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author | Zack Rusin <zackr@vmware.com> | 2010-02-22 22:02:58 -0500 |
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committer | Zack Rusin <zackr@vmware.com> | 2010-02-22 22:02:58 -0500 |
commit | c5c5cd7132e18f4aad8e73d8ee879f8823c4c1e7 (patch) | |
tree | f36680fba5d44945075e4b6f7d4269154b3c1e7d /src/gallium/auxiliary/draw/draw_llvm.h | |
parent | 902ccfcb40f21e1a5fca2f1bec1cbbabb053d8cf (diff) | |
download | external_mesa3d-c5c5cd7132e18f4aad8e73d8ee879f8823c4c1e7.zip external_mesa3d-c5c5cd7132e18f4aad8e73d8ee879f8823c4c1e7.tar.gz external_mesa3d-c5c5cd7132e18f4aad8e73d8ee879f8823c4c1e7.tar.bz2 |
gallium/draw: initial code to properly support llvm in the draw module
code generate big chunks of the vertex pipeline in order to speed up
software vertex processing.
Diffstat (limited to 'src/gallium/auxiliary/draw/draw_llvm.h')
-rw-r--r-- | src/gallium/auxiliary/draw/draw_llvm.h | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/draw/draw_llvm.h b/src/gallium/auxiliary/draw/draw_llvm.h new file mode 100644 index 0000000..0a1845f --- /dev/null +++ b/src/gallium/auxiliary/draw/draw_llvm.h @@ -0,0 +1,154 @@ +#ifndef DRAW_LLVM_H +#define DRAW_LLVM_H + +#include "draw/draw_private.h" + +#include "pipe/p_context.h" + +#include <llvm-c/Core.h> +#include <llvm-c/Analysis.h> +#include <llvm-c/Target.h> +#include <llvm-c/ExecutionEngine.h> + +struct draw_jit_texture +{ + uint32_t width; + uint32_t height; + uint32_t stride; + const void *data; +}; + +enum { + DRAW_JIT_TEXTURE_WIDTH = 0, + DRAW_JIT_TEXTURE_HEIGHT, + DRAW_JIT_TEXTURE_STRIDE, + DRAW_JIT_TEXTURE_DATA +}; + +enum { + DRAW_JIT_VERTEX_VERTEX_ID = 0, + DRAW_JIT_VERTEX_CLIP, + DRAW_JIT_VERTEX_DATA +}; + +/** + * This structure is passed directly to the generated vertex shader. + * + * It contains the derived state. + * + * Changes here must be reflected in the draw_jit_context_* macros. + * Changes to the ordering should be avoided. + * + * Only use types with a clear size and padding here, in particular prefer the + * stdint.h types to the basic integer types. + */ +struct draw_jit_context +{ + const float *vs_constants; + const float *gs_constants; + + + struct draw_jit_texture textures[PIPE_MAX_SAMPLERS]; +}; + + +#define draw_jit_context_vs_constants(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 0, "vs_constants") + +#define draw_jit_context_gs_constants(_builder, _ptr) \ + lp_build_struct_get(_builder, _ptr, 1, "gs_constants") + +#define DRAW_JIT_CONTEXT_TEXTURES_INDEX 2 + +#define draw_jit_context_textures(_builder, _ptr) \ + lp_build_struct_get_ptr(_builder, _ptr, DRAW_JIT_CONTEXT_TEXTURES_INDEX, "textures") + +/* we are construction a function of the form: + +struct vertex_header { + uint32 vertex_id; + + float clip[4]; + float data[][4]; +}; + +struct draw_jit_context +{ + const float *vs_constants; + const float *gs_constants; + + struct draw_jit_texture textures[PIPE_MAX_SAMPLERS]; + const void *vbuffers; +}; + +void +draw_shader(struct draw_jit_context *context, + struct vertex_header *io, + unsigned start, + unsigned count, + unsigned stride) +{ + // do a fetch and a run vertex shader + for (int i = 0; i < count; ++i) { + struct vertex_header *header = &io[i]; + header->vertex_id = 0xffff; + // follows code-genarted fetch/translate section + // for each vertex_element ... + codegened_translate(header->data[num_element], + context->vertex_elements[num_element], + context->vertex_buffers, + context->vbuffers); + + codegened_vertex_shader(header->data, context->vs_constants); + } + + for (int i = 0; i < count; i += context->primitive_size) { + struct vertex_header *prim[MAX_PRIMITIVE_SIZE]; + for (int j = 0; j < context->primitive_size; ++j) { + header[j] = &io[i + j]; + } + codegened_geometry_shader(prim, gs_constants); + } +} +*/ + +typedef void +(*draw_jit_vert_func)(struct draw_jit_context *context, + struct vertex_header *io, + unsigned start, + unsigned count, + unsigned stride); + +struct draw_llvm { + struct draw_context *draw; + + struct draw_jit_context jit_context; + + draw_jit_vert_func jit_func; + + LLVMModuleRef module; + LLVMExecutionEngineRef engine; + LLVMModuleProviderRef provider; + LLVMTargetDataRef target; + LLVMPassManagerRef pass; + + LLVMTypeRef context_ptr_type; + LLVMTypeRef vertex_header_ptr_type; +}; + + +struct draw_llvm * +draw_llvm_create(struct draw_context *draw); + +void +draw_llvm_destroy(struct draw_llvm *llvm); + +void +draw_llvm_prepare(struct draw_llvm *llvm); + +/* generates the draw jit function */ +void +draw_llvm_generate(struct draw_llvm *llvm); + + +#endif |