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Fetch enough fixed function GL entry points to render legacy overlay

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baldurk
2019-05-02 14:29:39 +01:00
parent 005a1964ee
commit 32b93600b3
1 changed files with 37 additions and 1 deletions
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renderdoc/driver/gl/cgl_platform.cpp
+37 -1
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@@ -38,6 +38,35 @@ extern "C" void NSGL_update(void *nsctx);
extern "C" void NSGL_flushBuffer(void *nsctx);
extern "C" void NSGL_destroyContext(void *nsctx);
// gl functions (used for quad rendering on legacy contexts)
extern "C" void glPushMatrix();
extern "C" void glLoadIdentity();
extern "C" void glMatrixMode(GLenum);
extern "C" void glOrtho(GLdouble, GLdouble, GLdouble, GLdouble, GLdouble, GLdouble);
extern "C" void glPopMatrix();
extern "C" void glBegin(GLenum);
extern "C" void glVertex2f(float, float);
extern "C" void glTexCoord2f(float, float);
extern "C" void glEnd();
#define QUAD_GL_FUNCS(FUNC) \
FUNC(glGetIntegerv); \
FUNC(glPushMatrix); \
FUNC(glLoadIdentity); \
FUNC(glMatrixMode); \
FUNC(glOrtho); \
FUNC(glPopMatrix); \
FUNC(glBegin); \
FUNC(glVertex2f); \
FUNC(glTexCoord2f); \
FUNC(glEnd);
#define DECL_PTR(a) decltype(&a) a;
struct QuadGL
{
QUAD_GL_FUNCS(DECL_PTR);
};
template <>
std::string DoStringise(const CGLError &el)
{
@@ -194,7 +223,14 @@ class CGLPlatform : public GLPlatform
void DrawQuads(float width, float height, const std::vector<Vec4f> &vertices)
{
RDCERR("Legacy overlay not supported on macOS");
static QuadGL quadGL = {};
if(!quadGL.glBegin)
{
#define FETCH_PTR(a) quadGL.a = &::a;
QUAD_GL_FUNCS(FETCH_PTR)
}
::DrawQuads(quadGL, width, height, vertices);
}
} cglPlatform;