X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=helpers%2Fglsize.hpp;h=6ffba688df60ec227354e559088719a0278a9b82;hb=a3b4d63c07781b5536d008a6b78716a4aeea1813;hp=a5891997b9600d718380e0056c58a9269aad27db;hpb=0b65a2bc99ea926111c0ff19723bd5e2ac84827d;p=apitrace

diff --git a/helpers/glsize.hpp b/helpers/glsize.hpp
index a589199..6ffba68 100644
--- a/helpers/glsize.hpp
+++ b/helpers/glsize.hpp
@@ -608,28 +608,32 @@ static inline size_t
 _gl_image_size(GLenum format, GLenum type, GLsizei width, GLsizei height, GLsizei depth, GLboolean has_unpack_subimage) {
     unsigned num_channels = _gl_format_channels(format);
 
+    unsigned bits_per_element;
     unsigned bits_per_pixel;
     switch (type) {
     case GL_BITMAP:
-        bits_per_pixel = 1;
+        bits_per_pixel = bits_per_element = 1;
         break;
     case GL_BYTE:
     case GL_UNSIGNED_BYTE:
-        bits_per_pixel = 8 * num_channels;
+        bits_per_element = 8;
+        bits_per_pixel = bits_per_element * num_channels;
         break;
     case GL_SHORT:
     case GL_UNSIGNED_SHORT:
     case GL_HALF_FLOAT:
-        bits_per_pixel = 16 * num_channels;
+        bits_per_element = 16;
+        bits_per_pixel = bits_per_element * num_channels;
         break;
     case GL_INT:
     case GL_UNSIGNED_INT:
     case GL_FLOAT:
-        bits_per_pixel = 32 * num_channels;
+        bits_per_element = 32;
+        bits_per_pixel = bits_per_element * num_channels;
         break;
     case GL_UNSIGNED_BYTE_3_3_2:
     case GL_UNSIGNED_BYTE_2_3_3_REV:
-        bits_per_pixel = 8;
+        bits_per_pixel = bits_per_element = 8;
         break;
     case GL_UNSIGNED_SHORT_4_4_4_4:
     case GL_UNSIGNED_SHORT_4_4_4_4_REV:
@@ -639,7 +643,7 @@ _gl_image_size(GLenum format, GLenum type, GLsizei width, GLsizei height, GLsize
     case GL_UNSIGNED_SHORT_5_6_5_REV:
     case GL_UNSIGNED_SHORT_8_8_MESA:
     case GL_UNSIGNED_SHORT_8_8_REV_MESA:
-        bits_per_pixel = 16;
+        bits_per_pixel = bits_per_element = 16;
         break;
     case GL_UNSIGNED_INT_8_8_8_8:
     case GL_UNSIGNED_INT_8_8_8_8_REV:
@@ -650,14 +654,14 @@ _gl_image_size(GLenum format, GLenum type, GLsizei width, GLsizei height, GLsize
     case GL_UNSIGNED_INT_5_9_9_9_REV:
     case GL_UNSIGNED_INT_S8_S8_8_8_NV:
     case GL_UNSIGNED_INT_8_8_S8_S8_REV_NV:
-        bits_per_pixel = 32;
+        bits_per_pixel = bits_per_element = 32;
         break;
     case GL_FLOAT_32_UNSIGNED_INT_24_8_REV:
-        bits_per_pixel = 64;
+        bits_per_pixel = bits_per_element = 64;
         break;
     default:
         os::log("apitrace: warning: %s: unexpected type GLenum 0x%04X\n", __FUNCTION__, type);
-        bits_per_pixel = 0;
+        bits_per_pixel = bits_per_element = 0;
         break;
     }
 
@@ -683,9 +687,11 @@ _gl_image_size(GLenum format, GLenum type, GLsizei width, GLsizei height, GLsize
 
     size_t row_stride = (row_length*bits_per_pixel + 7)/8;
 
-    if ((GLint)bits_per_pixel < alignment*8 &&
-        (bits_per_pixel & 7) == 0 &&
-        _is_pot(bits_per_pixel)) {
+    if ((bits_per_element == 1*8 ||
+         bits_per_element == 2*8 ||
+         bits_per_element == 4*8 ||
+         bits_per_element == 8*8) &&
+        (GLint)bits_per_element < alignment*8) {
         row_stride = _align(row_stride, alignment);
     }