/**
* Update texture-related derived state.
*/
void
_mesa_update_texture( struct gl_context *ctx, GLuint new_state )
{
if (new_state & _NEW_TEXTURE_MATRIX)
update_texture_matrices( ctx );
if (new_state & (_NEW_TEXTURE | _NEW_PROGRAM))
update_texture_state( ctx );
}
/*
* If ctx->NewState is non-zero then this function MUST be called before
* rendering any primitive. Basically, function pointers and miscellaneous
* flags are updated to reflect the current state of the state machine.
*
* The above constraint is now maintained largely by the two Exec
* dispatch tables, which trigger the appropriate flush on transition
* between State and Geometry modes.
*
* Special care is taken with the derived value _NeedEyeCoords. This
* is a bitflag which is updated with information from a number of
* attribute groups (MODELVIEW, LIGHT, TEXTURE). A lot of derived
* state references this value, and must be treated with care to
* ensure that updates are done correctly. All state dependent on
* _NeedEyeCoords is calculated from within _mesa_update_tnl_spaces(),
* and from nowhere else.
*/
void _mesa_update_state( GLcontext *ctx )
{
const GLuint new_state = ctx->NewState;
const GLuint oldneedeyecoords = ctx->_NeedEyeCoords;
if (MESA_VERBOSE & VERBOSE_STATE)
_mesa_print_state("_mesa_update_state", new_state);
if (new_state & _NEW_MODELVIEW)
_math_matrix_analyse( &ctx->ModelView );
if (new_state & _NEW_PROJECTION)
update_projection( ctx );
if (new_state & _NEW_TEXTURE_MATRIX)
update_texture_matrices( ctx );
if (new_state & _NEW_COLOR_MATRIX)
_math_matrix_analyse( &ctx->ColorMatrix );
/* References ColorMatrix.type (derived above).
*/
if (new_state & _IMAGE_NEW_TRANSFER_STATE)
update_image_transfer_state(ctx);
/* Contributes to NeedEyeCoords, NeedNormals.
*/
if (new_state & _NEW_TEXTURE)
update_texture_state( ctx );
if (new_state & (_NEW_BUFFERS|_NEW_SCISSOR))
update_drawbuffer( ctx );
if (new_state & _NEW_POLYGON)
update_polygon( ctx );
/* Contributes to NeedEyeCoords, NeedNormals.
*/
if (new_state & _NEW_LIGHT)
_mesa_update_lighting( ctx );
/* We can light in object space if the modelview matrix preserves
* lengths and relative angles.
*/
if (new_state & (_NEW_MODELVIEW|_NEW_LIGHT)) {
ctx->_NeedEyeCoords &= ~NEED_EYE_LIGHT_MODELVIEW;
if (ctx->Light.Enabled &&
!TEST_MAT_FLAGS( &ctx->ModelView, MAT_FLAGS_LENGTH_PRESERVING))
ctx->_NeedEyeCoords |= NEED_EYE_LIGHT_MODELVIEW;
}
/* Keep ModelviewProject uptodate always to allow tnl
* implementations that go model->clip even when eye is required.
*/
if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
calculate_model_project_matrix(ctx);
/* ctx->_NeedEyeCoords is now uptodate.
*
* If the truth value of this variable has changed, update for the
* new lighting space and recompute the positions of lights and the
* normal transform.
*
* If the lighting space hasn't changed, may still need to recompute
* light positions & normal transforms for other reasons.
*/
if (new_state & (_NEW_MODELVIEW |
_NEW_LIGHT |
_MESA_NEW_NEED_EYE_COORDS))
update_tnl_spaces( ctx, oldneedeyecoords );
/*
* Here the driver sets up all the ctx->Driver function pointers
* to it's specific, private functions, and performs any
* internal state management necessary, including invalidating
* state of active modules.
*
* Set ctx->NewState to zero to avoid recursion if
* Driver.UpdateState() has to call FLUSH_VERTICES(). (fixed?)
*/
ctx->NewState = 0;
ctx->Driver.UpdateState(ctx, new_state);
ctx->Array.NewState = 0;
/* At this point we can do some assertions to be sure the required
* device driver function pointers are all initialized.
*/
ASSERT(ctx->Driver.GetString);
ASSERT(ctx->Driver.UpdateState);
ASSERT(ctx->Driver.Clear);
ASSERT(ctx->Driver.SetDrawBuffer);
ASSERT(ctx->Driver.GetBufferSize);
if (ctx->Visual.accumRedBits > 0) {
ASSERT(ctx->Driver.Accum);
}
ASSERT(ctx->Driver.DrawPixels);
ASSERT(ctx->Driver.ReadPixels);
ASSERT(ctx->Driver.CopyPixels);
ASSERT(ctx->Driver.Bitmap);
ASSERT(ctx->Driver.ResizeBuffers);
ASSERT(ctx->Driver.TexImage1D);
ASSERT(ctx->Driver.TexImage2D);
ASSERT(ctx->Driver.TexImage3D);
ASSERT(ctx->Driver.TexSubImage1D);
ASSERT(ctx->Driver.TexSubImage2D);
ASSERT(ctx->Driver.TexSubImage3D);
ASSERT(ctx->Driver.CopyTexImage1D);
ASSERT(ctx->Driver.CopyTexImage2D);
ASSERT(ctx->Driver.CopyTexSubImage1D);
ASSERT(ctx->Driver.CopyTexSubImage2D);
ASSERT(ctx->Driver.CopyTexSubImage3D);
if (ctx->Extensions.ARB_texture_compression) {
ASSERT(ctx->Driver.BaseCompressedTexFormat);
ASSERT(ctx->Driver.CompressedTextureSize);
ASSERT(ctx->Driver.GetCompressedTexImage);
#if 0 /* HW drivers need these, but not SW rasterizers */
ASSERT(ctx->Driver.CompressedTexImage1D);
ASSERT(ctx->Driver.CompressedTexImage2D);
ASSERT(ctx->Driver.CompressedTexImage3D);
ASSERT(ctx->Driver.CompressedTexSubImage1D);
ASSERT(ctx->Driver.CompressedTexSubImage2D);
ASSERT(ctx->Driver.CompressedTexSubImage3D);
#endif
}
}