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-rw-r--r--src/mesa/swrast/s_fog.c1
-rw-r--r--src/mesa/swrast/s_fragprog.c1
-rw-r--r--src/mesa/swrast/s_points.c117
-rw-r--r--src/mesa/swrast/s_span.c2
-rw-r--r--src/mesa/swrast/s_texfilter.c19
5 files changed, 75 insertions, 65 deletions
diff --git a/src/mesa/swrast/s_fog.c b/src/mesa/swrast/s_fog.c
index ed47964a66a..7b143f6e5bb 100644
--- a/src/mesa/swrast/s_fog.c
+++ b/src/mesa/swrast/s_fog.c
@@ -168,7 +168,6 @@ _swrast_fog_rgba_span( const GLcontext *ctx, SWspan *span )
GLfloat rFog, gFog, bFog;
ASSERT(swrast->_FogEnabled);
- ASSERT(swrast->_ActiveAttribMask & FRAG_BIT_FOGC);
ASSERT(span->arrayMask & SPAN_RGBA);
/* compute (scaled) fog color */
diff --git a/src/mesa/swrast/s_fragprog.c b/src/mesa/swrast/s_fragprog.c
index 14c9868c180..6656ebc0d0c 100644
--- a/src/mesa/swrast/s_fragprog.c
+++ b/src/mesa/swrast/s_fragprog.c
@@ -113,6 +113,7 @@ init_machine(GLcontext *ctx, struct gl_program_machine *machine,
machine->DerivY = (GLfloat (*)[4]) span->attrStepY;
machine->NumDeriv = FRAG_ATTRIB_MAX;
+ /* if running a GLSL program (not ARB_fragment_program) */
if (ctx->Shader.CurrentProgram) {
/* Store front/back facing value in register FOGC.Y */
machine->Attribs[FRAG_ATTRIB_FOGC][col][1] = (GLfloat) ctx->_Facing;
diff --git a/src/mesa/swrast/s_points.c b/src/mesa/swrast/s_points.c
index d54adc8fd18..ce73365a4ea 100644
--- a/src/mesa/swrast/s_points.c
+++ b/src/mesa/swrast/s_points.c
@@ -55,7 +55,7 @@ sprite_point(GLcontext *ctx, const SWvertex *vert)
SWcontext *swrast = SWRAST_CONTEXT(ctx);
SWspan span;
GLfloat size;
- GLuint tCoords[MAX_TEXTURE_COORD_UNITS];
+ GLuint tCoords[MAX_TEXTURE_COORD_UNITS + 1];
GLuint numTcoords = 0;
GLfloat t0, dtdy;
@@ -99,57 +99,71 @@ sprite_point(GLcontext *ctx, const SWvertex *vert)
span.attrStepX[FRAG_ATTRIB_WPOS][3] = 0.0F;
span.attrStepY[FRAG_ATTRIB_WPOS][3] = 0.0F;
- ATTRIB_LOOP_BEGIN
- if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) {
- const GLuint u = attr - FRAG_ATTRIB_TEX0;
- /* a texcoord */
- if (ctx->Point.CoordReplace[u]) {
- GLfloat s, r, dsdx;
-
- s = 0.0;
- dsdx = 1.0 / size;
-
- if (ctx->Point.SpriteOrigin == GL_LOWER_LEFT) {
- t0 = 0.0;
- dtdy = 1.0 / size;
- }
- else {
- /* GL_UPPER_LEFT */
- t0 = 1.0;
- dtdy = -1.0 / size;
- }
- tCoords[numTcoords++] = attr;
-
- if (ctx->Point.SpriteRMode == GL_ZERO)
- r = 0.0F;
- else if (ctx->Point.SpriteRMode == GL_S)
- r = vert->attrib[attr][0];
- else /* GL_R */
- r = vert->attrib[attr][2];
-
- span.attrStart[attr][0] = s;
- span.attrStart[attr][1] = 0.0; /* overwritten below */
- span.attrStart[attr][2] = r;
- span.attrStart[attr][3] = 1.0;
-
- span.attrStepX[attr][0] = dsdx;
- span.attrStepX[attr][1] = 0.0;
- span.attrStepX[attr][2] = 0.0;
- span.attrStepX[attr][3] = 0.0;
-
- span.attrStepY[attr][0] = 0.0;
- span.attrStepY[attr][1] = dtdy;
- span.attrStepY[attr][2] = 0.0;
- span.attrStepY[attr][3] = 0.0;
+ {
+ GLfloat s, r, dsdx;
+
+ /* texcoord / pointcoord interpolants */
+ s = 0.0;
+ dsdx = 1.0 / size;
+ if (ctx->Point.SpriteOrigin == GL_LOWER_LEFT) {
+ t0 = 0.0;
+ dtdy = 1.0 / size;
+ }
+ else {
+ /* GL_UPPER_LEFT */
+ t0 = 1.0;
+ dtdy = -1.0 / size;
+ }
+ ATTRIB_LOOP_BEGIN
+ if (attr >= FRAG_ATTRIB_TEX0 && attr < FRAG_ATTRIB_VAR0) {
+ const GLuint u = attr - FRAG_ATTRIB_TEX0;
+ /* a texcoord */
+ if (ctx->Point.CoordReplace[u]) {
+ tCoords[numTcoords++] = attr;
+
+ if (ctx->Point.SpriteRMode == GL_ZERO)
+ r = 0.0F;
+ else if (ctx->Point.SpriteRMode == GL_S)
+ r = vert->attrib[attr][0];
+ else /* GL_R */
+ r = vert->attrib[attr][2];
+
