michael@0: #include "precompiled.h"
michael@0: //
michael@0: // Copyright (c) 2002-2012 The ANGLE Project Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: //
michael@0: 
michael@0: // renderer9_utils.cpp: Conversion functions and other utility routines
michael@0: // specific to the D3D9 renderer.
michael@0: 
michael@0: #include "libGLESv2/renderer/renderer9_utils.h"
michael@0: #include "libGLESv2/mathutil.h"
michael@0: #include "libGLESv2/Context.h"
michael@0: 
michael@0: #include "common/debug.h"
michael@0: 
michael@0: namespace gl_d3d9
michael@0: {
michael@0: 
michael@0: D3DCMPFUNC ConvertComparison(GLenum comparison)
michael@0: {
michael@0:     D3DCMPFUNC d3dComp = D3DCMP_ALWAYS;
michael@0:     switch (comparison)
michael@0:     {
michael@0:       case GL_NEVER:    d3dComp = D3DCMP_NEVER;        break;
michael@0:       case GL_ALWAYS:   d3dComp = D3DCMP_ALWAYS;       break;
michael@0:       case GL_LESS:     d3dComp = D3DCMP_LESS;         break;
michael@0:       case GL_LEQUAL:   d3dComp = D3DCMP_LESSEQUAL;    break;
michael@0:       case GL_EQUAL:    d3dComp = D3DCMP_EQUAL;        break;
michael@0:       case GL_GREATER:  d3dComp = D3DCMP_GREATER;      break;
michael@0:       case GL_GEQUAL:   d3dComp = D3DCMP_GREATEREQUAL; break;
michael@0:       case GL_NOTEQUAL: d3dComp = D3DCMP_NOTEQUAL;     break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dComp;
michael@0: }
michael@0: 
michael@0: D3DCOLOR ConvertColor(gl::Color color)
michael@0: {
michael@0:     return D3DCOLOR_RGBA(gl::unorm<8>(color.red),
michael@0:                          gl::unorm<8>(color.green),
michael@0:                          gl::unorm<8>(color.blue),
michael@0:                          gl::unorm<8>(color.alpha));
michael@0: }
michael@0: 
michael@0: D3DBLEND ConvertBlendFunc(GLenum blend)
michael@0: {
michael@0:     D3DBLEND d3dBlend = D3DBLEND_ZERO;
michael@0: 
michael@0:     switch (blend)
michael@0:     {
michael@0:       case GL_ZERO:                     d3dBlend = D3DBLEND_ZERO;           break;
michael@0:       case GL_ONE:                      d3dBlend = D3DBLEND_ONE;            break;
michael@0:       case GL_SRC_COLOR:                d3dBlend = D3DBLEND_SRCCOLOR;       break;
michael@0:       case GL_ONE_MINUS_SRC_COLOR:      d3dBlend = D3DBLEND_INVSRCCOLOR;    break;
michael@0:       case GL_DST_COLOR:                d3dBlend = D3DBLEND_DESTCOLOR;      break;
michael@0:       case GL_ONE_MINUS_DST_COLOR:      d3dBlend = D3DBLEND_INVDESTCOLOR;   break;
michael@0:       case GL_SRC_ALPHA:                d3dBlend = D3DBLEND_SRCALPHA;       break;
michael@0:       case GL_ONE_MINUS_SRC_ALPHA:      d3dBlend = D3DBLEND_INVSRCALPHA;    break;
michael@0:       case GL_DST_ALPHA:                d3dBlend = D3DBLEND_DESTALPHA;      break;
michael@0:       case GL_ONE_MINUS_DST_ALPHA:      d3dBlend = D3DBLEND_INVDESTALPHA;   break;
michael@0:       case GL_CONSTANT_COLOR:           d3dBlend = D3DBLEND_BLENDFACTOR;    break;
michael@0:       case GL_ONE_MINUS_CONSTANT_COLOR: d3dBlend = D3DBLEND_INVBLENDFACTOR; break;
michael@0:       case GL_CONSTANT_ALPHA:           d3dBlend = D3DBLEND_BLENDFACTOR;    break;
michael@0:       case GL_ONE_MINUS_CONSTANT_ALPHA: d3dBlend = D3DBLEND_INVBLENDFACTOR; break;
