#include "tgsi/tgsi_exec.h"
-#include "lp_setup.h"
+/**
+ * Describes how to compute the interpolation coefficients (a0, dadx, dady)
+ * from the vertices passed into our triangle/line/point functions by the
+ * draw module.
+ *
+ * Vertices are treated as an array of float[4] values, indexed by
+ * src_index.
+ *
+ * LP_INTERP_COLOR is translated to either LP_INTERP_CONSTANT or
+ * LINEAR depending on flatshade state.
+ */
+enum lp_interp {
+ LP_INTERP_CONSTANT,
+ LP_INTERP_COLOR,
+ LP_INTERP_LINEAR,
+ LP_INTERP_PERSPECTIVE,
+ LP_INTERP_POSITION,
+ LP_INTERP_FACING
+};
+
+struct lp_shader_input {
+ ushort interp:4; /* enum lp_interp */
+ ushort usage_mask:4; /* bitmask of TGSI_WRITEMASK_x flags */
+ ushort src_index:8; /* where to find values in incoming vertices */
+};
struct lp_build_interp_soa_context
LLVMValueRef a [1 + PIPE_MAX_SHADER_INPUTS][NUM_CHANNELS];
LLVMValueRef dadq[1 + PIPE_MAX_SHADER_INPUTS][NUM_CHANNELS];
+ LLVMValueRef oow;
+
LLVMValueRef attribs[1 + PIPE_MAX_SHADER_INPUTS][NUM_CHANNELS];
/*
void
lp_build_interp_soa_init(struct lp_build_interp_soa_context *bld,
+ struct gallivm_state *gallivm,
unsigned num_inputs,
const struct lp_shader_input *inputs,
LLVMBuilderRef builder,
LLVMValueRef y);
void
-lp_build_interp_soa_update(struct lp_build_interp_soa_context *bld,
- int quad_index);
+lp_build_interp_soa_update_inputs(struct lp_build_interp_soa_context *bld,
+ struct gallivm_state *gallivm,
+ int quad_index);
+
+void
+lp_build_interp_soa_update_pos(struct lp_build_interp_soa_context *bld,
+ struct gallivm_state *gallivm,
+ int quad_index);
#endif /* LP_BLD_INTERP_H */