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Renderer: Improve texture view support (and support emulation for OGL)

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This commit is contained in:
SirLynix
2022-12-02 22:58:34 +01:00
committed by Jérôme Leclercq
parent 08ea4c87a7
commit 56acbb2694
9 changed files with 99 additions and 24 deletions
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41
src/Nazara/OpenGLRenderer/Wrapper/Context.cpp
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@@ -294,28 +294,39 @@ namespace Nz::GL
if (texture.RequiresTextureViewEmulation())
{
const TextureViewInfo& texViewInfo = texture.GetTextureViewInfo();
if (texViewInfo.viewType != ImageType::E2D)
throw std::runtime_error("unrestricted texture views can only be used as 2D texture attachment");
GLenum texTarget;
if (texture.GetType() == ImageType::Cubemap)
const OpenGLTexture& parentTexture = *texture.GetParentTexture();
switch (parentTexture.GetType())
{
constexpr std::array<GLenum, 6> faceTargets = { GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z };
assert(texViewInfo.baseArrayLayer < faceTargets.size());
texTarget = faceTargets[texViewInfo.baseArrayLayer];
case ImageType::Cubemap:
{
constexpr std::array<GLenum, 6> faceTargets = { GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z };
assert(texViewInfo.baseArrayLayer < faceTargets.size());
GLenum texTarget = faceTargets[texViewInfo.baseArrayLayer];
framebuffer.Texture2D(GL_COLOR_ATTACHMENT0, texTarget, parentTexture.GetTexture().GetObjectId(), texViewInfo.baseMipLevel);
break;
}
case ImageType::E1D:
case ImageType::E2D:
framebuffer.Texture2D(GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, parentTexture.GetTexture().GetObjectId(), texViewInfo.baseMipLevel);
break;
case ImageType::E1D_Array:
case ImageType::E2D_Array:
case ImageType::E3D:
framebuffer.TextureLayer(GL_COLOR_ATTACHMENT0, parentTexture.GetTexture().GetObjectId(), texViewInfo.baseArrayLayer, texViewInfo.baseMipLevel);
break;
}
else if (texture.GetType() == ImageType::E2D)
texTarget = GL_TEXTURE_2D;
else
throw std::runtime_error("unrestricted texture views are not supported on this device, blit is only permitted from/to a cubemap face or a 2D texture");
//TODO: Support texture arrays (one slice at a time)
framebuffer.Texture2D(GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.GetParentTexture()->GetTexture().GetObjectId(), texture.GetTextureViewInfo().baseMipLevel);
}
else
{
if (texture.GetTexture().GetTarget() != TextureTarget::Target2D)
throw std::runtime_error("blit is not yet supported from other texture type than 2D textures");
throw std::runtime_error("blit is not yet supported from/to other texture type than 2D textures");
framebuffer.Texture2D(GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, texture.GetTexture().GetObjectId(), 0);
}