michael@0:       case GL_SRC_ALPHA_SATURATE:       d3dBlend = D3DBLEND_SRCALPHASAT;    break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dBlend;
michael@0: }
michael@0: 
michael@0: D3DBLENDOP ConvertBlendOp(GLenum blendOp)
michael@0: {
michael@0:     D3DBLENDOP d3dBlendOp = D3DBLENDOP_ADD;
michael@0: 
michael@0:     switch (blendOp)
michael@0:     {
michael@0:       case GL_FUNC_ADD:              d3dBlendOp = D3DBLENDOP_ADD;         break;
michael@0:       case GL_FUNC_SUBTRACT:         d3dBlendOp = D3DBLENDOP_SUBTRACT;    break;
michael@0:       case GL_FUNC_REVERSE_SUBTRACT: d3dBlendOp = D3DBLENDOP_REVSUBTRACT; break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dBlendOp;
michael@0: }
michael@0: 
michael@0: D3DSTENCILOP ConvertStencilOp(GLenum stencilOp)
michael@0: {
michael@0:     D3DSTENCILOP d3dStencilOp = D3DSTENCILOP_KEEP;
michael@0: 
michael@0:     switch (stencilOp)
michael@0:     {
michael@0:       case GL_ZERO:      d3dStencilOp = D3DSTENCILOP_ZERO;    break;
michael@0:       case GL_KEEP:      d3dStencilOp = D3DSTENCILOP_KEEP;    break;
michael@0:       case GL_REPLACE:   d3dStencilOp = D3DSTENCILOP_REPLACE; break;
michael@0:       case GL_INCR:      d3dStencilOp = D3DSTENCILOP_INCRSAT; break;
michael@0:       case GL_DECR:      d3dStencilOp = D3DSTENCILOP_DECRSAT; break;
michael@0:       case GL_INVERT:    d3dStencilOp = D3DSTENCILOP_INVERT;  break;
michael@0:       case GL_INCR_WRAP: d3dStencilOp = D3DSTENCILOP_INCR;    break;
michael@0:       case GL_DECR_WRAP: d3dStencilOp = D3DSTENCILOP_DECR;    break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dStencilOp;
michael@0: }
michael@0: 
michael@0: D3DTEXTUREADDRESS ConvertTextureWrap(GLenum wrap)
michael@0: {
michael@0:     D3DTEXTUREADDRESS d3dWrap = D3DTADDRESS_WRAP;
michael@0: 
michael@0:     switch (wrap)
michael@0:     {
michael@0:       case GL_REPEAT:            d3dWrap = D3DTADDRESS_WRAP;   break;
michael@0:       case GL_CLAMP_TO_EDGE:     d3dWrap = D3DTADDRESS_CLAMP;  break;
michael@0:       case GL_MIRRORED_REPEAT:   d3dWrap = D3DTADDRESS_MIRROR; break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dWrap;
michael@0: }
michael@0: 
michael@0: D3DCULL ConvertCullMode(GLenum cullFace, GLenum frontFace)
michael@0: {
michael@0:     D3DCULL cull = D3DCULL_CCW;
michael@0:     switch (cullFace)
michael@0:     {
michael@0:       case GL_FRONT:
michael@0:         cull = (frontFace == GL_CCW ? D3DCULL_CW : D3DCULL_CCW);
michael@0:         break;
michael@0:       case GL_BACK:
michael@0:         cull = (frontFace == GL_CCW ? D3DCULL_CCW : D3DCULL_CW);
michael@0:         break;
michael@0:       case GL_FRONT_AND_BACK:
michael@0:         cull = D3DCULL_NONE; // culling will be handled during draw
michael@0:         break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return cull;
michael@0: }
michael@0: 
michael@0: D3DCUBEMAP_FACES ConvertCubeFace(GLenum cubeFace)
michael@0: {
michael@0:     D3DCUBEMAP_FACES face = D3DCUBEMAP_FACE_POSITIVE_X;
michael@0: 
michael@0:     switch (cubeFace)
michael@0:     {
michael@0:       case GL_TEXTURE_CUBE_MAP_POSITIVE_X:
michael@0:         face = D3DCUBEMAP_FACE_POSITIVE_X;
michael@0:         break;
michael@0:       case GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
michael@0:         face = D3DCUBEMAP_FACE_NEGATIVE_X;
michael@0:         break;
michael@0:       case GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
michael@0:         face = D3DCUBEMAP_FACE_POSITIVE_Y;
michael@0:         break;
michael@0:       case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
michael@0:         face = D3DCUBEMAP_FACE_NEGATIVE_Y;
michael@0:         break;
michael@0:       case GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
michael@0:         face = D3DCUBEMAP_FACE_POSITIVE_Z;
michael@0:         break;
michael@0:       case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
michael@0:         face = D3DCUBEMAP_FACE_NEGATIVE_Z;
michael@0:         break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return face;
michael@0: }
michael@0: 
michael@0: DWORD ConvertColorMask(bool red, bool green, bool blue, bool alpha)
michael@0: {
michael@0:     return (red   ? D3DCOLORWRITEENABLE_RED   : 0) |
michael@0:            (green ? D3DCOLORWRITEENABLE_GREEN : 0) |
michael@0:            (blue  ? D3DCOLORWRITEENABLE_BLUE  : 0) |
michael@0:            (alpha ? D3DCOLORWRITEENABLE_ALPHA : 0);
michael@0: }
michael@0: 
michael@0: D3DTEXTUREFILTERTYPE ConvertMagFilter(GLenum magFilter, float maxAnisotropy)
michael@0: {
michael@0:     if (maxAnisotropy > 1.0f)
michael@0:     {
michael@0:         return D3DTEXF_ANISOTROPIC;
michael@0:     }
michael@0: 
michael@0:     D3DTEXTUREFILTERTYPE d3dMagFilter = D3DTEXF_POINT;
michael@0:     switch (magFilter)
michael@0:     {
michael@0:       case GL_NEAREST: d3dMagFilter = D3DTEXF_POINT;  break;
michael@0:       case GL_LINEAR:  d3dMagFilter = D3DTEXF_LINEAR; break;
michael@0:       default: UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return d3dMagFilter;
michael@0: }
michael@0: 
michael@0: void ConvertMinFilter(GLenum minFilter, D3DTEXTUREFILTERTYPE *d3dMinFilter, D3DTEXTUREFILTERTYPE *d3dMipFilter, float maxAnisotropy)
michael@0: {
michael@0:     switch (minFilter)
michael@0:     {
michael@0:       case GL_NEAREST:
michael@0:         *d3dMinFilter = D3DTEXF_POINT;
michael@0:         *d3dMipFilter = D3DTEXF_NONE;
michael@0:         break;
michael@0:       case GL_LINEAR:
michael@0:         *d3dMinFilter = D3DTEXF_LINEAR;
michael@0:         *d3dMipFilter = D3DTEXF_NONE;
michael@0:         break;
michael@0:       case GL_NEAREST_MIPMAP_NEAREST:
michael@0:         *d3dMinFilter = D3DTEXF_POINT;
michael@0:         *d3dMipFilter = D3DTEXF_POINT;
michael@0:         break;
michael@0:       case GL_LINEAR_MIPMAP_NEAREST:
michael@0:         *d3dMinFilter = D3DTEXF_LINEAR;
michael@0:         *d3dMipFilter = D3DTEXF_POINT;
michael@0:         break;
michael@0:       case GL_NEAREST_MIPMAP_LINEAR:
michael@0:         *d3dMinFilter = D3DTEXF_POINT;
michael@0:         *d3dMipFilter = D3DTEXF_LINEAR;
michael@0:         break;
michael@0:       case GL_LINEAR_MIPMAP_LINEAR:
michael@0:         *d3dMinFilter = D3DTEXF_LINEAR;
michael@0:         *d3dMipFilter = D3DTEXF_LINEAR;
michael@0:         break;
michael@0:       default:
michael@0:         *d3dMinFilter = D3DTEXF_POINT;
michael@0:         *d3dMipFilter = D3DTEXF_NONE;
michael@0:         UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     if (maxAnisotropy > 1.0f)
michael@0:     {
michael@0:         *d3dMinFilter = D3DTEXF_ANISOTROPIC;
michael@0:     }
michael@0: }
michael@0: 
michael@0: D3DFORMAT ConvertRenderbufferFormat(GLenum format)
michael@0: {
michael@0:     switch (format)
michael@0:     {
michael@0:       case GL_NONE:                 return D3DFMT_NULL;
michael@0:       case GL_RGBA4:
michael@0:       case GL_RGB5_A1:
michael@0:       case GL_RGBA8_OES:            return D3DFMT_A8R8G8B8;
michael@0:       case GL_RGB565:               return D3DFMT_R5G6B5;
michael@0:       case GL_RGB8_OES:             return D3DFMT_X8R8G8B8;
michael@0:       case GL_DEPTH_COMPONENT16:
michael@0:       case GL_STENCIL_INDEX8:       
michael@0:       case GL_DEPTH24_STENCIL8_OES: return D3DFMT_D24S8;
michael@0:       default: UNREACHABLE();       return D3DFMT_A8R8G8B8;
michael@0:     }
michael@0: }
michael@0: 
michael@0: D3DMULTISAMPLE_TYPE GetMultisampleTypeFromSamples(GLsizei samples)
michael@0: {
michael@0:     if (samples <= 1)
michael@0:         return D3DMULTISAMPLE_NONE;
michael@0:     else
michael@0:         return (D3DMULTISAMPLE_TYPE)samples;
michael@0: }
michael@0: 
michael@0: }
michael@0: 
michael@0: namespace d3d9_gl
michael@0: {
michael@0: 
michael@0: unsigned int GetStencilSize(D3DFORMAT stencilFormat)
michael@0: {
michael@0:     if (stencilFormat == D3DFMT_INTZ)
michael@0:     {
michael@0:         return 8;
michael@0:     }
michael@0:     switch(stencilFormat)
michael@0:     {
michael@0:       case D3DFMT_D24FS8:
michael@0:       case D3DFMT_D24S8:
michael@0:         return 8;
michael@0:       case D3DFMT_D24X4S4:
michael@0:         return 4;
michael@0:       case D3DFMT_D15S1:
michael@0:         return 1;
michael@0:       case D3DFMT_D16_LOCKABLE:
michael@0:       case D3DFMT_D32:
michael@0:       case D3DFMT_D24X8:
michael@0:       case D3DFMT_D32F_LOCKABLE:
michael@0:       case D3DFMT_D16:
michael@0:         return 0;
michael@0:     //case D3DFMT_D32_LOCKABLE:  return 0;   // DirectX 9Ex only
michael@0:     //case D3DFMT_S8_LOCKABLE:   return 8;   // DirectX 9Ex only
michael@0:       default:
michael@0:         return 0;
michael@0:     }
michael@0: }
michael@0: 
michael@0: unsigned int GetAlphaSize(D3DFORMAT colorFormat)
michael@0: {
michael@0:     switch (colorFormat)
michael@0:     {
michael@0:       case D3DFMT_A16B16G16R16F:
michael@0:         return 16;
michael@0:       case D3DFMT_A32B32G32R32F:
michael@0:         return 32;
michael@0:       case D3DFMT_A2R10G10B10:
michael@0:         return 2;
michael@0:       case D3DFMT_A8R8G8B8:
michael@0:         return 8;
michael@0:       case D3DFMT_A1R5G5B5:
michael@0:         return 1;
michael@0:       case D3DFMT_X8R8G8B8:
michael@0:       case D3DFMT_R5G6B5:
michael@0:         return 0;
michael@0:       default:
michael@0:         return 0;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLsizei GetSamplesFromMultisampleType(D3DMULTISAMPLE_TYPE type)
michael@0: {
michael@0:     if (type == D3DMULTISAMPLE_NONMASKABLE)
michael@0:         return 0;
michael@0:     else
michael@0:         return type;
michael@0: }
michael@0: 
michael@0: bool IsFormatChannelEquivalent(D3DFORMAT d3dformat, GLenum format)
michael@0: {
michael@0:     switch (d3dformat)
michael@0:     {
michael@0:       case D3DFMT_L8:
michael@0:         return (format == GL_LUMINANCE);
michael@0:       case D3DFMT_A8L8:
michael@0:         return (format == GL_LUMINANCE_ALPHA);
michael@0:       case D3DFMT_DXT1:
michael@0:         return (format == GL_COMPRESSED_RGBA_S3TC_DXT1_EXT || format == GL_COMPRESSED_RGB_S3TC_DXT1_EXT);
michael@0:       case D3DFMT_DXT3:
michael@0:         return (format == GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE);
michael@0:       case D3DFMT_DXT5:
michael@0:         return (format == GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE);
michael@0:       case D3DFMT_A8R8G8B8:
michael@0:       case D3DFMT_A16B16G16R16F:
michael@0:       case D3DFMT_A32B32G32R32F:
michael@0:         return (format == GL_RGBA || format == GL_BGRA_EXT);
michael@0:       case D3DFMT_X8R8G8B8:
michael@0:         return (format == GL_RGB);
michael@0:       default:
michael@0:         if (d3dformat == D3DFMT_INTZ && gl::IsDepthTexture(format))
michael@0:             return true;
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: GLenum ConvertBackBufferFormat(D3DFORMAT format)
michael@0: {
michael@0:     switch (format)
michael@0:     {
michael@0:       case D3DFMT_A4R4G4B4: return GL_RGBA4;
michael@0:       case D3DFMT_A8R8G8B8: return GL_RGBA8_OES;
michael@0:       case D3DFMT_A1R5G5B5: return GL_RGB5_A1;
michael@0:       case D3DFMT_R5G6B5:   return GL_RGB565;
michael@0:       case D3DFMT_X8R8G8B8: return GL_RGB8_OES;
michael@0:       default:
michael@0:         UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return GL_RGBA4;
michael@0: }
michael@0: 
michael@0: GLenum ConvertDepthStencilFormat(D3DFORMAT format)
michael@0: {
michael@0:     if (format == D3DFMT_INTZ)
michael@0:     {
michael@0:         return GL_DEPTH24_STENCIL8_OES;
michael@0:     }
michael@0:     switch (format)
michael@0:     {
michael@0:       case D3DFMT_D16:
michael@0:       case D3DFMT_D24X8:
michael@0:         return GL_DEPTH_COMPONENT16;
michael@0:       case D3DFMT_D24S8:
michael@0:         return GL_DEPTH24_STENCIL8_OES;
michael@0:       case D3DFMT_UNKNOWN:
michael@0:         return GL_NONE;
michael@0:       default:
michael@0:         UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return GL_DEPTH24_STENCIL8_OES;
michael@0: }
michael@0: 
michael@0: GLenum ConvertRenderTargetFormat(D3DFORMAT format)
michael@0: {
michael@0:     if (format == D3DFMT_INTZ)
michael@0:     {
michael@0:         return GL_DEPTH24_STENCIL8_OES;
michael@0:     }
michael@0:     
michael@0:     switch (format)
michael@0:     {
michael@0:       case D3DFMT_A4R4G4B4: return GL_RGBA4;
michael@0:       case D3DFMT_A8R8G8B8: return GL_RGBA8_OES;
michael@0:       case D3DFMT_A1R5G5B5: return GL_RGB5_A1;
michael@0:       case D3DFMT_R5G6B5:   return GL_RGB565;
michael@0:       case D3DFMT_X8R8G8B8: return GL_RGB8_OES;
michael@0:       case D3DFMT_D16:
michael@0:       case D3DFMT_D24X8:
michael@0:         return GL_DEPTH_COMPONENT16;
michael@0:       case D3DFMT_D24S8:
michael@0:         return GL_DEPTH24_STENCIL8_OES;
michael@0:       case D3DFMT_UNKNOWN:
michael@0:         return GL_NONE;
michael@0:       default:
michael@0:         UNREACHABLE();
