[Mesa-dev] [PATCH] Add support for NV_depth_buffer_float v2.
Emil Velikov
emil.l.velikov at gmail.com
Mon Sep 8 11:10:52 PDT 2014
Hi Mathias
On 08/09/14 17:39, Mathias Fröhlich wrote:
>
> Hi,
>
> On Monday, September 08, 2014 13:16:27 Roland Scheidegger wrote:
>>> Add support for the unclamped versions of glDepthRange
>>> and relatives. Also starting with OpenGL 4.2 the traditional
>>> functions for this should no longer clamp the values to [0, 1].
>> This looks wrong to me (the NV_depth_buffer part may be ok, just skimmed
>> through it).
>> The core functions still (some would probably say unfortunately...)
>> clamp the values to [0,1]. Only 4.2 had language indicating otherwise,
>> however this was retroactively fixed (see GL 4.3 spec, chapter F.5,
>> Change Log for Released Specifications, page 647).
>
> Thanks for pointing this out. I did indeed only look at 4.2 where
> I did find hints that clamping got removed.
>
> Below the v2 patch that only avoids clamping when being called
> through the *NV functions.
>
I have the sneaky feeling that you've not ran 'make check' after the patch ?
To confirm that it's ran fully you might need to build mesa twice - once with
--disable-shared-glapi and once without (disable egl and gles* for the time
being).
This will lead you to some changes in src/mapi/*glapi/tests/check_table.cpp.
A couple of other nitpicks
- Please split the patch - one for the rework of existing functions and
another one for the new extension.
- Adding a line to the release notes :)
Thanks
Emil
> Greetings
>
> Mathias
>
>
> Add support for the unclamped versions of glDepthRange
> and relatives.
> Note that OpenGL 4.2 introduced that the traditonal
> glDepthRange functions may no longer clamp to [0, 1],
> but OpenGL 4.3 already revoked this behavior to clamp
> the arguments.
>
> Signed-off-by: Mathias Froehlich <Mathias.Froehlich at web.de>
> ---
> docs/GL3.txt | 1 +
> src/mapi/glapi/gen/NV_depth_buffer_float.xml | 24 ++++++++
> src/mapi/glapi/gen/gl_API.xml | 2 +
> src/mesa/drivers/common/meta.c | 3 +-
> src/mesa/main/attrib.c | 6 +-
> src/mesa/main/depth.c | 82 +++++++++++++++++++---------
> src/mesa/main/depth.h | 6 ++
> src/mesa/main/dlist.c | 67 +++++++++++++++++++++++
> src/mesa/main/extensions.c | 1 +
> src/mesa/main/viewport.c | 77 +++++++++++++++++---------
> src/mesa/main/viewport.h | 9 ++-
> 11 files changed, 223 insertions(+), 55 deletions(-)
> create mode 100644 src/mapi/glapi/gen/NV_depth_buffer_float.xml
>
> diff --git a/docs/GL3.txt b/docs/GL3.txt
> index f5d5e72..9a3ceb9 100644
> --- a/docs/GL3.txt
> +++ b/docs/GL3.txt
> @@ -144,6 +144,7 @@ GL 4.2, GLSL 4.20:
> GL_ARB_shading_language_420pack DONE (all drivers that support GLSL 1.30)
> GL_ARB_internalformat_query DONE (i965, nv50, nvc0, r300, r600, radeonsi, llvmpipe, softpipe)
> GL_ARB_map_buffer_alignment DONE (all drivers)
