-/* $Id: context.c,v 1.30 1999/12/17 17:00:32 brianp Exp $ */
+/* $Id: context.c,v 1.31 2000/01/14 04:45:47 brianp Exp $ */
/*
* Mesa 3-D graphics library
+/**********************************************************************/
+/***** GL Visual allocation/destruction *****/
+/**********************************************************************/
+
+
+/*
+ * Allocate a new GLvisual object.
+ * Input: rgbFlag - GL_TRUE=RGB(A) mode, GL_FALSE=Color Index mode
+ * alphaFlag - alloc software alpha buffers?
+ * dbFlag - double buffering?
+ * stereoFlag - stereo buffer?
+ * depthFits - requested minimum bits per depth buffer value
+ * stencilFits - requested minimum bits per stencil buffer value
+ * accumFits - requested minimum bits per accum buffer component
+ * indexFits - number of bits per pixel if rgbFlag==GL_FALSE
+ * red/green/blue/alphaFits - number of bits per color component
+ * in frame buffer for RGB(A) mode.
+ * Return: pointer to new GLvisual or NULL if requested parameters can't
+ * be met.
+ */
+GLvisual *gl_create_visual( GLboolean rgbFlag,
+ GLboolean alphaFlag,
+ GLboolean dbFlag,
+ GLboolean stereoFlag,
+ GLint depthBits,
+ GLint stencilBits,
+ GLint accumBits,
+ GLint indexBits,
+ GLint redBits,
+ GLint greenBits,
+ GLint blueBits,
+ GLint alphaBits )
+{
+ GLvisual *vis;
+
+ if (depthBits > (GLint) (8*sizeof(GLdepth))) {
+ /* can't meet depth buffer requirements */
+ return NULL;
+ }
+ if (stencilBits > (GLint) (8*sizeof(GLstencil))) {
+ /* can't meet stencil buffer requirements */
+ return NULL;
+ }
+ if (accumBits > (GLint) (8*sizeof(GLaccum))) {
+ /* can't meet accum buffer requirements */
+ return NULL;
+ }
+
+ vis = (GLvisual *) CALLOC( sizeof(GLvisual) );
+ if (!vis) {
+ return NULL;
+ }
+
+ vis->RGBAflag = rgbFlag;
+ vis->DBflag = dbFlag;
+ vis->StereoFlag = stereoFlag;
+ vis->RedBits = redBits;
+ vis->GreenBits = greenBits;
+ vis->BlueBits = blueBits;
+ vis->AlphaBits = alphaFlag ? 8*sizeof(GLubyte) : alphaBits;
+
+ vis->IndexBits = indexBits;
+ vis->DepthBits = (depthBits>0) ? 8*sizeof(GLdepth) : 0;
+ vis->AccumBits = (accumBits>0) ? 8*sizeof(GLaccum) : 0;
+ vis->StencilBits = (stencilBits>0) ? 8*sizeof(GLstencil) : 0;
+
+ vis->SoftwareAlpha = alphaFlag;
+
+ return vis;
+}
+
+
+
+void gl_destroy_visual( GLvisual *vis )
+{
+ FREE( vis );
+}
+
+
+
+/**********************************************************************/
+/***** GL Framebuffer allocation/destruction *****/
+/**********************************************************************/
+
+
+/*
+ * Create a new framebuffer. A GLframebuffer is a struct which
+ * encapsulates the depth, stencil and accum buffers and related
+ * parameters.
+ * Input: visual - a GLvisual pointer
+ * softwareDepth - create/use a software depth buffer?
+ * softwareStencil - create/use a software stencil buffer?
+ * softwareAccum - create/use a software accum buffer?
+ * softwareAlpha - create/use a software alpha buffer?
+
+ * Return: pointer to new GLframebuffer struct or NULL if error.
+ */
+GLframebuffer *gl_create_framebuffer( GLvisual *visual,
+ GLboolean softwareDepth,
+ GLboolean softwareStencil,
+ GLboolean softwareAccum,
+ GLboolean softwareAlpha )
+{
+ GLframebuffer *buffer;
+
+ buffer = CALLOC_STRUCT(gl_frame_buffer);
+ if (!buffer) {
+ return NULL;
+ }
+
+ /* sanity checks */
+ if (softwareDepth ) {
+ assert(visual->DepthBits > 0);
+ }
+ if (softwareStencil) {
+ assert(visual->StencilBits > 0);
+ }
+ if (softwareAccum) {
+ assert(visual->RGBAflag);
+ assert(visual->AccumBits > 0);
+ }
+ if (softwareAlpha) {
+ assert(visual->RGBAflag);
+ assert(visual->AlphaBits > 0);
+ }
+
+ buffer->Visual = visual;
+ buffer->UseSoftwareDepthBuffer = softwareDepth;
+ buffer->UseSoftwareStencilBuffer = softwareStencil;
+ buffer->UseSoftwareAccumBuffer = softwareAccum;
+ buffer->UseSoftwareAlphaBuffers = softwareAlpha;
+
+ return buffer;
+}
+
+
+
+/*
+ * Free a framebuffer struct and its buffers.
+ */
+void gl_destroy_framebuffer( GLframebuffer *buffer )
+{
+ if (buffer) {
+ if (buffer->Depth) {
+ FREE( buffer->Depth );
+ }
+ if (buffer->Accum) {
+ FREE( buffer->Accum );
+ }
+ if (buffer->Stencil) {
+ FREE( buffer->Stencil );
+ }
+ if (buffer->FrontLeftAlpha) {
+ FREE( buffer->FrontLeftAlpha );
+ }
+ if (buffer->BackLeftAlpha) {
+ FREE( buffer->BackLeftAlpha );
+ }
+ if (buffer->FrontRightAlpha) {
+ FREE( buffer->FrontRightAlpha );
+ }
+ if (buffer->BackRightAlpha) {
+ FREE( buffer->BackRightAlpha );
+ }
+ FREE(buffer);
+ }
+}
+
+
+
/**********************************************************************/
/***** Context allocation, initialization, destroying *****/
/**********************************************************************/
{
static GLboolean alreadyCalled = GL_FALSE;
if (!alreadyCalled) {
+ /* do some implementation tests */
+ assert( sizeof(GLbyte) == 1 );
+ assert( sizeof(GLshort) >= 2 );
+ assert( sizeof(GLint) >= 4 );
+ assert( sizeof(GLubyte) == 1 );
+ assert( sizeof(GLushort) >= 2 );
+ assert( sizeof(GLuint) >= 4 );
+
gl_init_clip();
gl_init_eval();
gl_init_fog();
}
+
/*
* Allocate and initialize a shared context state structure.
*/
-
-
-
/*
* Initialize the nth light. Note that the defaults for light 0 are
* different than the other lights.
cl->Enabled = 1;
}
+
/* Initialize a 1-D evaluator map */
static void init_1d_map( struct gl_1d_map *map, int n, const float *initial )
{
/*
- * Initialize a gl_context structure to default values.
+ * Initialize the attribute groups in a GLcontext.
*/
-static void initialize_context( GLcontext *ctx )
+static void init_attrib_groups( GLcontext *ctx )
{
GLuint i, j;
- if (ctx) {
- /* Constants, may be overriden by device driver */
- ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
- ctx->Const.MaxTextureSize = 1 << (MAX_TEXTURE_LEVELS - 1);
- ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS;
- ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE;
-
- /* Modelview matrix */
- gl_matrix_ctr( &ctx->ModelView );
- gl_matrix_alloc_inv( &ctx->ModelView );
-
- ctx->ModelViewStackDepth = 0;
- for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
- gl_matrix_ctr( &ctx->ModelViewStack[i] );
- gl_matrix_alloc_inv( &ctx->ModelViewStack[i] );
- }
-
- /* Projection matrix - need inv for user clipping in clip space*/
- gl_matrix_ctr( &ctx->ProjectionMatrix );
- gl_matrix_alloc_inv( &ctx->ProjectionMatrix );
-
- gl_matrix_ctr( &ctx->ModelProjectMatrix );
- gl_matrix_ctr( &ctx->ModelProjectWinMatrix );
- ctx->ModelProjectWinMatrixUptodate = GL_FALSE;
-
- ctx->ProjectionStackDepth = 0;
- ctx->NearFarStack[0][0] = 1.0; /* These values seem weird by make */
- ctx->NearFarStack[0][1] = 0.0; /* sense mathematically. */
-
- for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
- gl_matrix_ctr( &ctx->ProjectionStack[i] );
- gl_matrix_alloc_inv( &ctx->ProjectionStack[i] );
- }
-
- /* Texture matrix */
- for (i=0; i<MAX_TEXTURE_UNITS; i++) {
- gl_matrix_ctr( &ctx->TextureMatrix[i] );
- ctx->TextureStackDepth[i] = 0;
- for (j = 0 ; j < MAX_TEXTURE_STACK_DEPTH ; j++) {
- ctx->TextureStack[i][j].inv = 0;
- }
- }
-
- /* Accumulate buffer group */
- ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
-
- /* Color buffer group */
- ctx->Color.IndexMask = 0xffffffff;
- ctx->Color.ColorMask[0] = 0xff;
- ctx->Color.ColorMask[1] = 0xff;
- ctx->Color.ColorMask[2] = 0xff;
- ctx->Color.ColorMask[3] = 0xff;
- ctx->Color.SWmasking = GL_FALSE;
- ctx->Color.ClearIndex = 0;
