diff options
| -rw-r--r-- | src/mesa/swrast/s_texture.c | 884 |
1 files changed, 459 insertions, 425 deletions
diff --git a/src/mesa/swrast/s_texture.c b/src/mesa/swrast/s_texture.c index 1e881a3e0c8..456502bdd47 100644 --- a/src/mesa/swrast/s_texture.c +++ b/src/mesa/swrast/s_texture.c @@ -1,4 +1,4 @@ -/* $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 @@ -299,6 +299,93 @@ palette_sample(const GLcontext *ctx, } +/* + * 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 */ @@ -417,24 +504,30 @@ sample_1d_linear(GLcontext *ctx, 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]); + } } @@ -443,34 +536,36 @@ sample_1d_linear_mipmap_nearest(GLcontext *ctx, * 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]); + } } } @@ -479,25 +574,27 @@ sample_1d_nearest_mipmap_linear(GLcontext *ctx, 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]); + } } } @@ -545,64 +642,70 @@ sample_lambda_1d( GLcontext *ctx, GLuint texUnit, 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 */ /**********************************************************************/ @@ -782,6 +885,7 @@ sample_2d_linear_repeat(GLcontext *ctx, 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); @@ -895,10 +999,10 @@ sample_2d_nearest_mipmap_linear(GLcontext *ctx, 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]); } } } @@ -925,10 +1029,10 @@ sample_2d_linear_mipmap_linear( GLcontext *ctx, 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]); } } } @@ -955,10 +1059,10 @@ sample_2d_linear_mipmap_linear_repeat( GLcontext *ctx, 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]); } } } @@ -1068,31 +1172,9 @@ opt_sample_rgba_2d( GLcontext *ctx, GLuint texUnit, } } -#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 @@ -1102,81 +1184,20 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit, 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) { @@ -1224,14 +1245,14 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit, 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: @@ -1260,7 +1281,7 @@ sample_lambda_2d( GLcontext *ctx, GLuint texUnit, 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"); } } } @@ -1503,50 +1524,57 @@ sample_3d_linear(GLcontext *ctx, 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]); + } } } @@ -1554,25 +1582,27 @@ sample_3d_nearest_mipmap_linear(GLcontext *ctx, 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]); + } } } @@ -1618,56 +1648,65 @@ sample_lambda_3d( GLcontext *ctx, GLuint texUnit, 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; } } } @@ -1792,63 +1831,66 @@ sample_linear_cube(GLcontext *ctx, GLuint texUnit, 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]); + } } } @@ -1856,29 +1898,30 @@ sample_cube_nearest_mipmap_linear(GLcontext *ctx, 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]); + } } } @@ -1889,68 +1932,59 @@ sample_lambda_cube( GLcontext *ctx, GLuint texUnit, 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"); } } } @@ -2399,7 +2433,7 @@ _swrast_choose_texture_sample_func( GLcontext *ctx, GLuint texUnit, } break; default: - _mesa_problem(NULL, "invalid dimensions in _mesa_set_texture_sampler"); + _mesa_problem(ctx, "invalid dimensions in _swrast_choose_texture_sample_func"); } } } @@ -2458,7 +2492,7 @@ texture_combine(const GLcontext *ctx, } break; default: - _mesa_problem(NULL, "invalid combine source"); + _mesa_problem(ctx, "invalid combine source"); } switch (textureUnit->CombineSourceRGB[j]) { @@ -2489,7 +2523,7 @@ texture_combine(const GLcontext *ctx, } break; default: - _mesa_problem(NULL, "invalid combine source"); + _mesa_problem(ctx, "invalid combine source"); } if (textureUnit->CombineOperandRGB[j] != GL_SRC_COLOR) { @@ -2724,7 +2758,7 @@ texture_combine(const GLcontext *ctx, } break; default: - _mesa_problem(NULL, "invalid combine mode"); + _mesa_problem(ctx, "invalid combine mode"); } switch (textureUnit->CombineModeA) { @@ -2832,7 +2866,7 @@ texture_combine(const GLcontext *ctx, break; default: - _mesa_problem(NULL, "invalid combine mode"); + _mesa_problem(ctx, "invalid combine mode"); } /* Fix the alpha component for GL_DOT3_RGBA_EXT combining. |