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Added OpenGL support for pixel formats A8/L8/LA8 

Former-commit-id: b17942f7bf22daf90ddf5d8093da6c26b64a67ce
This commit is contained in:
Lynix 2014-12-10 19:01:03 +01:00
parent 96798da027
commit 7316cbb694
3 changed files with 96 additions and 9 deletions
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1
include/Nazara/Renderer/OpenGL.hpp
View File

@ -69,6 +69,7 @@ class NAZARA_API NzOpenGL
GLenum dataFormat;
GLenum dataType;
GLint internalFormat;
GLint swizzle[4];
};
NzOpenGL() = delete;

83
src/Nazara/Renderer/OpenGL.cpp
View File

@ -1463,10 +1463,41 @@ void NzOpenGL::SetViewport(const NzRecti& viewport)
bool NzOpenGL::TranslateFormat(nzPixelFormat pixelFormat, Format* format, FormatType type)
{
// Par défaut
format->swizzle[0] = GL_RED;
format->swizzle[1] = GL_GREEN;
format->swizzle[2] = GL_BLUE;
format->swizzle[3] = GL_ALPHA;
switch (pixelFormat)
{
case nzPixelFormat_A8:
return false; ///FIXME: Tester le mode d'OpenGL pour se permettre une fonctionnalité dépréciée ?
if (type == FormatType_Texture) // Format supporté uniquement par les textures
{
if (GetVersion() >= 300)
{
format->dataFormat = GL_RED;
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = GL_R8;
// Simulation du format
format->swizzle[0] = GL_ONE;
format->swizzle[1] = GL_ONE;
format->swizzle[2] = GL_ONE;
format->swizzle[3] = GL_RED;
}
else
{
// Le bon vieux format GL_ALPHA
format->dataFormat = GL_ALPHA;
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = GL_ALPHA;
}
return true;
}
else
return false;
case nzPixelFormat_BGR8:
format->dataFormat = GL_BGR;
@ -1499,7 +1530,57 @@ bool NzOpenGL::TranslateFormat(nzPixelFormat pixelFormat, Format* format, Format
return true;
case nzPixelFormat_L8:
if (type == FormatType_Texture) // Format supporté uniquement par les textures
{
if (GetVersion() >= 300)
{
format->dataFormat = GL_RED;
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = GL_R8;
// Simulation du format
format->swizzle[0] = GL_RED;
format->swizzle[1] = GL_RED;
format->swizzle[2] = GL_RED;
format->swizzle[3] = GL_ONE;
}
else
{
format->dataFormat = 0x1909; // GL_LUMINANCE
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = 0x1909; // GL_LUMINANCE
}
return true;
}
else
return false;
case nzPixelFormat_LA8:
if (type == FormatType_Texture) // Format supporté uniquement par les textures
{
if (GetVersion() >= 300)
{
format->dataFormat = GL_RG;
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = GL_RG8;
// Simulation du format
format->swizzle[0] = GL_RED;
format->swizzle[1] = GL_RED;
format->swizzle[2] = GL_RED;
format->swizzle[3] = GL_GREEN;
}
else
{
format->dataFormat = 0x190A; // GL_LUMINANCE_ALPHA
format->dataType = GL_UNSIGNED_BYTE;
format->internalFormat = 0x190A; // GL_LUMINANCE_ALPHA;
}
return true;
}
else
return false;
case nzPixelFormat_R8:

19
src/Nazara/Renderer/Texture.cpp
View File

@ -133,6 +133,15 @@ namespace
return false;
}
// Application du swizzle
if (NzOpenGL::GetVersion() >= 300)
{
glTexParameteri(target, GL_TEXTURE_SWIZZLE_R, openGLFormat.swizzle[0]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_G, openGLFormat.swizzle[1]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_B, openGLFormat.swizzle[2]);
glTexParameteri(target, GL_TEXTURE_SWIZZLE_A, openGLFormat.swizzle[3]);
}
return true;
}
@ -1226,8 +1235,11 @@ bool NzTexture::IsFormatSupported(nzPixelFormat format)
switch (format)
{
// Formats de base
case nzPixelFormat_A8:
case nzPixelFormat_BGR8:
case nzPixelFormat_BGRA8:
case nzPixelFormat_L8:
case nzPixelFormat_LA8:
case nzPixelFormat_RGB8:
case nzPixelFormat_RGBA8:
return true;
@ -1272,13 +1284,6 @@ bool NzTexture::IsFormatSupported(nzPixelFormat format)
case nzPixelFormat_RGBA32UI:
return NzOpenGL::GetVersion() >= 300;
// Dépréciés depuis OpenGL 3
///FIXME: Accepter si le contexte OpenGL est de compatibilité/OpenGL 2 ?
case nzPixelFormat_A8:
case nzPixelFormat_L8:
case nzPixelFormat_LA8:
return false;
// Formats de profondeur (Supportés avec les FBOs)
case nzPixelFormat_Depth16:
case nzPixelFormat_Depth24: