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Direct mode vs immediate mode - immediate is the correct name
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edit approved Jan 26, 2015 at 10:14
the6p4c
edit approved Jan 26, 2015 at 10:14
the6p4c
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The primary difference is how up-to-date the strategies are. The direct-modeimmediate mode used in the first tutorial:

glBegin(GL_QUADS);
    glColor3f(1, 0, 0); glVertex3f(0, 0, 0);
    glColor3f(1, 1, 0); glVertex3f(100, 0, 0);
    glColor3f(1, 0, 1); glVertex3f(100, 100, 0);
    glColor3f(1, 1, 1); glVertex3f(0, 100, 0);
glEnd();

Is outdated and not supported on newer versions.

Using vertex buffers and shaders is the current method of rendering with OpenGL. It may seem more complicated, but it performs considerably better. Additionally, once you have your supporting code wrapping up the OpenGL stuff, the differences are abstracted away for the most part.

The primary difference is how up-to-date the strategies are. The direct-mode used in the first tutorial:

glBegin(GL_QUADS);
    glColor3f(1, 0, 0); glVertex3f(0, 0, 0);
    glColor3f(1, 1, 0); glVertex3f(100, 0, 0);
    glColor3f(1, 0, 1); glVertex3f(100, 100, 0);
    glColor3f(1, 1, 1); glVertex3f(0, 100, 0);
glEnd();

Is outdated and not supported on newer versions.

Using vertex buffers and shaders is the current method of rendering with OpenGL. It may seem more complicated, but it performs considerably better. Additionally, once you have your supporting code wrapping up the OpenGL stuff, the differences are abstracted away for the most part.

The primary difference is how up-to-date the strategies are. The immediate mode used in the first tutorial:

glBegin(GL_QUADS);
    glColor3f(1, 0, 0); glVertex3f(0, 0, 0);
    glColor3f(1, 1, 0); glVertex3f(100, 0, 0);
    glColor3f(1, 0, 1); glVertex3f(100, 100, 0);
    glColor3f(1, 1, 1); glVertex3f(0, 100, 0);
glEnd();

Is outdated and not supported on newer versions.

Using vertex buffers and shaders is the current method of rendering with OpenGL. It may seem more complicated, but it performs considerably better. Additionally, once you have your supporting code wrapping up the OpenGL stuff, the differences are abstracted away for the most part.

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House
House
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The primary difference is how up-to-date the strategies are. The direct-mode used in the first tutorial:

glBegin(GL_QUADS);
    glColor3f(1, 0, 0); glVertex3f(0, 0, 0);
    glColor3f(1, 1, 0); glVertex3f(100, 0, 0);
    glColor3f(1, 0, 1); glVertex3f(100, 100, 0);
    glColor3f(1, 1, 1); glVertex3f(0, 100, 0);
glEnd();

Is outdated and not supported on newer versions.

Using vertex buffers and shaders is the current method of rendering with OpenGL. It may seem more complicated, but it performs considerably better. Additionally, once you have your supporting code wrapping up the OpenGL stuff, the differences are abstracted away for the most part.