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Move shape buffer mapping to renderer gl

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This commit is contained in:
omigamedev
2026-06-02 06:47:29 +02:00
parent 0d2a1bd0ae
commit 47eb1ec0b2
6 changed files with 131 additions and 53 deletions
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7
docs/modernization/build-inventory.md
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@@ -144,9 +144,10 @@ Known local toolchain state:
status used by `RTT::create` and framebuffer bind/restore paths, plus RTT status used by `RTT::create` and framebuffer bind/restore paths, plus RTT
clear color/depth masks and color-write-mask query tokens. `RTT` no longer clear color/depth masks and color-write-mask query tokens. `RTT` no longer
spells GL enum names directly. It also spells GL enum names directly. It also
validates Shape index-type and fill/stroke primitive-mode mapping used by the validates Shape index-type, fill/stroke primitive-mode, buffer target, static
legacy mesh draw path, plus the PanoPainter cube-face to OpenGL texture-target upload usage, and vertex attribute component/normalization mapping used by
mapping used by `TextureCube`. the legacy mesh draw path, plus the PanoPainter cube-face to OpenGL
texture-target mapping used by `TextureCube`.
It also owns and validates sampler wrap S/T/R, min/mag filter, and desktop It also owns and validates sampler wrap S/T/R, min/mag filter, and desktop
border-color parameter mapping used by legacy `Sampler`. The PanoPainter border-color parameter mapping used by legacy `Sampler`. The PanoPainter
shader attribute binding catalog used by legacy `Shader` creation also lives shader attribute binding catalog used by legacy `Shader` creation also lives

6
docs/modernization/roadmap.md
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@@ -405,8 +405,10 @@ used by `RTT::create` and framebuffer bind/restore paths, also live in
`pp_renderer_gl`. RTT clear color/depth masks and color-write-mask query tokens `pp_renderer_gl`. RTT clear color/depth masks and color-write-mask query tokens
also live in `pp_renderer_gl`. `RTT` no longer spells GL enum names directly. also live in `pp_renderer_gl`. `RTT` no longer spells GL enum names directly.
Mesh index-type and primitive-mode Mesh index-type and primitive-mode
decisions used by legacy `Shape` drawing and the PanoPainter cube-face to decisions used by legacy `Shape` drawing, plus Shape buffer targets, static
OpenGL texture-target mapping used by `TextureCube` also live in upload usage, and vertex attribute component/normalization tokens, also live
in `pp_renderer_gl`. The PanoPainter cube-face to
OpenGL texture-target mapping used by `TextureCube` also lives in
`pp_renderer_gl`. The legacy app delegates extension, upload-format, `pp_renderer_gl`. The legacy app delegates extension, upload-format,
framebuffer diagnostic, framebuffer blit, render-target setup, clear-state, framebuffer diagnostic, framebuffer blit, render-target setup, clear-state,
2D/cube texture setup, mesh draw-mode, and cube-face texture-target 2D/cube texture setup, mesh draw-mode, and cube-face texture-target

29
src/renderer_gl/opengl_capabilities.cpp
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@@ -11,9 +11,13 @@ constexpr std::uint32_t gl_unsigned_short = 0x1403U;
constexpr std::uint32_t gl_unsigned_int = 0x1405U; constexpr std::uint32_t gl_unsigned_int = 0x1405U;
constexpr std::uint32_t gl_float = 0x1406U; constexpr std::uint32_t gl_float = 0x1406U;
constexpr std::uint32_t gl_half_float = 0x140BU; constexpr std::uint32_t gl_half_float = 0x140BU;
constexpr std::uint32_t gl_false = 0U;
constexpr std::uint32_t gl_points = 0x0000U; constexpr std::uint32_t gl_points = 0x0000U;
constexpr std::uint32_t gl_lines = 0x0001U; constexpr std::uint32_t gl_lines = 0x0001U;
constexpr std::uint32_t gl_triangles = 0x0004U; constexpr std::uint32_t gl_triangles = 0x0004U;
constexpr std::uint32_t gl_array_buffer = 0x8892U;
constexpr std::uint32_t gl_element_array_buffer = 0x8893U;
constexpr std::uint32_t gl_static_draw = 0x88E4U;
constexpr std::uint32_t gl_red = 0x1903U; constexpr std::uint32_t gl_red = 0x1903U;
constexpr std::uint32_t gl_rgb = 0x1907U; constexpr std::uint32_t gl_rgb = 0x1907U;
constexpr std::uint32_t gl_rgba = 0x1908U; constexpr std::uint32_t gl_rgba = 0x1908U;
@@ -329,6 +333,31 @@ std::uint32_t primitive_mode_for_stroke_count(std::uint32_t vertex_or_index_coun
return gl_lines; return gl_lines;
} }
std::uint32_t array_buffer_target() noexcept
{
return gl_array_buffer;
}
std::uint32_t element_array_buffer_target() noexcept
{
return gl_element_array_buffer;
}
std::uint32_t static_draw_buffer_usage() noexcept
{
return gl_static_draw;
}
std::uint32_t vertex_attribute_float_component_type() noexcept
{
return gl_float;
}
std::uint32_t vertex_attribute_not_normalized() noexcept
{
return gl_false;
}
std::uint32_t texture_cube_map_target() noexcept std::uint32_t texture_cube_map_target() noexcept
{ {
return gl_texture_cube_map; return gl_texture_cube_map;

