/*
* Mesa 3-D graphics library
- * Version: 6.5.2
*
- * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2007 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
* \file stencil.c
* Stencil operations.
*
- * Note: There's an incompatibility between GL_EXT_stencil_two_side and
+ * Note: There's some conflict between GL_EXT_stencil_two_side and
* OpenGL 2.0's two-sided stencil feature.
*
* With GL_EXT_stencil_two_side, calling glStencilOp/Func/Mask() only the
* But with OpenGL 2.0, calling glStencilOp/Func/Mask() sets BOTH the
* front AND back state.
*
- * So either we advertise the GL_EXT_stencil_two_side extension, or OpenGL
- * 2.0, but not both.
- *
* Also, note that GL_ATI_separate_stencil is different as well:
* glStencilFuncSeparateATI(GLenum frontfunc, GLenum backfunc, ...) vs.
* glStencilFuncSeparate(GLenum face, GLenum func, ...).
+ *
+ * This problem is solved by keeping three sets of stencil state:
+ * state[0] = GL_FRONT state.
+ * state[1] = OpenGL 2.0 / GL_ATI_separate_stencil GL_BACK state.
+ * state[2] = GL_EXT_stencil_two_side GL_BACK state.
*/
#include "glheader.h"
-#include "imports.h"
+
#include "context.h"
#include "macros.h"
#include "stencil.h"
#include "mtypes.h"
+static GLboolean
+validate_stencil_op(struct gl_context *ctx, GLenum op)
+{
+ switch (op) {
+ case GL_KEEP:
+ case GL_ZERO:
+ case GL_REPLACE:
+ case GL_INCR:
+ case GL_DECR:
+ case GL_INVERT:
+ case GL_INCR_WRAP:
+ case GL_DECR_WRAP:
+ return GL_TRUE;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
+static GLboolean
+validate_stencil_func(struct gl_context *ctx, GLenum func)
+{
+ switch (func) {
+ case GL_NEVER:
+ case GL_LESS:
+ case GL_LEQUAL:
+ case GL_GREATER:
+ case GL_GEQUAL:
+ case GL_EQUAL:
+ case GL_NOTEQUAL:
+ case GL_ALWAYS:
+ return GL_TRUE;
+ default:
+ return GL_FALSE;
+ }
+}
+
+
/**
* Set the clear value for the stencil buffer.
*
_mesa_ClearStencil( GLint s )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (ctx->Stencil.Clear == (GLuint) s)
- return;
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glClearStencil(%d)\n", s);
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
ctx->Stencil.Clear = (GLuint) s;
-
- if (ctx->Driver.ClearStencil) {
- ctx->Driver.ClearStencil( ctx, s );
- }
}
* \sa glStencilFunc().
*
* Verifies the parameters and updates the respective values in
- * __GLcontextRec::Stencil. On change flushes the vertices and notifies the
- * driver via the dd_function_table::StencilFunc callback.
+ * __struct gl_contextRec::Stencil. On change flushes the vertices and notifies
+ * the driver via the dd_function_table::StencilFunc callback.
*/
void GLAPIENTRY
_mesa_StencilFuncSeparateATI( GLenum frontfunc, GLenum backfunc, GLint ref, GLuint mask )
{
GET_CURRENT_CONTEXT(ctx);
- const GLint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (frontfunc) {
- case GL_NEVER:
- case GL_LESS:
- case GL_LEQUAL:
- case GL_GREATER:
- case GL_GEQUAL:
- case GL_EQUAL:
- case GL_NOTEQUAL:
- case GL_ALWAYS:
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glStencilFuncSeparateATI (0x%04x)", frontfunc );
- return;
- }
- switch (backfunc) {
- case GL_NEVER:
- case GL_LESS:
- case GL_LEQUAL:
- case GL_GREATER:
- case GL_GEQUAL:
- case GL_EQUAL:
- case GL_NOTEQUAL:
- case GL_ALWAYS:
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glStencilFuncSeparateATI (0x%04x)", backfunc );
- return;
- }
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilFuncSeparateATI()\n");
- ref = CLAMP( ref, 0, stencilMax );
+ if (!validate_stencil_func(ctx, frontfunc)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glStencilFuncSeparateATI(frontfunc)");
+ return;
+ }
+ if (!validate_stencil_func(ctx, backfunc)) {
+ _mesa_error(ctx, GL_INVALID_ENUM,
+ "glStencilFuncSeparateATI(backfunc)");
+ return;
+ }
/* set both front and back state */
if (ctx->Stencil.Function[0] == frontfunc &&
ctx->Stencil.Ref[0] == ref &&
ctx->Stencil.Ref[1] == ref)
return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
ctx->Stencil.Function[0] = frontfunc;
ctx->Stencil.Function[1] = backfunc;
ctx->Stencil.Ref[0] = ctx->Stencil.Ref[1] = ref;
* \sa glStencilFunc().
*
* Verifies the parameters and updates the respective values in
- * __GLcontextRec::Stencil. On change flushes the vertices and notifies the
- * driver via the dd_function_table::StencilFunc callback.
+ * __struct gl_contextRec::Stencil. On change flushes the vertices and notifies
+ * the driver via the dd_function_table::StencilFunc callback.
*/
-void GLAPIENTRY
-_mesa_StencilFunc( GLenum func, GLint ref, GLuint mask )
+static void
+stencil_func(struct gl_context *ctx, GLenum func, GLint ref, GLuint mask)
{
- GET_CURRENT_CONTEXT(ctx);
- const GLint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+ const GLint face = ctx->Stencil.ActiveFace;
- switch (func) {
- case GL_NEVER:
- case GL_LESS:
- case GL_LEQUAL:
- case GL_GREATER:
- case GL_GEQUAL:
- case GL_EQUAL:
- case GL_NOTEQUAL:
- case GL_ALWAYS:
- break;
- default:
- _mesa_error( ctx, GL_INVALID_ENUM, "glStencilFunc (0x%04x)", func );
+ if (face != 0) {
+ if (ctx->Stencil.Function[face] == func &&
+ ctx->Stencil.ValueMask[face] == mask &&
+ ctx->Stencil.Ref[face] == ref)
return;
- }
-
- ref = CLAMP( ref, 0, stencilMax );
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.Function[face] = func;
+ ctx->Stencil.Ref[face] = ref;
+ ctx->Stencil.ValueMask[face] = mask;
- if (ctx->Extensions.ATI_separate_stencil) {
+ /* Only propagate the change to the driver if EXT_stencil_two_side
+ * is enabled.
+ */
+ if (ctx->Driver.StencilFuncSeparate && ctx->Stencil.TestTwoSide) {
+ ctx->Driver.StencilFuncSeparate(ctx, GL_BACK, func, ref, mask);
+ }
+ }
+ else {
/* set both front and back state */
if (ctx->Stencil.Function[0] == func &&
ctx->Stencil.Function[1] == func &&
ctx->Stencil.Ref[0] == ref &&
ctx->Stencil.Ref[1] == ref)
return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
ctx->Stencil.Function[0] = ctx->Stencil.Function[1] = func;
ctx->Stencil.Ref[0] = ctx->Stencil.Ref[1] = ref;
ctx->Stencil.ValueMask[0] = ctx->Stencil.ValueMask[1] = mask;
if (ctx->Driver.StencilFuncSeparate) {
- ctx->Driver.StencilFuncSeparate(ctx, GL_FRONT_AND_BACK,
+ ctx->Driver.StencilFuncSeparate(ctx,
+ ((ctx->Stencil.TestTwoSide)
+ ? GL_FRONT : GL_FRONT_AND_BACK),
func, ref, mask);
}
}
- else {
- /* only set active face state */
- const GLint face = ctx->Stencil.ActiveFace;
- if (ctx->Stencil.Function[face] == func &&
- ctx->Stencil.ValueMask[face] == mask &&
- ctx->Stencil.Ref[face] == ref)
- return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
- ctx->Stencil.Function[face] = func;
- ctx->Stencil.Ref[face] = ref;
- ctx->Stencil.ValueMask[face] = mask;
- if (ctx->Driver.StencilFuncSeparate) {
- ctx->Driver.StencilFuncSeparate(ctx, face ? GL_BACK : GL_FRONT,
- func, ref, mask);
- }
+}
+
+
+void GLAPIENTRY
+_mesa_StencilFunc_no_error(GLenum func, GLint ref, GLuint mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ stencil_func(ctx, func, ref, mask);
+}
+
+
+void GLAPIENTRY
+_mesa_StencilFunc(GLenum func, GLint ref, GLuint mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilFunc()\n");
+
+ if (!validate_stencil_func(ctx, func)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFunc(func)");
+ return;
}
+
+ stencil_func(ctx, func, ref, mask);
}
_mesa_StencilMask( GLuint mask )
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+ const GLint face = ctx->Stencil.ActiveFace;
- if (ctx->Extensions.ATI_separate_stencil) {
- /* set both front and back state */
- if (ctx->Stencil.WriteMask[0] == mask &&
- ctx->Stencil.WriteMask[1] == mask)
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilMask()\n");
+
+ if (face != 0) {
+ /* Only modify the EXT_stencil_two_side back-face state.
+ */
+ if (ctx->Stencil.WriteMask[face] == mask)
return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
- ctx->Stencil.WriteMask[0] = ctx->Stencil.WriteMask[1] = mask;
- if (ctx->Driver.StencilMaskSeparate) {
- ctx->Driver.StencilMaskSeparate(ctx, GL_FRONT_AND_BACK, mask);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.WriteMask[face] = mask;
+
+ /* Only propagate the change to the driver if EXT_stencil_two_side
+ * is enabled.
+ */
+ if (ctx->Driver.StencilMaskSeparate && ctx->Stencil.TestTwoSide) {
+ ctx->Driver.StencilMaskSeparate(ctx, GL_BACK, mask);
}
}
else {
- /* only set active face state */
- const GLint face = ctx->Stencil.ActiveFace;
- if (ctx->Stencil.WriteMask[face] == mask)
+ /* set both front and back state */
+ if (ctx->Stencil.WriteMask[0] == mask &&
+ ctx->Stencil.WriteMask[1] == mask)
return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
- ctx->Stencil.WriteMask[face] = mask;
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.WriteMask[0] = ctx->Stencil.WriteMask[1] = mask;
if (ctx->Driver.StencilMaskSeparate) {
- ctx->Driver.StencilMaskSeparate(ctx, face ? GL_BACK : GL_FRONT, mask);
+ ctx->Driver.StencilMaskSeparate(ctx,
+ ((ctx->Stencil.TestTwoSide)
+ ? GL_FRONT : GL_FRONT_AND_BACK),
+ mask);
}
}
}
* \param zfail action to take when stencil test passes, but depth test fails.
* \param zpass action to take when stencil test passes and the depth test
* passes (or depth testing is not enabled).
- *
+ *
* \sa glStencilOp().
- *
+ *
* Verifies the parameters and updates the respective fields in
- * __GLcontextRec::Stencil. On change flushes the vertices and notifies the
- * driver via the dd_function_table::StencilOp callback.
+ * __struct gl_contextRec::Stencil. On change flushes the vertices and notifies
+ * the driver via the dd_function_table::StencilOp callback.
*/
-void GLAPIENTRY
-_mesa_StencilOp(GLenum fail, GLenum zfail, GLenum zpass)
+static void
+stencil_op(struct gl_context *ctx, GLenum fail, GLenum zfail, GLenum zpass)
{
- GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
-
- switch (fail) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp");
- return;
- }
- switch (zfail) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp");
- return;
- }
- switch (zpass) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp");
+ const GLint face = ctx->Stencil.ActiveFace;
+
+ if (face != 0) {
+ /* only set active face state */
+ if (ctx->Stencil.ZFailFunc[face] == zfail &&
+ ctx->Stencil.ZPassFunc[face] == zpass &&
+ ctx->Stencil.FailFunc[face] == fail)
return;
- }
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.ZFailFunc[face] = zfail;
+ ctx->Stencil.ZPassFunc[face] = zpass;
+ ctx->Stencil.FailFunc[face] = fail;
- if (ctx->Extensions.ATI_separate_stencil) {
+ /* Only propagate the change to the driver if EXT_stencil_two_side
+ * is enabled.
+ */
+ if (ctx->Driver.StencilOpSeparate && ctx->Stencil.TestTwoSide) {
+ ctx->Driver.StencilOpSeparate(ctx, GL_BACK, fail, zfail, zpass);
+ }
+ }
+ else {
/* set both front and back state */
if (ctx->Stencil.ZFailFunc[0] == zfail &&
ctx->Stencil.ZFailFunc[1] == zfail &&
ctx->Stencil.FailFunc[0] == fail &&
ctx->Stencil.FailFunc[1] == fail)
return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
ctx->Stencil.ZFailFunc[0] = ctx->Stencil.ZFailFunc[1] = zfail;
ctx->Stencil.ZPassFunc[0] = ctx->Stencil.ZPassFunc[1] = zpass;
ctx->Stencil.FailFunc[0] = ctx->Stencil.FailFunc[1] = fail;
if (ctx->Driver.StencilOpSeparate) {
- ctx->Driver.StencilOpSeparate(ctx, GL_FRONT_AND_BACK,
- fail, zfail, zpass);
- }
- }
- else {
- /* only set active face state */
- const GLint face = ctx->Stencil.ActiveFace;
- if (ctx->Stencil.ZFailFunc[face] == zfail &&
- ctx->Stencil.ZPassFunc[face] == zpass &&
- ctx->Stencil.FailFunc[face] == fail)
- return;
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
- ctx->Stencil.ZFailFunc[face] = zfail;
- ctx->Stencil.ZPassFunc[face] = zpass;
- ctx->Stencil.FailFunc[face] = fail;
- if (ctx->Driver.StencilOpSeparate) {
- ctx->Driver.StencilOpSeparate(ctx, face ? GL_BACK : GL_FRONT,
+ ctx->Driver.StencilOpSeparate(ctx,
+ ((ctx->Stencil.TestTwoSide)
+ ? GL_FRONT : GL_FRONT_AND_BACK),
fail, zfail, zpass);
}
}
}
+void GLAPIENTRY
+_mesa_StencilOp_no_error(GLenum fail, GLenum zfail, GLenum zpass)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ stencil_op(ctx, fail, zfail, zpass);
+}
+
-#if _HAVE_FULL_GL
-/* GL_EXT_stencil_two_side */
void GLAPIENTRY
-_mesa_ActiveStencilFaceEXT(GLenum face)
+_mesa_StencilOp(GLenum fail, GLenum zfail, GLenum zpass)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (!ctx->Extensions.EXT_stencil_two_side) {
- _mesa_error(ctx, GL_INVALID_OPERATION, "glActiveStencilFaceEXT");
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilOp()\n");
+
+ if (!validate_stencil_op(ctx, fail)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp(sfail)");
return;
}
- if (face == GL_FRONT || face == GL_BACK) {
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
- ctx->Stencil.ActiveFace = (face == GL_FRONT) ? 0 : 1;
+ if (!validate_stencil_op(ctx, zfail)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp(zfail)");
+ return;
}
- else {
- _mesa_error(ctx, GL_INVALID_ENUM, "glActiveStencilFaceEXT(face)");
+
+ if (!validate_stencil_op(ctx, zpass)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOp(zpass)");
+ return;
}
-}
-#endif
+ stencil_op(ctx, fail, zfail, zpass);
+}
-/**
- * OpenGL 2.0 function.
- * \todo Make StencilOp() call this function. And eventually remove the
- * ctx->Driver.StencilOp function and use ctx->Driver.StencilOpSeparate
- * instead.
- */
+/* GL_EXT_stencil_two_side */
void GLAPIENTRY
-_mesa_StencilOpSeparate(GLenum face, GLenum fail, GLenum zfail, GLenum zpass)
+_mesa_ActiveStencilFaceEXT(GLenum face)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
- if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(face)");
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glActiveStencilFaceEXT()\n");
+
+ if (!ctx->Extensions.EXT_stencil_two_side) {
+ _mesa_error(ctx, GL_INVALID_OPERATION, "glActiveStencilFaceEXT");
return;
}
- switch (fail) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(fail)");
- return;
- }
- switch (zfail) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zfail)");
- return;
+ if (face == GL_FRONT || face == GL_BACK) {
+ ctx->Stencil.ActiveFace = (face == GL_FRONT) ? 0 : 2;
}
- switch (zpass) {
- case GL_KEEP:
- case GL_ZERO:
- case GL_REPLACE:
- case GL_INCR:
- case GL_DECR:
- case GL_INVERT:
- break;
- case GL_INCR_WRAP_EXT:
- case GL_DECR_WRAP_EXT:
- if (ctx->Extensions.EXT_stencil_wrap) {
- break;
- }
- /* FALL-THROUGH */
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zpass)");
- return;
+ else {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glActiveStencilFaceEXT(face)");
}
+}
+
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+static void
+stencil_op_separate(struct gl_context *ctx, GLenum face, GLenum sfail,
+ GLenum zfail, GLenum zpass)
+{
+ GLboolean set = GL_FALSE;
if (face != GL_BACK) {
- ctx->Stencil.FailFunc[0] = fail;
- ctx->Stencil.ZFailFunc[0] = zfail;
- ctx->Stencil.ZPassFunc[0] = zpass;
+ /* set front */
+ if (ctx->Stencil.ZFailFunc[0] != zfail ||
+ ctx->Stencil.ZPassFunc[0] != zpass ||
+ ctx->Stencil.FailFunc[0] != sfail){
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.ZFailFunc[0] = zfail;
+ ctx->Stencil.ZPassFunc[0] = zpass;
+ ctx->Stencil.FailFunc[0] = sfail;
+ set = GL_TRUE;
+ }
}
+
if (face != GL_FRONT) {
- ctx->Stencil.FailFunc[1] = fail;
- ctx->Stencil.ZFailFunc[1] = zfail;
- ctx->Stencil.ZPassFunc[1] = zpass;
+ /* set back */
+ if (ctx->Stencil.ZFailFunc[1] != zfail ||
+ ctx->Stencil.ZPassFunc[1] != zpass ||
+ ctx->Stencil.FailFunc[1] != sfail) {
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+ ctx->Stencil.ZFailFunc[1] = zfail;
+ ctx->Stencil.ZPassFunc[1] = zpass;
+ ctx->Stencil.FailFunc[1] = sfail;
+ set = GL_TRUE;
+ }
}
- if (ctx->Driver.StencilOpSeparate) {
- ctx->Driver.StencilOpSeparate(ctx, face, fail, zfail, zpass);
+
+ if (set && ctx->Driver.StencilOpSeparate) {
+ ctx->Driver.StencilOpSeparate(ctx, face, sfail, zfail, zpass);
}
}
-/* OpenGL 2.0 */
void GLAPIENTRY
-_mesa_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
+_mesa_StencilOpSeparate_no_error(GLenum face, GLenum sfail, GLenum zfail,
+ GLenum zpass)
{
GET_CURRENT_CONTEXT(ctx);
- const GLint stencilMax = (1 << ctx->DrawBuffer->Visual.stencilBits) - 1;
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+ stencil_op_separate(ctx, face, sfail, zfail, zpass);
+}
- if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(face)");
+
+void GLAPIENTRY
