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#include <mbgl/gl/texture.hpp>
#include <mbgl/gl/context.hpp>
#include <mbgl/gl/texture_resource.hpp>
#include <mbgl/gl/defines.hpp>
namespace mbgl {
namespace gl {
using namespace platform;
void bindTexture(gl::Context& context, const uint8_t unit, const gfx::TextureBinding& binding) {
auto& resource = static_cast<gl::TextureResource&>(*binding.resource);
if (binding.filter != resource.filter || binding.mipmap != resource.mipmap ||
binding.wrapX != resource.wrapX || binding.wrapY != resource.wrapY) {
context.activeTextureUnit = unit;
context.texture[unit] = resource.texture;
if (binding.filter != resource.filter || binding.mipmap != resource.mipmap) {
MBGL_CHECK_ERROR(glTexParameteri(
GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,
binding.filter == gfx::TextureFilterType::Linear
? (binding.mipmap == gfx::TextureMipMapType::Yes ? GL_LINEAR_MIPMAP_NEAREST
: GL_LINEAR)
: (binding.mipmap == gfx::TextureMipMapType::Yes ? GL_NEAREST_MIPMAP_NEAREST
: GL_NEAREST)));
MBGL_CHECK_ERROR(glTexParameteri(
GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER,
binding.filter == gfx::TextureFilterType::Linear ? GL_LINEAR : GL_NEAREST));
resource.filter = binding.filter;
resource.mipmap = binding.mipmap;
}
if (binding.wrapX != resource.wrapX) {
MBGL_CHECK_ERROR(glTexParameteri(
GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
binding.wrapX == gfx::TextureWrapType::Clamp ? GL_CLAMP_TO_EDGE : GL_REPEAT));
resource.wrapX = binding.wrapX;
}
if (binding.wrapY != resource.wrapY) {
MBGL_CHECK_ERROR(glTexParameteri(
GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
binding.wrapY == gfx::TextureWrapType::Clamp ? GL_CLAMP_TO_EDGE : GL_REPEAT));
resource.wrapY = binding.wrapY;
}
} else if (context.texture[unit] != resource.texture) {
// We are checking first to avoid setting the active texture without a subsequent
// texture bind.
context.activeTextureUnit = unit;
context.texture[unit] = resource.texture;
}
}
} // namespace gl
} // namespace mbgl
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