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wined3d: Introduce a helper function for translating blend operations.

This commit is contained in:
Henri Verbeet 2011-04-03 23:35:33 +02:00 committed by Alexandre Julliard
parent 6aa02f11ea
commit ae58e47ca0
1 changed files with 23 additions and 24 deletions
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47
dlls/wined3d/state.c
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@ -8,7 +8,7 @@
* Copyright 2005 Oliver Stieber
* Copyright 2006 Henri Verbeet
* Copyright 2006-2008 Stefan Dösinger for CodeWeavers
* Copyright 2009-2010 Henri Verbeet for CodeWeavers
* Copyright 2009-2011 Henri Verbeet for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@ -634,6 +634,26 @@ static void state_blendop_w(DWORD state, struct wined3d_stateblock *stateblock,
WARN("Unsupported in local OpenGL implementation: glBlendEquation\n");
}
static GLenum gl_blend_op(WINED3DBLENDOP op)
{
switch (op)
{
case WINED3DBLENDOP_ADD:
return GL_FUNC_ADD_EXT;
case WINED3DBLENDOP_SUBTRACT:
return GL_FUNC_SUBTRACT_EXT;
case WINED3DBLENDOP_REVSUBTRACT:
return GL_FUNC_REVERSE_SUBTRACT_EXT;
case WINED3DBLENDOP_MIN:
return GL_MIN_EXT;
case WINED3DBLENDOP_MAX:
return GL_MAX_EXT;
default:
FIXME("Unhandled blend op %#x.\n", op);
return GL_NONE;
}
}
static void state_blendop(DWORD state, struct wined3d_stateblock *stateblock, struct wined3d_context *context)
{
const struct wined3d_gl_info *gl_info = context->gl_info;
@ -648,29 +668,8 @@ static void state_blendop(DWORD state, struct wined3d_stateblock *stateblock, st
return;
}
switch (stateblock->state.render_states[WINED3DRS_BLENDOP])
{
case WINED3DBLENDOP_ADD: blendEquation = GL_FUNC_ADD_EXT; break;
case WINED3DBLENDOP_SUBTRACT: blendEquation = GL_FUNC_SUBTRACT_EXT; break;
case WINED3DBLENDOP_REVSUBTRACT: blendEquation = GL_FUNC_REVERSE_SUBTRACT_EXT; break;
case WINED3DBLENDOP_MIN: blendEquation = GL_MIN_EXT; break;
case WINED3DBLENDOP_MAX: blendEquation = GL_MAX_EXT; break;
default:
FIXME("Unrecognized/Unhandled D3DBLENDOP value %#x.\n",
stateblock->state.render_states[WINED3DRS_BLENDOP]);
}
switch (stateblock->state.render_states[WINED3DRS_BLENDOPALPHA])
{
case WINED3DBLENDOP_ADD: blendEquationAlpha = GL_FUNC_ADD_EXT; break;
case WINED3DBLENDOP_SUBTRACT: blendEquationAlpha = GL_FUNC_SUBTRACT_EXT; break;
case WINED3DBLENDOP_REVSUBTRACT: blendEquationAlpha = GL_FUNC_REVERSE_SUBTRACT_EXT; break;
case WINED3DBLENDOP_MIN: blendEquationAlpha = GL_MIN_EXT; break;
case WINED3DBLENDOP_MAX: blendEquationAlpha = GL_MAX_EXT; break;
default:
FIXME("Unrecognized/Unhandled D3DBLENDOP value %#x\n",
stateblock->state.render_states[WINED3DRS_BLENDOPALPHA]);
}
blendEquation = gl_blend_op(stateblock->state.render_states[WINED3DRS_BLENDOP]);
blendEquationAlpha = gl_blend_op(stateblock->state.render_states[WINED3DRS_BLENDOPALPHA]);
if (stateblock->state.render_states[WINED3DRS_SEPARATEALPHABLENDENABLE])
{