+_mesa_StencilOpSeparate(GLenum face, GLenum sfail, GLenum zfail, GLenum zpass)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilOpSeparate()\n");
+
+ if (!validate_stencil_op(ctx, sfail)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(sfail)");
return;
}
- switch (func) {
- case GL_NEVER:
- case GL_LESS:
- case GL_LEQUAL:
- case GL_GREATER:
- case GL_GEQUAL:
- case GL_EQUAL:
- case GL_NOTEQUAL:
- case GL_ALWAYS:
- break;
- default:
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(func)");
- return;
+ if (!validate_stencil_op(ctx, zfail)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zfail)");
+ return;
}
- ref = CLAMP(ref, 0, stencilMax);
+ if (!validate_stencil_op(ctx, zpass)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(zpass)");
+ return;
+ }
+
+ if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilOpSeparate(face)");
+ return;
+ }
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+ stencil_op_separate(ctx, face, sfail, zfail, zpass);
+}
- if (face == GL_FRONT || face == GL_FRONT_AND_BACK) {
+
+static void
+stencil_func_separate(struct gl_context *ctx, GLenum face, GLenum func,
+ GLint ref, GLuint mask)
+{
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
+
+ if (face != GL_BACK) {
+ /* set front */
ctx->Stencil.Function[0] = func;
ctx->Stencil.Ref[0] = ref;
ctx->Stencil.ValueMask[0] = mask;
}
- if (face == GL_BACK || face == GL_FRONT_AND_BACK) {
+
+ if (face != GL_FRONT) {
+ /* set back */
ctx->Stencil.Function[1] = func;
ctx->Stencil.Ref[1] = ref;
ctx->Stencil.ValueMask[1] = mask;
}
+
if (ctx->Driver.StencilFuncSeparate) {
ctx->Driver.StencilFuncSeparate(ctx, face, func, ref, mask);
}
/* OpenGL 2.0 */
void GLAPIENTRY
-_mesa_StencilMaskSeparate(GLenum face, GLuint mask)
+_mesa_StencilFuncSeparate_no_error(GLenum face, GLenum func, GLint ref,
+ GLuint mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+ stencil_func_separate(ctx, face, func, ref, mask);
+}
+
+
+void GLAPIENTRY
+_mesa_StencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask)
{
GET_CURRENT_CONTEXT(ctx);
- ASSERT_OUTSIDE_BEGIN_END(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilFuncSeparate()\n");
if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
- _mesa_error(ctx, GL_INVALID_ENUM, "glStencilaMaskSeparate(face)");
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(face)");
return;
}
- FLUSH_VERTICES(ctx, _NEW_STENCIL);
+ if (!validate_stencil_func(ctx, func)) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilFuncSeparate(func)");
+ return;
+ }
+
+ stencil_func_separate(ctx, face, func, ref, mask);
+}
+
+
+static void
+stencil_mask_separate(struct gl_context *ctx, GLenum face, GLuint mask)
+{
+ FLUSH_VERTICES(ctx, ctx->DriverFlags.NewStencil ? 0 : _NEW_STENCIL);
+ ctx->NewDriverState |= ctx->DriverFlags.NewStencil;
if (face != GL_BACK) {
ctx->Stencil.WriteMask[0] = mask;
}
+
if (face != GL_FRONT) {
ctx->Stencil.WriteMask[1] = mask;
}
+
if (ctx->Driver.StencilMaskSeparate) {
ctx->Driver.StencilMaskSeparate(ctx, face, mask);
}
}
-/**
- * Update derived stencil state.
- */
-void
-_mesa_update_stencil(GLcontext *ctx)
+/* OpenGL 2.0 */
+void GLAPIENTRY
+_mesa_StencilMaskSeparate_no_error(GLenum face, GLuint mask)
{
- if (ctx->Extensions.EXT_stencil_two_side) {
- ctx->Stencil._TestTwoSide = ctx->Stencil.TestTwoSide;
- }
- else {
- ctx->Stencil._TestTwoSide =
- (ctx->Stencil.Function[0] != ctx->Stencil.Function[1] ||
- ctx->Stencil.FailFunc[0] != ctx->Stencil.FailFunc[1] ||
- ctx->Stencil.ZPassFunc[0] != ctx->Stencil.ZPassFunc[1] ||
- ctx->Stencil.ZFailFunc[0] != ctx->Stencil.ZFailFunc[1] ||
- ctx->Stencil.Ref[0] != ctx->Stencil.Ref[1] ||
- ctx->Stencil.ValueMask[0] != ctx->Stencil.ValueMask[1] ||
- ctx->Stencil.WriteMask[0] != ctx->Stencil.WriteMask[1]);
+ GET_CURRENT_CONTEXT(ctx);
+ stencil_mask_separate(ctx, face, mask);
+}
+
+
+void GLAPIENTRY
+_mesa_StencilMaskSeparate(GLenum face, GLuint mask)
+{
+ GET_CURRENT_CONTEXT(ctx);
+
+ if (MESA_VERBOSE & VERBOSE_API)
+ _mesa_debug(ctx, "glStencilMaskSeparate()\n");
+
+ if (face != GL_FRONT && face != GL_BACK && face != GL_FRONT_AND_BACK) {
+ _mesa_error(ctx, GL_INVALID_ENUM, "glStencilaMaskSeparate(face)");
+ return;
}
+
+ stencil_mask_separate(ctx, face, mask);
}
*
* \param ctx GL context.
*
- * Initializes __GLcontextRec::Stencil attribute group.
+ * Initializes __struct gl_contextRec::Stencil attribute group.
*/
void
-_mesa_init_stencil(GLcontext *ctx)
+_mesa_init_stencil(struct gl_context *ctx)
{
ctx->Stencil.Enabled = GL_FALSE;
ctx->Stencil.TestTwoSide = GL_FALSE;
- ctx->Stencil.ActiveFace = 0; /* 0 = GL_FRONT, 1 = GL_BACK */
+ ctx->Stencil.ActiveFace = 0; /* 0 = GL_FRONT, 2 = GL_BACK */
ctx->Stencil.Function[0] = GL_ALWAYS;
ctx->Stencil.Function[1] = GL_ALWAYS;
+ ctx->Stencil.Function[2] = GL_ALWAYS;
ctx->Stencil.FailFunc[0] = GL_KEEP;
ctx->Stencil.FailFunc[1] = GL_KEEP;
+ ctx->Stencil.FailFunc[2] = GL_KEEP;
ctx->Stencil.ZPassFunc[0] = GL_KEEP;
ctx->Stencil.ZPassFunc[1] = GL_KEEP;
+ ctx->Stencil.ZPassFunc[2] = GL_KEEP;
ctx->Stencil.ZFailFunc[0] = GL_KEEP;
ctx->Stencil.ZFailFunc[1] = GL_KEEP;
+ ctx->Stencil.ZFailFunc[2] = GL_KEEP;
ctx->Stencil.Ref[0] = 0;
ctx->Stencil.Ref[1] = 0;
- ctx->Stencil.ValueMask[0] = ~0U;
- ctx->Stencil.ValueMask[1] = ~0U;
- ctx->Stencil.WriteMask[0] = ~0U;
- ctx->Stencil.WriteMask[1] = ~0U;
+ ctx->Stencil.Ref[2] = 0;
+
+ /* 4.1.4 Stencil Test section of the GL-ES 3.0 specification says:
+ *
+ * "In the initial state, [...] the front and back stencil mask are both
+ * set to the value 2^s − 1, where s is greater than or equal to the
+ * number of bits in the deepest stencil buffer* supported by the GL
+ * implementation."
+ *
+ * Since the maximum supported precision for stencil buffers is 8 bits,
+ * mask values should be initialized to 2^8 - 1 = 0xFF.
+ */
+ ctx->Stencil.ValueMask[0] = 0xFF;
+ ctx->Stencil.ValueMask[1] = 0xFF;
+ ctx->Stencil.ValueMask[2] = 0xFF;
+ ctx->Stencil.WriteMask[0] = 0xFF;
+ ctx->Stencil.WriteMask[1] = 0xFF;
+ ctx->Stencil.WriteMask[2] = 0xFF;
+
ctx->Stencil.Clear = 0;
+ ctx->Stencil._BackFace = 1;
}
projects / mesa.git / blobdiff