-/* $Id: s_texture.c,v 1.53 2002/02/17 01:58:59 brianp Exp $ */
+/* $Id: s_texture.c,v 1.54 2002/02/17 17:58:31 brianp Exp $ */
/*
* Mesa 3-D graphics library
}
+/*
+ * The lambda[] array values are always monotonic. Either the whole span
+ * will be minified, magnified, or split between the two. This function
+ * determines the subranges in [0, n-1] that are to be minified or magnified.
+ */
+static INLINE void
+compute_min_mag_ranges( GLfloat minMagThresh, GLuint n, const GLfloat lambda[],
+ GLuint *minStart, GLuint *minEnd,
+ GLuint *magStart, GLuint *magEnd )
+{
+#ifdef DEBUG
+ /* verify that lambda[] is monotonous */
+ if (n > 1) {
+ GLuint i;
+ if (lambda[0] >= lambda[n-1]) { /* decreasing */
+ for (i = 0; i < n - 1; i++) {
+ ASSERT((GLint) (lambda[i] * 100) >= (GLint) (lambda[i+1] * 100));
+ }
+ }
+ else { /* increasing */
+ for (i = 0; i < n - 1; i++) {
+ ASSERT((GLint) (lambda[i] * 100) <= (GLint) (lambda[i+1] * 100));
+ }
+ }
+ }
+#endif /* DEBUG */
+
+ /* since lambda is monotonous-array use this check first */
+ if (lambda[0] <= minMagThresh && lambda[n-1] <= minMagThresh) {
+ /* magnification for whole span */
+ *magStart = 0;
+ *magEnd = n;
+ *minStart = *minEnd = 0;
+ }
+ else if (lambda[0] > minMagThresh && lambda[n-1] > minMagThresh) {
+ /* minification for whole span */
+ *minStart = 0;
+ *minEnd = n;
+ *magStart = *magEnd = 0;
+ }
+ else {
+ /* a mix of minification and magnification */
+ GLuint i;
+ if (lambda[0] > minMagThresh) {
+ /* start with minification */
+ for (i = 1; i < n; i++) {
+ if (lambda[i] <= minMagThresh)
+ break;
+ }
+ *minStart = 0;
+ *minEnd = i;
+ *magStart = i;
+ *magEnd = n;
+ }
+ else {
+ /* start with magnification */
+ for (i = 1; i < n; i++) {
+ if (lambda[i] > minMagThresh)
+ break;
+ }
+ *magStart = 0;
+ *magEnd = i;
+ *minStart = i;
+ *minEnd = n;
+ }
+ }
+
+#ifdef DEBUG
+ /* Verify the min/mag Start/End values */
+ {
+ GLint i;
+ for (i = 0; i < n; i++) {
+ if (lambda[i] > minMagThresh) {
+ /* minification */
+ assert(i >= *minStart);
+ assert(i < *minEnd);
+ }
+ else {
+ /* magnification */
+ assert(i >= *magStart);
+ assert(i < *magEnd);
+ }
+ }
+ }
+#endif
+}
+
/**********************************************************************/
/* 1-D Texture Sampling Functions */
static void
sample_1d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4], GLfloat lambda,
- GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
- sample_1d_nearest(ctx, tObj, tObj->Image[level], texcoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ sample_1d_nearest(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ }
}
static void
sample_1d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4], GLfloat lambda,
- GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
- sample_1d_linear(ctx, tObj, tObj->Image[level], texcoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ sample_1d_linear(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ }
}
* This is really just needed in order to prevent warnings with some compilers.
*/
#if CHAN_TYPE == GL_FLOAT
-#define INTCAST
+#define CHAN_CAST
#else
-#define INTCAST (GLint)
+#define CHAN_CAST (GLchan) (GLint)
#endif
static void
sample_1d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4], GLfloat lambda,
- GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- if (level >= tObj->_MaxLevel) {
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel], texcoord, rgba);
- }
- else {
- GLchan t0[4], t1[4];
- const GLfloat f = FRAC(lambda);
- sample_1d_nearest(ctx, tObj, tObj->Image[level ], texcoord, t0);
- sample_1d_nearest(ctx, tObj, tObj->Image[level+1], texcoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ if (level >= tObj->_MaxLevel) {
+ sample_1d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ texcoord[i], rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4];
+ const GLfloat f = FRAC(lambda[i]);
+ sample_1d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
+ sample_1d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
static void
sample_1d_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4], GLfloat lambda,
- GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- if (level >= tObj->_MaxLevel) {
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel], texcoord, rgba);
- }
- else {
- GLchan t0[4], t1[4];
- const GLfloat f = FRAC(lambda);
- sample_1d_linear(ctx, tObj, tObj->Image[level ], texcoord, t0);
- sample_1d_linear(ctx, tObj, tObj->Image[level+1], texcoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ if (level >= tObj->_MaxLevel) {
+ sample_1d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ texcoord[i], rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4];
+ const GLfloat f = FRAC(lambda[i]);
+ sample_1d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
+ sample_1d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
GLfloat texcoords[][4],
const GLfloat lambda[], GLchan rgba[][4] )
{
- GLfloat MinMagThresh = SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit];
+ GLuint minStart, minEnd; /* texels with minification */
+ GLuint magStart, magEnd; /* texels with magnification */
GLuint i;
- for (i=0;i<n;i++) {
- if (lambda[i] > MinMagThresh) {
- /* minification */
- switch (tObj->MinFilter) {
- case GL_NEAREST:
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_LINEAR:
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_NEAREST_MIPMAP_NEAREST:
- sample_1d_nearest_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_NEAREST:
- sample_1d_linear_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_NEAREST_MIPMAP_LINEAR:
- sample_1d_nearest_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_LINEAR:
- sample_1d_linear_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad min filter in sample_1d_texture");
- return;
- }
+ compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
+ n, lambda, &minStart, &minEnd, &magStart, &magEnd);
+
+ if (minStart < minEnd) {
+ /* do the minified texels */
+ const GLuint m = minEnd - minStart;
+ switch (tObj->MinFilter) {
+ case GL_NEAREST:
+ for (i = minStart; i < minEnd; i++)
+ sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_LINEAR:
+ for (i = minStart; i < minEnd; i++)
+ sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_NEAREST_MIPMAP_NEAREST:
+ sample_1d_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_NEAREST:
+ sample_1d_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_NEAREST_MIPMAP_LINEAR:
+ sample_1d_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_LINEAR:
+ sample_1d_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad min filter in sample_1d_texture");
+ return;
}
- else {
- /* magnification */
- switch (tObj->MagFilter) {
- case GL_NEAREST:
- sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_LINEAR:
- sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad mag filter in sample_1d_texture");
- return;
- }
+ }
+
+ if (magStart < magEnd) {
+ /* do the magnified texels */
+ switch (tObj->MagFilter) {
+ case GL_NEAREST:
+ for (i = magStart; i < magEnd; i++)
+ sample_1d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_LINEAR:
+ for (i = magStart; i < magEnd; i++)
+ sample_1d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad mag filter in sample_1d_texture");
+ return;
}
}
}
-
-
/**********************************************************************/
/* 2-D Texture Sampling Functions */
/**********************************************************************/
ASSERT(tObj->WrapS == GL_REPEAT);
ASSERT(tObj->WrapT == GL_REPEAT);
+ ASSERT(img->Border == 0);
ASSERT(img->Format != GL_COLOR_INDEX);
COMPUTE_LINEAR_REPEAT_TEXEL_LOCATION(texcoord[0], u, width, i0, i1);
const GLfloat f = FRAC(lambda[i]);
sample_2d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
sample_2d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
- rgba[i][RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[i][GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[i][BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[i][ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
}
}
}
const GLfloat f = FRAC(lambda[i]);
sample_2d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
sample_2d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
- rgba[i][RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[i][GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[i][BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[i][ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
}
}
}
const GLfloat f = FRAC(lambda[i]);
sample_2d_linear_repeat(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
sample_2d_linear_repeat(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
- rgba[i][RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[i][GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[i][BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[i][ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
}
}
}
}
}
-#ifdef DEBUG
-static int
-span_is_monotonous (GLuint n, const GLfloat lambda[])
-{
- GLuint i;
-
- if (n <= 1) /* array too short */
- return GL_TRUE;
- else if (lambda[0] >= lambda[n-1]) { /* decreasing */
- for (i=0; i<n-1; i++)
- if (lambda[i] < lambda[i+1])
- return GL_FALSE;
- }
- else { /* increasing */
- for (i=0; i<n-1; i++)
- if (lambda[i] > lambda[i+1])
- return GL_FALSE;
- }
-
- return GL_TRUE;
-}
-#endif /* DEBUG */
/*
- * Given an array of (s,t) texture coordinate and lambda (level of detail)
+ * Given an array of texture coordinate and lambda (level of detail)
* values, return an array of texture sample.
*/
static void
const GLfloat lambda[], GLchan rgba[][4] )
{
const struct gl_texture_image *tImg = tObj->Image[tObj->BaseLevel];
- const GLfloat minMagThresh = SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit];
- GLuint i;
- GLint minStart, minEnd; /* texels with minification */
- GLint magStart, magEnd; /* texels with magnification */
+ GLuint minStart, minEnd; /* texels with minification */
+ GLuint magStart, magEnd; /* texels with magnification */
const GLboolean repeatNoBorder = (tObj->WrapS == GL_REPEAT)
&& (tObj->WrapT == GL_REPEAT)
&& (tImg->Border == 0)
&& (tImg->Format != GL_COLOR_INDEX);
-#ifdef DEBUG
- ASSERT (span_is_monotonous(n, lambda) == GL_TRUE);
-#endif /* DEBUG */
-
- /* since lambda is monotonous-array use this check first */
- if (lambda[0] <= minMagThresh && lambda[n-1] <= minMagThresh) {
- /* magnification for whole span */
- magStart = 0;
- magEnd = n;
- minStart = minEnd = 0;
- }
- else if (lambda[0] > minMagThresh && lambda[n-1] > minMagThresh) {
- /* minification for whole span */
- minStart = 0;
- minEnd = n;
- magStart = magEnd = 0;
- }
- else {
- /* a mix of minification and magnification */
- if (lambda[0] > minMagThresh) {
- /* start with minification */
- for (i = 1; i < n; i++) {
- if (lambda[i] <= minMagThresh)
- break;
- }
- minStart = 0;
- minEnd = i;
- magStart = i;
- magEnd = n;
- }
- else {
- /* start with magnification */
- for (i = 1; i < n; i++) {
- if (lambda[i] <= minMagThresh)
- break;
- }
- magStart = 0;
- magEnd = i;
- minStart = i;
- minEnd = n;
- }
- }
-
-#ifdef DEBUG
- /* Verify the min/mag Start/End values */
- {
- GLint i;
- for (i = 0; i < n; i++) {
- if (lambda[i] > minMagThresh) {
- /* minification */
- assert(i >= minStart);
- assert(i < minEnd);
- }
- else {
- /* magnification */
- assert(i >= magStart);
- assert(i < magEnd);
- }
- }
- }
-#endif
+ compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
+ n, lambda, &minStart, &minEnd, &magStart, &magEnd);
if (minStart < minEnd) {
/* do the minified texels */
- const GLuint m = (GLuint) (minEnd - minStart);
+ const GLuint m = minEnd - minStart;
switch (tObj->MinFilter) {
case GL_NEAREST:
if (repeatNoBorder) {
lambda + minStart, rgba + minStart);
break;
default:
- _mesa_problem(NULL, "Bad min filter in sample_2d_texture");
+ _mesa_problem(ctx, "Bad min filter in sample_2d_texture");
return;
}
}
if (magStart < magEnd) {
/* do the magnified texels */
- const GLuint m = (GLuint) (magEnd - magStart);
+ const GLuint m = magEnd - magStart;
switch (tObj->MagFilter) {
case GL_NEAREST:
NULL, rgba + magStart);
break;
default:
- _mesa_problem(NULL, "Bad mag filter in sample_lambda_2d");
+ _mesa_problem(ctx, "Bad mag filter in sample_lambda_2d");
}
}
}
static void
sample_3d_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4] )
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4] )
{
- GLint level;
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
- sample_3d_nearest(ctx, tObj, tObj->Image[level], texcoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ sample_3d_nearest(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ }
}
static void
sample_3d_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
- sample_3d_linear(ctx, tObj, tObj->Image[level], texcoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ sample_3d_linear(ctx, tObj, tObj->Image[level], texcoord[i], rgba[i]);
+ }
}
static void
sample_3d_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- if (level >= tObj->_MaxLevel) {
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
- texcoord, rgba);
- }
- else {
- GLchan t0[4], t1[4]; /* texels */
- const GLfloat f = FRAC(lambda);
- sample_3d_nearest(ctx, tObj, tObj->Image[level ], texcoord, t0);
- sample_3d_nearest(ctx, tObj, tObj->Image[level+1], texcoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ if (level >= tObj->_MaxLevel) {
+ sample_3d_nearest(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ texcoord[i], rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4]; /* texels */