5
src/renderer_gl/opengl_capabilities.h
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@@ -75,6 +75,11 @@ struct OpenGlReadbackFormat {
[[nodiscard]] std::uint32_t index_type_for_index_size(std::uint32_t index_size_bytes) noexcept; [[nodiscard]] std::uint32_t index_type_for_index_size(std::uint32_t index_size_bytes) noexcept;
[[nodiscard]] std::uint32_t primitive_mode_for_fill_count(std::uint32_t vertex_or_index_count) noexcept; [[nodiscard]] std::uint32_t primitive_mode_for_fill_count(std::uint32_t vertex_or_index_count) noexcept;
[[nodiscard]] std::uint32_t primitive_mode_for_stroke_count(std::uint32_t vertex_or_index_count) noexcept; [[nodiscard]] std::uint32_t primitive_mode_for_stroke_count(std::uint32_t vertex_or_index_count) noexcept;
[[nodiscard]] std::uint32_t array_buffer_target() noexcept;
[[nodiscard]] std::uint32_t element_array_buffer_target() noexcept;
[[nodiscard]] std::uint32_t static_draw_buffer_usage() noexcept;
[[nodiscard]] std::uint32_t vertex_attribute_float_component_type() noexcept;
[[nodiscard]] std::uint32_t vertex_attribute_not_normalized() noexcept;
[[nodiscard]] std::uint32_t texture_cube_map_target() noexcept; [[nodiscard]] std::uint32_t texture_cube_map_target() noexcept;
[[nodiscard]] std::uint32_t cube_map_allocation_face_texture_target(std::uint32_t face_index) noexcept; [[nodiscard]] std::uint32_t cube_map_allocation_face_texture_target(std::uint32_t face_index) noexcept;
[[nodiscard]] std::span<const std::uint32_t> panopainter_cube_face_texture_targets() noexcept; [[nodiscard]] std::span<const std::uint32_t> panopainter_cube_face_texture_targets() noexcept;

