gcc/testsuite/gcc.c-torture/compile/pr42705.c

   1 typedef int GLint;
   2 typedef unsigned char GLubyte;
   3 typedef unsigned int uint32_t;
   4 struct radeon_bo {
   5     void *ptr;
   6     uint32_t flags;
   7 };
   8 struct radeon_renderbuffer {
   9     struct radeon_bo *bo;
  10     unsigned int cpp;
  11     int has_surface;
  12 };
  13 static inline
  14 GLint r600_1d_tile_helper(const struct radeon_renderbuffer * rrb,
  15                           GLint x, GLint y, GLint is_depth, GLint is_stencil)
  16 {
  17   GLint element_bytes = rrb->cpp;
  18   GLint num_samples = 1;
  19   GLint tile_width = 8;
  20   GLint tile_height = 8;
  21   GLint tile_thickness = 1;
  22   GLint tile_bytes;
  23   GLint tiles_per_row;
  24   GLint slice_offset;
  25   GLint tile_row_index;
  26   GLint tile_column_index;
  27   GLint tile_offset;
  28   GLint pixel_number = 0;
  29   GLint element_offset;
  30   GLint offset = 0;
  31   tile_bytes = tile_width * tile_height * tile_thickness
  32       * element_bytes * num_samples;
  33   tile_column_index = x / tile_width;
  34   tile_offset = ((tile_row_index * tiles_per_row)
  35                  + tile_column_index) * tile_bytes;
  36   if (is_depth) {
  37   }
  38   else {
  39       GLint sample_offset;
  40       switch (element_bytes) {
  41           case 1:       pixel_number |= ((x >> 0) & 1) << 0;
  42       }
  43       element_offset = sample_offset + (pixel_number * element_bytes);
  44   }
  45   offset = slice_offset + tile_offset + element_offset;
  46   return offset;
  47 }
  48 GLubyte *r600_ptr_color(const struct radeon_renderbuffer * rrb,
  49                         GLint x, GLint y)
  50 {
  51   GLubyte *ptr = rrb->bo->ptr;
  52   uint32_t mask = 1 | 2;
  53   GLint offset;
  54   if (rrb->has_surface || !(rrb->bo->flags & mask)) {
  55       offset = r600_1d_tile_helper(rrb, x, y, 0, 0);
  56   }
  57   return &ptr[offset];
  58 }