src/gallium/drivers/swr/swr_scratch.h

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  23
  24 #ifndef SWR_SCRATCH_H
  25 #define SWR_SCRATCH_H
  26
  27 struct swr_scratch_space {
  28    void *head;
  29    unsigned int current_size;
  30    /* TODO XXX: Add a fence for wrap condition. */
  31
  32    void *base;
  33 };
  34
  35 struct swr_scratch_buffers {
  36    struct swr_scratch_space vs_constants;
  37    struct swr_scratch_space fs_constants;
  38    struct swr_scratch_space gs_constants;
  39    struct swr_scratch_space vertex_buffer;
  40    struct swr_scratch_space index_buffer;
  41 };
  42
  43
  44 /*
  45  * swr_copy_to_scratch_space
  46  * Copies size bytes of user_buffer into the scratch ring buffer.
  47  * Used to store temporary data such as client arrays and constants.
  48  *
  49  * Inputs:
  50  *   space ptr to scratch pool (vs_constants, fs_constants)
  51  *   user_buffer, data to copy into scratch space
  52  *   size to be copied
  53  * Returns:
  54  *   pointer to data copied to scratch space.
  55  */
  56 void *swr_copy_to_scratch_space(struct swr_context *ctx,
  57                                 struct swr_scratch_space *space,
  58                                 const void *user_buffer,
  59                                 unsigned int size);
  60
  61 void swr_init_scratch_buffers(struct swr_context *ctx);
  62 void swr_destroy_scratch_buffers(struct swr_context *ctx);
  63
  64 #endif