+ const GLfloat f = FRAC(lambda[i]);
+ sample_3d_nearest(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
+ sample_3d_nearest(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
static void
sample_3d_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4] )
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- if (level >= tObj->_MaxLevel) {
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel], texcoord, rgba);
- }
- else {
- GLchan t0[4], t1[4]; /* texels */
- const GLfloat f = FRAC(lambda);
- sample_3d_linear(ctx, tObj, tObj->Image[level ], texcoord, t0);
- sample_3d_linear(ctx, tObj, tObj->Image[level+1], texcoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ if (level >= tObj->_MaxLevel) {
+ sample_3d_linear(ctx, tObj, tObj->Image[tObj->_MaxLevel],
+ texcoord[i], rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4]; /* texels */
+ const GLfloat f = FRAC(lambda[i]);
+ sample_3d_linear(ctx, tObj, tObj->Image[level ], texcoord[i], t0);
+ sample_3d_linear(ctx, tObj, tObj->Image[level+1], texcoord[i], t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4] )
{
+ GLuint minStart, minEnd; /* texels with minification */
+ GLuint magStart, magEnd; /* texels with magnification */
GLuint i;
- GLfloat MinMagThresh = SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit];
- for (i=0;i<n;i++) {
+ compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
+ n, lambda, &minStart, &minEnd, &magStart, &magEnd);
- if (lambda[i] > MinMagThresh) {
- /* minification */
- switch (tObj->MinFilter) {
- case GL_NEAREST:
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_LINEAR:
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_NEAREST_MIPMAP_NEAREST:
- sample_3d_nearest_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_NEAREST:
- sample_3d_linear_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_NEAREST_MIPMAP_LINEAR:
- sample_3d_nearest_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_LINEAR:
- sample_3d_linear_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad min filterin sample_3d_texture");
- }
+ if (minStart < minEnd) {
+ /* do the minified texels */
+ GLuint m = minEnd - minStart;
+ switch (tObj->MinFilter) {
+ case GL_NEAREST:
+ for (i = minStart; i < minEnd; i++)
+ sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_LINEAR:
+ for (i = minStart; i < minEnd; i++)
+ sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_NEAREST_MIPMAP_NEAREST:
+ sample_3d_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_NEAREST:
+ sample_3d_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_NEAREST_MIPMAP_LINEAR:
+ sample_3d_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_LINEAR:
+ sample_3d_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad min filter in sample_3d_texture");
+ return;
}
- else {
- /* magnification */
- switch (tObj->MagFilter) {
- case GL_NEAREST:
- sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- case GL_LINEAR:
- sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
- texcoords[i], rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad mag filter in sample_3d_texture");
- }
+ }
+
+ if (magStart < magEnd) {
+ /* do the magnified texels */
+ switch (tObj->MagFilter) {
+ case GL_NEAREST:
+ for (i = magStart; i < magEnd; i++)
+ sample_3d_nearest(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ case GL_LINEAR:
+ for (i = magStart; i < magEnd; i++)
+ sample_3d_linear(ctx, tObj, tObj->Image[tObj->BaseLevel],
+ texcoords[i], rgba[i]);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad mag filter in sample_3d_texture");
+ return;
}
}
}
static void
sample_cube_nearest_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- GLint level;
-
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
-
- images = choose_cube_face(tObj, texcoord, newCoord);
- sample_2d_nearest(ctx, tObj, images[level], newCoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const struct gl_texture_image **images;
