* 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_VARYING - if defined, interpolate GLSL varyings
+ * 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 )
{
+ const SWcontext *swrast = SWRAST_CONTEXT(ctx);
SWspan span;
GLuint interpFlags = 0;
GLint x0 = (GLint) vert0->win[0];
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;
+/*ctx->Visual.depthBits;*/
#endif
#ifdef PIXEL_ADDRESS
PIXEL_TYPE *pixelPtr;
SETUP_CODE
#endif
+ (void) swrast;
+
/* Cull primitives with malformed coordinates.
*/
{
}
else {
/* don't use fixed point */
- span.z = (GLint) vert0->win[2];
+ span.z = (GLuint) vert0->win[2];
span.zStep = (GLint) ((vert1->win[2] - vert0->win[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;
- {
- 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;
- }
+ span.attrStart[FRAG_ATTRIB_FOGC][0] = vert0->attrib[FRAG_ATTRIB_FOGC][0];
+ span.attrStepX[FRAG_ATTRIB_FOGC][0] = (vert1->attrib[FRAG_ATTRIB_FOGC][0]
+ - vert0->attrib[FRAG_ATTRIB_FOGC][0]) / numPixels;
#endif
-#ifdef INTERP_MULTITEX
- interpFlags |= SPAN_TEXTURE;
+#if defined(INTERP_ATTRIBS)
+ interpFlags |= (SPAN_TEXTURE | SPAN_VARYING);
{
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;
- }
- }
- }
-#endif
-#ifdef INTERP_VARYING
- interpFlags |= SPAN_VARYING;
- {
- const GLfloat invLen = 1.0F / numPixels;
- const GLbitfield inputsUsed = ctx->FragmentProgram._Current ?
- ctx->FragmentProgram._Current->Base.InputsRead : 0x0;
const GLfloat invw0 = vert0->win[3];
const GLfloat invw1 = vert1->win[3];
- GLuint v;
- for (v = 0; v < MAX_VARYING; v++) {
- if (inputsUsed & FRAG_BIT_VAR(v)) {
- GLfloat ds, dt, dr, dq;
- span.var[v][0] = invw0 * vert0->varying[v][0];
- span.var[v][1] = invw0 * vert0->varying[v][1];
- span.var[v][2] = invw0 * vert0->varying[v][2];
- span.var[v][3] = invw0 * vert0->varying[v][3];
- ds = (invw1 * vert1->varying[v][0]) - span.var[v][0];
- dt = (invw1 * vert1->varying[v][1]) - span.var[v][1];
- dr = (invw1 * vert1->varying[v][2]) - span.var[v][2];
- dq = (invw1 * vert1->varying[v][3]) - span.var[v][3];
- span.varStepX[v][0] = ds * invLen;
- span.varStepX[v][1] = dt * invLen;
- span.varStepX[v][2] = dr * invLen;
- span.varStepX[v][3] = dq * invLen;
- span.varStepY[v][0] = 0.0F;
- span.varStepY[v][1] = 0.0F;
- span.varStepY[v][2] = 0.0F;
- span.varStepY[v][3] = 0.0F;
- }
- }
+ ATTRIB_LOOP_BEGIN
+ GLfloat ds, dt, dr, dq;
+ span.attrStart[attr][0] = invw0 * vert0->attrib[attr][0];
+ span.attrStart[attr][1] = invw0 * vert0->attrib[attr][1];
+ span.attrStart[attr][2] = invw0 * vert0->attrib[attr][2];
+ span.attrStart[attr][3] = invw0 * vert0->attrib[attr][3];
+ ds = (invw1 * vert1->attrib[attr][0]) - span.attrStart[attr][0];
+ dt = (invw1 * vert1->attrib[attr][1]) - span.attrStart[attr][1];
+ dr = (invw1 * vert1->attrib[attr][2]) - span.attrStart[attr][2];
+ dq = (invw1 * vert1->attrib[attr][3]) - span.attrStart[attr][3];
+ span.attrStepX[attr][0] = ds * invLen;
+ span.attrStepX[attr][1] = dt * invLen;
+ span.attrStepX[attr][2] = dr * invLen;
+ span.attrStepX[attr][3] = dq * invLen;
+ span.attrStepY[attr][0] = 0.0F;
+ span.attrStepY[attr][1] = 0.0F;
+ span.attrStepY[attr][2] = 0.0F;
+ span.attrStepY[attr][3] = 0.0F;
+ ATTRIB_LOOP_END
}
#endif
INIT_SPAN(span, GL_LINE, numPixels, interpFlags, SPAN_XY);
/* Need these for fragment prog texcoord interpolation */
- span.w = 1.0F;
- span.dwdx = 0.0F;
- span.dwdy = 0.0F;
+ span.attrStart[FRAG_ATTRIB_WPOS][3] = 1.0F;
+ span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
+ span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
/*
* Draw
#undef INTERP_FOG
#undef INTERP_RGBA
#undef INTERP_SPEC
-#undef INTERP_TEX
-#undef INTERP_MULTITEX
+#undef INTERP_ATTRIBS
#undef INTERP_INDEX
#undef PIXEL_ADDRESS
#undef PIXEL_TYPE
projects / mesa.git / blobdiff