+ span.attrStart[attr][0] = s;
+ span.attrStart[attr][1] = 0.0; /* overwritten below */
+ span.attrStart[attr][2] = r;
+ span.attrStart[attr][3] = 1.0;
+
+ span.attrStepX[attr][0] = dsdx;
+ span.attrStepX[attr][1] = 0.0;
+ span.attrStepX[attr][2] = 0.0;
+ span.attrStepX[attr][3] = 0.0;
+
+ span.attrStepY[attr][0] = 0.0;
+ span.attrStepY[attr][1] = dtdy;
+ span.attrStepY[attr][2] = 0.0;
+ span.attrStepY[attr][3] = 0.0;
+
+ continue;
+ }
+ }
+ else if (attr == FRAG_ATTRIB_FOGC) {
+ /* GLSL gl_PointCoord is stored in fog.zw */
+ span.attrStart[FRAG_ATTRIB_FOGC][2] = 0.0;
+ span.attrStart[FRAG_ATTRIB_FOGC][3] = 0.0; /* t0 set below */
+ span.attrStepX[FRAG_ATTRIB_FOGC][2] = dsdx;
+ span.attrStepX[FRAG_ATTRIB_FOGC][3] = 0.0;
+ span.attrStepY[FRAG_ATTRIB_FOGC][2] = 0.0;
+ span.attrStepY[FRAG_ATTRIB_FOGC][3] = dtdy;
+ tCoords[numTcoords++] = FRAG_ATTRIB_FOGC;
continue;
}
- }
- /* use vertex's texcoord/attrib */
- COPY_4V(span.attrStart[attr], vert->attrib[attr]);
- ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);
- ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);
- ATTRIB_LOOP_END
+ /* use vertex's texcoord/attrib */
+ COPY_4V(span.attrStart[attr], vert->attrib[attr]);
+ ASSIGN_4V(span.attrStepX[attr], 0, 0, 0, 0);
+ ASSIGN_4V(span.attrStepY[attr], 0, 0, 0, 0);
+ ATTRIB_LOOP_END;
+ }
/* compute pos, bounds and render */
{
@@ -184,7 +198,10 @@ sprite_point(GLcontext *ctx, const SWvertex *vert)
GLuint i;
/* setup texcoord T for this row */
for (i = 0; i < numTcoords; i++) {
- span.attrStart[tCoords[i]][1] = tcoord;
+ if (tCoords[i] == FRAG_ATTRIB_FOGC)
+ span.attrStart[FRAG_ATTRIB_FOGC][3] = tcoord;
+ else
+ span.attrStart[tCoords[i]][1] = tcoord;
}
/* these might get changed by span clipping */
diff --git a/src/mesa/swrast/s_span.c b/src/mesa/swrast/s_span.c
index f1e58bd3d81..000e192a4a5 100644
--- a/src/mesa/swrast/s_span.c
+++ b/src/mesa/swrast/s_span.c
@@ -1183,7 +1183,7 @@ shade_texture_span(GLcontext *ctx, SWspan *span)
if (span->primitive == GL_BITMAP && span->array->ChanType != GL_FLOAT) {
convert_color_type(span, GL_FLOAT, 0);
}
- if (span->primitive != GL_POINT) {
+ if (span->primitive != GL_POINT || ctx->Point.PointSprite) {
/* for points, we populated the arrays already */
interpolate_active_attribs(ctx, span, ~0);
}
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c
index c2a7512388e..bb4e38623c9 100644
--- a/src/mesa/swrast/s_texfilter.c
+++ b/src/mesa/swrast/s_texfilter.c
@@ -213,17 +213,10 @@ lerp_rgba_3d(GLchan result[4], GLfloat a, GLfloat b, GLfloat c,
/**
- * Compute the remainder of a divided by b, but be careful with
- * negative values so that GL_REPEAT mode works right.
+ * If A is a signed integer, A % B doesn't give the right value for A < 0
+ * (in terms of texture repeat). Just casting to unsigned fixes that.
*/
-static INLINE GLint
-repeat_remainder(GLint a, GLint b)
-{
- if (a >= 0)
- return a % b;
- else
- return (a + 1) % b + b - 1;
-}
+#define REMAINDER(A, B) ((unsigned) (A) % (unsigned) (B))
/**
@@ -246,8 +239,8 @@ repeat_remainder(GLint a, GLint b)
I1 = (I0 + 1) & (SIZE - 1); \
} \
else { \
- I0 = repeat_remainder(IFLOOR(U), SIZE); \
- I1 = repeat_remainder(I0 + 1, SIZE); \
+ I0 = REMAINDER(IFLOOR(U), SIZE); \
+ I1 = REMAINDER(I0 + 1, SIZE); \
} \
break; \
case GL_CLAMP_TO_EDGE: \
@@ -366,7 +359,7 @@ repeat_remainder(GLint a, GLint b)
if (img->_IsPowerOfTwo) \
I &= (SIZE - 1); \
else \
- I = repeat_remainder(I, SIZE); \
+ I = REMAINDER(I, SIZE); \
break; \
case GL_CLAMP_TO_EDGE: \
{ \
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 14:37:56 +0000