diff options
Diffstat (limited to 'src/mesa/swrast')
| -rw-r--r-- | src/mesa/swrast/s_texfilter.c | 29 |
1 files changed, 20 insertions, 9 deletions
diff --git a/src/mesa/swrast/s_texfilter.c b/src/mesa/swrast/s_texfilter.c index ff7deecc39..478fb1557f 100644 --- a/src/mesa/swrast/s_texfilter.c +++ b/src/mesa/swrast/s_texfilter.c @@ -475,6 +475,18 @@ clamp_rect_coord_linear(GLenum wrapMode, GLfloat coord, GLint max, /** + * Compute slice/image to use for 1D or 2D array texture. + */ +static INLINE GLint +tex_array_slice(GLfloat coord, GLsizei size) +{ + GLint slice = IFLOOR(coord); + slice = CLAMP(slice, 0, size - 1); + return slice; +} + + +/** * Compute nearest integer texcoords for given texobj and coordinate. */ static INLINE void @@ -506,13 +518,13 @@ nearest_texcoord(const struct gl_texture_object *texObj, break; case GL_TEXTURE_1D_ARRAY_EXT: *i = nearest_texel_location(texObj->WrapS, img, width, texcoord[0]); - *j = clamp_rect_coord_nearest(texObj->WrapT, texcoord[1], height); + *j = tex_array_slice(texcoord[1], height); *k = 0; break; case GL_TEXTURE_2D_ARRAY_EXT: *i = nearest_texel_location(texObj->WrapS, img, width, texcoord[0]); *j = nearest_texel_location(texObj->WrapT, img, height, texcoord[1]); - *k = clamp_rect_coord_nearest(texObj->WrapR, texcoord[2], depth); + *k = tex_array_slice(texcoord[2], depth); break; default: *i = *j = *k = 0; @@ -556,7 +568,7 @@ linear_texcoord(const struct gl_texture_object *texObj, case GL_TEXTURE_1D_ARRAY_EXT: linear_texel_locations(texObj->WrapS, img, width, texcoord[0], i0, i1, wi); - *j0 = clamp_rect_coord_nearest(texObj->WrapT, texcoord[1], height); + *j0 = tex_array_slice(texcoord[1], height); *j1 = *j0; *slice = 0; break; @@ -566,7 +578,7 @@ linear_texcoord(const struct gl_texture_object *texObj, texcoord[0], i0, i1, wi); linear_texel_locations(texObj->WrapT, img, height, texcoord[1], j0, j1, wj); - *slice = clamp_rect_coord_nearest(texObj->WrapR, texcoord[2], depth); + *slice = tex_array_slice(texcoord[2], depth); break; default: @@ -2269,7 +2281,6 @@ sample_lambda_rect(GLcontext *ctx, } - /**********************************************************************/ /* 2D Texture Array Sampling Functions */ /**********************************************************************/ @@ -2293,7 +2304,7 @@ sample_2d_array_nearest(GLcontext *ctx, i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]); j = nearest_texel_location(tObj->WrapT, img, height, texcoord[1]); - array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth); + array = tex_array_slice(texcoord[2], depth); if (i < 0 || i >= (GLint) img->Width || j < 0 || j >= (GLint) img->Height || @@ -2328,7 +2339,7 @@ sample_2d_array_linear(GLcontext *ctx, linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a); linear_texel_locations(tObj->WrapT, img, height, texcoord[1], &j0, &j1, &b); - array = clamp_rect_coord_nearest(tObj->WrapR, texcoord[2], depth); + array = tex_array_slice(texcoord[2], depth); if (array < 0 || array >= depth) { COPY_4V(rgba, tObj->BorderColor.f); @@ -2601,7 +2612,7 @@ sample_1d_array_nearest(GLcontext *ctx, (void) ctx; i = nearest_texel_location(tObj->WrapS, img, width, texcoord[0]); - array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height); + array = tex_array_slice(texcoord[1], height); if (i < 0 || i >= (GLint) img->Width || array < 0 || array >= (GLint) img->Height) { @@ -2633,7 +2644,7 @@ sample_1d_array_linear(GLcontext *ctx, GLfloat t0[4], t1[4]; linear_texel_locations(tObj->WrapS, img, width, texcoord[0], &i0, &i1, &a); - array = clamp_rect_coord_nearest(tObj->WrapT, texcoord[1], height); + array = tex_array_slice(texcoord[1], height); if (img->Border) { i0 += img->Border; |