llvmpipe: Implement TXQ.

Piglits test for fragment shaders pass, vertex shaders fail.  The
actual failure seems to be in the interpolators, and not the
textureSize query.

Signed-off-by: Olivier Galibert <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: José Fonseca <[email protected]>

1 files changed, 23 insertions, 0 deletions

diff --git a/src/gallium/auxiliary/draw/draw_llvm_sample.c b/src/gallium/auxiliary/draw/draw_llvm_sample.c
index 8af34617353..0a8b3bc535f 100644
--- a/src/gallium/auxiliary/draw/draw_llvm_sample.c
+++ b/src/gallium/auxiliary/draw/draw_llvm_sample.c
@@ -195,6 +195,28 @@ draw_llvm_sampler_soa_emit_fetch_texel(const struct lp_build_sampler_soa *base,
 }
 
 
+/**
+ * Fetch the texture size.
+ */
+static void
+draw_llvm_sampler_soa_emit_size_query(const struct lp_build_sampler_soa *base,
+                                      struct gallivm_state *gallivm,
+                                      unsigned unit,
+                                      LLVMValueRef explicit_lod, /* optional */
+                                      LLVMValueRef *sizes_out)
+{
+   struct draw_llvm_sampler_soa *sampler = (struct draw_llvm_sampler_soa *)base;
+
+   assert(unit < PIPE_MAX_VERTEX_SAMPLERS);
+
+   lp_build_size_query_soa(gallivm,
+                           &sampler->dynamic_state.static_state[unit],
+                           &sampler->dynamic_state.base,
+                           unit,
+                           explicit_lod,
+                           sizes_out);
+}
+
 struct lp_build_sampler_soa *
 draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
                              LLVMValueRef context_ptr)
@@ -207,6 +229,7 @@ draw_llvm_sampler_soa_create(const struct lp_sampler_static_state *static_state,
 
    sampler->base.destroy = draw_llvm_sampler_soa_destroy;
    sampler->base.emit_fetch_texel = draw_llvm_sampler_soa_emit_fetch_texel;
+   sampler->base.emit_size_query = draw_llvm_sampler_soa_emit_size_query;
    sampler->dynamic_state.base.width = draw_llvm_texture_width;
    sampler->dynamic_state.base.height = draw_llvm_texture_height;
    sampler->dynamic_state.base.depth = draw_llvm_texture_depth;