130
src/shape.cpp
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@@ -6,6 +6,40 @@
#include <cstdint> #include <cstdint>
namespace {
[[nodiscard]] GLenum array_buffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::array_buffer_target());
}
[[nodiscard]] GLenum element_array_buffer_target() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::element_array_buffer_target());
}
[[nodiscard]] GLenum static_draw_buffer_usage() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::static_draw_buffer_usage());
}
[[nodiscard]] GLenum vertex_attribute_float_component_type() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::vertex_attribute_float_component_type());
}
[[nodiscard]] GLboolean vertex_attribute_not_normalized() noexcept
{
return static_cast<GLboolean>(pp::renderer::gl::vertex_attribute_not_normalized());
}
[[nodiscard]] GLenum uint16_index_type() noexcept
{
return static_cast<GLenum>(pp::renderer::gl::index_type_for_index_size(sizeof(GLushort)));
}
}
bool Shape::create_buffers(GLushort * idx, GLvoid * vertices, int isize, int vsize) bool Shape::create_buffers(GLushort * idx, GLvoid * vertices, int isize, int vsize)
{ {
index_type = static_cast<GLenum>(pp::renderer::gl::index_type_for_index_size(sizeof(GLushort))); index_type = static_cast<GLenum>(pp::renderer::gl::index_type_for_index_size(sizeof(GLushort)));
@@ -36,12 +70,12 @@ bool Shape::create_buffers_imp(GLvoid* idx, GLvoid* vertices, int isize, int vsi
return; return;
} }
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, isize, idx, GL_STATIC_DRAW); glBufferData(element_array_buffer_target(), isize, idx, static_draw_buffer_usage());
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glBufferData(GL_ARRAY_BUFFER, vsize, vertices, GL_STATIC_DRAW); glBufferData(array_buffer_target(), vsize, vertices, static_draw_buffer_usage());
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindBuffer(element_array_buffer_target(), 0);
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
#if USE_VBO #if USE_VBO
glGenVertexArrays(2, arrays); glGenVertexArrays(2, arrays);
@@ -57,12 +91,12 @@ bool Shape::create_buffers_imp(GLvoid* idx, GLvoid* vertices, int isize, int vsi
glEnableVertexAttribArray(1); glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2); glEnableVertexAttribArray(2);
glEnableVertexAttribArray(3); glEnableVertexAttribArray(3);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)0); glVertexAttribPointer(0, 4, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs)); glVertexAttribPointer(1, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs));
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs2)); glVertexAttribPointer(2, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs2));
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, nor)); glVertexAttribPointer(3, 3, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, nor));
} }
glBindVertexArray(0); glBindVertexArray(0);
#endif #endif
@@ -87,10 +121,10 @@ bool Shape::create_buffers(GLvoid* vertices, int vsize)
if (vsize) if (vsize)
{ {
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glBufferData(GL_ARRAY_BUFFER, vsize, vertices, GL_STATIC_DRAW); glBufferData(array_buffer_target(), vsize, vertices, static_draw_buffer_usage());
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindBuffer(element_array_buffer_target(), 0);
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
} }
#if USE_VBO #if USE_VBO
@@ -107,11 +141,11 @@ bool Shape::create_buffers(GLvoid* vertices, int vsize)
glEnableVertexAttribArray(1); glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2); glEnableVertexAttribArray(2);
glEnableVertexAttribArray(3); glEnableVertexAttribArray(3);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)0); glVertexAttribPointer(0, 4, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs)); glVertexAttribPointer(1, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs));
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs2)); glVertexAttribPointer(2, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs2));
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, nor)); glVertexAttribPointer(3, 3, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, nor));
} }
glBindVertexArray(0); glBindVertexArray(0);
#endif #endif
@@ -135,20 +169,20 @@ void Shape::draw_fill() const
#else #else
glEnableVertexAttribArray(0); glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1); glEnableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)0); glVertexAttribPointer(0, 4, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs)); glVertexAttribPointer(1, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs));
if (use_idx) if (use_idx)
{ {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glDrawElements(type, count[0], GL_UNSIGNED_SHORT, ioff[0]); glDrawElements(type, count[0], uint16_index_type(), ioff[0]);
} }
else else
glDrawArrays(type, 0, count[0]); glDrawArrays(type, 0, count[0]);
glDisableVertexAttribArray(0); glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1); glDisableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindBuffer(element_array_buffer_target(), 0);
#endif // USE_VBO #endif // USE_VBO
}); });
} }
@@ -169,21 +203,21 @@ void Shape::draw_stroke() const
#else #else
glEnableVertexAttribArray(0); glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1); glEnableVertexAttribArray(1);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)0); glVertexAttribPointer(0, 4, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)0);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs)); glVertexAttribPointer(1, 2, vertex_attribute_float_component_type(), vertex_attribute_not_normalized(), sizeof(vertex_t), (GLvoid*)offsetof(vertex_t, uvs));
if (use_idx) if (use_idx)
{ {
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glDrawElements(type, count[1], GL_UNSIGNED_SHORT, ioff[1]); glDrawElements(type, count[1], uint16_index_type(), ioff[1]);
} }
else else
glDrawArrays(type, 0, count[1]); glDrawArrays(type, 0, count[1]);
glDisableVertexAttribArray(0); glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1); glDisableVertexAttribArray(1);
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindBuffer(element_array_buffer_target(), 0);
#endif // USE_VBO #endif // USE_VBO
}); });
} }
@@ -489,8 +523,8 @@ void Plane::update_vertices(const glm::vec4* data, const glm::vec2* uvs, const g
App::I->render_task([this] App::I->render_task([this]
{ {
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); glBufferData(array_buffer_target(), sizeof(vertices), vertices, static_draw_buffer_usage());
static GLushort idx[6 + 8]{ static GLushort idx[6 + 8]{
0, 1, 2, 0, 1, 2,
0, 2, 3, 0, 2, 3,
@@ -499,11 +533,11 @@ void Plane::update_vertices(const glm::vec4* data, const glm::vec2* uvs, const g
2, 3, 2, 3,
3, 0, 3, 0,
}; };
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffers[1]); glBindBuffer(element_array_buffer_target(), buffers[1]);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(idx), idx, GL_STATIC_DRAW); glBufferData(element_array_buffer_target(), sizeof(idx), idx, static_draw_buffer_usage());
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0); glBindBuffer(element_array_buffer_target(), 0);
}); });
} }
void Circle::create_impl(float radius, int div, GLushort* idx, vertex_t* vertices) void Circle::create_impl(float radius, int div, GLushort* idx, vertex_t* vertices)
@@ -762,9 +796,9 @@ void LineSegment::update_vertices(const glm::vec4 data[2])
static vertex_t vertices[2]; static vertex_t vertices[2];
vertices[0] = { data[0], { 0, 0 } }; // A vertices[0] = { data[0], { 0, 0 } }; // A
vertices[1] = { data[1], { 0, 1 } }; // B vertices[1] = { data[1], { 0, 1 } }; // B
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); glBufferData(array_buffer_target(), sizeof(vertices), vertices, static_draw_buffer_usage());
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
}); });
} }
void DynamicShape::update_vertices(vertex_t* vertices, int vcount) void DynamicShape::update_vertices(vertex_t* vertices, int vcount)
@@ -773,8 +807,8 @@ void DynamicShape::update_vertices(vertex_t* vertices, int vcount)
{ {
count[0] = vcount; count[0] = vcount;
count[1] = vcount; count[1] = vcount;
glBindBuffer(GL_ARRAY_BUFFER, buffers[0]); glBindBuffer(array_buffer_target(), buffers[0]);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_t) * vcount, vertices, GL_STATIC_DRAW); glBufferData(array_buffer_target(), sizeof(vertex_t) * vcount, vertices, static_draw_buffer_usage());
glBindBuffer(GL_ARRAY_BUFFER, 0); glBindBuffer(array_buffer_target(), 0);
}); });
} }

