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typedef int GLint;
typedef unsigned char GLubyte;
typedef unsigned int uint32_t;
struct radeon_bo {
void *ptr;
uint32_t flags;
};
struct radeon_renderbuffer {
struct radeon_bo *bo;
unsigned int cpp;
int has_surface;
};
static inline
GLint r600_1d_tile_helper(const struct radeon_renderbuffer * rrb,
GLint x, GLint y, GLint is_depth, GLint is_stencil)
{
GLint element_bytes = rrb->cpp;
GLint num_samples = 1;
GLint tile_width = 8;
GLint tile_height = 8;
GLint tile_thickness = 1;
GLint tile_bytes;
GLint tiles_per_row;
GLint slice_offset;
GLint tile_row_index;
GLint tile_column_index;
GLint tile_offset;
GLint pixel_number = 0;
GLint element_offset;
GLint offset = 0;
tile_bytes = tile_width * tile_height * tile_thickness
* element_bytes * num_samples;
tile_column_index = x / tile_width;
tile_offset = ((tile_row_index * tiles_per_row)
+ tile_column_index) * tile_bytes;
if (is_depth) {
}
else {
GLint sample_offset;
switch (element_bytes) {
case 1: pixel_number |= ((x >> 0) & 1) << 0;
}
element_offset = sample_offset + (pixel_number * element_bytes);
}
offset = slice_offset + tile_offset + element_offset;
return offset;
}
GLubyte *r600_ptr_color(const struct radeon_renderbuffer * rrb,
GLint x, GLint y)
{
GLubyte *ptr = rrb->bo->ptr;
uint32_t mask = 1 | 2;
GLint offset;
if (rrb->has_surface || !(rrb->bo->flags & mask)) {
offset = r600_1d_tile_helper(rrb, x, y, 0, 0);
}
return &ptr[offset];
}
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