diff options
Diffstat (limited to 'src/mbgl/gl/value.cpp')
| -rw-r--r-- | src/mbgl/gl/value.cpp | 75 |
1 files changed, 70 insertions, 5 deletions
diff --git a/src/mbgl/gl/value.cpp b/src/mbgl/gl/value.cpp index d685e533a5..b926f599ee 100644 --- a/src/mbgl/gl/value.cpp +++ b/src/mbgl/gl/value.cpp @@ -8,6 +8,9 @@ namespace value { using namespace platform; +template <class T> +T fromGLenum(const GLint); + const constexpr ClearDepth::Type ClearDepth::Default; void ClearDepth::Set(const Type& value) { @@ -174,29 +177,91 @@ Blend::Type Blend::Get() { const constexpr BlendEquation::Type BlendEquation::Default; +GLenum toGLenum(const gfx::ColorMode::BlendEquation blendEquation) { + switch (blendEquation) { + case gfx::ColorMode::BlendEquation::Add: return GL_FUNC_ADD; + case gfx::ColorMode::BlendEquation::Subtract: return GL_FUNC_SUBTRACT; + case gfx::ColorMode::BlendEquation::ReverseSubtract: return GL_FUNC_REVERSE_SUBTRACT; + } + return GL_INVALID_ENUM; +} + void BlendEquation::Set(const Type& value) { - MBGL_CHECK_ERROR(glBlendEquation(static_cast<GLenum>(value))); + MBGL_CHECK_ERROR(glBlendEquation(toGLenum(value))); +} + +template <> +gfx::ColorMode::BlendEquation fromGLenum<gfx::ColorMode::BlendEquation>(const GLint blendEquation) { + switch (blendEquation) { + case GL_FUNC_ADD: return gfx::ColorMode::BlendEquation::Add; + case GL_FUNC_SUBTRACT: return gfx::ColorMode::BlendEquation::Subtract; + case GL_FUNC_REVERSE_SUBTRACT: return gfx::ColorMode::BlendEquation::ReverseSubtract; + } + return {}; } BlendEquation::Type BlendEquation::Get() { GLint blend; MBGL_CHECK_ERROR(glGetIntegerv(GL_BLEND_EQUATION_RGB, &blend)); - return static_cast<Type>(blend); + return fromGLenum<gfx::ColorMode::BlendEquation>(blend); } const constexpr BlendFunc::Type BlendFunc::Default; +GLenum toGLenum(const gfx::ColorMode::BlendFactor blendFactor) { + switch (blendFactor) { + case gfx::ColorMode::BlendFactor::Zero: return GL_ZERO; + case gfx::ColorMode::BlendFactor::One: return GL_ONE; + case gfx::ColorMode::BlendFactor::SrcColor: return GL_SRC_COLOR; + case gfx::ColorMode::BlendFactor::OneMinusSrcColor: return GL_ONE_MINUS_SRC_COLOR; + case gfx::ColorMode::BlendFactor::DstColor: return GL_DST_COLOR; + case gfx::ColorMode::BlendFactor::OneMinusDstColor: return GL_ONE_MINUS_DST_COLOR; + case gfx::ColorMode::BlendFactor::SrcAlpha: return GL_SRC_ALPHA; + case gfx::ColorMode::BlendFactor::OneMinusSrcAlpha: return GL_ONE_MINUS_SRC_ALPHA; + case gfx::ColorMode::BlendFactor::DstAlpha: return GL_DST_ALPHA; + case gfx::ColorMode::BlendFactor::OneMinusDstAlpha: return GL_ONE_MINUS_DST_ALPHA; + case gfx::ColorMode::BlendFactor::ConstantColor: return GL_CONSTANT_COLOR; + case gfx::ColorMode::BlendFactor::OneMinusConstantColor: return GL_ONE_MINUS_CONSTANT_COLOR; + case gfx::ColorMode::BlendFactor::ConstantAlpha: return GL_CONSTANT_ALPHA; + case gfx::ColorMode::BlendFactor::OneMinusConstantAlpha: return GL_ONE_MINUS_CONSTANT_ALPHA; + case gfx::ColorMode::BlendFactor::SrcAlphaSaturate: return GL_SRC_ALPHA_SATURATE; + } + return GL_INVALID_ENUM; +} + void BlendFunc::Set(const Type& value) { MBGL_CHECK_ERROR( - glBlendFunc(static_cast<GLenum>(value.sfactor), static_cast<GLenum>(value.dfactor))); + glBlendFunc(toGLenum(value.sfactor), toGLenum(value.dfactor))); +} + +template <> +gfx::ColorMode::BlendFactor fromGLenum<gfx::ColorMode::BlendFactor>(const GLint blendFactor) { + switch (blendFactor) { + case GL_ZERO: return gfx::ColorMode::BlendFactor::Zero; + case GL_ONE: return gfx::ColorMode::BlendFactor::One; + case GL_SRC_COLOR: return gfx::ColorMode::BlendFactor::SrcColor; + case GL_ONE_MINUS_SRC_COLOR: return gfx::ColorMode::BlendFactor::OneMinusSrcColor; + case GL_DST_COLOR: return gfx::ColorMode::BlendFactor::DstColor; + case GL_ONE_MINUS_DST_COLOR: return gfx::ColorMode::BlendFactor::OneMinusDstColor; + case GL_SRC_ALPHA: return gfx::ColorMode::BlendFactor::SrcAlpha; + case GL_ONE_MINUS_SRC_ALPHA: return gfx::ColorMode::BlendFactor::OneMinusSrcAlpha; + case GL_DST_ALPHA: return gfx::ColorMode::BlendFactor::DstAlpha; + case GL_ONE_MINUS_DST_ALPHA: return gfx::ColorMode::BlendFactor::OneMinusDstAlpha; + case GL_CONSTANT_COLOR: return gfx::ColorMode::BlendFactor::ConstantColor; + case GL_ONE_MINUS_CONSTANT_COLOR: return gfx::ColorMode::BlendFactor::OneMinusConstantColor; + case GL_CONSTANT_ALPHA: return gfx::ColorMode::BlendFactor::ConstantAlpha; + case GL_ONE_MINUS_CONSTANT_ALPHA: return gfx::ColorMode::BlendFactor::OneMinusConstantAlpha; + case GL_SRC_ALPHA_SATURATE: return gfx::ColorMode::BlendFactor::SrcAlphaSaturate; + } + return {}; } BlendFunc::Type BlendFunc::Get() { GLint sfactor, dfactor; MBGL_CHECK_ERROR(glGetIntegerv(GL_BLEND_SRC_ALPHA, &sfactor)); MBGL_CHECK_ERROR(glGetIntegerv(GL_BLEND_DST_ALPHA, &dfactor)); - return { static_cast<ColorMode::BlendFactor>(sfactor), - static_cast<ColorMode::BlendFactor>(dfactor) }; + return { fromGLenum<gfx::ColorMode::BlendFactor>(sfactor), + fromGLenum<gfx::ColorMode::BlendFactor>(dfactor) }; } const BlendColor::Type BlendColor::Default { 0, 0, 0, 0 }; |