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Code cleanup

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--HG--
branch : image-CompressedData
This commit is contained in:
Alex Szpakowski
2013-04-05 18:55:44 -03:00
parent 5301026f3c
commit 8a8adcce39
11 changed files with 129 additions and 90 deletions
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src/modules/graphics/opengl/Image.cpp
+86 -67
View File
@@ -24,8 +24,6 @@
#include <cstring> // For memcpy
#include <algorithm> // for min/max
#include <iostream>
namespace love
{
namespace graphics
@@ -146,81 +144,102 @@ void Image::drawq(love::graphics::Quad *quad, float x, float y, float angle, flo
drawv(t, v);
}
void Image::checkMipmapsCreated()
void Image::uploadCompressedMipmaps()
{
if (mipmapsCreated || (filter.mipmap != FILTER_NEAREST && filter.mipmap != FILTER_LINEAR))
if (!isCompressed || !cdata || !hasCompressedTextureSupport(cdata->getType()))
return;
if (!(isCompressed && cdata) && !hasMipmapSupport())
throw love::Exception("Mipmap filtering is not supported on this system.");
// Some old drivers claim support for NPOT textures, but fail when creating mipmaps.
// we can't detect which systems will do this, so we fail gracefully for all NPOT images.
int w = int(width), h = int(height);
if (!isCompressed && (w != next_p2(w) || h != next_p2(h)))
throw love::Exception("Cannot create mipmaps: image does not have power of two dimensions.");
bind();
if (isCompressed && cdata && hasCompressedTextureSupport(cdata->getType()))
int numMipmaps = cdata->getNumMipmaps();
// We have to inform OpenGL if the image doesn't have all mipmap levels.
if (GLEE_VERSION_1_2 || GLEE_SGIS_texture_lod)
{
int numMipmaps = cdata->getNumMipmaps();
// We have to inform OpenGL if the image doesn't have all mipmap levels.
if (GLEE_VERSION_1_2 || GLEE_SGIS_texture_lod)
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, numMipmaps - 1);
else if (cdata->getWidth(numMipmaps-1) > 1 || cdata->getHeight(numMipmaps-1) > 1)
{
// Telling OpenGL to ignore certain levels isn't always supported.
throw love::Exception("Cannot load mipmaps: "
"compressed image does not have all required levels.");
}
GLenum format = getCompressedFormat(cdata->getType());
for (int i = 1; i < numMipmaps; i++)
{
glCompressedTexImage2DARB(GL_TEXTURE_2D,
i,
format,
cdata->getWidth(i),
cdata->getHeight(i),
0,
GLsizei(cdata->getSize(i)),
cdata->getData(i));
}
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, numMipmaps - 1);
}
else if (data && hasNpot() && (GLEE_VERSION_3_0 || GLEE_ARB_framebuffer_object))
else if (cdata->getWidth(numMipmaps-1) > 1 || cdata->getHeight(numMipmaps-1) > 1)
{
// Telling OpenGL to ignore certain levels isn't always supported.
throw love::Exception("Cannot load mipmaps: "
"compressed image does not have all required levels.");
}
for (int i = 1; i < numMipmaps; i++)
{
glCompressedTexImage2DARB(GL_TEXTURE_2D,
i,
getCompressedFormat(cdata->getType()),
cdata->getWidth(i),
cdata->getHeight(i),
0,
GLsizei(cdata->getSize(i)),
cdata->getData(i));
}
}
void Image::createMipmaps()
{
if (!data)
return;
if (!hasMipmapSupport())
throw love::Exception("Mipmap filtering is not supported on this system.");
// Some old drivers claim support for NPOT textures, but fail when creating
// mipmaps. We can't detect which systems will do this, so we fail gracefully
// for all NPOT images.
int w = int(width), h = int(height);
if (w != next_p2(w) || h != next_p2(h))
{
throw love::Exception("Cannot create mipmaps: "
"image does not have power of two dimensions.");
}
bind();
if (hasNpot() && (GLEE_VERSION_3_0 || GLEE_ARB_framebuffer_object))
{
// AMD/ATI drivers have several bugs when generating mipmaps,
// re-uploading the entire base image seems to be required.
