/*
* Mesa 3-D graphics library
- * Version: 6.5
*
- * Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 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"),
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
* The following macros may be defined to indicate what auxillary information
* must be interplated along the line:
* INTERP_Z - if defined, interpolate Z values
- * INTERP_FOG - if defined, interpolate FOG values
- * INTERP_RGBA - if defined, interpolate RGBA values
- * INTERP_SPEC - if defined, interpolate specular RGB values
- * INTERP_INDEX - if defined, interpolate color index values
- * INTERP_TEX - if defined, interpolate unit 0 texcoords
- * INTERP_MULTITEX - if defined, interpolate multi-texcoords
+ * INTERP_ATTRIBS - if defined, interpolate attribs (texcoords, varying, etc)
*
* When one can directly address pixels in the color buffer the following
* macros can be defined and used to directly compute pixel addresses during
static void
-NAME( GLcontext *ctx, const SWvertex *vert0, const SWvertex *vert1 )
+NAME( struct gl_context *ctx, const SWvertex *vert0, const SWvertex *vert1 )
{
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
SWspan span;
GLuint interpFlags = 0;
- GLint x0 = (GLint) vert0->win[0];
- GLint x1 = (GLint) vert1->win[0];
- GLint y0 = (GLint) vert0->win[1];
- GLint y1 = (GLint) vert1->win[1];
+ GLint x0 = (GLint) vert0->attrib[VARYING_SLOT_POS][0];
+ GLint x1 = (GLint) vert1->attrib[VARYING_SLOT_POS][0];
+ GLint y0 = (GLint) vert0->attrib[VARYING_SLOT_POS][1];
+ GLint y1 = (GLint) vert1->attrib[VARYING_SLOT_POS][1];
GLint dx, dy;
GLint numPixels;
GLint xstep, ystep;
#if defined(DEPTH_TYPE)
- const GLint depthBits = ctx->Visual.depthBits;
+ const GLint depthBits = ctx->DrawBuffer->Visual.depthBits;
const GLint fixedToDepthShift = depthBits <= 16 ? FIXED_SHIFT : 0;
struct gl_renderbuffer *zrb = ctx->DrawBuffer->Attachment[BUFFER_DEPTH].Renderbuffer;
#define FixedToDepth(F) ((F) >> fixedToDepthShift)
GLint zPtrXstep, zPtrYstep;
DEPTH_TYPE *zPtr;
#elif defined(INTERP_Z)
- const GLint depthBits = ctx->Visual.depthBits;
+ const GLint depthBits = ctx->DrawBuffer->Visual.depthBits;
#endif
#ifdef PIXEL_ADDRESS
PIXEL_TYPE *pixelPtr;
SETUP_CODE
#endif
+ (void) swrast;
+
/* Cull primitives with malformed coordinates.
*/
{
- GLfloat tmp = vert0->win[0] + vert0->win[1]
- + vert1->win[0] + vert1->win[1];
- if (IS_INF_OR_NAN(tmp))
+ GLfloat tmp = vert0->attrib[VARYING_SLOT_POS][0] + vert0->attrib[VARYING_SLOT_POS][1]
+ + vert1->attrib[VARYING_SLOT_POS][0] + vert1->attrib[VARYING_SLOT_POS][1];
+ if (util_is_inf_or_nan(tmp))
return;
}
/*
- printf("%s():\n", __FUNCTION__);
+ printf("%s():\n", __func__);
printf(" (%f, %f, %f) -> (%f, %f, %f)\n",
- vert0->win[0], vert0->win[1], vert0->win[2],
- vert1->win[0], vert1->win[1], vert1->win[2]);
+ vert0->attrib[VARYING_SLOT_POS][0],
+ vert0->attrib[VARYING_SLOT_POS][1],
+ vert0->attrib[VARYING_SLOT_POS][2],
+ vert1->attrib[VARYING_SLOT_POS][0],
+ vert1->attrib[VARYING_SLOT_POS][1],
+ vert1->attrib[VARYING_SLOT_POS][2]);
printf(" (%d, %d, %d) -> (%d, %d, %d)\n",
vert0->color[0], vert0->color[1], vert0->color[2],
vert1->color[0], vert1->color[1], vert1->color[2]);
if (dx == 0 && dy == 0)
return;
+ /*
+ printf("%s %d,%d %g %g %g %g %g %g %g %g\n", __func__, dx, dy,
+ vert0->attrib[VARYING_SLOT_COL1][0],
+ vert0->attrib[VARYING_SLOT_COL1][1],
+ vert0->attrib[VARYING_SLOT_COL1][2],
+ vert0->attrib[VARYING_SLOT_COL1][3],
+ vert1->attrib[VARYING_SLOT_COL1][0],
+ vert1->attrib[VARYING_SLOT_COL1][1],
+ vert1->attrib[VARYING_SLOT_COL1][2],
+ vert1->attrib[VARYING_SLOT_COL1][3]);
+ */
+
#ifdef DEPTH_TYPE
- zPtr = (DEPTH_TYPE *) zrb->GetPointer(ctx, zrb, x0, y0);
+ zPtr = (DEPTH_TYPE *) _swrast_pixel_address(zrb, x0, y0);
#endif
#ifdef PIXEL_ADDRESS
pixelPtr = (PIXEL_TYPE *) PIXEL_ADDRESS(x0,y0);
#endif
}
- ASSERT(dx >= 0);
- ASSERT(dy >= 0);
+ assert(dx >= 0);
+ assert(dy >= 0);
numPixels = MAX2(dx, dy);
/*
* Span setup: compute start and step values for all interpolated values.
*/
-#ifdef INTERP_RGBA
interpFlags |= SPAN_RGBA;
if (ctx->Light.ShadeModel == GL_SMOOTH) {
span.red = ChanToFixed(vert0->color[0]);
span.blueStep = 0;
span.alphaStep = 0;
}
-#endif
-#ifdef INTERP_SPEC
- interpFlags |= SPAN_SPEC;
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- span.specRed = ChanToFixed(vert0->specular[0]);
- span.specGreen = ChanToFixed(vert0->specular[1]);
- span.specBlue = ChanToFixed(vert0->specular[2]);
- span.specRedStep = (ChanToFixed(vert1->specular[0]) - span.specRed) / numPixels;
- span.specGreenStep = (ChanToFixed(vert1->specular[1]) - span.specBlue) / numPixels;
- span.specBlueStep = (ChanToFixed(vert1->specular[2]) - span.specGreen) / numPixels;
- }
- else {
- span.specRed = ChanToFixed(vert1->specular[0]);
- span.specGreen = ChanToFixed(vert1->specular[1]);
- span.specBlue = ChanToFixed(vert1->specular[2]);
- span.specRedStep = 0;
- span.specGreenStep = 0;
- span.specBlueStep = 0;
- }
-#endif
-#ifdef INTERP_INDEX
- interpFlags |= SPAN_INDEX;
- if (ctx->Light.ShadeModel == GL_SMOOTH) {
- span.index = FloatToFixed(vert0->index);
- span.indexStep = FloatToFixed(vert1->index - vert0->index) / numPixels;
- }
- else {
- span.index = FloatToFixed(vert1->index);
- span.indexStep = 0;
- }
-#endif
#if defined(INTERP_Z) || defined(DEPTH_TYPE)
interpFlags |= SPAN_Z;
{
if (depthBits <= 16) {
- span.z = FloatToFixed(vert0->win[2]) + FIXED_HALF;
- span.zStep = FloatToFixed(vert1->win[2] - vert0->win[2]) / numPixels;
+ span.z = FloatToFixed(vert0->attrib[VARYING_SLOT_POS][2]) + FIXED_HALF;
+ span.zStep = FloatToFixed( vert1->attrib[VARYING_SLOT_POS][2]
+ - vert0->attrib[VARYING_SLOT_POS][2]) / numPixels;
}
else {
/* don't use fixed point */
- span.z = (GLint) vert0->win[2];
- span.zStep = (GLint) ((vert1->win[2] - vert0->win[2]) / numPixels);
+ span.z = (GLuint) vert0->attrib[VARYING_SLOT_POS][2];
+ span.zStep = (GLint) (( vert1->attrib[VARYING_SLOT_POS][2]
+ - vert0->attrib[VARYING_SLOT_POS][2]) / numPixels);
}
}
#endif
-#ifdef INTERP_FOG
- interpFlags |= SPAN_FOG;
- span.fog = vert0->fog;
- span.fogStep = (vert1->fog - vert0->fog) / numPixels;
-#endif
-#ifdef INTERP_TEX
- interpFlags |= SPAN_TEXTURE;
+#if defined(INTERP_ATTRIBS)
{
- const GLfloat invw0 = vert0->win[3];
- const GLfloat invw1 = vert1->win[3];
const GLfloat invLen = 1.0F / numPixels;
- GLfloat ds, dt, dr, dq;
- span.tex[0][0] = invw0 * vert0->texcoord[0][0];
- span.tex[0][1] = invw0 * vert0->texcoord[0][1];
- span.tex[0][2] = invw0 * vert0->texcoord[0][2];
- span.tex[0][3] = invw0 * vert0->texcoord[0][3];
- ds = (invw1 * vert1->texcoord[0][0]) - span.tex[0][0];
- dt = (invw1 * vert1->texcoord[0][1]) - span.tex[0][1];
- dr = (invw1 * vert1->texcoord[0][2]) - span.tex[0][2];
- dq = (invw1 * vert1->texcoord[0][3]) - span.tex[0][3];
- span.texStepX[0][0] = ds * invLen;
