/*
* Mesa 3-D graphics library
- * Version: 7.1
+ * Version: 7.3
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
#include "texstate.h"
+static void
+update_separate_specular(GLcontext *ctx)
+{
+ if (NEED_SECONDARY_COLOR(ctx))
+ ctx->_TriangleCaps |= DD_SEPARATE_SPECULAR;
+ else
+ ctx->_TriangleCaps &= ~DD_SEPARATE_SPECULAR;
+}
+
+
/**
* Update state dependent on vertex arrays.
*/
}
+/**
+ * Update the following fields:
+ * ctx->VertexProgram._Enabled
+ * ctx->FragmentProgram._Enabled
+ * ctx->ATIFragmentShader._Enabled
+ * This needs to be done before texture state validation.
+ */
static void
-update_program(GLcontext *ctx)
+update_program_enables(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;
-
/* These _Enabled flags indicate if the program is enabled AND valid. */
ctx->VertexProgram._Enabled = ctx->VertexProgram.Enabled
&& ctx->VertexProgram.Current->Base.Instructions;
ctx->FragmentProgram._Enabled = ctx->FragmentProgram.Enabled
&& ctx->FragmentProgram.Current->Base.Instructions;
ctx->ATIFragmentShader._Enabled = ctx->ATIFragmentShader.Enabled
- && ctx->ATIFragmentShader.Current->Instructions;
+ && ctx->ATIFragmentShader.Current->Instructions[0];
+}
+
+
+/**
+ * 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.
+ */
+static void
+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;
/*
* Set the ctx->VertexProgram._Current and ctx->FragmentProgram._Current
- * pointers to the programs that should be enabled/used. These will only
- * be NULL if we need to use the fixed-function code.
+ * 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:
* come up, or matter.
*/
- /**
- ** Fragment program
- **/
-#if 1
- /* XXX get rid of this someday? */
- ctx->FragmentProgram._Active = GL_FALSE;
-#endif
if (shProg && shProg->LinkStatus && shProg->FragmentProgram) {
- /* user-defined fragment shader */
+ /* Use shader programs */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
shProg->FragmentProgram);
}
else if (ctx->FragmentProgram._Enabled) {
- /* use user-defined fragment program */
+ /* use user-defined vertex program */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current,
ctx->FragmentProgram.Current);
}
else if (ctx->FragmentProgram._MaintainTexEnvProgram) {
- /* fragment program generated from fixed-function state */
+ /* 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);
-
- /* XXX get rid of this confusing stuff someday? */
- ctx->FragmentProgram._Active = ctx->FragmentProgram._Enabled;
- if (ctx->FragmentProgram._UseTexEnvProgram)
- ctx->FragmentProgram._Active = GL_TRUE;
}
else {
/* no fragment program */
_mesa_reference_fragprog(ctx, &ctx->FragmentProgram._Current, NULL);
}
- if (ctx->FragmentProgram._Current != prevFP && ctx->Driver.BindProgram) {
- ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
- (struct gl_program *) ctx->FragmentProgram._Current);
- }
-
- /**
- ** Vertex program
- **/
-#if 1
- /* XXX get rid of this someday? */
- _mesa_reference_vertprog(ctx, &ctx->VertexProgram._TnlProgram, NULL);
-#endif
+ /* 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) {
- /* user-defined vertex shader */
+ /* Use shader programs */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current,
- shProg->VertexProgram);
+ shProg->VertexProgram);
}
else if (ctx->VertexProgram._Enabled) {
/* use user-defined vertex program */
ctx->VertexProgram.Current);
}
else if (ctx->VertexProgram._MaintainTnlProgram) {
- /* vertex program generated from fixed-function state */
+ /* 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 / used fixed-function code */
+ /* no vertex program */
_mesa_reference_vertprog(ctx, &ctx->VertexProgram._Current, NULL);
}
+ /* Let the driver know what's happening:
+ */
+ if (ctx->FragmentProgram._Current != prevFP && ctx->Driver.BindProgram) {
+ ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB,
+ (struct gl_program *) ctx->FragmentProgram._Current);
+ }
+
if (ctx->VertexProgram._Current != prevVP && ctx->Driver.BindProgram) {
ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB,
- (struct gl_program *) ctx->VertexProgram._Current);
+ (struct gl_program *) ctx->VertexProgram._Current);
}
}
}
+/**
+ * Update derived multisample state.
+ */
+static void
+update_multisample(GLcontext *ctx)
+{
+ ctx->Multisample._Enabled = GL_FALSE;
+ if (ctx->Multisample.Enabled &&
+ ctx->DrawBuffer &&
+ ctx->DrawBuffer->Visual.sampleBuffers)
+ ctx->Multisample._Enabled = GL_TRUE;
+}
+
+
/**
* Update derived color/blend/logicop state.
*/
}
+/*
+ * Check polygon state and set DD_TRI_CULL_FRONT_BACK and/or DD_TRI_OFFSET
+ * in ctx->_TriangleCaps if needed.
+ */
+static void
+update_polygon(GLcontext *ctx)
+{
+ ctx->_TriangleCaps &= ~(DD_TRI_CULL_FRONT_BACK | DD_TRI_OFFSET);
+
+ if (ctx->Polygon.CullFlag && ctx->Polygon.CullFaceMode == GL_FRONT_AND_BACK)
+ ctx->_TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
+
+ if ( ctx->Polygon.OffsetPoint
+ || ctx->Polygon.OffsetLine
+ || ctx->Polygon.OffsetFill)
+ ctx->_TriangleCaps |= DD_TRI_OFFSET;
+}
+
/**
* Update the ctx->_TriangleCaps bitfield.
* This function must be called after other update_*() functions since
* there are dependencies on some other derived values.
*/
+#if 0
static void
update_tricaps(GLcontext *ctx, GLbitfield new_state)
{
if (ctx->Stencil._TestTwoSide)
ctx->_TriangleCaps |= DD_TRI_TWOSTENCIL;
}
+#endif
/**
GLbitfield new_state = ctx->NewState;
GLbitfield prog_flags = _NEW_PROGRAM;
+ if (new_state == _NEW_CURRENT_ATTRIB)
+ goto out;
+
if (MESA_VERBOSE & VERBOSE_STATE)
_mesa_print_state("_mesa_update_state", new_state);
+ /* Determine which state flags effect vertex/fragment program state */
+ if (ctx->FragmentProgram._MaintainTexEnvProgram) {
+ prog_flags |= (_NEW_TEXTURE | _NEW_FOG | _DD_NEW_SEPARATE_SPECULAR);
+ }
+ if (ctx->VertexProgram._MaintainTnlProgram) {
+ prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX |
+ _NEW_TRANSFORM | _NEW_POINT |
+ _NEW_FOG | _NEW_LIGHT |
+ _MESA_NEW_NEED_EYE_COORDS);
+ }
+
+ /*
+ * Now update derived state info
+ */
+
+ if (new_state & prog_flags)
+ update_program_enables( ctx );
+
if (new_state & (_NEW_MODELVIEW|_NEW_PROJECTION))
_mesa_update_modelview_project( ctx, new_state );
if (new_state & (_NEW_SCISSOR | _NEW_BUFFERS | _NEW_VIEWPORT))
_mesa_update_draw_buffer_bounds( ctx );
+ if (new_state & _NEW_POLYGON)
+ update_polygon( ctx );
+
if (new_state & _NEW_LIGHT)
_mesa_update_lighting( ctx );
_mesa_update_stencil( ctx );
#if FEATURE_pixel_transfer
- if (new_state & _IMAGE_NEW_TRANSFER_STATE)
+ if (new_state & _MESA_NEW_TRANSFER_STATE)
_mesa_update_pixel( ctx, new_state );
#endif
+ if (new_state & _DD_NEW_SEPARATE_SPECULAR)
+ update_separate_specular( ctx );
+
if (new_state & (_NEW_ARRAY | _NEW_PROGRAM))
update_arrays( ctx );
if (new_state & (_NEW_BUFFERS | _NEW_VIEWPORT))
update_viewport_matrix(ctx);
+ if (new_state & _NEW_MULTISAMPLE)
+ update_multisample( ctx );
+
if (new_state & _NEW_COLOR)
update_color( ctx );
+#if 0
if (new_state & (_NEW_POINT | _NEW_LINE | _NEW_POLYGON | _NEW_LIGHT
| _NEW_STENCIL | _DD_NEW_SEPARATE_SPECULAR))
update_tricaps( ctx, new_state );
+#endif
/* ctx->_NeedEyeCoords is now up to date.