- ASSIGN_4V( ctx->Color.ClearColor, 0.0, 0.0, 0.0, 0.0 );
- ctx->Color.DrawBuffer = GL_FRONT;
- ctx->Color.AlphaEnabled = GL_FALSE;
- ctx->Color.AlphaFunc = GL_ALWAYS;
- ctx->Color.AlphaRef = 0;
- ctx->Color.BlendEnabled = GL_FALSE;
- ctx->Color.BlendSrcRGB = GL_ONE;
- ctx->Color.BlendDstRGB = GL_ZERO;
- ctx->Color.BlendSrcA = GL_ONE;
- ctx->Color.BlendDstA = GL_ZERO;
- ctx->Color.BlendEquation = GL_FUNC_ADD_EXT;
- ctx->Color.BlendFunc = NULL; /* this pointer set only when needed */
- ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 );
- ctx->Color.IndexLogicOpEnabled = GL_FALSE;
- ctx->Color.ColorLogicOpEnabled = GL_FALSE;
- ctx->Color.SWLogicOpEnabled = GL_FALSE;
- ctx->Color.LogicOp = GL_COPY;
- ctx->Color.DitherFlag = GL_TRUE;
- ctx->Color.MultiDrawBuffer = GL_FALSE;
-
- /* Current group */
- ASSIGN_4V( ctx->Current.ByteColor, 255, 255, 255, 255);
- ctx->Current.Index = 1;
- for (i=0; i<MAX_TEXTURE_UNITS; i++)
- ASSIGN_4V( ctx->Current.Texcoord[i], 0.0, 0.0, 0.0, 1.0 );
- ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
- ctx->Current.RasterDistance = 0.0;
- ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
- ctx->Current.RasterIndex = 1;
- for (i=0; i<MAX_TEXTURE_UNITS; i++)
- ASSIGN_4V( ctx->Current.RasterMultiTexCoord[i], 0.0, 0.0, 0.0, 1.0 );
- ctx->Current.RasterTexCoord = ctx->Current.RasterMultiTexCoord[0];
- ctx->Current.RasterPosValid = GL_TRUE;
- ctx->Current.EdgeFlag = GL_TRUE;
- ASSIGN_3V( ctx->Current.Normal, 0.0, 0.0, 1.0 );
- ctx->Current.Primitive = (GLenum) (GL_POLYGON + 1);
-
- ctx->Current.Flag = (VERT_NORM|VERT_INDEX|VERT_RGBA|VERT_EDGE|
- VERT_TEX0_1|VERT_TEX1_1|VERT_MATERIAL);
-
- init_fallback_arrays( ctx );
-
- /* Depth buffer group */
- ctx->Depth.Test = GL_FALSE;
- ctx->Depth.Clear = 1.0;
- ctx->Depth.Func = GL_LESS;
- ctx->Depth.Mask = GL_TRUE;
-
- /* Evaluators group */
- ctx->Eval.Map1Color4 = GL_FALSE;
- ctx->Eval.Map1Index = GL_FALSE;
- ctx->Eval.Map1Normal = GL_FALSE;
- ctx->Eval.Map1TextureCoord1 = GL_FALSE;
- ctx->Eval.Map1TextureCoord2 = GL_FALSE;
- ctx->Eval.Map1TextureCoord3 = GL_FALSE;
- ctx->Eval.Map1TextureCoord4 = GL_FALSE;
- ctx->Eval.Map1Vertex3 = GL_FALSE;
- ctx->Eval.Map1Vertex4 = GL_FALSE;
- ctx->Eval.Map2Color4 = GL_FALSE;
- ctx->Eval.Map2Index = GL_FALSE;
- ctx->Eval.Map2Normal = GL_FALSE;
- ctx->Eval.Map2TextureCoord1 = GL_FALSE;
- ctx->Eval.Map2TextureCoord2 = GL_FALSE;
- ctx->Eval.Map2TextureCoord3 = GL_FALSE;
- ctx->Eval.Map2TextureCoord4 = GL_FALSE;
- ctx->Eval.Map2Vertex3 = GL_FALSE;
- ctx->Eval.Map2Vertex4 = GL_FALSE;
- ctx->Eval.AutoNormal = GL_FALSE;
- ctx->Eval.MapGrid1un = 1;
- ctx->Eval.MapGrid1u1 = 0.0;
- ctx->Eval.MapGrid1u2 = 1.0;
- ctx->Eval.MapGrid2un = 1;
- ctx->Eval.MapGrid2vn = 1;
- ctx->Eval.MapGrid2u1 = 0.0;
- ctx->Eval.MapGrid2u2 = 1.0;
- ctx->Eval.MapGrid2v1 = 0.0;
- ctx->Eval.MapGrid2v2 = 1.0;
-
- /* Evaluator data */
- {
- static GLfloat vertex[4] = { 0.0, 0.0, 0.0, 1.0 };
- static GLfloat normal[3] = { 0.0, 0.0, 1.0 };
- static GLfloat index[1] = { 1.0 };
- static GLfloat color[4] = { 1.0, 1.0, 1.0, 1.0 };
- static GLfloat texcoord[4] = { 0.0, 0.0, 0.0, 1.0 };
-
- init_1d_map( &ctx->EvalMap.Map1Vertex3, 3, vertex );
- init_1d_map( &ctx->EvalMap.Map1Vertex4, 4, vertex );
- init_1d_map( &ctx->EvalMap.Map1Index, 1, index );
- init_1d_map( &ctx->EvalMap.Map1Color4, 4, color );
- init_1d_map( &ctx->EvalMap.Map1Normal, 3, normal );
- init_1d_map( &ctx->EvalMap.Map1Texture1, 1, texcoord );
- init_1d_map( &ctx->EvalMap.Map1Texture2, 2, texcoord );
- init_1d_map( &ctx->EvalMap.Map1Texture3, 3, texcoord );
- init_1d_map( &ctx->EvalMap.Map1Texture4, 4, texcoord );
-
- init_2d_map( &ctx->EvalMap.Map2Vertex3, 3, vertex );
- init_2d_map( &ctx->EvalMap.Map2Vertex4, 4, vertex );
- init_2d_map( &ctx->EvalMap.Map2Index, 1, index );
- init_2d_map( &ctx->EvalMap.Map2Color4, 4, color );
- init_2d_map( &ctx->EvalMap.Map2Normal, 3, normal );
- init_2d_map( &ctx->EvalMap.Map2Texture1, 1, texcoord );
- init_2d_map( &ctx->EvalMap.Map2Texture2, 2, texcoord );
- init_2d_map( &ctx->EvalMap.Map2Texture3, 3, texcoord );
- init_2d_map( &ctx->EvalMap.Map2Texture4, 4, texcoord );
- }
-
- /* Fog group */
- ctx->Fog.Enabled = GL_FALSE;
- ctx->Fog.Mode = GL_EXP;
- ASSIGN_4V( ctx->Fog.Color, 0.0, 0.0, 0.0, 0.0 );
- ctx->Fog.Index = 0.0;
- ctx->Fog.Density = 1.0;
- ctx->Fog.Start = 0.0;
- ctx->Fog.End = 1.0;
-
- /* Hint group */
- ctx->Hint.PerspectiveCorrection = GL_DONT_CARE;
- ctx->Hint.PointSmooth = GL_DONT_CARE;
- ctx->Hint.LineSmooth = GL_DONT_CARE;
- ctx->Hint.PolygonSmooth = GL_DONT_CARE;
- ctx->Hint.Fog = GL_DONT_CARE;
-
- ctx->Hint.AllowDrawWin = GL_TRUE;
- ctx->Hint.AllowDrawSpn = GL_TRUE;
- ctx->Hint.AllowDrawMem = GL_TRUE;
- ctx->Hint.StrictLighting = GL_TRUE;
-
- /* Pipeline */
- gl_pipeline_init( ctx );
- gl_cva_init( ctx );
-
- /* Extensions */
- gl_extensions_ctr( ctx );
-
- ctx->AllowVertexCull = CLIP_CULLED_BIT;
-
- /* Lighting group */
- for (i=0;i<MAX_LIGHTS;i++) {
- init_light( &ctx->Light.Light[i], i );
- }
- make_empty_list( &ctx->Light.EnabledList );
-
- init_lightmodel( &ctx->Light.Model );
- init_material( &ctx->Light.Material[0] );
- init_material( &ctx->Light.Material[1] );
- ctx->Light.ShadeModel = GL_SMOOTH;
- ctx->Light.Enabled = GL_FALSE;
- ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
- ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
- ctx->Light.ColorMaterialBitmask
- = gl_material_bitmask( ctx,
- GL_FRONT_AND_BACK,
- GL_AMBIENT_AND_DIFFUSE, ~0, 0 );
-
- ctx->Light.ColorMaterialEnabled = GL_FALSE;
-
- /* Line group */
- ctx->Line.SmoothFlag = GL_FALSE;
- ctx->Line.StippleFlag = GL_FALSE;
- ctx->Line.Width = 1.0;
- ctx->Line.StipplePattern = 0xffff;
- ctx->Line.StippleFactor = 1;
-
- /* Display List group */
- ctx->List.ListBase = 0;
-
- /* Pixel group */
- ctx->Pixel.RedBias = 0.0;
- ctx->Pixel.RedScale = 1.0;
- ctx->Pixel.GreenBias = 0.0;
- ctx->Pixel.GreenScale = 1.0;
- ctx->Pixel.BlueBias = 0.0;
- ctx->Pixel.BlueScale = 1.0;
- ctx->Pixel.AlphaBias = 0.0;
- ctx->Pixel.AlphaScale = 1.0;
- ctx->Pixel.ScaleOrBiasRGBA = GL_FALSE;
- ctx->Pixel.DepthBias = 0.0;
- ctx->Pixel.DepthScale = 1.0;
- ctx->Pixel.IndexOffset = 0;
- ctx->Pixel.IndexShift = 0;
- ctx->Pixel.ZoomX = 1.0;
- ctx->Pixel.ZoomY = 1.0;
- ctx->Pixel.MapColorFlag = GL_FALSE;
- ctx->Pixel.MapStencilFlag = GL_FALSE;
- ctx->Pixel.MapStoSsize = 1;
- ctx->Pixel.MapItoIsize = 1;
- ctx->Pixel.MapItoRsize = 1;
- ctx->Pixel.MapItoGsize = 1;
- ctx->Pixel.MapItoBsize = 1;
- ctx->Pixel.MapItoAsize = 1;
- ctx->Pixel.MapRtoRsize = 1;
- ctx->Pixel.MapGtoGsize = 1;
- ctx->Pixel.MapBtoBsize = 1;
- ctx->Pixel.MapAtoAsize = 1;
- ctx->Pixel.MapStoS[0] = 0;
- ctx->Pixel.MapItoI[0] = 0;
- ctx->Pixel.MapItoR[0] = 0.0;
- ctx->Pixel.MapItoG[0] = 0.0;
- ctx->Pixel.MapItoB[0] = 0.0;
- ctx->Pixel.MapItoA[0] = 0.0;
- ctx->Pixel.MapItoR8[0] = 0;
- ctx->Pixel.MapItoG8[0] = 0;
- ctx->Pixel.MapItoB8[0] = 0;
- ctx->Pixel.MapItoA8[0] = 0;
- ctx->Pixel.MapRtoR[0] = 0.0;
- ctx->Pixel.MapGtoG[0] = 0.0;
- ctx->Pixel.MapBtoB[0] = 0.0;
- ctx->Pixel.MapAtoA[0] = 0.0;
-
- /* Point group */
- ctx->Point.SmoothFlag = GL_FALSE;
- ctx->Point.Size = 1.0;
- ctx->Point.Params[0] = 1.0;
- ctx->Point.Params[1] = 0.0;
- ctx->Point.Params[2] = 0.0;
- ctx->Point.Attenuated = GL_FALSE;
- ctx->Point.MinSize = 0.0;
- ctx->Point.MaxSize = (GLfloat) MAX_POINT_SIZE;
- ctx->Point.Threshold = 1.0;
-
- /* Polygon group */
- ctx->Polygon.CullFlag = GL_FALSE;
- ctx->Polygon.CullFaceMode = GL_BACK;
- ctx->Polygon.FrontFace = GL_CCW;
- ctx->Polygon.FrontBit = 0;
- ctx->Polygon.FrontMode = GL_FILL;
- ctx->Polygon.BackMode = GL_FILL;
- ctx->Polygon.Unfilled = GL_FALSE;
- ctx->Polygon.SmoothFlag = GL_FALSE;
- ctx->Polygon.StippleFlag = GL_FALSE;
- ctx->Polygon.OffsetFactor = 0.0F;
- ctx->Polygon.OffsetUnits = 0.0F;
- ctx->Polygon.OffsetPoint = GL_FALSE;
- ctx->Polygon.OffsetLine = GL_FALSE;
- ctx->Polygon.OffsetFill = GL_FALSE;
-
- /* Polygon Stipple group */
- MEMSET( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
-
- /* Scissor group */
- ctx->Scissor.Enabled = GL_FALSE;
- ctx->Scissor.X = 0;
- ctx->Scissor.Y = 0;
- ctx->Scissor.Width = 0;
- ctx->Scissor.Height = 0;
-
- /* Stencil group */
- ctx->Stencil.Enabled = GL_FALSE;
- ctx->Stencil.Function = GL_ALWAYS;
- ctx->Stencil.FailFunc = GL_KEEP;
- ctx->Stencil.ZPassFunc = GL_KEEP;
- ctx->Stencil.ZFailFunc = GL_KEEP;
- ctx->Stencil.Ref = 0;
- ctx->Stencil.ValueMask = STENCIL_MAX;
- ctx->Stencil.Clear = 0;
- ctx->Stencil.WriteMask = STENCIL_MAX;
-
- /* Texture group */
- ctx->Texture.CurrentUnit = 0; /* multitexture */
- ctx->Texture.CurrentTransformUnit = 0; /* multitexture */
- ctx->Texture.Enabled = 0;
-
- for (i=0; i<MAX_TEXTURE_UNITS; i++)
- init_texture_unit( ctx, i );
-
- init_color_table(&ctx->Texture.Palette);
-
- /* Transformation group */
- ctx->Transform.MatrixMode = GL_MODELVIEW;
- ctx->Transform.Normalize = GL_FALSE;
- ctx->Transform.RescaleNormals = GL_FALSE;
- for (i=0;i<MAX_CLIP_PLANES;i++) {
- ctx->Transform.ClipEnabled[i] = GL_FALSE;
- ASSIGN_4V( ctx->Transform.EyeUserPlane[i], 0.0, 0.0, 0.0, 0.0 );
- }
- ctx->Transform.AnyClip = GL_FALSE;
-
- /* Viewport group */
- ctx->Viewport.X = 0;
- ctx->Viewport.Y = 0;
- ctx->Viewport.Width = 0;
- ctx->Viewport.Height = 0;
- ctx->Viewport.Near = 0.0;
- ctx->Viewport.Far = 1.0;
- gl_matrix_ctr(&ctx->Viewport.WindowMap);
-
-#define Sz 10
-#define Tz 14
- ctx->Viewport.WindowMap.m[Sz] = 0.5 * DEPTH_SCALE;
- ctx->Viewport.WindowMap.m[Tz] = 0.5 * DEPTH_SCALE;
-#undef Sz
-#undef Tz
-
- ctx->Viewport.WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION;
- ctx->Viewport.WindowMap.type = MATRIX_3D_NO_ROT;
-
- /* Vertex arrays */
- ctx->Array.Vertex.Size = 4;
- ctx->Array.Vertex.Type = GL_FLOAT;
- ctx->Array.Vertex.Stride = 0;
- ctx->Array.Vertex.StrideB = 0;
- ctx->Array.Vertex.Ptr = NULL;
- ctx->Array.Vertex.Enabled = GL_FALSE;
- ctx->Array.Normal.Type = GL_FLOAT;
- ctx->Array.Normal.Stride = 0;
- ctx->Array.Normal.StrideB = 0;
- ctx->Array.Normal.Ptr = NULL;
- ctx->Array.Normal.Enabled = GL_FALSE;
- ctx->Array.Color.Size = 4;
- ctx->Array.Color.Type = GL_FLOAT;
- ctx->Array.Color.Stride = 0;
- ctx->Array.Color.StrideB = 0;
- ctx->Array.Color.Ptr = NULL;
- ctx->Array.Color.Enabled = GL_FALSE;
- ctx->Array.Index.Type = GL_FLOAT;
- ctx->Array.Index.Stride = 0;
- ctx->Array.Index.StrideB = 0;
- ctx->Array.Index.Ptr = NULL;
- ctx->Array.Index.Enabled = GL_FALSE;
- for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