- span.texStepX[0][1] = dt * invLen;
- span.texStepX[0][2] = dr * invLen;
- span.texStepX[0][3] = dq * invLen;
- span.texStepY[0][0] = 0.0F;
- span.texStepY[0][1] = 0.0F;
- span.texStepY[0][2] = 0.0F;
- span.texStepY[0][3] = 0.0F;
- }
-#endif
-#ifdef INTERP_MULTITEX
- interpFlags |= SPAN_TEXTURE;
- {
- const GLfloat invLen = 1.0F / numPixels;
- GLuint u;
- for (u = 0; u < ctx->Const.MaxTextureUnits; u++) {
- if (ctx->Texture.Unit[u]._ReallyEnabled) {
- const GLfloat invw0 = vert0->win[3];
- const GLfloat invw1 = vert1->win[3];
- GLfloat ds, dt, dr, dq;
- span.tex[u][0] = invw0 * vert0->texcoord[u][0];
- span.tex[u][1] = invw0 * vert0->texcoord[u][1];
- span.tex[u][2] = invw0 * vert0->texcoord[u][2];
- span.tex[u][3] = invw0 * vert0->texcoord[u][3];
- ds = (invw1 * vert1->texcoord[u][0]) - span.tex[u][0];
- dt = (invw1 * vert1->texcoord[u][1]) - span.tex[u][1];
- dr = (invw1 * vert1->texcoord[u][2]) - span.tex[u][2];
- dq = (invw1 * vert1->texcoord[u][3]) - span.tex[u][3];
- span.texStepX[u][0] = ds * invLen;
- span.texStepX[u][1] = dt * invLen;
- span.texStepX[u][2] = dr * invLen;
- span.texStepX[u][3] = dq * invLen;
- span.texStepY[u][0] = 0.0F;
- span.texStepY[u][1] = 0.0F;
- span.texStepY[u][2] = 0.0F;
- span.texStepY[u][3] = 0.0F;
- }
- }
+ const GLfloat invw0 = vert0->attrib[VARYING_SLOT_POS][3];
+ const GLfloat invw1 = vert1->attrib[VARYING_SLOT_POS][3];
+
+ span.attrStart[VARYING_SLOT_POS][3] = invw0;
+ span.attrStepX[VARYING_SLOT_POS][3] = (invw1 - invw0) * invLen;
+ span.attrStepY[VARYING_SLOT_POS][3] = 0.0;
+
+ ATTRIB_LOOP_BEGIN
+ if (swrast->_InterpMode[attr] == GL_FLAT) {
+ COPY_4V(span.attrStart[attr], vert1->attrib[attr]);
+ ASSIGN_4V(span.attrStepX[attr], 0.0, 0.0, 0.0, 0.0);
+ }
+ else {
+ GLuint c;
+ for (c = 0; c < 4; c++) {
+ float da;
+ span.attrStart[attr][c] = invw0 * vert0->attrib[attr][c];
+ da = (invw1 * vert1->attrib[attr][c]) - span.attrStart[attr][c];
+ span.attrStepX[attr][c] = da * invLen;
+ }
+ }
+ ASSIGN_4V(span.attrStepY[attr], 0.0, 0.0, 0.0, 0.0);
+ ATTRIB_LOOP_END
}
#endif
- INIT_SPAN(span, GL_LINE, numPixels, interpFlags, SPAN_XY);
+ INIT_SPAN(span, GL_LINE);
+ span.end = numPixels;
+ span.interpMask = interpFlags;
+ span.arrayMask = SPAN_XY;
+
+ span.facing = swrast->PointLineFacing;
- /* Need these for fragment prog texcoord interpolation */
- span.w = 1.0F;
- span.dwdx = 0.0F;
- span.dwdy = 0.0F;
/*
* Draw
#ifdef PIXEL_ADDRESS
pixelPtr = (PIXEL_TYPE*) ((GLubyte*) pixelPtr + pixelXstep);
#endif
- if (error<0) {
+ if (error < 0) {
error += errorInc;
}
else {
#undef NAME
#undef INTERP_Z
-#undef INTERP_FOG
-#undef INTERP_RGBA
-#undef INTERP_SPEC
-#undef INTERP_TEX
-#undef INTERP_MULTITEX
-#undef INTERP_INDEX
+#undef INTERP_ATTRIBS
#undef PIXEL_ADDRESS
#undef PIXEL_TYPE
#undef DEPTH_TYPE
projects / mesa.git / blobdiff