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