diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_blit.c')
-rw-r--r-- | src/mesa/drivers/dri/intel/intel_blit.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_blit.c b/src/mesa/drivers/dri/intel/intel_blit.c index 979f202584..0c5be4c798 100644 --- a/src/mesa/drivers/dri/intel/intel_blit.c +++ b/src/mesa/drivers/dri/intel/intel_blit.c @@ -636,3 +636,43 @@ intelEmitImmediateColorExpandBlit(struct intel_context *intel, return GL_TRUE; } + +/* We don't have a memmove-type blit like some other hardware, so we'll do a + * rectangular blit covering a large space, then emit 1-scanline blit at the + * end to cover the last if we need. + */ +void +intel_emit_linear_blit(struct intel_context *intel, + drm_intel_bo *dst_bo, + unsigned int dst_offset, + drm_intel_bo *src_bo, + unsigned int src_offset, + unsigned int size) +{ + GLuint pitch, height; + + /* The pitch is a signed value. */ + pitch = MIN2(size, (1 << 15) - 1); + height = size / pitch; + intelEmitCopyBlit(intel, 1, + pitch, src_bo, src_offset, I915_TILING_NONE, + pitch, dst_bo, dst_offset, I915_TILING_NONE, + 0, 0, /* src x/y */ + 0, 0, /* dst x/y */ + pitch, height, /* w, h */ + GL_COPY); + + src_offset += pitch * height; + dst_offset += pitch * height; + size -= pitch * height; + assert (size < (1 << 15)); + if (size != 0) { + intelEmitCopyBlit(intel, 1, + size, src_bo, src_offset, I915_TILING_NONE, + size, dst_bo, dst_offset, I915_TILING_NONE, + 0, 0, /* src x/y */ + 0, 0, /* dst x/y */ + size, 1, /* w, h */ + GL_COPY); + } +} |