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This commit is contained in:
Branimir Karadžić 2014-04-06 21:30:32 -07:00
parent 6bccda7e3d
commit b4ed970363
1 changed files with 84 additions and 49 deletions
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133
src/renderer_gl.cpp
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@ -654,18 +654,37 @@ namespace bgfx
return 0 == err ? result : 0;
}
static void checkCmpFormat(GLint* _cmp, uint32_t _num, TextureFormat::Enum _fmt, GLint _glfmt)
void setTextureFormat(TextureFormat::Enum _format, GLenum _internalFmt, GLenum _fmt, GLenum _type = GL_ZERO)
{
for (uint32_t ii = 0; ii < _num; ++ii)
TextureFormatInfo& tfi = s_textureFormat[_format];
tfi.m_internalFmt = _internalFmt;
tfi.m_fmt = _fmt;
tfi.m_type = _type;
}
bool isTextureFormatValid(TextureFormat::Enum _format)
{
GLuint id;
GL_CHECK(glGenTextures(1, &id) );
GL_CHECK(glBindTexture(GL_TEXTURE_2D, id) );
const TextureFormatInfo& tfi = s_textureFormat[_format];
if (isCompressed(_format) )
{
if (_glfmt == _cmp[ii])
{
s_textureFormat[_fmt].m_fmt = _glfmt;
s_textureFormat[_fmt].m_internalFmt = _glfmt;
s_textureFormat[_fmt].m_supported = true;
return;
}
glCompressedTexImage2D(GL_TEXTURE_2D, 0, tfi.m_internalFmt, 16, 16, 0, (16*16*getBitsPerPixel(_format) )/8, NULL);
}
else
{
glTexImage2D(GL_TEXTURE_2D, 0, tfi.m_internalFmt, 16, 16, 0, tfi.m_fmt, tfi.m_type, NULL);
}
GLenum err = glGetError();
BX_WARN(0 == err, "TextureFormat::%s is not supported (%x: %s).", getName(_format), err, glEnumName(err) );
GL_CHECK(glDeleteTextures(1, &id) );
return 0 == err;
}
struct RendererContext
@ -1151,7 +1170,7 @@ namespace bgfx
;
if (!s_textureFormat[TextureFormat::BC1].m_supported
&& (s_textureFormat[TextureFormat::BC2].m_supported || s_textureFormat[TextureFormat::BC3].m_supported) )
&& ( s_textureFormat[TextureFormat::BC2].m_supported || s_textureFormat[TextureFormat::BC3].m_supported) )
{
// If RGBA_S3TC_DXT1 is not supported, maybe RGB_S3TC_DXT1 is?
for (GLint ii = 0; ii < numCmpFormats; ++ii)
@ -1178,22 +1197,15 @@ namespace bgfx
if (s_extension[Extension::EXT_texture_compression_latc].m_supported)
{
checkCmpFormat(cmpFormat, numCmpFormats, TextureFormat::BC4, GL_COMPRESSED_LUMINANCE_LATC1_EXT);
checkCmpFormat(cmpFormat, numCmpFormats, TextureFormat::BC5, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT);
setTextureFormat(TextureFormat::BC4, GL_COMPRESSED_LUMINANCE_LATC1_EXT, GL_COMPRESSED_LUMINANCE_LATC1_EXT);
setTextureFormat(TextureFormat::BC5, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT, GL_COMPRESSED_LUMINANCE_ALPHA_LATC2_EXT);
}
if (s_extension[Extension::ARB_texture_compression_rgtc].m_supported
|| s_extension[Extension::EXT_texture_compression_rgtc].m_supported)
{
s_textureFormat[TextureFormat::BC4].m_fmt = GL_COMPRESSED_RED_RGTC1;
s_textureFormat[TextureFormat::BC4].m_internalFmt = GL_COMPRESSED_RED_RGTC1;
s_textureFormat[TextureFormat::BC4].m_supported = true;
s_textureFormat[TextureFormat::BC5].m_fmt = GL_COMPRESSED_RG_RGTC2;
s_textureFormat[TextureFormat::BC5].m_internalFmt = GL_COMPRESSED_RG_RGTC2;
s_textureFormat[TextureFormat::BC5].m_supported = true;
// checkCmpFormat(cmpFormat, numCmpFormats, TextureFormat::BC4, GL_COMPRESSED_RED_RGTC1);
// checkCmpFormat(cmpFormat, numCmpFormats, TextureFormat::BC5, GL_COMPRESSED_RG_RGTC2);
setTextureFormat(TextureFormat::BC4, GL_COMPRESSED_RED_RGTC1, GL_COMPRESSED_RED_RGTC1);
setTextureFormat(TextureFormat::BC5, GL_COMPRESSED_RG_RGTC2, GL_COMPRESSED_RG_RGTC2);
}
