#define LP_BLD_SAMPLE_H
+#include "pipe/p_format.h"
+#include "util/u_debug.h"
#include "gallivm/lp_bld.h"
+#include "gallivm/lp_bld_type.h"
+#include "gallivm/lp_bld_swizzle.h"
+
struct pipe_resource;
struct pipe_sampler_view;
unsigned compare_mode:1;
unsigned compare_func:3;
unsigned normalized_coords:1;
- float lod_bias, min_lod, max_lod;
- float border_color[4];
+ unsigned min_max_lod_equal:1; /**< min_lod == max_lod ? */
};
LLVMBuilderRef builder,
unsigned unit);
+ /** Obtain texture min lod */
+ LLVMValueRef
+ (*min_lod)(const struct lp_sampler_dynamic_state *state,
+ LLVMBuilderRef builder, unsigned unit);
+
+ /** Obtain texture max lod */
+ LLVMValueRef
+ (*max_lod)(const struct lp_sampler_dynamic_state *state,
+ LLVMBuilderRef builder, unsigned unit);
+
+ /** Obtain texture lod bias */
+ LLVMValueRef
+ (*lod_bias)(const struct lp_sampler_dynamic_state *state,
+ LLVMBuilderRef builder, unsigned unit);
+
+ /** Obtain texture border color */
+ LLVMValueRef
+ (*border_color)(const struct lp_sampler_dynamic_state *state,
+ LLVMBuilderRef builder, unsigned unit);
};
+/**
+ * Keep all information for sampling code generation in a single place.
+ */
+struct lp_build_sample_context
+{
+ LLVMBuilderRef builder;
+
+ const struct lp_sampler_static_state *static_state;
+
+ struct lp_sampler_dynamic_state *dynamic_state;
+
+ const struct util_format_description *format_desc;
+
+ /** regular scalar float type */
+ struct lp_type float_type;
+ struct lp_build_context float_bld;
+
+ /** float vector type */
+ struct lp_build_context float_vec_bld;
+
+ /** regular scalar float type */
+ struct lp_type int_type;
+ struct lp_build_context int_bld;
+
+ /** Incoming coordinates type and build context */
+ struct lp_type coord_type;
+ struct lp_build_context coord_bld;
+
+ /** Unsigned integer coordinates */
+ struct lp_type uint_coord_type;
+ struct lp_build_context uint_coord_bld;
+
+ /** Signed integer coordinates */
+ struct lp_type int_coord_type;
+ struct lp_build_context int_coord_bld;
+
+ /** Output texels type and build context */
+ struct lp_type texel_type;
+ struct lp_build_context texel_bld;
+};
+
+
+
+/**
+ * We only support a few wrap modes in lp_build_sample_wrap_linear_int() at
+ * this time. Return whether the given mode is supported by that function.
+ */
+static INLINE boolean
+lp_is_simple_wrap_mode(unsigned mode)
+{
+ switch (mode) {
+ case PIPE_TEX_WRAP_REPEAT:
+ case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+
+
+static INLINE void
+apply_sampler_swizzle(struct lp_build_sample_context *bld,
+ LLVMValueRef *texel)
+{
+ unsigned char swizzles[4];
+
+ swizzles[0] = bld->static_state->swizzle_r;
+ swizzles[1] = bld->static_state->swizzle_g;
+ swizzles[2] = bld->static_state->swizzle_b;
+ swizzles[3] = bld->static_state->swizzle_a;
+
+ lp_build_swizzle_soa_inplace(&bld->texel_bld, texel, swizzles);
+}
+
+
+static INLINE int
+texture_dims(enum pipe_texture_target tex)
+{
+ switch (tex) {
+ case PIPE_TEXTURE_1D:
+ return 1;
+ case PIPE_TEXTURE_2D:
+ case PIPE_TEXTURE_RECT:
+ case PIPE_TEXTURE_CUBE:
+ return 2;
+ case PIPE_TEXTURE_3D:
+ return 3;
+ default:
+ assert(0 && "bad texture target in texture_dims()");
+ return 2;
+ }
+}
+
+
/**
* Derive the sampler static state.
*/
const struct pipe_sampler_state *sampler);
+LLVMValueRef
+lp_build_lod_selector(struct lp_build_sample_context *bld,
+ unsigned unit,
+ const LLVMValueRef ddx[4],
+ const LLVMValueRef ddy[4],
+ LLVMValueRef lod_bias, /* optional */
+ LLVMValueRef explicit_lod, /* optional */
+ LLVMValueRef width,
+ LLVMValueRef height,
+ LLVMValueRef depth);
+
+void
+lp_build_nearest_mip_level(struct lp_build_sample_context *bld,
+ unsigned unit,
+ LLVMValueRef lod,
+ LLVMValueRef *level_out);
+
+void
+lp_build_linear_mip_levels(struct lp_build_sample_context *bld,
+ unsigned unit,
+ LLVMValueRef lod,
+ LLVMValueRef *level0_out,
+ LLVMValueRef *level1_out,
+ LLVMValueRef *weight_out);
+
+LLVMValueRef
+lp_build_get_mipmap_level(struct lp_build_sample_context *bld,
+ LLVMValueRef data_array, LLVMValueRef level);
+
+LLVMValueRef
+lp_build_get_const_mipmap_level(struct lp_build_sample_context *bld,
+ LLVMValueRef data_array, int level);
+
+
+void
+lp_build_mipmap_level_sizes(struct lp_build_sample_context *bld,
+ unsigned dims,
+ LLVMValueRef width_vec,
+ LLVMValueRef height_vec,
+ LLVMValueRef depth_vec,
+ LLVMValueRef ilevel0,
+ LLVMValueRef ilevel1,
+ LLVMValueRef row_stride_array,
+ LLVMValueRef img_stride_array,
+ LLVMValueRef *width0_vec,
+ LLVMValueRef *width1_vec,
+ LLVMValueRef *height0_vec,
+ LLVMValueRef *height1_vec,
+ LLVMValueRef *depth0_vec,
+ LLVMValueRef *depth1_vec,
+ LLVMValueRef *row_stride0_vec,
+ LLVMValueRef *row_stride1_vec,
+ LLVMValueRef *img_stride0_vec,
+ LLVMValueRef *img_stride1_vec);
+
+
+void
+lp_build_cube_lookup(struct lp_build_sample_context *bld,
+ LLVMValueRef s,
+ LLVMValueRef t,
+ LLVMValueRef r,
+ LLVMValueRef *face,
+ LLVMValueRef *face_s,
+ LLVMValueRef *face_t);
+
+
+void
+lp_build_sample_partial_offset(struct lp_build_context *bld,
+ unsigned block_length,
+ LLVMValueRef coord,
+ LLVMValueRef stride,
+ LLVMValueRef *out_offset,
+ LLVMValueRef *out_i);
+
+
void
lp_build_sample_offset(struct lp_build_context *bld,
const struct util_format_description *format_desc,
LLVMValueRef explicit_lod,
LLVMValueRef texel_out[4]);
+void
+lp_build_sample_nop(struct lp_type type,
+ LLVMValueRef texel_out[4]);
#endif /* LP_BLD_SAMPLE_H */
projects / mesa.git / blobdiff