- ctx->Array.TexCoord[i].Size = 4;
- ctx->Array.TexCoord[i].Type = GL_FLOAT;
- ctx->Array.TexCoord[i].Stride = 0;
- ctx->Array.TexCoord[i].StrideB = 0;
- ctx->Array.TexCoord[i].Ptr = NULL;
- ctx->Array.TexCoord[i].Enabled = GL_FALSE;
- }
- ctx->Array.TexCoordInterleaveFactor = 1;
- ctx->Array.EdgeFlag.Stride = 0;
- ctx->Array.EdgeFlag.StrideB = 0;
- ctx->Array.EdgeFlag.Ptr = NULL;
- ctx->Array.EdgeFlag.Enabled = GL_FALSE;
- ctx->Array.ActiveTexture = 0; /* GL_ARB_multitexture */
-
- /* Pixel transfer */
- ctx->Pack.Alignment = 4;
- ctx->Pack.RowLength = 0;
- ctx->Pack.ImageHeight = 0;
- ctx->Pack.SkipPixels = 0;
- ctx->Pack.SkipRows = 0;
- ctx->Pack.SkipImages = 0;
- ctx->Pack.SwapBytes = GL_FALSE;
- ctx->Pack.LsbFirst = GL_FALSE;
- ctx->Unpack.Alignment = 4;
- ctx->Unpack.RowLength = 0;
- ctx->Unpack.ImageHeight = 0;
- ctx->Unpack.SkipPixels = 0;
- ctx->Unpack.SkipRows = 0;
- ctx->Unpack.SkipImages = 0;
- ctx->Unpack.SwapBytes = GL_FALSE;
- ctx->Unpack.LsbFirst = GL_FALSE;
-
- /* Feedback */
- ctx->Feedback.Type = GL_2D; /* TODO: verify */
- ctx->Feedback.Buffer = NULL;
- ctx->Feedback.BufferSize = 0;
- ctx->Feedback.Count = 0;
-
- /* Selection/picking */
- ctx->Select.Buffer = NULL;
- ctx->Select.BufferSize = 0;
- ctx->Select.BufferCount = 0;
- ctx->Select.Hits = 0;
- ctx->Select.NameStackDepth = 0;
-
- /* Optimized Accum buffer */
- ctx->IntegerAccumMode = GL_TRUE;
- ctx->IntegerAccumScaler = 0.0;
-
- /* Renderer and client attribute stacks */
- ctx->AttribStackDepth = 0;
- ctx->ClientAttribStackDepth = 0;
-
- /*** Miscellaneous ***/
- ctx->NewState = NEW_ALL;
- ctx->RenderMode = GL_RENDER;
- ctx->StippleCounter = 0;
- ctx->NeedNormals = GL_FALSE;
- ctx->DoViewportMapping = GL_TRUE;
-
- ctx->NeedEyeCoords = GL_FALSE;
- ctx->NeedEyeNormals = GL_FALSE;
- ctx->vb_proj_matrix = &ctx->ModelProjectMatrix;
+ assert(ctx);
- /* Display list */
- ctx->CallDepth = 0;
- ctx->ExecuteFlag = GL_TRUE;
- ctx->CompileFlag = GL_FALSE;
- ctx->CurrentListPtr = NULL;
- ctx->CurrentBlock = NULL;
- ctx->CurrentListNum = 0;
- ctx->CurrentPos = 0;
+ /* Constants, may be overriden by device driver */
+ ctx->Const.MaxTextureLevels = MAX_TEXTURE_LEVELS;
+ ctx->Const.MaxTextureSize = 1 << (MAX_TEXTURE_LEVELS - 1);
+ ctx->Const.MaxTextureUnits = MAX_TEXTURE_UNITS;
+ ctx->Const.MaxArrayLockSize = MAX_ARRAY_LOCK_SIZE;
- ctx->ErrorValue = (GLenum) GL_NO_ERROR;
+ /* Modelview matrix */
+ gl_matrix_ctr( &ctx->ModelView );
+ gl_matrix_alloc_inv( &ctx->ModelView );
- ctx->CatchSignals = GL_TRUE;
-
- /* For debug/development only */
- ctx->NoRaster = getenv("MESA_NO_RASTER") ? GL_TRUE : GL_FALSE;
- ctx->FirstTimeCurrent = GL_TRUE;
-
- /* Dither disable */
- ctx->NoDither = getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE;
- if (ctx->NoDither) {
- if (getenv("MESA_DEBUG")) {
- fprintf(stderr, "MESA_NO_DITHER set - dithering disabled\n");
- }
- ctx->Color.DitherFlag = GL_FALSE;
- }
+ ctx->ModelViewStackDepth = 0;
+ for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
+ gl_matrix_ctr( &ctx->ModelViewStack[i] );
+ gl_matrix_alloc_inv( &ctx->ModelViewStack[i] );
}
-}
+ /* Projection matrix - need inv for user clipping in clip space*/
+ gl_matrix_ctr( &ctx->ProjectionMatrix );
+ gl_matrix_alloc_inv( &ctx->ProjectionMatrix );
+ gl_matrix_ctr( &ctx->ModelProjectMatrix );
+ gl_matrix_ctr( &ctx->ModelProjectWinMatrix );
+ ctx->ModelProjectWinMatrixUptodate = GL_FALSE;
-/*
- * Allocate a new GLvisual object.
- * Input: rgbFlag - GL_TRUE=RGB(A) mode, GL_FALSE=Color Index mode
- * alphaFlag - alloc software alpha buffers?
- * dbFlag - double buffering?
- * stereoFlag - stereo buffer?
- * depthFits - requested minimum bits per depth buffer value
- * stencilFits - requested minimum bits per stencil buffer value
- * accumFits - requested minimum bits per accum buffer component
- * indexFits - number of bits per pixel if rgbFlag==GL_FALSE
- * red/green/blue/alphaFits - number of bits per color component
- * in frame buffer for RGB(A) mode.
- * Return: pointer to new GLvisual or NULL if requested parameters can't
- * be met.
- */
-GLvisual *gl_create_visual( GLboolean rgbFlag,
- GLboolean alphaFlag,
- GLboolean dbFlag,
- GLboolean stereoFlag,
- GLint depthBits,
- GLint stencilBits,
- GLint accumBits,
- GLint indexBits,
- GLint redBits,
- GLint greenBits,
- GLint blueBits,
- GLint alphaBits )
-{
- GLvisual *vis;
-
- if (depthBits > (GLint) (8*sizeof(GLdepth))) {
- /* can't meet depth buffer requirements */
- return NULL;
- }
- if (stencilBits > (GLint) (8*sizeof(GLstencil))) {
- /* can't meet stencil buffer requirements */
- return NULL;
- }
- if (accumBits > (GLint) (8*sizeof(GLaccum))) {
- /* can't meet accum buffer requirements */
- return NULL;
- }
+ ctx->ProjectionStackDepth = 0;
+ ctx->NearFarStack[0][0] = 1.0; /* These values seem weird by make */
+ ctx->NearFarStack[0][1] = 0.0; /* sense mathematically. */
- vis = (GLvisual *) CALLOC( sizeof(GLvisual) );
- if (!vis) {
- return NULL;
+ for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
+ gl_matrix_ctr( &ctx->ProjectionStack[i] );
+ gl_matrix_alloc_inv( &ctx->ProjectionStack[i] );
}
- vis->RGBAflag = rgbFlag;
- vis->DBflag = dbFlag;
- vis->StereoFlag = stereoFlag;
- vis->RedBits = redBits;
- vis->GreenBits = greenBits;
- vis->BlueBits = blueBits;
- vis->AlphaBits = alphaFlag ? 8*sizeof(GLubyte) : alphaBits;
-
- vis->IndexBits = indexBits;
- vis->DepthBits = (depthBits>0) ? 8*sizeof(GLdepth) : 0;
- vis->AccumBits = (accumBits>0) ? 8*sizeof(GLaccum) : 0;
- vis->StencilBits = (stencilBits>0) ? 8*sizeof(GLstencil) : 0;
-
- vis->SoftwareAlpha = alphaFlag;
-
- return vis;
-}
-
-
-
-void gl_destroy_visual( GLvisual *vis )
-{
- FREE( vis );
-}
-
-
-
-
-/*
- * Create a new framebuffer. A GLframebuffer is a struct which
- * encapsulates the depth, stencil and accum buffers and related
- * parameters.
- * Input: visual - a GLvisual pointer
- * softwareDepth - create/use a software depth buffer?
- * softwareStencil - create/use a software stencil buffer?
- * softwareAccum - create/use a software accum buffer?
- * softwareAlpha - create/use a software alpha buffer?
-
- * Return: pointer to new GLframebuffer struct or NULL if error.
