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-rw-r--r--src/mesa/array_cache/ac_import.c902
1 files changed, 902 insertions, 0 deletions
diff --git a/src/mesa/array_cache/ac_import.c b/src/mesa/array_cache/ac_import.c
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index 00000000000..62206002cd3
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+++ b/src/mesa/array_cache/ac_import.c
@@ -0,0 +1,902 @@
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.5
+ *
+ * Copyright (C) 1999-2006 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"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of 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.
+ *
+ * Authors:
+ * Keith Whitwell <keith@tungstengraphics.com>
+ */
+
+#include "glheader.h"
+#include "macros.h"
+#include "imports.h"
+#include "mtypes.h"
+
+#include "math/m_translate.h"
+#include "array_cache/ac_context.h"
+#include "math/m_translate.h"
+
+#define STRIDE_ARRAY( array, offset ) \
+do { \
+ GLubyte *tmp = ADD_POINTERS( (array).BufferObj->Data, (array).Ptr ) \
+ + (offset) * (array).StrideB; \
+ (array).Ptr = tmp; \
+} while (0)
+
+
+/* Set the array pointer back to its source when the cached data is
+ * invalidated:
+ */
+static void
+reset_texcoord( GLcontext *ctx, GLuint unit )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.TexCoord[unit].Enabled) {
+ ac->Raw.TexCoord[unit] = ctx->Array.TexCoord[unit];
+ STRIDE_ARRAY(ac->Raw.TexCoord[unit], ac->start);
+ }
+ else {
+ ac->Raw.TexCoord[unit] = ac->Fallback.TexCoord[unit];
+
+ if (ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3] != 1.0)
+ ac->Raw.TexCoord[unit].Size = 4;
+ else if (ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2] != 0.0)
+ ac->Raw.TexCoord[unit].Size = 3;
+ else
+ ac->Raw.TexCoord[unit].Size = 2;
+ }
+
+ ac->IsCached.TexCoord[unit] = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_TEXCOORD(unit);
+}
+
+static void
+reset_vertex( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ ASSERT(ctx->Array.Vertex.Enabled
+ || (ctx->VertexProgram._Enabled && ctx->Array.VertexAttrib[0].Enabled));
+ ac->Raw.Vertex = ctx->Array.Vertex;
+ STRIDE_ARRAY(ac->Raw.Vertex, ac->start);
+ ac->IsCached.Vertex = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_VERTEX;
+}
+
+
+static void
+reset_normal( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.Normal.Enabled) {
+ ac->Raw.Normal = ctx->Array.Normal;
+ STRIDE_ARRAY(ac->Raw.Normal, ac->start);
+ }
+ else {
+ ac->Raw.Normal = ac->Fallback.Normal;
+ }
+
+ ac->IsCached.Normal = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_NORMAL;
+}
+
+
+static void
+reset_color( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.Color.Enabled) {
+ ac->Raw.Color = ctx->Array.Color;
+ STRIDE_ARRAY(ac->Raw.Color, ac->start);
+ }
+ else
+ ac->Raw.Color = ac->Fallback.Color;
+
+ ac->IsCached.Color = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_COLOR0;
+}
+
+
+static void
+reset_secondarycolor( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.SecondaryColor.Enabled) {
+ ac->Raw.SecondaryColor = ctx->Array.SecondaryColor;
+ STRIDE_ARRAY(ac->Raw.SecondaryColor, ac->start);
+ }
+ else
+ ac->Raw.SecondaryColor = ac->Fallback.SecondaryColor;
+
+ ac->IsCached.SecondaryColor = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_COLOR1;
+}
+
+
+static void
+reset_index( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.Index.Enabled) {
+ ac->Raw.Index = ctx->Array.Index;
+ STRIDE_ARRAY(ac->Raw.Index, ac->start);
+ }
+ else
+ ac->Raw.Index = ac->Fallback.Index;
+
+ ac->IsCached.Index = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_INDEX;
+}
+
+
+static void
+reset_fogcoord( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.FogCoord.Enabled) {
+ ac->Raw.FogCoord = ctx->Array.FogCoord;
+ STRIDE_ARRAY(ac->Raw.FogCoord, ac->start);
+ }
+ else
+ ac->Raw.FogCoord = ac->Fallback.FogCoord;
+
+ ac->IsCached.FogCoord = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_FOGCOORD;
+}
+
+
+static void
+reset_edgeflag( GLcontext *ctx )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.EdgeFlag.Enabled) {
+ ac->Raw.EdgeFlag = ctx->Array.EdgeFlag;
+ STRIDE_ARRAY(ac->Raw.EdgeFlag, ac->start);
+ }
+ else
+ ac->Raw.EdgeFlag = ac->Fallback.EdgeFlag;
+
+ ac->IsCached.EdgeFlag = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_EDGEFLAG;
+}
+
+
+static void
+reset_attrib( GLcontext *ctx, GLuint index )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (ctx->Array.VertexAttrib[index].Enabled) {
+ ac->Raw.Attrib[index] = ctx->Array.VertexAttrib[index];
+ STRIDE_ARRAY(ac->Raw.Attrib[index], ac->start);
+ }
+ else
+ ac->Raw.Attrib[index] = ac->Fallback.Attrib[index];
+
+ ac->IsCached.Attrib[index] = GL_FALSE;
+ ac->NewArrayState &= ~_NEW_ARRAY_ATTRIB(index);
+}
+
+
+/**
+ * Generic import function for color data
+ */
+static void
+import( const GLcontext *ctx,
+ GLenum destType,
+ struct gl_client_array *to,
+ const struct gl_client_array *from )
+{
+ const ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (destType == 0)
+ destType = from->Type;
+
+ switch (destType) {
+ case GL_FLOAT:
+ _math_trans_4fc( (GLfloat (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = 4 * sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ break;
+
+ case GL_UNSIGNED_BYTE:
+ _math_trans_4ub( (GLubyte (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = 4 * sizeof(GLubyte);
+ to->Type = GL_UNSIGNED_BYTE;
+ break;
+
+ case GL_UNSIGNED_SHORT:
+ _math_trans_4us( (GLushort (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = 4 * sizeof(GLushort);
+ to->Type = GL_UNSIGNED_SHORT;
+ break;
+
+ default:
+ _mesa_problem(ctx, "Unexpected dest format in import()");
+ break;
+ }
+}
+
+
+
+/*
+ * Functions to import array ranges with specified types and strides.
+ * For example, if the vertex data is GLshort[2] and we want GLfloat[3]
+ * we'll use an import function to do the data conversion.
+ */
+
+static void
+import_texcoord( GLcontext *ctx, GLuint unit, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.TexCoord[unit];
+ struct gl_client_array *to = &ac->Cache.TexCoord[unit];
+ (void) type; (void) stride;
+
+ ASSERT(unit < ctx->Const.MaxTextureCoordUnits);
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_FLOAT);
+ ASSERT(stride == 4*sizeof(GLfloat) || stride == 0);
+ ASSERT(ac->count - ac->start < ctx->Const.MaxArrayLockSize);
+
+ _math_trans_4f( (GLfloat (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->Size = from->Size;
+ to->StrideB = 4 * sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ ac->IsCached.TexCoord[unit] = GL_TRUE;
+}
+
+static void
+import_vertex( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.Vertex;
+ struct gl_client_array *to = &ac->Cache.Vertex;
+ (void) type; (void) stride;
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_FLOAT);
+ ASSERT(stride == 4*sizeof(GLfloat) || stride == 0);
+
+ _math_trans_4f( (GLfloat (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->Size = from->Size;
+ to->StrideB = 4 * sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ ac->IsCached.Vertex = GL_TRUE;
+}
+
+static void
+import_normal( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.Normal;
+ struct gl_client_array *to = &ac->Cache.Normal;
+ (void) type; (void) stride;
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_FLOAT);
+ ASSERT(stride == 3*sizeof(GLfloat) || stride == 0);
+
+ _math_trans_3f( (GLfloat (*)[3]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = 3 * sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ ac->IsCached.Normal = GL_TRUE;
+}
+
+static void
+import_color( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.Color;
+ struct gl_client_array *to = &ac->Cache.Color;
+ (void) stride;
+
+ import( ctx, type, to, from );
+
+ ac->IsCached.Color = GL_TRUE;
+}
+
+static void
+import_index( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.Index;
+ struct gl_client_array *to = &ac->Cache.Index;
+ (void) type; (void) stride;
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_UNSIGNED_INT);
+ ASSERT(stride == sizeof(GLuint) || stride == 0);
+
+ _math_trans_1ui( (GLuint *) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = sizeof(GLuint);
+ to->Type = GL_UNSIGNED_INT;
+ ac->IsCached.Index = GL_TRUE;
+}
+
+static void
+import_secondarycolor( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.SecondaryColor;
+ struct gl_client_array *to = &ac->Cache.SecondaryColor;
+ (void) stride;
+
+ import( ctx, type, to, from );
+
+ ac->IsCached.SecondaryColor = GL_TRUE;
+}
+
+static void
+import_fogcoord( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.FogCoord;
+ struct gl_client_array *to = &ac->Cache.FogCoord;
+ (void) type; (void) stride;
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_FLOAT);
+ ASSERT(stride == sizeof(GLfloat) || stride == 0);
+
+ _math_trans_1f( (GLfloat *) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ ac->IsCached.FogCoord = GL_TRUE;
+}
+
+static void
+import_edgeflag( GLcontext *ctx, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.EdgeFlag;
+ struct gl_client_array *to = &ac->Cache.EdgeFlag;
+ (void) type; (void) stride;
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_UNSIGNED_BYTE);
+ ASSERT(stride == sizeof(GLubyte) || stride == 0);
+
+ _math_trans_1ub( (GLubyte *) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ 0,
+ ac->count - ac->start);
+
+ to->StrideB = sizeof(GLubyte);
+ to->Type = GL_UNSIGNED_BYTE;
+ ac->IsCached.EdgeFlag = GL_TRUE;
+}
+
+static void
+import_attrib( GLcontext *ctx, GLuint index, GLenum type, GLuint stride )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+ const struct gl_client_array *from = &ac->Raw.Attrib[index];
+ struct gl_client_array *to = &ac->Cache.Attrib[index];
+ (void) type; (void) stride;
+
+ ASSERT(index < MAX_VERTEX_PROGRAM_ATTRIBS);
+
+ /* Limited choices at this stage:
+ */
+ ASSERT(type == GL_FLOAT);
+ ASSERT(stride == 4*sizeof(GLfloat) || stride == 0);
+ ASSERT(ac->count - ac->start < ctx->Const.MaxArrayLockSize);
+
+ _math_trans_4f( (GLfloat (*)[4]) to->Ptr,
+ from->Ptr,
+ from->StrideB,
+ from->Type,
+ from->Size,
+ 0,
+ ac->count - ac->start);
+
+ to->Size = from->Size;
+ to->StrideB = 4 * sizeof(GLfloat);
+ to->Type = GL_FLOAT;
+ ac->IsCached.Attrib[index] = GL_TRUE;
+}
+
+
+
+/*
+ * Externals to request arrays with specific properties:
+ */
+
+
+struct gl_client_array *
+_ac_import_texcoord( GLcontext *ctx,
+ GLuint unit,
+ GLenum type,
+ GLuint reqstride,
+ GLuint reqsize,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ ASSERT(unit < MAX_TEXTURE_COORD_UNITS);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_TEXCOORD(unit))
+ reset_texcoord( ctx, unit );
+
+ /* Is the request impossible?
+ */
+ if (reqsize != 0 && ac->Raw.TexCoord[unit].Size > (GLint) reqsize)
+ return NULL;
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.TexCoord[unit].Type != type ||
+ (reqstride != 0 && ac->Raw.TexCoord[unit].StrideB != (GLint)reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.TexCoord[unit])
+ import_texcoord(ctx, unit, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.TexCoord[unit];
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.TexCoord[unit];
+ }
+}
+
+struct gl_client_array *
+_ac_import_vertex( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLuint reqsize,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_VERTEX)
+ reset_vertex( ctx );
+
+ /* Is the request impossible?
+ */
+ if (reqsize != 0 && ac->Raw.Vertex.Size > (GLint) reqsize)
+ return NULL;
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.Vertex.Type != type ||
+ (reqstride != 0 && ac->Raw.Vertex.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.Vertex)
+ import_vertex(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.Vertex;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.Vertex;
+ }
+}
+
+struct gl_client_array *
+_ac_import_normal( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_NORMAL)
+ reset_normal( ctx );
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.Normal.Type != type ||
+ (reqstride != 0 && ac->Raw.Normal.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.Normal)
+ import_normal(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.Normal;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.Normal;
+ }
+}
+
+struct gl_client_array *
+_ac_import_color( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLuint reqsize,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_COLOR0)
+ reset_color( ctx );
+
+ /* Is the request impossible?
+ */
+ if (reqsize != 0 && ac->Raw.Color.Size > (GLint) reqsize) {
+ return NULL;
+ }
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if ((type != 0 && ac->Raw.Color.Type != type) ||
+ (reqstride != 0 && ac->Raw.Color.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.Color) {
+ import_color(ctx, type, reqstride );
+ }
+ *writeable = GL_TRUE;
+ return &ac->Cache.Color;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.Color;
+ }
+}
+
+struct gl_client_array *
+_ac_import_index( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_INDEX)
+ reset_index( ctx );
+
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.Index.Type != type ||
+ (reqstride != 0 && ac->Raw.Index.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.Index)
+ import_index(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.Index;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.Index;
+ }
+}
+
+struct gl_client_array *
+_ac_import_secondarycolor( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLuint reqsize,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_COLOR1)
+ reset_secondarycolor( ctx );
+
+ /* Is the request impossible?
+ */
+ if (reqsize != 0 && ac->Raw.SecondaryColor.Size > (GLint) reqsize)
+ return NULL;
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if ((type != 0 && ac->Raw.SecondaryColor.Type != type) ||
+ (reqstride != 0 && ac->Raw.SecondaryColor.StrideB != (GLint)reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.SecondaryColor)
+ import_secondarycolor(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.SecondaryColor;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.SecondaryColor;
+ }
+}
+
+struct gl_client_array *
+_ac_import_fogcoord( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_FOGCOORD)
+ reset_fogcoord( ctx );
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.FogCoord.Type != type ||
+ (reqstride != 0 && ac->Raw.FogCoord.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.FogCoord)
+ import_fogcoord(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.FogCoord;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.FogCoord;
+ }
+}
+
+struct gl_client_array *
+_ac_import_edgeflag( GLcontext *ctx,
+ GLenum type,
+ GLuint reqstride,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_EDGEFLAG)
+ reset_edgeflag( ctx );
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.EdgeFlag.Type != type ||
+ (reqstride != 0 && ac->Raw.EdgeFlag.StrideB != (GLint) reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.EdgeFlag)
+ import_edgeflag(ctx, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.EdgeFlag;
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.EdgeFlag;
+ }
+}
+
+/* GL_NV_vertex_program */
+struct gl_client_array *
+_ac_import_attrib( GLcontext *ctx,
+ GLuint index,
+ GLenum type,
+ GLuint reqstride,
+ GLuint reqsize,
+ GLboolean reqwriteable,
+ GLboolean *writeable )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ ASSERT(index < VERT_ATTRIB_MAX);
+
+ /* Can we keep the existing version?
+ */
+ if (ac->NewArrayState & _NEW_ARRAY_ATTRIB(index))
+ reset_attrib( ctx, index );
+
+ /* Is the request impossible?
+ */
+ if (reqsize != 0 && ac->Raw.Attrib[index].Size > (GLint) reqsize)
+ return NULL;
+
+ /* Do we need to pull in a copy of the client data:
+ */
+ if (ac->Raw.Attrib[index].Type != type ||
+ (reqstride != 0 && ac->Raw.Attrib[index].StrideB != (GLint)reqstride) ||
+ reqwriteable)
+ {
+ if (!ac->IsCached.Attrib[index])
+ import_attrib(ctx, index, type, reqstride );
+ *writeable = GL_TRUE;
+ return &ac->Cache.Attrib[index];
+ }
+ else {
+ *writeable = GL_FALSE;
+ return &ac->Raw.Attrib[index];
+ }
+}
+
+
+/* Clients must call this function to validate state and set bounds
+ * before importing any data:
+ */
+void
+_ac_import_range( GLcontext *ctx, GLuint start, GLuint count )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (!ctx->Array.LockCount) {
+ /* Not locked, discard cached data. Changes to lock
+ * status are caught via. _ac_invalidate_state().
+ */
+ ac->NewArrayState = _NEW_ARRAY_ALL;
+ ac->start = start;
+ ac->count = count;
+ }
+ else {
+ /* Locked, discard data for any disabled arrays. Require that
+ * the whole locked range always be dealt with, otherwise hard to
+ * maintain cached data in the face of clipping.
+ */
+ ac->NewArrayState |= ~ctx->Array._Enabled;
+ ac->start = ctx->Array.LockFirst;
+ ac->count = ctx->Array.LockCount;
+ ASSERT(ac->start == start); /* hmm? */
+ ASSERT(ac->count == count);
+ }
+}
+
+
+
+/* Additional convienence function for importing the element list
+ * for glDrawElements() and glDrawRangeElements().
+ */
+CONST void *
+_ac_import_elements( GLcontext *ctx,
+ GLenum new_type,
+ GLuint count,
+ GLenum old_type,
+ CONST void *indices )
+{
+ ACcontext *ac = AC_CONTEXT(ctx);
+
+ if (old_type == new_type)
+ return indices;
+
+ if (ac->elt_size < count * sizeof(GLuint)) {
+ if (ac->Elts) FREE(ac->Elts);
+ while (ac->elt_size < count * sizeof(GLuint))
+ ac->elt_size *= 2;
+ ac->Elts = (GLuint *) MALLOC(ac->elt_size);
+ }
+
+ switch (new_type) {
+ case GL_UNSIGNED_BYTE:
+ ASSERT(0);
+ return NULL;
+ case GL_UNSIGNED_SHORT:
+ ASSERT(0);
+ return NULL;
+ case GL_UNSIGNED_INT: {
+ GLuint *out = (GLuint *)ac->Elts;
+ GLuint i;
+
+ switch (old_type) {
+ case GL_UNSIGNED_BYTE: {
+ CONST GLubyte *in = (CONST GLubyte *)indices;
+ for (i = 0 ; i < count ; i++)
+ out[i] = in[i];
+ break;
+ }
+ case GL_UNSIGNED_SHORT: {
+ CONST GLushort *in = (CONST GLushort *)indices;
+ for (i = 0 ; i < count ; i++)
+ out[i] = in[i];
+ break;
+ }
+ default:
+ ASSERT(0);
+ }
+
+ return (CONST void *)out;
+ }
+ default:
+ ASSERT(0);
+ break;
+ }
+
+ return NULL;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-11 13:47:34 +0000