*
if (new_state & _MESA_NEW_NEED_EYE_COORDS)
_mesa_update_tnl_spaces( ctx, new_state );
- if (ctx->FragmentProgram._MaintainTexEnvProgram) {
- prog_flags |= (_NEW_TEXTURE | _NEW_FOG | _DD_NEW_SEPARATE_SPECULAR);
- }
- if (ctx->VertexProgram._MaintainTnlProgram) {
- prog_flags |= (_NEW_ARRAY | _NEW_TEXTURE | _NEW_TEXTURE_MATRIX |
- _NEW_TRANSFORM | _NEW_POINT |
- _NEW_FOG | _NEW_LIGHT |
- _MESA_NEW_NEED_EYE_COORDS);
- }
if (new_state & prog_flags)
update_program( ctx );
-
-
/*
* Give the driver a chance to act upon the new_state flags.
* The driver might plug in different span functions, for example.
* Set ctx->NewState to zero to avoid recursion if
* Driver.UpdateState() has to call FLUSH_VERTICES(). (fixed?)
*/
+ out:
new_state = ctx->NewState;
ctx->NewState = 0;
ctx->Driver.UpdateState(ctx, new_state);
_mesa_update_state_locked(ctx);
_mesa_unlock_context_textures(ctx);
}
+
+
+
+
+/**
+ * Want to figure out which fragment program inputs are actually
+ * constant/current values from ctx->Current. These should be
+ * referenced as a tracked state variable rather than a fragment
+ * program input, to save the overhead of putting a constant value in
+ * every submitted vertex, transferring it to hardware, interpolating
+ * it across the triangle, etc...
+ *
+ * When there is a VP bound, just use vp->outputs. But when we're
+ * generating vp from fixed function state, basically want to
+ * calculate:
+ *
+ * vp_out_2_fp_in( vp_in_2_vp_out( varying_inputs ) |
+ * potential_vp_outputs )
+ *
+ * Where potential_vp_outputs is calculated by looking at enabled
+ * texgen, etc.
+ *
+ * The generated fragment program should then only declare inputs that
+ * may vary or otherwise differ from the ctx->Current values.
+ * Otherwise, the fp should track them as state values instead.
+ */
+void
+_mesa_set_varying_vp_inputs( GLcontext *ctx,
+ GLbitfield varying_inputs )
+{
+ if (ctx->varying_vp_inputs != varying_inputs) {
+ ctx->varying_vp_inputs = varying_inputs;
+ ctx->NewState |= _NEW_ARRAY;
+ /*_mesa_printf("%s %x\n", __FUNCTION__, varying_inputs);*/
+ }
+}
+
+
+/**
+ * Used by drivers to tell core Mesa that the driver is going to
+ * install/ use its own vertex program. In particular, this will
+ * prevent generated fragment programs from using state vars instead
+ * of ordinary varyings/inputs.
+ */
+void
+_mesa_set_vp_override(GLcontext *ctx, GLboolean flag)
+{
+ if (ctx->VertexProgram._Overriden != flag) {
+ ctx->VertexProgram._Overriden = flag;
+
+ /* Set one of the bits which will trigger fragment program
+ * regeneration:
+ */
+ ctx->NewState |= _NEW_ARRAY;
+ }
+}
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