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Removed mipmapping restriction on non-power-of-two Images.

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--HG--
branch : minor
This commit is contained in:
Alex Szpakowski
2014-08-25 01:37:05 -03:00
parent 71c71985d3
commit 766939bdd5
1 changed files with 25 additions and 37 deletions
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src/modules/graphics/opengl/Image.cpp
+25 -37
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@@ -67,6 +67,15 @@ Image::Image(love::image::CompressedData *cdata, const Flags &flags)
{
width = cdata->getWidth(0);
height = cdata->getHeight(0);
if (flags.mipmaps)
{
// The mipmap texture data comes from the CompressedData in this case,
// so we should make sure it has all necessary mipmap levels.
if (cdata->getMipmapCount() < (int) log2(std::max(width, height)) + 1)
throw love::Exception("Image cannot have mipmaps: compressed image data does not have all required mipmap levels.");
}
preload();
++imageCount;
@@ -168,10 +177,8 @@ float Image::getMipmapSharpness() const
void Image::bind() const
{
if (texture == 0)
return;
gl.bindTexture(texture);
if (texture != 0)
gl.bindTexture(texture);
}
void Image::preload()
@@ -213,7 +220,7 @@ void Image::unload()
void Image::uploadCompressedData()
{
GLenum format = getCompressedFormat(cdata->getFormat());
GLenum iformat = getCompressedFormat(cdata->getFormat());
int count = flags.mipmaps ? cdata->getMipmapCount() : 1;
// We have to inform OpenGL if the image doesn't have all mipmap levels.
@@ -223,39 +230,29 @@ void Image::uploadCompressedData()
{
glCompressedTexImage2D(GL_TEXTURE_2D,
i,
format,
iformat,
cdata->getWidth(i),
cdata->getHeight(i),
0,
GLsizei(cdata->getSize(i)),
(GLsizei) cdata->getSize(i),
cdata->getData(i));
}
}
void Image::uploadImageData()
{
if (flags.mipmaps)
{
// NPOT mipmap generation isn't always supported on old GPUs/drivers...
if (width != next_p2(width) || height != next_p2(height))
{
throw love::Exception("Cannot create mipmaps: "
"image does not have power-of-two dimensions.");
}
if (!GLAD_VERSION_3_0 && !GLAD_ARB_framebuffer_object)
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
}
GLenum iformat = flags.sRGB ? GL_SRGB8_ALPHA8 : GL_RGBA8;
if (flags.mipmaps && !(GLAD_VERSION_3_0 || GLAD_ARB_framebuffer_object))
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
{
love::thread::Lock lock(data->getMutex());
glTexImage2D(GL_TEXTURE_2D,
0,
iformat,
(GLsizei)width,
(GLsizei)height,
width,
height,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
@@ -267,8 +264,10 @@ void Image::uploadImageData()
if (GLAD_VERSION_3_0 || GLAD_ARB_framebuffer_object)
{
// Driver bug: http://www.opengl.org/wiki/Common_Mistakes#Automatic_mipmap_generation
#if defined(LOVE_WINDOWS) || defined(LOVE_LINUX)
if (gl.getVendor() == OpenGL::VENDOR_ATI_AMD)
glEnable(GL_TEXTURE_2D);
#endif
glGenerateMipmap(GL_TEXTURE_2D);
}
@@ -378,23 +377,10 @@ void Image::unloadVolatile()
bool Image::refresh()
{
// No effect if the texture hasn't been created yet.
if (texture == 0)
if (texture == 0 || usingDefaultTexture)
return false;
if (usingDefaultTexture)
{
uploadDefaultTexture();
return true;
}
while (glGetError() != GL_NO_ERROR); // Clear errors.
uploadTexture();
GLenum glerr = glGetError();
if (glerr != GL_NO_ERROR)
throw love::Exception("Cannot refresh image (error code 0x%x)", glerr);
return true;
}
@@ -509,9 +495,11 @@ bool Image::hasCompressedTextureSupport(image::CompressedData::Format format)
switch (format)
{
case image::CompressedData::FORMAT_DXT1:
return GLAD_EXT_texture_compression_s3tc || GLAD_EXT_texture_compression_dxt1;
case image::CompressedData::FORMAT_DXT3:
return GLAD_EXT_texture_compression_s3tc || GLAD_ANGLE_texture_compression_dxt3;
case image::CompressedData::FORMAT_DXT5:
return GLAD_EXT_texture_compression_s3tc;
return GLAD_EXT_texture_compression_s3tc || GLAD_ANGLE_texture_compression_dxt5;
case image::CompressedData::FORMAT_BC4:
case image::CompressedData::FORMAT_BC4s:
case image::CompressedData::FORMAT_BC5: