/**
* Update the ctx->Vertex/Geometry/FragmentProgram._Current pointers to point
* to the current/active programs. Then call ctx->Driver.BindProgram() to
* tell the driver which programs to use.
*
* Programs may come from 3 sources: GLSL shaders, ARB/NV_vertex/fragment
* programs or programs derived from fixed-function state.
*
* This function needs to be called after texture state validation in case
* we're generating a fragment program from fixed-function texture state.
*
* \return bitfield which will indicate _NEW_PROGRAM state if a new vertex
* or fragment program is being used.
*/
static GLbitfield
update_program(struct gl_context *ctx)
{
const struct gl_shader_program *vsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
const struct gl_shader_program *gsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
struct gl_shader_program *fsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
const struct gl_shader_program *csProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current;
const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current;
const struct gl_geometry_program *prevGP = ctx->GeometryProgram._Current;
const struct gl_compute_program *prevCP = ctx->ComputeProgram._Current;
GLbitfield new_state = 0x0;
/*
* Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
* pointers to the programs that should be used for rendering. If either
* is NULL, use fixed-function code paths.
*
* These programs may come from several sources. The priority is as
* follows:
* 1. OpenGL 2.0/ARB vertex/fragment shaders
* 2. ARB/NV vertex/fragment programs
* 3. Programs derived from fixed-function state.
*
* Note: it's possible for a vertex shader to get used with a fragment
* program (and vice versa) here, but in practice that shouldn't ever
* come up, or matter.
*/
if (fsProg && fsProg->LinkStatus
&& fsProg->_LinkedShaders[MESA_SHADER_FRAGMENT]) {
/* Use GLSL fragment shader */
_mesa_reference_shader_program(ctx,
&ctx->_Shader->_CurrentFragmentProgram,
fsProg);
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
gl_fragment_program(fsProg->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program));
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
else if (ctx->FragmentProgram._Enabled) {
/* Use user-defined fragment program */
_mesa_reference_shader_program(ctx,
&ctx->_Shader->_CurrentFragmentProgram,
NULL);
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
ctx->FragmentProgram.Current);
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
/* Use fragment program generated from fixed-function state */
struct gl_shader_program *f = _mesa_get_fixed_func_fragment_program(ctx);
_mesa_reference_shader_program(ctx,
&ctx->_Shader->_CurrentFragmentProgram,
f);
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
gl_fragment_program(f->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program));
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
gl_fragment_program(f->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program));
}
else {
/* No fragment program */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
if (gsProg && gsProg->LinkStatus
&& gsProg->_LinkedShaders[MESA_SHADER_GEOMETRY]) {
/* Use GLSL geometry shader */
_mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current,
gl_geometry_program(gsProg->_LinkedShaders[MESA_SHADER_GEOMETRY]->Program));
} else {
/* No geometry program */
_mesa_reference_geomprog(ctx, &ctx->GeometryProgram._Current, NULL);
}
/* Examine vertex program after fragment program as
* _mesa_get_fixed_func_vertex_program() needs to know active
* fragprog inputs.
*/
if (vsProg && vsProg->LinkStatus
&& vsProg->_LinkedShaders[MESA_SHADER_VERTEX]) {
/* Use GLSL vertex shader */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
gl_vertex_program(vsProg->_LinkedShaders[MESA_SHADER_VERTEX]->Program));
}
else if (ctx->VertexProgram._Enabled) {
/* Use user-defined vertex program */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
ctx->VertexProgram.Current);
}
else if (ctx->VertexProgram._MaintainTnlProgram) {
/* Use vertex program generated from fixed-function state */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
_mesa_get_fixed_func_vertex_program(ctx));
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
ctx->VertexProgram._Current);
}
else {
/* no vertex program */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
}
if (csProg && csProg->LinkStatus
&& csProg->_LinkedShaders[MESA_SHADER_COMPUTE]) {
/* Use GLSL compute shader */
_mesa_reference_compprog(ctx, &ctx->ComputeProgram._Current,
gl_compute_program(csProg->_LinkedShaders[MESA_SHADER_COMPUTE]->Program));
} else {
/* no compute program */
_mesa_reference_compprog(ctx, &ctx->ComputeProgram._Current, NULL);
}
/* Let the driver know what's happening:
*/
if (ctx->FragmentProgram._Current != prevFP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
(struct gl_program *) ctx->FragmentProgram._Current);
}
}
if (ctx->GeometryProgram._Current != prevGP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_GEOMETRY_PROGRAM_NV,
(struct gl_program *) ctx->GeometryProgram._Current);
}
}
if (ctx->VertexProgram._Current != prevVP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
(struct gl_program *) ctx->VertexProgram._Current);
}
}
if (ctx->ComputeProgram._Current != prevCP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_COMPUTE_PROGRAM_NV,
(struct gl_program *) ctx->ComputeProgram._Current);
}
}
return new_state;
}
/**
* Update vertex/fragment program state. In particular, update these fields:
* ctx->VertexProgram._Current
* ctx->VertexProgram._TnlProgram,
* These point to the highest priority enabled vertex/fragment program or are
* NULL if fixed-function processing is to be done.
*
* This function needs to be called after texture state validation in case
* we're generating a fragment program from fixed-function texture state.
*
* \return bitfield which will indicate _NEW_PROGRAM state if a new vertex
* or fragment program is being used.
*/
static GLbitfield
update_program(GLcontext *ctx)
{
const struct gl_shader_program *shProg = ctx->Shader.CurrentProgram;
const struct gl_vertex_program *prevVP = ctx->VertexProgram._Current;
const struct gl_fragment_program *prevFP = ctx->FragmentProgram._Current;
GLbitfield new_state = 0x0;
/*
* Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
* pointers to the programs that should be used for rendering. If either
* is NULL, use fixed-function code paths.
*
* These programs may come from several sources. The priority is as
* follows:
* 1. OpenGL 2.0/ARB vertex/fragment shaders
* 2. ARB/NV vertex/fragment programs
* 3. Programs derived from fixed-function state.
*
* Note: it's possible for a vertex shader to get used with a fragment
* program (and vice versa) here, but in practice that shouldn't ever
* come up, or matter.
*/
if (shProg && shProg->LinkStatus && shProg->FragmentProgram) {
/* Use shader programs */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
shProg->FragmentProgram);
}
else if (ctx->FragmentProgram._Enabled) {
/* use user-defined vertex program */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
ctx->FragmentProgram.Current);
}
else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
/* Use fragment program generated from fixed-function state.
*/
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
_mesa_get_fixed_func_fragment_program(ctx));
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._TexEnvProgram,
ctx->FragmentProgram._Current);
}
else {
/* no fragment program */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
}
/* Examine vertex program after fragment program as
* _mesa_get_fixed_func_vertex_program() needs to know active
* fragprog inputs.
*/
if (shProg && shProg->LinkStatus && shProg->VertexProgram) {
/* Use shader programs */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
shProg->VertexProgram);
}
else if (ctx->VertexProgram._Enabled) {
/* use user-defined vertex program */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
ctx->VertexProgram.Current);
}
else if (ctx->VertexProgram._MaintainTnlProgram) {
/* Use vertex program generated from fixed-function state.
*/
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
_mesa_get_fixed_func_vertex_program(ctx));
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram,
ctx->VertexProgram._Current);
}
else {
/* no vertex program */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
}
/* Let the driver know what's happening:
*/
if (ctx->FragmentProgram._Current != prevFP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
(struct gl_program *) ctx->FragmentProgram._Current);
}
}
if (ctx->VertexProgram._Current != prevVP) {
new_state |= _NEW_PROGRAM;
if (ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
(struct gl_program *) ctx->VertexProgram._Current);
}
}
return new_state;
}
/**
* Update the ctx->*Program._Current pointers to point to the
* current/active programs.
*
* Programs may come from 3 sources: GLSL shaders, ARB/NV_vertex/fragment
* programs or programs derived from fixed-function state.
*
* This function needs to be called after texture state validation in case
* we're generating a fragment program from fixed-function texture state.
*
* \return bitfield which will indicate _NEW_PROGRAM state if a new vertex
* or fragment program is being used.
*/
static GLbitfield
update_program(struct gl_context *ctx)
{
struct gl_program *vsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
struct gl_program *tcsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
struct gl_program *tesProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
struct gl_program *gsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
struct gl_program *fsProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
struct gl_program *csProg =
ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
const struct gl_program *prevVP = ctx->VertexProgram._Current;
const struct gl_program *prevFP = ctx->FragmentProgram._Current;
const struct gl_program *prevGP = ctx->GeometryProgram._Current;
const struct gl_program *prevTCP = ctx->TessCtrlProgram._Current;
const struct gl_program *prevTEP = ctx->TessEvalProgram._Current;
const struct gl_program *prevCP = ctx->ComputeProgram._Current;
/*
* Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
* pointers to the programs that should be used for rendering. If either
* is NULL, use fixed-function code paths.
*
* These programs may come from several sources. The priority is as
* follows:
* 1. OpenGL 2.0/ARB vertex/fragment shaders
* 2. ARB/NV vertex/fragment programs
* 3. ATI fragment shader
* 4. Programs derived from fixed-function state.
