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_RG88:
  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       return GL_UNSIGNED_BYTE;
  26    case MESA_FORMAT_R16:
  27    case MESA_FORMAT_RG1616:
  28    case MESA_FORMAT_Z16:
  29       return GL_UNSIGNED_SHORT;
  30    case MESA_FORMAT_X8_Z24:
  31       return GL_UNSIGNED_INT;
  32    case MESA_FORMAT_S8_Z24:
  33       return GL_UNSIGNED_INT_24_8_EXT;
  34    case MESA_FORMAT_RGBA_FLOAT32:
  35    case MESA_FORMAT_RG_FLOAT32:
  36    case MESA_FORMAT_R_FLOAT32:
  37    case MESA_FORMAT_INTENSITY_FLOAT32:
  38    case MESA_FORMAT_LUMINANCE_FLOAT32:
  39    case MESA_FORMAT_ALPHA_FLOAT32:
  40    case MESA_FORMAT_LUMINANCE_ALPHA_FLOAT32:
  41       return GL_FLOAT;
  42
  43    default:
  44       _mesa_problem(NULL, "unexpected MESA_FORMAT for renderbuffer");
  45       return GL_UNSIGNED_BYTE;
  46    }
  47 }
  48
  49 int intel_compressed_num_bytes(GLuint mesaFormat)
  50 {
  51    GLuint bw, bh;
  52    GLuint block_size;
  53
  54    block_size = _mesa_get_format_bytes(mesaFormat);
  55    _mesa_get_format_block_size(mesaFormat, &bw, &bh);
  56
  57    return block_size / bw;
  58 }