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Add support for modes with a depth-buffer but no stencil-buffer. This

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eliminates various "3D driver claims to not support visual" messages in
16-bit color mode.
This commit is contained in:
Ian Romanick 2005-05-20 18:40:11 +00:00
parent 3cc2f82bb5
commit b70a47736a
1 changed files with 7 additions and 5 deletions
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12
src/mesa/drivers/dri/i915/intel_screen.c
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@ -405,28 +405,30 @@ intelFillInModes( unsigned pixel_bits, unsigned depth_bits,
GLenum fb_format;
GLenum fb_type;
/* GLX_SWAP_COPY_OML is only supported because the MGA driver doesn't
/* GLX_SWAP_COPY_OML is only supported because the Intel driver doesn't
* support pageflipping at all.
*/
static const GLenum back_buffer_modes[] = {
GLX_NONE, GLX_SWAP_UNDEFINED_OML, GLX_SWAP_COPY_OML
};
u_int8_t depth_bits_array[2];
u_int8_t stencil_bits_array[2];
u_int8_t depth_bits_array[3];
u_int8_t stencil_bits_array[3];
depth_bits_array[0] = 0;
depth_bits_array[1] = depth_bits;
depth_bits_array[2] = depth_bits;
/* Just like with the accumulation buffer, always provide some modes
* with a stencil buffer. It will be a sw fallback, but some apps won't
* care about that.
*/
stencil_bits_array[0] = 0;
stencil_bits_array[1] = (stencil_bits == 0) ? 8 : stencil_bits;
stencil_bits_array[1] = 0;
stencil_bits_array[2] = (stencil_bits == 0) ? 8 : stencil_bits;
depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 2 : 1;
depth_buffer_factor = ((depth_bits != 0) || (stencil_bits != 0)) ? 3 : 1;
back_buffer_factor = (have_back_buffer) ? 3 : 1;
num_modes = depth_buffer_factor * back_buffer_factor * 4;