*
* Note: it's possible for a vertex shader to get used with a fragment
* program (and vice versa) here, but in practice that shouldn't ever
* come up, or matter.
*/
if (fsProg) {
/* Use GLSL fragment shader */
_mesa_reference_program(ctx, &ctx->FragmentProgram._Current, fsProg);
_mesa_reference_program(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
else if (_mesa_arb_fragment_program_enabled(ctx)) {
/* Use user-defined fragment program */
_mesa_reference_program(ctx, &ctx->FragmentProgram._Current,
ctx->FragmentProgram.Current);
_mesa_reference_program(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
else if (_mesa_ati_fragment_shader_enabled(ctx) &&
ctx->ATIFragmentShader.Current->Program) {
/* Use the enabled ATI fragment shader's associated program */
_mesa_reference_program(ctx, &ctx->FragmentProgram._Current,
ctx->ATIFragmentShader.Current->Program);
_mesa_reference_program(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
/* Use fragment program generated from fixed-function state */
struct gl_shader_program *f = _mesa_get_fixed_func_fragment_program(ctx);
_mesa_reference_program(ctx, &ctx->FragmentProgram._Current,
f->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program);
_mesa_reference_program(ctx, &ctx->FragmentProgram._TexEnvProgram,
f->_LinkedShaders[MESA_SHADER_FRAGMENT]->Program);
}
else {
/* No fragment program */
_mesa_reference_program(ctx, &ctx->FragmentProgram._Current, NULL);
_mesa_reference_program(ctx, &ctx->FragmentProgram._TexEnvProgram,
NULL);
}
if (gsProg) {
/* Use GLSL geometry shader */
_mesa_reference_program(ctx, &ctx->GeometryProgram._Current, gsProg);
} else {
/* No geometry program */
_mesa_reference_program(ctx, &ctx->GeometryProgram._Current, NULL);
}
if (tesProg) {
/* Use GLSL tessellation evaluation shader */
_mesa_reference_program(ctx, &ctx->TessEvalProgram._Current, tesProg);
}
else {
/* No tessellation evaluation program */
_mesa_reference_program(ctx, &ctx->TessEvalProgram._Current, NULL);
}
if (tcsProg) {
/* Use GLSL tessellation control shader */
_mesa_reference_program(ctx, &ctx->TessCtrlProgram._Current, tcsProg);
}
else {
/* No tessellation control program */
_mesa_reference_program(ctx, &ctx->TessCtrlProgram._Current, NULL);
}
/* Examine vertex program after fragment program as
* _mesa_get_fixed_func_vertex_program() needs to know active
* fragprog inputs.
*/
if (vsProg) {
/* Use GLSL vertex shader */
assert(VP_MODE_SHADER == ctx->VertexProgram._VPMode);
_mesa_reference_program(ctx, &ctx->VertexProgram._Current, vsProg);
}
else if (_mesa_arb_vertex_program_enabled(ctx)) {
/* Use user-defined vertex program */
assert(VP_MODE_SHADER == ctx->VertexProgram._VPMode);
_mesa_reference_program(ctx, &ctx->VertexProgram._Current,
ctx->VertexProgram.Current);
}
else if (ctx->VertexProgram._MaintainTnlProgram) {
/* Use vertex program generated from fixed-function state */
assert(VP_MODE_FF == ctx->VertexProgram._VPMode);
_mesa_reference_program(ctx, &ctx->VertexProgram._Current,
_mesa_get_fixed_func_vertex_program(ctx));
_mesa_reference_program(ctx, &ctx->VertexProgram._TnlProgram,
ctx->VertexProgram._Current);
}
else {
/* no vertex program */
assert(VP_MODE_FF == ctx->VertexProgram._VPMode);
_mesa_reference_program(ctx, &ctx->VertexProgram._Current, NULL);
}
if (csProg) {
/* Use GLSL compute shader */
_mesa_reference_program(ctx, &ctx->ComputeProgram._Current, csProg);
} else {
/* no compute program */
_mesa_reference_program(ctx, &ctx->ComputeProgram._Current, NULL);
}
/* Let the driver know what's happening:
*/
if (ctx->FragmentProgram._Current != prevFP ||
ctx->VertexProgram._Current != prevVP ||
ctx->GeometryProgram._Current != prevGP ||
ctx->TessEvalProgram._Current != prevTEP ||
ctx->TessCtrlProgram._Current != prevTCP ||
ctx->ComputeProgram._Current != prevCP)
return _NEW_PROGRAM;
return 0;
}