> + GL_NV_depth_buffer_float DONE (all drivers)
>
>
> GL 4.3, GLSL 4.30:
> diff --git a/src/mapi/glapi/gen/NV_depth_buffer_float.xml b/src/mapi/glapi/gen/NV_depth_buffer_float.xml
> new file mode 100644
> index 0000000..17ee268
> --- /dev/null
> +++ b/src/mapi/glapi/gen/NV_depth_buffer_float.xml
> @@ -0,0 +1,24 @@
> +<?xml version="1.0"?>
> +<!DOCTYPE OpenGLAPI SYSTEM "gl_API.dtd">
> +
> +<!-- Note: no GLX protocol info yet. -->
> +
> +<OpenGLAPI>
> +
> +<category name="GL_NV_depth_buffer_float" number="417">
> +
> + <function name="DepthRangedNV" offset="assign">
> + <param name="n" type="GLdouble"/>
> + <param name="f" type="GLdouble"/>
> + </function>
> + <function name="ClearDepthdNV" offset="assign">
> + <param name="d" type="GLdouble"/>
> + </function>
> + <function name="DepthBoundsdNV" offset="assign">
> + <param name="zmin" type="GLdouble"/>
> + <param name="zmax" type="GLdouble"/>
> + </function>
> +
> +</category>
> +
> +</OpenGLAPI>
> diff --git a/src/mapi/glapi/gen/gl_API.xml b/src/mapi/glapi/gen/gl_API.xml
> index 73f2f75..d504faf 100644
> --- a/src/mapi/glapi/gen/gl_API.xml
> +++ b/src/mapi/glapi/gen/gl_API.xml
> @@ -13027,6 +13027,8 @@
>
> <xi:include href="NV_vdpau_interop.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
>
> +<xi:include href="NV_depth_buffer_float.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
> +
> <xi:include href="GL4x.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
>
> </OpenGLAPI>
> diff --git a/src/mesa/drivers/common/meta.c b/src/mesa/drivers/common/meta.c
> index 7a8e627..d165f12 100644
> --- a/src/mesa/drivers/common/meta.c
> +++ b/src/mesa/drivers/common/meta.c
> @@ -1112,7 +1112,8 @@ _mesa_meta_end(struct gl_context *ctx)
> _mesa_set_viewport(ctx, 0, save->ViewportX, save->ViewportY,
> save->ViewportW, save->ViewportH);
> }
> - _mesa_DepthRange(save->DepthNear, save->DepthFar);
> + /* Need to call ...NV since this is guaranteed not to clamp to [0,1] */
> + _mesa_DepthRangedNV(save->DepthNear, save->DepthFar);
> }
>
> if (state & MESA_META_CLAMP_FRAGMENT_COLOR &&
> diff --git a/src/mesa/main/attrib.c b/src/mesa/main/attrib.c
> index 2e289b6..7368ee1 100644
> --- a/src/mesa/main/attrib.c
> +++ b/src/mesa/main/attrib.c
> @@ -1072,7 +1072,9 @@ _mesa_PopAttrib(void)
> const struct gl_depthbuffer_attrib *depth;
> depth = (const struct gl_depthbuffer_attrib *) attr->data;
> _mesa_DepthFunc(depth->Func);
> - _mesa_ClearDepth(depth->Clear);
> + /* The ...NV variant is guaranteed not to clamp */
> + /* what was not clamped before. */
> + _mesa_ClearDepthdNV(depth->Clear);
> _mesa_set_enable(ctx, GL_DEPTH_TEST, depth->Test);
> _mesa_DepthMask(depth->Mask);
> }
> @@ -1364,7 +1366,7 @@ _mesa_PopAttrib(void)
> for (i = 0; i < ctx->Const.MaxViewports; i++) {
> _mesa_set_viewport(ctx, i, vp[i].X, vp[i].Y, vp[i].Width,
> vp[i].Height);
> - _mesa_set_depth_range(ctx, i, vp[i].Near, vp[i].Far);
> + _mesa_set_depth_range(ctx, i, vp[i].Near, vp[i].Far, GL_FALSE);
> }
> }
> break;
> diff --git a/src/mesa/main/depth.c b/src/mesa/main/depth.c
> index 29851ec..e18ff85 100644
> --- a/src/mesa/main/depth.c
> +++ b/src/mesa/main/depth.c
> @@ -32,30 +32,69 @@
> #include "mtypes.h"
>
>
> +static void
> +set_clear_depth( struct gl_context *ctx, const char* fcn,
> + GLdouble depth, GLboolean clamp )
> +{
> + if (MESA_VERBOSE & VERBOSE_API)
> + _mesa_debug(ctx, "%s(%f)\n", fcn, depth);
> +
> + if (clamp)
> + depth = CLAMP( depth, 0.0, 1.0 );
> +
> + ctx->Depth.Clear = depth;
> +}
> +
> +static void
> +set_depth_bounds( struct gl_context *ctx, const char* fcn,
> + GLdouble zmin, GLdouble zmax, GLboolean clamp )
> +{
> + if (MESA_VERBOSE & VERBOSE_API)
> + _mesa_debug(ctx, "%s(%f, %f)\n", fcn, zmin, zmax);
> +
> + if (zmin > zmax) {
> + _mesa_error(ctx, GL_INVALID_VALUE, "%s(zmin > zmax)", fcn);
> + return;
> + }
> +
> + if (clamp) {
> + zmin = CLAMP(zmin, 0.0, 1.0);
> + zmax = CLAMP(zmax, 0.0, 1.0);
> + }
> +
> + if (ctx->Depth.BoundsMin == zmin && ctx->Depth.BoundsMax == zmax)
> + return;
> +
> + FLUSH_VERTICES(ctx, _NEW_DEPTH);
> + ctx->Depth.BoundsMin = (GLfloat) zmin;
> + ctx->Depth.BoundsMax = (GLfloat) zmax;
> +}
> +
> /**********************************************************************/
> /***** API Functions *****/
> /**********************************************************************/
>
> -
> -
> void GLAPIENTRY
> _mesa_ClearDepth( GLclampd depth )
> {
> GET_CURRENT_CONTEXT(ctx);
> -
> - if (MESA_VERBOSE & VERBOSE_API)
> - _mesa_debug(ctx, "glClearDepth(%f)\n", depth);
> -
> - ctx->Depth.Clear = CLAMP( depth, 0.0, 1.0 );
> + set_clear_depth(ctx, "glClearDepth", depth, GL_TRUE);
> }
>
>
> void GLAPIENTRY
> _mesa_ClearDepthf( GLclampf depth )
> {
> - _mesa_ClearDepth(depth);
> + GET_CURRENT_CONTEXT(ctx);
> + set_clear_depth(ctx, "glClearDepthf", depth, GL_TRUE);
> }
>
> +void GLAPIENTRY
> +_mesa_ClearDepthdNV( GLdouble depth )
> +{
> + GET_CURRENT_CONTEXT(ctx);
> + set_clear_depth(ctx, "glClearDepthdNV", depth, GL_FALSE);
> +}
>
> void GLAPIENTRY
> _mesa_DepthFunc( GLenum func )
> @@ -123,27 +162,20 @@ void GLAPIENTRY
> _mesa_DepthBoundsEXT( GLclampd zmin, GLclampd zmax )
> {
> GET_CURRENT_CONTEXT(ctx);
> + set_depth_bounds(ctx, "glDepthBoundsEXT", zmin, zmax, GL_TRUE);
> +}
>
> - if (MESA_VERBOSE & VERBOSE_API)
> - _mesa_debug(ctx, "glDepthBounds(%f, %f)\n", zmin, zmax);
> -
> - if (zmin > zmax) {
> - _mesa_error(ctx, GL_INVALID_VALUE, "glDepthBoundsEXT(zmin > zmax)");
> - return;
> - }
> -
> - zmin = CLAMP(zmin, 0.0, 1.0);
> - zmax = CLAMP(zmax, 0.0, 1.0);
> -
> - if (ctx->Depth.BoundsMin == zmin && ctx->Depth.BoundsMax == zmax)
> - return;
>
> - FLUSH_VERTICES(ctx, _NEW_DEPTH);
> - ctx->Depth.BoundsMin = (GLfloat) zmin;
> - ctx->Depth.BoundsMax = (GLfloat) zmax;
> +/**
> + * Specified by the NV_depth_buffer_float extension.