+ GLfloat newCoord[4];
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ images = choose_cube_face(tObj, texcoord[i], newCoord);
+ sample_2d_nearest(ctx, tObj, images[level], newCoord, rgba[i]);
+ }
}
static void
sample_cube_linear_mipmap_nearest(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- GLint level;
-
- COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda, level);
-
- images = choose_cube_face(tObj, texcoord, newCoord);
- sample_2d_linear(ctx, tObj, images[level], newCoord, rgba);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const struct gl_texture_image **images;
+ GLfloat newCoord[4];
+ GLint level;
+ COMPUTE_NEAREST_MIPMAP_LEVEL(tObj, lambda[i], level);
+ images = choose_cube_face(tObj, texcoord[i], newCoord);
+ sample_2d_linear(ctx, tObj, images[level], newCoord, rgba[i]);
+ }
}
static void
sample_cube_nearest_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- images = choose_cube_face(tObj, texcoord, newCoord);
-
- if (level >= tObj->_MaxLevel) {
- sample_2d_nearest(ctx, tObj, images[tObj->_MaxLevel], newCoord, rgba);
- }
- else {
- GLchan t0[4], t1[4]; /* texels */
- const GLfloat f = FRAC(lambda);
- sample_2d_nearest(ctx, tObj, images[level ], newCoord, t0);
- sample_2d_nearest(ctx, tObj, images[level+1], newCoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const struct gl_texture_image **images;
+ GLfloat newCoord[4];
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ images = choose_cube_face(tObj, texcoord[i], newCoord);
+ if (level >= tObj->_MaxLevel) {
+ sample_2d_nearest(ctx, tObj, images[tObj->_MaxLevel],
+ newCoord, rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4]; /* texels */
+ const GLfloat f = FRAC(lambda[i]);
+ sample_2d_nearest(ctx, tObj, images[level ], newCoord, t0);
+ sample_2d_nearest(ctx, tObj, images[level+1], newCoord, t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
static void
sample_cube_linear_mipmap_linear(GLcontext *ctx,
const struct gl_texture_object *tObj,
- const GLfloat texcoord[4],
- GLfloat lambda, GLchan rgba[4])
+ GLuint n, GLfloat texcoord[][4],
+ const GLfloat lambda[], GLchan rgba[][4])
{
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- GLint level;
-
- COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda, level);
-
- images = choose_cube_face(tObj, texcoord, newCoord);
-
- if (level >= tObj->_MaxLevel) {
- sample_2d_linear(ctx, tObj, images[tObj->_MaxLevel], newCoord, rgba);
- }
- else {
- GLchan t0[4], t1[4];
- const GLfloat f = FRAC(lambda);
- sample_2d_linear(ctx, tObj, images[level ], newCoord, t0);
- sample_2d_linear(ctx, tObj, images[level+1], newCoord, t1);
- rgba[RCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
- rgba[GCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
- rgba[BCOMP] = (GLchan) INTCAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
- rgba[ACOMP] = (GLchan) INTCAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ GLuint i;
+ for (i = 0; i < n; i++) {
+ const struct gl_texture_image **images;
+ GLfloat newCoord[4];
+ GLint level;
+ COMPUTE_LINEAR_MIPMAP_LEVEL(tObj, lambda[i], level);
+ images = choose_cube_face(tObj, texcoord[i], newCoord);
+ if (level >= tObj->_MaxLevel) {
+ sample_2d_linear(ctx, tObj, images[tObj->_MaxLevel],
+ newCoord, rgba[i]);
+ }
+ else {
+ GLchan t0[4], t1[4];
+ const GLfloat f = FRAC(lambda[i]);
+ sample_2d_linear(ctx, tObj, images[level ], newCoord, t0);
+ sample_2d_linear(ctx, tObj, images[level+1], newCoord, t1);
+ rgba[i][RCOMP] = CHAN_CAST ((1.0F-f) * t0[RCOMP] + f * t1[RCOMP]);
+ rgba[i][GCOMP] = CHAN_CAST ((1.0F-f) * t0[GCOMP] + f * t1[GCOMP]);
+ rgba[i][BCOMP] = CHAN_CAST ((1.0F-f) * t0[BCOMP] + f * t1[BCOMP]);
+ rgba[i][ACOMP] = CHAN_CAST ((1.0F-f) * t0[ACOMP] + f * t1[ACOMP]);
+ }
}
}
GLfloat texcoords[][4], const GLfloat lambda[],
GLchan rgba[][4])
{
- GLfloat MinMagThresh = SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit];
- GLuint i;
+ GLuint minStart, minEnd; /* texels with minification */
