src/mesa/drivers/dri/intel/intel_tex_format.c

   1 #include "intel_context.h"
   2 #include "intel_tex.h"
   3 #include "main/enums.h"
   4 #include "main/formats.h"
   5
   6 /**
   7  * Returns the renderbuffer DataType for a MESA_FORMAT.
   8  */
   9 GLenum
  10 intel_mesa_format_to_rb_datatype(gl_format format)
  11 {
  12    switch (format) {
  13    case MESA_FORMAT_ARGB8888:
  14    case MESA_FORMAT_XRGB8888:
  15    case MESA_FORMAT_SARGB8:
  16    case MESA_FORMAT_R8:
  17    case MESA_FORMAT_GR88:
  18    case MESA_FORMAT_A8:
  19    case MESA_FORMAT_I8:
  20    case MESA_FORMAT_L8:
  21    case MESA_FORMAT_AL88:
  22    case MESA_FORMAT_RGB565:
  23    case MESA_FORMAT_ARGB1555:
  24    case MESA_FORMAT_ARGB4444:
  25    case MESA_FORMAT_S8:
  26       return GL_UNSIGNED_BYTE;
  27    case MESA_FORMAT_R16:
  28    case MESA_FORMAT_RG1616:
  29    case MESA_FORMAT_Z16:
  30       return GL_UNSIGNED_SHORT;
  31    case MESA_FORMAT_X8_Z24:
  32       return GL_UNSIGNED_INT;
  33    case MESA_FORMAT_S8_Z24:
  34       return GL_UNSIGNED_INT_24_8_EXT;
  35    case MESA_FORMAT_RGBA_FLOAT32:
  36    case MESA_FORMAT_RG_FLOAT32:
  37    case MESA_FORMAT_R_FLOAT32:
  38    case MESA_FORMAT_INTENSITY_FLOAT32:
  39    case MESA_FORMAT_LUMINANCE_FLOAT32:
  40    case MESA_FORMAT_ALPHA_FLOAT32:
  41    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
  42       return GL_FLOAT;
  43
  44       /* The core depthstencil wrappers demand this. */
  45    case MESA_FORMAT_Z32_FLOAT_X24S8:
  46       return GL_FLOAT_32_UNSIGNED_INT_24_8_REV;
  47
  48    default:
  49       /* Unsupported format.  We may hit this when people ask for FBO-incomplete
  50        * formats.
  51        */
  52       return GL_NONE;
  53    }
  54 }
  55
  56 int intel_compressed_num_bytes(GLuint mesaFormat)
  57 {
  58    GLuint bw, bh;
  59    GLuint block_size;
  60
  61    block_size = _mesa_get_format_bytes(mesaFormat);
  62    _mesa_get_format_block_size(mesaFormat, &bw, &bh);
  63
  64    return block_size / bw;
  65 }