> + */
> +void GLAPIENTRY
> +_mesa_DepthBoundsdNV( GLdouble zmin, GLdouble zmax )
> +{
> + GET_CURRENT_CONTEXT(ctx);
> + set_depth_bounds(ctx, "glDepthBoundsdNV", zmin, zmax, GL_FALSE);
> }
>
> -
> /**********************************************************************/
> /***** Initialization *****/
> /**********************************************************************/
> diff --git a/src/mesa/main/depth.h b/src/mesa/main/depth.h
> index 5ff7a5e..f213012 100644
> --- a/src/mesa/main/depth.h
> +++ b/src/mesa/main/depth.h
> @@ -44,6 +44,9 @@ extern void GLAPIENTRY
> _mesa_ClearDepthf( GLclampf depth );
>
> extern void GLAPIENTRY
> +_mesa_ClearDepthdNV( GLdouble depth );
> +
> +extern void GLAPIENTRY
> _mesa_DepthFunc( GLenum func );
>
> extern void GLAPIENTRY
> @@ -52,6 +55,9 @@ _mesa_DepthMask( GLboolean flag );
> extern void GLAPIENTRY
> _mesa_DepthBoundsEXT( GLclampd zmin, GLclampd zmax );
>
> +extern void GLAPIENTRY
> +_mesa_DepthBoundsdNV( GLdouble zmin, GLdouble zmax );
> +
> extern void
> _mesa_init_depth( struct gl_context * ctx );
>
> diff --git a/src/mesa/main/dlist.c b/src/mesa/main/dlist.c
> index 5c7160d..2e98045 100644
> --- a/src/mesa/main/dlist.c
> +++ b/src/mesa/main/dlist.c
> @@ -40,6 +40,7 @@
> #include "bufferobj.h"
> #include "arrayobj.h"
> #include "context.h"
> +#include "depth.h"
> #include "dlist.h"
> #include "enums.h"
> #include "eval.h"
> @@ -308,6 +309,10 @@ typedef enum
> OPCODE_ACTIVE_STENCIL_FACE_EXT,
> /* GL_EXT_depth_bounds_test */
> OPCODE_DEPTH_BOUNDS_EXT,
> + /* GL_NV_depth_buffer_float */
> + OPCODE_DEPTH_RANGE_NV,
> + OPCODE_CLEAR_DEPTH_NV,
> + OPCODE_DEPTH_BOUNDS_NV,
> /* GL_ARB_vertex/fragment_program */
> OPCODE_PROGRAM_STRING_ARB,
> OPCODE_PROGRAM_ENV_PARAMETER_ARB,
> @@ -4843,6 +4848,54 @@ save_DepthBoundsEXT(GLclampd zmin, GLclampd zmax)
> }
>
>
> +/* NV_depth_buffer_float */
> +static void GLAPIENTRY
> +save_DepthRangedNV(GLdouble near, GLdouble far)
> +{
> + GET_CURRENT_CONTEXT(ctx);
> + Node *n;
> + ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
> + n = alloc_instruction(ctx, OPCODE_DEPTH_RANGE_NV, 2);
> + if (n) {
> + n[1].f = near;
> + n[2].f = far;
> + }
> + if (ctx->ExecuteFlag) {
> + CALL_DepthRangedNV(ctx->Exec, (near, far));
> + }
> +}
> +
> +static void GLAPIENTRY
> +save_ClearDepthdNV(GLdouble d)
> +{
> + GET_CURRENT_CONTEXT(ctx);
> + Node *n;
> + ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
> + n = alloc_instruction(ctx, OPCODE_CLEAR_DEPTH_NV, 1);
> + if (n) {
> + n[1].f = d;
> + }
> + if (ctx->ExecuteFlag) {
> + CALL_ClearDepthdNV(ctx->Exec, (d));
> + }
> +}
> +
> +static void GLAPIENTRY
> +save_DepthBoundsdNV(GLdouble zmin, GLdouble zmax)
> +{
> + GET_CURRENT_CONTEXT(ctx);
> + Node *n;
> + ASSERT_OUTSIDE_SAVE_BEGIN_END_AND_FLUSH(ctx);
> + n = alloc_instruction(ctx, OPCODE_DEPTH_BOUNDS_NV, 2);
> + if (n) {
> + n[1].f = zmin;
> + n[2].f = zmax;
> + }
> + if (ctx->ExecuteFlag) {
> + CALL_DepthBoundsdNV(ctx->Exec, (zmin, zmax));
> + }
> +}
> +
>
> static void GLAPIENTRY
> save_ProgramStringARB(GLenum target, GLenum format, GLsizei len,
> @@ -8317,6 +8370,15 @@ execute_list(struct gl_context *ctx, GLuint list)
> case OPCODE_DEPTH_BOUNDS_EXT:
> CALL_DepthBoundsEXT(ctx->Exec, (n[1].f, n[2].f));
> break;
> + case OPCODE_DEPTH_RANGE_NV:
> + CALL_DepthRangedNV(ctx->Exec, (n[1].f, n[2].f));
> + break;
> + case OPCODE_CLEAR_DEPTH_NV:
> + CALL_ClearDepthdNV(ctx->Exec, (n[1].f));
> + break;
> + case OPCODE_DEPTH_BOUNDS_NV:
> + CALL_DepthBoundsdNV(ctx->Exec, (n[1].f, n[2].f));
> + break;
> case OPCODE_PROGRAM_STRING_ARB:
> CALL_ProgramStringARB(ctx->Exec,
> (n[1].e, n[2].e, n[3].i,
> @@ -9460,6 +9522,11 @@ _mesa_initialize_save_table(const struct gl_context *ctx)
> /* ???. GL_EXT_depth_bounds_test */
> SET_DepthBoundsEXT(table, save_DepthBoundsEXT);
>
> + /* ???. GL_NV_depth_buffer_float */
> + SET_DepthRangedNV(table, save_DepthRangedNV);
> + SET_ClearDepthdNV(table, save_ClearDepthdNV);
> + SET_DepthBoundsdNV(table, save_DepthBoundsdNV);
> +
> /* ARB 1. GL_ARB_multitexture */
> SET_ActiveTexture(table, save_ActiveTextureARB);
>
> diff --git a/src/mesa/main/extensions.c b/src/mesa/main/extensions.c
> index 553c01e..b5ce04f 100644
> --- a/src/mesa/main/extensions.c
> +++ b/src/mesa/main/extensions.c
> @@ -353,6 +353,7 @@ static const struct extension extension_table[] = {
> { "GL_MESA_ycbcr_texture", o(MESA_ycbcr_texture), GL, 2002 },
> { "GL_NV_blend_square", o(dummy_true), GLL, 1999 },
> { "GL_NV_conditional_render", o(NV_conditional_render), GL, 2008 },
> + { "GL_NV_depth_buffer_float", o(ARB_depth_buffer_float), GL, 2008 },
> { "GL_NV_depth_clamp", o(ARB_depth_clamp), GL, 2001 },
> { "GL_NV_draw_buffers", o(dummy_true), ES2, 2011 },
> { "GL_NV_fbo_color_attachments", o(dummy_true), ES2, 2010 },
> diff --git a/src/mesa/main/viewport.c b/src/mesa/main/viewport.c
> index 6545bf6..f8f78c8 100644
> --- a/src/mesa/main/viewport.c
> +++ b/src/mesa/main/viewport.c
> @@ -240,14 +240,19 @@ _mesa_ViewportIndexedfv(GLuint index, const GLfloat *v)
>
> static void
> set_depth_range_no_notify(struct gl_context *ctx, unsigned idx,
> - GLclampd nearval, GLclampd farval)
> + GLclampd nearval, GLclampd farval, GLboolean clamp)
> {
> + if (clamp) {
> + nearval = CLAMP(nearval, 0.0, 1.0);
> + farval = CLAMP(farval, 0.0, 1.0);
> + }
> +
> if (ctx->ViewportArray[idx].Near == nearval &&
> ctx->ViewportArray[idx].Far == farval)
> return;
>
> - ctx->ViewportArray[idx].Near = CLAMP(nearval, 0.0, 1.0);
> - ctx->ViewportArray[idx].Far = CLAMP(farval, 0.0, 1.0);
> + ctx->ViewportArray[idx].Near = nearval;
> + ctx->ViewportArray[idx].Far = farval;
> ctx->NewState |= _NEW_VIEWPORT;
>
> #if 1
> @@ -268,32 +273,19 @@ set_depth_range_no_notify(struct gl_context *ctx, unsigned idx,
>
> void
> _mesa_set_depth_range(struct gl_context *ctx, unsigned idx,
> - GLclampd nearval, GLclampd farval)
> + GLdouble nearval, GLdouble farval, GLboolean clamp)
> {
> - set_depth_range_no_notify(ctx, idx, nearval, farval);
> + set_depth_range_no_notify(ctx, idx, nearval, farval, clamp);
>
> if (ctx->Driver.DepthRange)
> ctx->Driver.DepthRange(ctx);
> }
>
> -/**
> - * Called by glDepthRange
> - *
> - * \param nearval specifies the Z buffer value which should correspond to
> - * the near clip plane
> - * \param farval specifies the Z buffer value which should correspond to
> - * the far clip plane
> - */
> -void GLAPIENTRY
> -_mesa_DepthRange(GLclampd nearval, GLclampd farval)
> +void
> +_mesa_set_all_depth_range(struct gl_context *ctx,
> + GLdouble nearval, GLdouble farval, GLboolean clamp)
> {
> unsigned i;
> - GET_CURRENT_CONTEXT(ctx);
> -
> - FLUSH_VERTICES(ctx, 0);
> -
> - if (MESA_VERBOSE&VERBOSE_API)
> - _mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
>
> /* The GL_ARB_viewport_array spec says:
> *
> @@ -307,11 +299,31 @@ _mesa_DepthRange(GLclampd nearval, GLclampd farval)
> * implementation, but only signal the driver once at the end.