+ GLuint magStart, magEnd; /* texels with magnification */
- for (i = 0; i < n; i++) {
- if (lambda[i] > MinMagThresh) {
- /* minification */
- switch (tObj->MinFilter) {
- case GL_NEAREST:
- {
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- images = choose_cube_face(tObj, texcoords[i], newCoord);
- sample_2d_nearest(ctx, tObj, images[tObj->BaseLevel],
- newCoord, rgba[i]);
- }
- break;
- case GL_LINEAR:
- {
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- images = choose_cube_face(tObj, texcoords[i], newCoord);
- sample_2d_linear(ctx, tObj, images[tObj->BaseLevel],
- newCoord, rgba[i]);
- }
- break;
- case GL_NEAREST_MIPMAP_NEAREST:
- sample_cube_nearest_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_NEAREST:
- sample_cube_linear_mipmap_nearest(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_NEAREST_MIPMAP_LINEAR:
- sample_cube_nearest_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- case GL_LINEAR_MIPMAP_LINEAR:
- sample_cube_linear_mipmap_linear(ctx, tObj, texcoords[i],
- lambda[i], rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad min filter in sample_lambda_cube");
- }
+ compute_min_mag_ranges(SWRAST_CONTEXT(ctx)->_MinMagThresh[texUnit],
+ n, lambda, &minStart, &minEnd, &magStart, &magEnd);
+
+ if (minStart < minEnd) {
+ /* do the minified texels */
+ const GLuint m = minEnd - minStart;
+ switch (tObj->MinFilter) {
+ case GL_NEAREST:
+ sample_nearest_cube(ctx, texUnit, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR:
+ sample_linear_cube(ctx, texUnit, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_NEAREST_MIPMAP_NEAREST:
+ sample_cube_nearest_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_NEAREST:
+ sample_cube_linear_mipmap_nearest(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_NEAREST_MIPMAP_LINEAR:
+ sample_cube_nearest_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ case GL_LINEAR_MIPMAP_LINEAR:
+ sample_cube_linear_mipmap_linear(ctx, tObj, m, texcoords + minStart,
+ lambda + minStart, rgba + minStart);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad min filter in sample_lambda_cube");
}
- else {
- /* magnification */
- const struct gl_texture_image **images;
- GLfloat newCoord[4];
- images = choose_cube_face(tObj, texcoords[i], newCoord);
- switch (tObj->MagFilter) {
- case GL_NEAREST:
- sample_2d_nearest(ctx, tObj, images[tObj->BaseLevel],
- newCoord, rgba[i]);
- break;
- case GL_LINEAR:
- sample_2d_linear(ctx, tObj, images[tObj->BaseLevel],
- newCoord, rgba[i]);
- break;
- default:
- _mesa_problem(NULL, "Bad mag filter in sample_lambda_cube");
- }
+ }
+
+ if (magStart < magEnd) {
+ /* do the magnified texels */
+ const GLuint m = magEnd - magStart;
+ switch (tObj->MagFilter) {
+ case GL_NEAREST:
+ sample_nearest_cube(ctx, texUnit, tObj, m, texcoords + magStart,
+ lambda + magStart, rgba + magStart);
+ break;
+ case GL_LINEAR:
+ sample_linear_cube(ctx, texUnit, tObj, m, texcoords + magStart,
+ lambda + magStart, rgba + magStart);
+ break;
+ default:
+ _mesa_problem(ctx, "Bad mag filter in sample_lambda_cube");
}
}
}
}
break;
default:
- _mesa_problem(NULL, "invalid dimensions in _mesa_set_texture_sampler");
+ _mesa_problem(ctx, "invalid dimensions in _swrast_choose_texture_sample_func");
}
}
}
}
break;
default:
- _mesa_problem(NULL, "invalid combine source");
+ _mesa_problem(ctx, "invalid combine source");
}
switch (textureUnit->CombineSourceRGB[j]) {
}
break;
default:
- _mesa_problem(NULL, "invalid combine source");
+ _mesa_problem(ctx, "invalid combine source");
}
if (textureUnit->CombineOperandRGB[j] != GL_SRC_COLOR) {
}
break;
default:
- _mesa_problem(NULL, "invalid combine mode");
+ _mesa_problem(ctx, "invalid combine mode");
}
switch (textureUnit->CombineModeA) {
break;
default:
- _mesa_problem(NULL, "invalid combine mode");
+ _mesa_problem(ctx, "invalid combine mode");
}
/* Fix the alpha component for GL_DOT3_RGBA_EXT combining.
projects / profile / ivi / mesa.git / commitdiff