Move pixel buffer mapping to renderer gl

src/renderer_gl/opengl_capabilities.cpp

@@ -48,6 +48,10 @@ constexpr std::uint32_t gl_texture_wrap_t = 0x2803U;
 constexpr std::uint32_t gl_texture_wrap_r = 0x8072U;
 constexpr std::uint32_t gl_texture_border_color = 0x1004U;
 constexpr std::uint32_t gl_clamp_to_edge = 0x812FU;
+constexpr std::uint32_t gl_pixel_pack_buffer = 0x88EBU;
+constexpr std::uint32_t gl_pixel_unpack_buffer = 0x88ECU;
+constexpr std::uint32_t gl_stream_read = 0x88E1U;
+constexpr std::uint32_t gl_map_read_bit = 0x0001U;
 
 [[nodiscard]] bool contains(std::string_view text, std::string_view needle) noexcept
 {
@@ -149,6 +153,26 @@ std::uint64_t readback_byte_count(
     return static_cast<std::uint64_t>(width) * height * format.bytes_per_pixel;
 }
 
+std::uint32_t pixel_pack_buffer_target() noexcept
+{
+    return gl_pixel_pack_buffer;
+}
+
+std::uint32_t pixel_unpack_buffer_target() noexcept
+{
+    return gl_pixel_unpack_buffer;
+}
+
+std::uint32_t pixel_buffer_stream_read_usage() noexcept
+{
+    return gl_stream_read;
+}
+
+std::uint32_t pixel_buffer_map_read_access() noexcept
+{
+    return gl_map_read_bit;
+}
+
 const char* framebuffer_status_name(std::uint32_t status) noexcept
 {
     switch (status) {

src/renderer_gl/opengl_capabilities.h

@@ -50,6 +50,10 @@ struct OpenGlReadbackFormat {
     OpenGlReadbackFormat format,
     std::uint32_t width,
     std::uint32_t height) noexcept;
+[[nodiscard]] std::uint32_t pixel_pack_buffer_target() noexcept;
+[[nodiscard]] std::uint32_t pixel_unpack_buffer_target() noexcept;
+[[nodiscard]] std::uint32_t pixel_buffer_stream_read_usage() noexcept;
+[[nodiscard]] std::uint32_t pixel_buffer_map_read_access() noexcept;
 [[nodiscard]] const char* framebuffer_status_name(std::uint32_t status) noexcept;
 [[nodiscard]] std::uint32_t framebuffer_color_buffer_mask() noexcept;
 [[nodiscard]] std::uint32_t framebuffer_blit_filter(bool linear) noexcept;