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authorBrian <brian@yutani.localnet.net>2007-05-20 12:27:39 -0600
committerBrian <brian@yutani.localnet.net>2007-05-20 12:27:39 -0600
commit9e8a961dd7d7b717a9fb4ecdea1c1b60ea355efe (patch)
tree60c87644ec38f4693ceecbf440b120b02e2d07e6 /src/mesa/swrast/s_aatriangle.c
parentaa133a9dae53bc6aa50b88ee43deb8b34e8d0029 (diff)
Overhaul/simplify SWvertex and SWspan attribute handling.
Instead of separate fog/specular/texcoord/varying code, just treat all of them as generic attributes. Simplifies the point/line/triangle functions.
Diffstat (limited to 'src/mesa/swrast/s_aatriangle.c')
-rw-r--r--src/mesa/swrast/s_aatriangle.c89
1 files changed, 24 insertions, 65 deletions
diff --git a/src/mesa/swrast/s_aatriangle.c b/src/mesa/swrast/s_aatriangle.c
index 0d95f06a9d..66891f9fec 100644
--- a/src/mesa/swrast/s_aatriangle.c
+++ b/src/mesa/swrast/s_aatriangle.c
@@ -144,6 +144,19 @@ solve_plane_chan(GLfloat x, GLfloat y, const GLfloat plane[4])
}
+static INLINE GLfloat
+plane_dx(const GLfloat plane[4])
+{
+ return -plane[0] / plane[2];
+}
+
+static INLINE GLfloat
+plane_dy(const GLfloat plane[4])
+{
+ return -plane[1] / plane[2];
+}
+
+
/*
* Compute how much (area) of the given pixel is inside the triangle.
@@ -337,7 +350,6 @@ compute_coveragei(const GLfloat v0[3], const GLfloat v1[3],
}
-
static void
rgba_aa_tri(GLcontext *ctx,
const SWvertex *v0,
@@ -345,7 +357,6 @@ rgba_aa_tri(GLcontext *ctx,
const SWvertex *v2)
{
#define DO_Z
-#define DO_FOG
#define DO_RGBA
#include "s_aatritemp.h"
}
@@ -358,72 +369,21 @@ index_aa_tri(GLcontext *ctx,
const SWvertex *v2)
{
#define DO_Z
-#define DO_FOG
-#define DO_INDEX
-#include "s_aatritemp.h"
-}
-
-
-/*
- * Compute mipmap level of detail.
- * XXX we should really include the R coordinate in this computation
- * in order to do 3-D texture mipmapping.
- */
-static INLINE GLfloat
-compute_lambda(const GLfloat sPlane[4], const GLfloat tPlane[4],
- const GLfloat qPlane[4], GLfloat cx, GLfloat cy,
- GLfloat invQ, GLfloat texWidth, GLfloat texHeight)
-{
- const GLfloat s = solve_plane(cx, cy, sPlane);
- const GLfloat t = solve_plane(cx, cy, tPlane);
- const GLfloat invQ_x1 = solve_plane_recip(cx+1.0F, cy, qPlane);
- const GLfloat invQ_y1 = solve_plane_recip(cx, cy+1.0F, qPlane);
- const GLfloat s_x1 = s - sPlane[0] / sPlane[2];
- const GLfloat s_y1 = s - sPlane[1] / sPlane[2];
- const GLfloat t_x1 = t - tPlane[0] / tPlane[2];
- const GLfloat t_y1 = t - tPlane[1] / tPlane[2];
- GLfloat dsdx = s_x1 * invQ_x1 - s * invQ;
- GLfloat dsdy = s_y1 * invQ_y1 - s * invQ;
- GLfloat dtdx = t_x1 * invQ_x1 - t * invQ;
- GLfloat dtdy = t_y1 * invQ_y1 - t * invQ;
- GLfloat maxU, maxV, rho, lambda;
- dsdx = FABSF(dsdx);
- dsdy = FABSF(dsdy);
- dtdx = FABSF(dtdx);
- dtdy = FABSF(dtdy);
- maxU = MAX2(dsdx, dsdy) * texWidth;
- maxV = MAX2(dtdx, dtdy) * texHeight;
- rho = MAX2(maxU, maxV);
- lambda = LOG2(rho);
- return lambda;
-}
-
-
-static void
-tex_aa_tri(GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2)
-{
-#define DO_Z
-#define DO_FOG
-#define DO_RGBA
#define DO_ATTRIBS
+#define DO_INDEX
#include "s_aatritemp.h"
}
static void
-spec_tex_aa_tri(GLcontext *ctx,
- const SWvertex *v0,
- const SWvertex *v1,
- const SWvertex *v2)
+general_aa_tri(GLcontext *ctx,
+ const SWvertex *v0,
+ const SWvertex *v1,
+ const SWvertex *v2)
{
#define DO_Z
-#define DO_FOG
#define DO_RGBA
#define DO_ATTRIBS
-#define DO_SPEC
#include "s_aatritemp.h"
}
@@ -436,16 +396,15 @@ spec_tex_aa_tri(GLcontext *ctx,
void
_swrast_set_aa_triangle_function(GLcontext *ctx)
{
+ SWcontext *swrast = SWRAST_CONTEXT(ctx);
+
ASSERT(ctx->Polygon.SmoothFlag);
if (ctx->Texture._EnabledCoordUnits != 0
- || ctx->FragmentProgram._Current) {
- if (NEED_SECONDARY_COLOR(ctx)) {
- SWRAST_CONTEXT(ctx)->Triangle = spec_tex_aa_tri;
- }
- else {
- SWRAST_CONTEXT(ctx)->Triangle = tex_aa_tri;
- }
+ || ctx->FragmentProgram._Current
+ || swrast->_FogEnabled
+ || NEED_SECONDARY_COLOR(ctx)) {
+ SWRAST_CONTEXT(ctx)->Triangle = general_aa_tri;
}
else if (ctx->Visual.rgbMode) {
SWRAST_CONTEXT(ctx)->Triangle = rgba_aa_tri;