7
tests/renderer_gl/capabilities_tests.cpp
View File

@@ -192,6 +192,7 @@ void maps_shape_index_and_primitive_modes(pp::tests::Harness& h)
constexpr std::uint32_t gl_triangles = 0x0004U; constexpr std::uint32_t gl_triangles = 0x0004U;
constexpr std::uint32_t gl_unsigned_short = 0x1403U; constexpr std::uint32_t gl_unsigned_short = 0x1403U;
constexpr std::uint32_t gl_unsigned_int = 0x1405U; constexpr std::uint32_t gl_unsigned_int = 0x1405U;
constexpr std::uint32_t gl_float = 0x1406U;
PP_EXPECT(h, pp::renderer::gl::index_type_for_index_size(2U) == gl_unsigned_short); PP_EXPECT(h, pp::renderer::gl::index_type_for_index_size(2U) == gl_unsigned_short);
PP_EXPECT(h, pp::renderer::gl::index_type_for_index_size(4U) == gl_unsigned_int); PP_EXPECT(h, pp::renderer::gl::index_type_for_index_size(4U) == gl_unsigned_int);
@@ -206,6 +207,12 @@ void maps_shape_index_and_primitive_modes(pp::tests::Harness& h)
PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(1U) == gl_points); PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(1U) == gl_points);
PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(2U) == gl_lines); PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(2U) == gl_lines);
PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(99U) == gl_lines); PP_EXPECT(h, pp::renderer::gl::primitive_mode_for_stroke_count(99U) == gl_lines);
PP_EXPECT(h, pp::renderer::gl::array_buffer_target() == 0x8892U);
PP_EXPECT(h, pp::renderer::gl::element_array_buffer_target() == 0x8893U);
PP_EXPECT(h, pp::renderer::gl::static_draw_buffer_usage() == 0x88E4U);
PP_EXPECT(h, pp::renderer::gl::vertex_attribute_float_component_type() == gl_float);
PP_EXPECT(h, pp::renderer::gl::vertex_attribute_not_normalized() == 0U);
} }
void maps_panopainter_cube_faces_to_texture_targets(pp::tests::Harness& h) void maps_panopainter_cube_faces_to_texture_targets(pp::tests::Harness& h)