USE(general_textured_triangle);
+#else
+ USE(persp_textured_triangle);
+#endif
}
}
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 (swrast->_MultiTextureEnabled) {
- 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._EnabledCoordUnits > 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._EnabledCoordUnits);
if (ctx->Light.ShadeModel==GL_SMOOTH) {
/* smooth shaded, no texturing, stippled or some raster ops */
if (rgbmode) {
}
}
else if (ctx->RenderMode==GL_FEEDBACK) {
- USE(_mesa_feedback_triangle);
+ USE(_swrast_feedback_triangle);
}
else {
/* GL_SELECT mode */
- USE(_mesa_select_triangle);
+ USE(_swrast_select_triangle);
}
}
projects / mesa.git / blobdiff