glTexImage2D(GL_TEXTURE_2D,
0,
GL_RGBA8,
(GLsizei)width,
(GLsizei)height,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
data->getData());
0,
GL_RGBA8,
(GLsizei)width,
(GLsizei)height,
0,
GL_RGBA,
GL_UNSIGNED_BYTE,
data->getData());
// More bugs: http://www.opengl.org/wiki/Common_Mistakes#Automatic_mipmap_generation
glEnable(GL_TEXTURE_2D);
glGenerateMipmap(GL_TEXTURE_2D);
}
else if (data)
else
{
glTexParameteri(GL_TEXTURE_2D, GL_GENERATE_MIPMAP, GL_TRUE);
glTexSubImage2D(GL_TEXTURE_2D,
0,
0,
0,
(GLsizei)width,
(GLsizei)height,
GL_RGBA,
GL_UNSIGNED_BYTE,
data->getData());
0,
0,
0,
(GLsizei)width,
(GLsizei)height,
GL_RGBA,
GL_UNSIGNED_BYTE,
data->getData());
}
}
void Image::checkMipmapsCreated()
{
if (mipmapsCreated || filter.mipmap == FILTER_NONE)
return;
if (isCompressed && cdata && hasCompressedTextureSupport(cdata->getType()))
uploadCompressedMipmaps();
else if (data)
createMipmaps();
else
return;
@@ -262,7 +281,9 @@ void Image::setMipmapSharpness(float sharpness)
mipmapSharpness = std::min(std::max(sharpness, -maxMipmapSharpness + 0.01f), maxMipmapSharpness - 0.01f);
bind();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_LOD_BIAS, -mipmapSharpness); // negative bias is sharper
// negative bias is sharper
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_LOD_BIAS, -mipmapSharpness);
}
else
mipmapSharpness = 0.0f;
@@ -325,7 +346,7 @@ bool Image::loadVolatile()
if (image::CompressedData::getConstant(cdata->getType(), str))
{
throw love::Exception("Cannot create image: "
"%s compressed images are not supported on this system.", str);
"%s compressed images are not supported on this system.", str);
}
else
throw love::Exception("cannot create image: format is not supported on this system.");
@@ -362,17 +383,15 @@ bool Image::loadVolatilePOT()
if (isCompressed && cdata)
{
if (s != 1.0f || t != 1.0f)
if (s < 1.0f || t < 1.0f)
{
throw love::Exception("Cannot create image: "
"NPOT compressed images are not supported on this system.");
"compressed NPOT images are not supported on this system.");
}
GLenum format = getCompressedFormat(cdata->getType());
glCompressedTexImage2DARB(GL_TEXTURE_2D,
0,
format,
getCompressedFormat(cdata->getType()),
cdata->getWidth(0),
cdata->getHeight(0),
0,
@@ -520,7 +539,7 @@ GLenum Image::getCompressedFormat(image::CompressedData::TextureType type) const
return GL_COMPRESSED_RGBA_S3TC_DXT5_EXT;
case image::CompressedData::TYPE_BC5s:
return GL_COMPRESSED_SIGNED_RG_RGTC2;
case image::CompressedData::TYPE_BC5u:
case image::CompressedData::TYPE_BC5:
return GL_COMPRESSED_RG_RGTC2;
case image::CompressedData::TYPE_BC7:
return GL_COMPRESSED_RGBA_BPTC_UNORM_ARB;
@@ -569,8 +588,8 @@ bool Image::hasCompressedTextureSupport(image::CompressedData::TextureType type)
return GLEE_EXT_texture_compression_s3tc;
case image::CompressedData::TYPE_BC5s:
case image::CompressedData::TYPE_BC5u:
return (GLEE_VERSION_3_0 || GLEE_ARB_texture_compression_rgtc);
case image::CompressedData::TYPE_BC5:
return (GLEE_VERSION_3_0 || GLEE_ARB_texture_compression_rgtc || GLEE_EXT_texture_compression_rgtc);
case image::CompressedData::TYPE_BC7:
case image::CompressedData::TYPE_BC7srgb: