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      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 }
     66