wined3d: Check if formats support blending when attached to an FBO.

Remove the post-pixelshader blending flag if the format doesn't. Note that the patch doesn't enforce this restriction yet, it only adjusts the reported format capabilities.

wined3d: Check if formats support blending when attached to an FBO.
670d9ad9 · Henri Verbeet · Alexandre Julliard · 6feb7c62 · 670d9ad9
Commit 670d9ad9 authored Jul 02, 2009 by Henri Verbeet Committed by Alexandre Julliard Jul 02, 2009
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utils.c dlls/wined3d/utils.c +37 -0

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--- a/dlls/wined3d/utils.c
+++ b/dlls/wined3d/utils.c
@@ -570,6 +570,7 @@ static void check_fbo_compat(const WineD3D_GL_Info *gl_info, struct GlPixelForma
    ENTER_GL();

    while(glGetError());
+    glDisable(GL_BLEND);

    glGenTextures(1, &tex);
    glBindTexture(GL_TEXTURE_2D, tex);
@@ -639,6 +640,42 @@ static void check_fbo_compat(const WineD3D_GL_Info *gl_info, struct GlPixelForma
        }
    }

+    if (status == GL_FRAMEBUFFER_COMPLETE_EXT && format_desc->Flags & WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING)
+    {
+        GLuint rb;
+
+        if (GL_SUPPORT(EXT_PACKED_DEPTH_STENCIL))
+        {
+            GL_EXTCALL(glGenRenderbuffersEXT(1, &rb));
+            GL_EXTCALL(glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, rb));
+            GL_EXTCALL(glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, GL_DEPTH24_STENCIL8_EXT, 16, 16));
+            GL_EXTCALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+                    GL_RENDERBUFFER_EXT, rb));
+            GL_EXTCALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
+                    GL_RENDERBUFFER_EXT, rb));
+            checkGLcall("RB attachment");
+        }
+
+        glEnable(GL_BLEND);
+        glClear(GL_COLOR_BUFFER_BIT);
+        if (glGetError() == GL_INVALID_FRAMEBUFFER_OPERATION_EXT)
+        {
+            while(glGetError());
+            TRACE("Format doesn't support post-pixelshader blending.\n");
+            format_desc->Flags &= ~WINED3DFMT_FLAG_POSTPIXELSHADER_BLENDING;
+        }
+
+        if (GL_SUPPORT(EXT_PACKED_DEPTH_STENCIL))
+        {
+            GL_EXTCALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT,
+                    GL_RENDERBUFFER_EXT, 0));
+            GL_EXTCALL(glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT,
+                    GL_RENDERBUFFER_EXT, 0));
+            GL_EXTCALL(glDeleteRenderbuffersEXT(1, &rb));
+            checkGLcall("RB cleanup");
+        }
+    }
+
    glDeleteTextures(1, &tex);

    LEAVE_GL();