michael@0:     }
michael@0: 
michael@0:     return GL_RGBA4;
michael@0: }
michael@0: 
michael@0: GLenum GetEquivalentFormat(D3DFORMAT format)
michael@0: {
michael@0:     if (format == D3DFMT_INTZ)
michael@0:         return GL_DEPTH24_STENCIL8_OES;
michael@0:     if (format == D3DFMT_NULL)
michael@0:         return GL_NONE;
michael@0: 
michael@0:     switch (format)
michael@0:     {
michael@0:       case D3DFMT_A4R4G4B4:             return GL_RGBA4;
michael@0:       case D3DFMT_A8R8G8B8:             return GL_RGBA8_OES;
michael@0:       case D3DFMT_A1R5G5B5:             return GL_RGB5_A1;
michael@0:       case D3DFMT_R5G6B5:               return GL_RGB565;
michael@0:       case D3DFMT_X8R8G8B8:             return GL_RGB8_OES;
michael@0:       case D3DFMT_D16:                  return GL_DEPTH_COMPONENT16;
michael@0:       case D3DFMT_D24S8:                return GL_DEPTH24_STENCIL8_OES;
michael@0:       case D3DFMT_UNKNOWN:              return GL_NONE;
michael@0:       case D3DFMT_DXT1:                 return GL_COMPRESSED_RGBA_S3TC_DXT1_EXT;
michael@0:       case D3DFMT_DXT3:                 return GL_COMPRESSED_RGBA_S3TC_DXT3_ANGLE;
michael@0:       case D3DFMT_DXT5:                 return GL_COMPRESSED_RGBA_S3TC_DXT5_ANGLE;
michael@0:       case D3DFMT_A32B32G32R32F:        return GL_RGBA32F_EXT;
michael@0:       case D3DFMT_A16B16G16R16F:        return GL_RGBA16F_EXT;
michael@0:       case D3DFMT_L8:                   return GL_LUMINANCE8_EXT;
michael@0:       case D3DFMT_A8L8:                 return GL_LUMINANCE8_ALPHA8_EXT;
michael@0:       default:              UNREACHABLE();
michael@0:         return GL_NONE;
michael@0:     }
michael@0: }
michael@0: 
michael@0: }
michael@0: 
michael@0: namespace d3d9
michael@0: {
michael@0: 
michael@0: bool IsCompressedFormat(D3DFORMAT surfaceFormat)
michael@0: {
michael@0:     switch(surfaceFormat)
michael@0:     {
michael@0:       case D3DFMT_DXT1:
michael@0:       case D3DFMT_DXT2:
michael@0:       case D3DFMT_DXT3:
michael@0:       case D3DFMT_DXT4:
michael@0:       case D3DFMT_DXT5:
michael@0:         return true;
michael@0:       default:
michael@0:         return false;
michael@0:     }
michael@0: }
michael@0: 
michael@0: size_t ComputeRowSize(D3DFORMAT format, unsigned int width)
michael@0: {
michael@0:     if (format == D3DFMT_INTZ)
michael@0:     {
michael@0:         return 4 * width;
michael@0:     }
michael@0:     switch (format)
michael@0:     {
michael@0:       case D3DFMT_L8:
michael@0:           return 1 * width;
michael@0:       case D3DFMT_A8L8:
michael@0:           return 2 * width;
michael@0:       case D3DFMT_X8R8G8B8:
michael@0:       case D3DFMT_A8R8G8B8:
michael@0:         return 4 * width;
michael@0:       case D3DFMT_A16B16G16R16F:
michael@0:         return 8 * width;
michael@0:       case D3DFMT_A32B32G32R32F:
michael@0:         return 16 * width;
michael@0:       case D3DFMT_DXT1:
michael@0:         return 8 * ((width + 3) / 4);
michael@0:       case D3DFMT_DXT3:
michael@0:       case D3DFMT_DXT5:
michael@0:         return 16 * ((width + 3) / 4);
michael@0:       default:
michael@0:         UNREACHABLE();
michael@0:         return 0;
michael@0:     }
michael@0: }
michael@0: 
michael@0: }