summaryrefslogtreecommitdiff
path: root/src/openglgraphics.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/openglgraphics.cpp')
-rw-r--r--src/openglgraphics.cpp57
1 files changed, 52 insertions, 5 deletions
diff --git a/src/openglgraphics.cpp b/src/openglgraphics.cpp
index e5523c479..6e0bbf829 100644
--- a/src/openglgraphics.cpp
+++ b/src/openglgraphics.cpp
@@ -150,11 +150,12 @@ bool OpenGLGraphics::setVideoMode(int w, int h, int bpp, bool fs,
splitToStringSet(mExtensions, glExtensions, ' ');
+ updateTextureFormat();
updateMemoryInfo();
GLint texSize;
bool rectTex = supportExtension("GL_ARB_texture_rectangle");
- if (rectTex)
+ if (rectTex && Image::getInternalTextureType() == 4)
{
logger->log1("using GL_ARB_texture_rectangle");
Image::mTextureType = GL_TEXTURE_RECTANGLE_ARB;
@@ -204,8 +205,8 @@ static inline void drawQuad(Image *image,
dstX, dstY + height
};
- glVertexPointer(2, GL_FLOAT, 0, &vert);
- glTexCoordPointer(2, GL_INT, 0, &tex);
+ glVertexPointer(2, GL_INT, 0, &vert);
+ glTexCoordPointer(2, GL_FLOAT, 0, &tex);
glDrawArrays(GL_QUADS, 0, 4);
}
@@ -266,8 +267,8 @@ static inline void drawRescaledQuad(Image *image,
dstX, dstY + desiredHeight
};
- glVertexPointer(2, GL_FLOAT, 0, &vert);
- glTexCoordPointer(2, GL_INT, 0, &tex);
+ glVertexPointer(2, GL_INT, 0, &vert);
+ glTexCoordPointer(2, GL_FLOAT, 0, &tex);
glDrawArrays(GL_QUADS, 0, 4);
}
@@ -1512,4 +1513,50 @@ int OpenGLGraphics::getMemoryUsage()
return 0;
}
+void OpenGLGraphics::updateTextureFormat()
+{
+ if (!config.getBoolValue("compresstextures"))
+ return;
+
+ if (supportExtension("GL_ARB_texture_compression"))
+ {
+ if (supportExtension("GL_EXT_texture_compression_s3tc")
+ || supportExtension("3DFX_texture_compression_FXT1"))
+ {
+ GLint num;
+ GLint *formats = nullptr;
+ glGetIntegerv(GL_NUM_COMPRESSED_TEXTURE_FORMATS, &num);
+ logger->log("support %d compressed formats", num);
+ formats = new GLint[num > 10 ? num : 10];
+ glGetIntegerv(GL_COMPRESSED_TEXTURE_FORMATS, formats);
+ for (int f = 0; f < num; f ++)
+ {
+ if (formats[f] == GL_COMPRESSED_RGBA_S3TC_DXT5_EXT)
+ {
+ delete []formats;
+ Image::setInternalTextureType(
+ GL_COMPRESSED_RGBA_S3TC_DXT5_EXT);
+ logger->log("using s3tc texture compression");
+ return;
+ }
+ else if (formats[f] == GL_COMPRESSED_RGBA_FXT1_3DFX)
+ {
+ delete []formats;
+ Image::setInternalTextureType(
+ GL_COMPRESSED_RGBA_FXT1_3DFX);
+ logger->log("using fxt1 texture compression");
+ return;
+ }
+ }
+ Image::setInternalTextureType(GL_COMPRESSED_RGBA_ARB);
+ logger->log("using texture compression");
+ }
+ else
+ {
+ Image::setInternalTextureType(GL_COMPRESSED_RGBA_ARB);
+ logger->log("using texture compression");
+ }
+ }
+}
+
#endif // USE_OPENGL