bool etc1Supported = s_extension[Extension::OES_compressed_ETC1_RGB8_texture].m_supported;
@ -1225,6 +1237,57 @@ namespace bgfx
s_textureFormat[TextureFormat::PTC22].m_supported |= ptc2Supported;
s_textureFormat[TextureFormat::PTC24].m_supported |= ptc2Supported;
if (BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES)
&& BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 30) )
{
setTextureFormat(TextureFormat::R16, GL_R16UI, GL_RED_INTEGER, GL_UNSIGNED_SHORT);
setTextureFormat(TextureFormat::RGBA16, GL_RGBA16UI, GL_RGBA_INTEGER, GL_UNSIGNED_SHORT);
}
if (s_extension[Extension::EXT_texture_format_BGRA8888].m_supported
|| s_extension[Extension::EXT_bgra].m_supported
|| s_extension[Extension::IMG_texture_format_BGRA8888].m_supported
|| s_extension[Extension::APPLE_texture_format_BGRA8888].m_supported)
{
if (BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL) )
{
m_readPixelsFmt = GL_BGRA;
}
s_textureFormat[TextureFormat::BGRA8].m_fmt = GL_BGRA;
// Mixing GLES and GL extensions here. OpenGL EXT_bgra and
// APPLE_texture_format_BGRA8888 wants
// format to be BGRA but internal format to stay RGBA, but
// EXT_texture_format_BGRA8888 wants both format and internal
// format to be BGRA.
//
// Reference:
// https://www.khronos.org/registry/gles/extensions/EXT/EXT_texture_format_BGRA8888.txt
// https://www.opengl.org/registry/specs/EXT/bgra.txt
// https://www.khronos.org/registry/gles/extensions/APPLE/APPLE_texture_format_BGRA8888.txt
if (!s_extension[Extension::EXT_bgra].m_supported
&& !s_extension[Extension::APPLE_texture_format_BGRA8888].m_supported)
{
s_textureFormat[TextureFormat::BGRA8].m_internalFmt = GL_BGRA;
}
if (!isTextureFormatValid(TextureFormat::BGRA8) )
{
// Revert back to RGBA if texture can't be created.
setTextureFormat(TextureFormat::BGRA8, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE);
}
}
for (uint32_t ii = 0; ii < TextureFormat::Count; ++ii)
{
if (TextureFormat::Unknown != ii
&& TextureFormat::UnknownDepth != ii)
{
s_textureFormat[ii].m_supported = isTextureFormatValid( (TextureFormat::Enum)ii);
}
}
uint64_t supportedCompressedFormats = 0
| (s_textureFormat[TextureFormat::BC1 ].m_supported ? BGFX_CAPS_TEXTURE_FORMAT_BC1 : 0)
| (s_textureFormat[TextureFormat::BC2 ].m_supported ? BGFX_CAPS_TEXTURE_FORMAT_BC2 : 0)
@ -1347,34 +1410,6 @@ namespace bgfx
m_readPixelsFmt = GL_RGBA;
}
if (s_extension[Extension::EXT_texture_format_BGRA8888].m_supported
|| s_extension[Extension::EXT_bgra].m_supported
|| s_extension[Extension::IMG_texture_format_BGRA8888].m_supported
|| s_extension[Extension::APPLE_texture_format_BGRA8888].m_supported)
{
if (BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGL) )
{
m_readPixelsFmt = GL_BGRA;
}
s_textureFormat[TextureFormat::BGRA8].m_fmt = GL_BGRA;
// Mixing GLES and GL extensions here. OpenGL EXT_bgra and
// APPLE_texture_format_BGRA8888 wants
// format to be BGRA but internal format to stay RGBA, but
// EXT_texture_format_BGRA8888 wants both format and internal
// format to be BGRA.
//
// Reference:
// https://www.khronos.org/registry/gles/extensions/EXT/EXT_texture_format_BGRA8888.txt
// https://www.opengl.org/registry/specs/EXT/bgra.txt
// https://www.khronos.org/registry/gles/extensions/APPLE/APPLE_texture_format_BGRA8888.txt
if (!s_extension[Extension::EXT_bgra].m_supported && !s_extension[Extension::APPLE_texture_format_BGRA8888].m_supported)
{
s_textureFormat[TextureFormat::BGRA8].m_internalFmt = GL_BGRA;
}
}
if (BX_ENABLED(BGFX_CONFIG_RENDERER_OPENGLES >= 30) )
{
g_caps.supported |= BGFX_CAPS_INSTANCING;