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Diffstat (limited to 'mesalib/src/mesa/main/readpix.c')
-rw-r--r--mesalib/src/mesa/main/readpix.c23
1 files changed, 14 insertions, 9 deletions
diff --git a/mesalib/src/mesa/main/readpix.c b/mesalib/src/mesa/main/readpix.c
index a7b7ed7f2..38b9c64ed 100644
--- a/mesalib/src/mesa/main/readpix.c
+++ b/mesalib/src/mesa/main/readpix.c
@@ -252,10 +252,7 @@ slow_read_rgba_pixels( struct gl_context *ctx,
{
struct gl_renderbuffer *rb = ctx->ReadBuffer->_ColorReadBuffer;
const gl_format rbFormat = _mesa_get_srgb_format_linear(rb->Format);
- union {
- float f[MAX_WIDTH][4];
- unsigned int i[MAX_WIDTH][4];
- } rgba;
+ void *rgba;
GLubyte *dst, *map;
int dstStride, stride, j;
@@ -270,19 +267,27 @@ slow_read_rgba_pixels( struct gl_context *ctx,
return;
}
+ rgba = malloc(width * MAX_PIXEL_BYTES);
+ if (!rgba)
+ goto done;
+
for (j = 0; j < height; j++) {
if (_mesa_is_integer_format(format)) {
- _mesa_unpack_int_rgba_row(rbFormat, width, map, rgba.i);
- _mesa_pack_rgba_span_int(ctx, width, rgba.i, format, type, dst);
+ _mesa_unpack_int_rgba_row(rbFormat, width, map, (GLuint (*)[4]) rgba);
+ _mesa_pack_rgba_span_int(ctx, width, (GLuint (*)[4]) rgba, format,
+ type, dst);
} else {
- _mesa_unpack_rgba_row(rbFormat, width, map, rgba.f);
- _mesa_pack_rgba_span_float(ctx, width, rgba.f, format, type, dst,
- packing, transferOps);
+ _mesa_unpack_rgba_row(rbFormat, width, map, (GLfloat (*)[4]) rgba);
+ _mesa_pack_rgba_span_float(ctx, width, (GLfloat (*)[4]) rgba, format,
+ type, dst, packing, transferOps);
}
dst += dstStride;
map += stride;
}
+ free(rgba);
+
+done:
ctx->Driver.UnmapRenderbuffer(ctx, rb);
}