> */
> for (i = 0; i < ctx->Const.MaxViewports; i++)
> - set_depth_range_no_notify(ctx, i, nearval, farval);
> + set_depth_range_no_notify(ctx, i, nearval, farval, clamp);
>
> - if (ctx->Driver.DepthRange) {
> + if (ctx->Driver.DepthRange)
> ctx->Driver.DepthRange(ctx);
> - }
> +}
> +
> +/**
> + * Called by glDepthRange
> + *
> + * \param nearval specifies the Z buffer value which should correspond to
> + * the near clip plane
> + * \param farval specifies the Z buffer value which should correspond to
> + * the far clip plane
> + */
> +void
> +_mesa_DepthRange(GLclampd nearval, GLclampd farval)
> +{
> + GET_CURRENT_CONTEXT(ctx);
> +
> + FLUSH_VERTICES(ctx, 0);
> +
> + if (MESA_VERBOSE&VERBOSE_API)
> + _mesa_debug(ctx, "glDepthRange %f %f\n", nearval, farval);
> +
> + _mesa_set_all_depth_range(ctx, nearval, farval, GL_TRUE);
> }
>
> void GLAPIENTRY
> @@ -320,6 +332,19 @@ _mesa_DepthRangef(GLclampf nearval, GLclampf farval)
> _mesa_DepthRange(nearval, farval);
> }
>
> +void GLAPIENTRY
> +_mesa_DepthRangedNV(GLdouble nearval, GLdouble farval)
> +{
> + GET_CURRENT_CONTEXT(ctx);
> +
> + FLUSH_VERTICES(ctx, 0);
> +
> + if (MESA_VERBOSE&VERBOSE_API)
> + _mesa_debug(ctx, "glDepthRangeNV %f %f\n", nearval, farval);
> +
> + _mesa_set_all_depth_range(ctx, nearval, farval, GL_FALSE);
> +}
> +
> /**
> * Update a range DepthRange values
> *
> @@ -347,7 +372,7 @@ _mesa_DepthRangeArrayv(GLuint first, GLsizei count, const GLclampd *v)
> }
>
> for (i = 0; i < count; i++)
> - set_depth_range_no_notify(ctx, i + first, p[i].Near, p[i].Far);
> + set_depth_range_no_notify(ctx, i + first, p[i].Near, p[i].Far, GL_TRUE);
>
> if (ctx->Driver.DepthRange)
> ctx->Driver.DepthRange(ctx);
> @@ -378,7 +403,7 @@ _mesa_DepthRangeIndexed(GLuint index, GLclampd nearval, GLclampd farval)
> return;
> }
>
> - _mesa_set_depth_range(ctx, index, nearval, farval);
> + _mesa_set_depth_range(ctx, index, nearval, farval, GL_TRUE);
> }
>
> /**
> diff --git a/src/mesa/main/viewport.h b/src/mesa/main/viewport.h
> index f2311c0..140cfb4 100644
> --- a/src/mesa/main/viewport.h
> +++ b/src/mesa/main/viewport.h
> @@ -55,6 +55,9 @@ extern void GLAPIENTRY
> _mesa_DepthRangef(GLclampf nearval, GLclampf farval);
>
> extern void GLAPIENTRY
> +_mesa_DepthRangedNV(GLdouble nearval, GLdouble farval);
> +
> +extern void GLAPIENTRY
> _mesa_DepthRangeArrayv(GLuint first, GLsizei count, const GLclampd * v);
>
> extern void GLAPIENTRY
> @@ -62,7 +65,11 @@ _mesa_DepthRangeIndexed(GLuint index, GLclampd n, GLclampd f);
>
> extern void
> _mesa_set_depth_range(struct gl_context *ctx, unsigned idx,
> - GLclampd nearval, GLclampd farval);
> + GLdouble nearval, GLdouble farval, GLboolean clamp);
> +
> +extern void
> +_mesa_set_all_depth_range(struct gl_context *ctx,
> + GLdouble nearval, GLdouble farval, GLboolean clamp);
>
> extern void
> _mesa_init_viewport(struct gl_context *ctx);
>
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