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Fix GL version check for arbitrary texture-to-buffer copy support.

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love never creates a GL4.5 context, so we also need to check for the extension that provides the same functionality.
This commit is contained in:
Alex Szpakowski
2021-12-30 19:25:10 -04:00
parent 4474312f76
commit 813c9d1781
2 changed files with 2 additions and 2 deletions
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src/modules/graphics/opengl/OpenGL.cpp
+1 -1
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@@ -1541,7 +1541,7 @@ bool OpenGL::isCopyBufferToTextureSupported() const
bool OpenGL::isCopyTextureToBufferSupported() const bool OpenGL::isCopyTextureToBufferSupported() const
{ {
// Requires glGetTextureSubImage support. // Requires glGetTextureSubImage support.
return GLAD_VERSION_4_5; return GLAD_VERSION_4_5 || GLAD_ARB_get_texture_sub_image;
} }
bool OpenGL::isCopyRenderTargetToBufferSupported() const bool OpenGL::isCopyRenderTargetToBufferSupported() const
src/modules/graphics/opengl/Texture.cpp
+1 -1
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@@ -563,7 +563,7 @@ void Texture::copyToBuffer(love::graphics::Buffer *dest, int slice, int mipmap,
// treating the pointer as a byte offset. // treating the pointer as a byte offset.
uint8 *byteoffset = (uint8 *)(ptrdiff_t)destoffset; uint8 *byteoffset = (uint8 *)(ptrdiff_t)destoffset;
if (GLAD_VERSION_4_5) if (gl.isCopyTextureToBufferSupported())
{ {
if (isCompressed()) if (isCompressed())
glGetCompressedTextureSubImage(texture, mipmap, rect.x, rect.y, slice, rect.w, rect.h, 1, size, byteoffset); glGetCompressedTextureSubImage(texture, mipmap, rect.x, rect.y, slice, rect.w, rect.h, 1, size, byteoffset);