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The code's cleaner and a step toward supporting float-valued texture sampling.
Some optimizations for common cases can be added and re-enabled...
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t_vb_program.c
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do the same math as for fixed function pipe, including
user clip planes.
(mostly resurrected from the dead t_vb_arbprogram.c code)
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of -I flags.
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This is a bit of a hack for now because the tnl module is using the swrast
module to fetch texels. The texture fetch/filter code should probably be
moved into the main/ module since it doesn't really depend upon other
swrast code.
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use VertexProgram._Current instead of VertexProgram.Current in a few more places.
Only fixup fogc and psiz in case this is really a nv program (others are fine
if undefined), and fix this case up so the values actually get written.
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handle branch instructions, etc.
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Among changes:
Remove ctx->FragmentProgram._Active
Remove _UseTexEnvProgram
Move _MaintainTnlProgram, _MaintainTexEnvProgram, _TexEnvProgram and
_TnlProgram fields.
Remove/disable old GLSL interpreter code.
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Massage nvvertexec.c code to work more like s_nvfragprog.c - another step
toward unifying vertex/fragment program execution.
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"gl_" to match other structs.
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just aliases for members of the VB->AttribPtr[] array.
Begin replacing FogCoordPtr with VB->AttribPtr[_TNL_ATTRIB_FOG], and similarly
for NormalPtr, TexCoordPtr, PointSizePtr, etc.
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in various places.
Note that ctx->Texture.CurrentUnit needs to be tested against Coord/Image
limits when referenced, not just in glActiveTexture().
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only includes the 6 frustum bits, not the user-clip plane bit, nor the vertex
cull bit.
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- generate error on NULL pointers in glShaderSourceARB;
- reinstall program object, if current, in glLinkProgramARB;
- vertex and fragment shaders are optional in program object;
- floor asm was wrongly computed for x86 back-end;
- allow for (void) idiom in function prototypes;
- all fixed-state uniforms are updated;
- local variable initializers are working;
- implement texture* and shadow* functions for vertex processor;
- generate error if too many arguments in general constructor;
- trim unused data in general constructor;
- struct r-value field select was badly relocated;
Changes:
- add derived state gl_fog_attrib::_Scale;
- add derived state gl_light::_CosCutoffNeg;
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If enabled, all other stages, except render, are disabled.
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Instructions, InputsRead, OutputsWritten, and Parameters.
Also, added debug functions: _mesa_print_instruction(),
_mesa_print_program_parameters() and revamp _mesa_print_program().
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Based on patch by Ian (#4967) but also unify instruction opcodes.
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vertex_program struct.
Allow switching between regular and vertex_program implementations
of fixed function TNL with the MESA_TNL_PROG environment var
(previously this required recompilation).
Ensure program compilation only references program data, not the
wider context. This means that compiled programs only need to be
invalidated when the program string changes, not on other state
changes.
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- remove input/output fields, input tracking removed.
- remove state fields, the validate function now called
on every statechange.
- add an explicit 'create' function.
Add in code to build vertex program to implement current t&l state. Still
disabled, but turn on with a #define in t_vp_build.h.
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program is enabled AND the currently bound program is valid.
Check _Enable instead of Enable to prevent things from blowing up
when someone calls glEnable(GL_VERTEX_PROGRAM_ARB) without actually
defining a program.
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Some need to be set per-vertex, other per-primitive. Cleared that up.
Only need to init temp/result registers if executing an NV vertex program.
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- cope with input vectors with size less than that of the emitted
attribute.
- cope with vertices with 'holes' inside and between vertices.
Fix calculation of tnl->render_inputs to work with fp programs.
Mirror VB->PointSizePtr in VB->AttribPtr so that it can work with t_vertex.c.
Transition swrast_setup/ to use t_vertex.c to build swrast vertices.
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Use GLubyte * instead of void * for gl_client_array->Ptr to simplify upcoming
pointer arithmetic changes.
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hook in global state references, etc. for ARB programs.
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Moved type conversion and interpolation macros into macros.h
Updated all the files that used to include mmath.h
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Re-org of some GL_NV_vertex_program code.
Replace MAX_TEXTURE_UNITS with MAX_TEXTURE_COORD_UNITS and MAX_TEXTURE_IMAGE_UNITS.
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