- */
-GLframebuffer *gl_create_framebuffer( GLvisual *visual,
- GLboolean softwareDepth,
- GLboolean softwareStencil,
- GLboolean softwareAccum,
- GLboolean softwareAlpha )
-{
- GLframebuffer *buffer;
-
- buffer = CALLOC_STRUCT(gl_frame_buffer);
- if (!buffer) {
- return NULL;
+ /* Texture matrix */
+ for (i=0; i<MAX_TEXTURE_UNITS; i++) {
+ gl_matrix_ctr( &ctx->TextureMatrix[i] );
+ ctx->TextureStackDepth[i] = 0;
+ for (j = 0 ; j < MAX_TEXTURE_STACK_DEPTH ; j++) {
+ ctx->TextureStack[i][j].inv = 0;
+ }
}
- /* sanity checks */
- if (softwareDepth ) {
- assert(visual->DepthBits > 0);
- }
- if (softwareStencil) {
- assert(visual->StencilBits > 0);
- }
- if (softwareAccum) {
- assert(visual->RGBAflag);
- assert(visual->AccumBits > 0);
+ /* Accumulate buffer group */
+ ASSIGN_4V( ctx->Accum.ClearColor, 0.0, 0.0, 0.0, 0.0 );
+
+ /* Color buffer group */
+ ctx->Color.IndexMask = 0xffffffff;
+ ctx->Color.ColorMask[0] = 0xff;
+ ctx->Color.ColorMask[1] = 0xff;
+ ctx->Color.ColorMask[2] = 0xff;
+ ctx->Color.ColorMask[3] = 0xff;
+ ctx->Color.SWmasking = GL_FALSE;
+ ctx->Color.ClearIndex = 0;
+ ASSIGN_4V( ctx->Color.ClearColor, 0.0, 0.0, 0.0, 0.0 );
+ ctx->Color.DrawBuffer = GL_FRONT;
+ ctx->Color.AlphaEnabled = GL_FALSE;
+ ctx->Color.AlphaFunc = GL_ALWAYS;
+ ctx->Color.AlphaRef = 0;
+ ctx->Color.BlendEnabled = GL_FALSE;
+ ctx->Color.BlendSrcRGB = GL_ONE;
+ ctx->Color.BlendDstRGB = GL_ZERO;
+ ctx->Color.BlendSrcA = GL_ONE;
+ ctx->Color.BlendDstA = GL_ZERO;
+ ctx->Color.BlendEquation = GL_FUNC_ADD_EXT;
+ ctx->Color.BlendFunc = NULL; /* this pointer set only when needed */
+ ASSIGN_4V( ctx->Color.BlendColor, 0.0, 0.0, 0.0, 0.0 );
+ ctx->Color.IndexLogicOpEnabled = GL_FALSE;
+ ctx->Color.ColorLogicOpEnabled = GL_FALSE;
+ ctx->Color.SWLogicOpEnabled = GL_FALSE;
+ ctx->Color.LogicOp = GL_COPY;
+ ctx->Color.DitherFlag = GL_TRUE;
+ ctx->Color.MultiDrawBuffer = GL_FALSE;
+
+ /* Current group */
+ ASSIGN_4V( ctx->Current.ByteColor, 255, 255, 255, 255);
+ ctx->Current.Index = 1;
+ for (i=0; i<MAX_TEXTURE_UNITS; i++)
+ ASSIGN_4V( ctx->Current.Texcoord[i], 0.0, 0.0, 0.0, 1.0 );
+ ASSIGN_4V( ctx->Current.RasterPos, 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterDistance = 0.0;
+ ASSIGN_4V( ctx->Current.RasterColor, 1.0, 1.0, 1.0, 1.0 );
+ ctx->Current.RasterIndex = 1;
+ for (i=0; i<MAX_TEXTURE_UNITS; i++)
+ ASSIGN_4V( ctx->Current.RasterMultiTexCoord[i], 0.0, 0.0, 0.0, 1.0 );
+ ctx->Current.RasterTexCoord = ctx->Current.RasterMultiTexCoord[0];
+ ctx->Current.RasterPosValid = GL_TRUE;
+ ctx->Current.EdgeFlag = GL_TRUE;
+ ASSIGN_3V( ctx->Current.Normal, 0.0, 0.0, 1.0 );
+ ctx->Current.Primitive = (GLenum) (GL_POLYGON + 1);
+
+ ctx->Current.Flag = (VERT_NORM|VERT_INDEX|VERT_RGBA|VERT_EDGE|
+ VERT_TEX0_1|VERT_TEX1_1|VERT_MATERIAL);
+
+ init_fallback_arrays( ctx );
+
+ /* Depth buffer group */
+ ctx->Depth.Test = GL_FALSE;
+ ctx->Depth.Clear = 1.0;
+ ctx->Depth.Func = GL_LESS;
+ ctx->Depth.Mask = GL_TRUE;
+
+ /* Evaluators group */
+ ctx->Eval.Map1Color4 = GL_FALSE;
+ ctx->Eval.Map1Index = GL_FALSE;
+ ctx->Eval.Map1Normal = GL_FALSE;
+ ctx->Eval.Map1TextureCoord1 = GL_FALSE;
+ ctx->Eval.Map1TextureCoord2 = GL_FALSE;
+ ctx->Eval.Map1TextureCoord3 = GL_FALSE;
+ ctx->Eval.Map1TextureCoord4 = GL_FALSE;
+ ctx->Eval.Map1Vertex3 = GL_FALSE;
+ ctx->Eval.Map1Vertex4 = GL_FALSE;
+ ctx->Eval.Map2Color4 = GL_FALSE;
+ ctx->Eval.Map2Index = GL_FALSE;
+ ctx->Eval.Map2Normal = GL_FALSE;
+ ctx->Eval.Map2TextureCoord1 = GL_FALSE;
+ ctx->Eval.Map2TextureCoord2 = GL_FALSE;
+ ctx->Eval.Map2TextureCoord3 = GL_FALSE;
+ ctx->Eval.Map2TextureCoord4 = GL_FALSE;
+ ctx->Eval.Map2Vertex3 = GL_FALSE;
+ ctx->Eval.Map2Vertex4 = GL_FALSE;
+ ctx->Eval.AutoNormal = GL_FALSE;
+ ctx->Eval.MapGrid1un = 1;
+ ctx->Eval.MapGrid1u1 = 0.0;
+ ctx->Eval.MapGrid1u2 = 1.0;
+ ctx->Eval.MapGrid2un = 1;
+ ctx->Eval.MapGrid2vn = 1;
+ ctx->Eval.MapGrid2u1 = 0.0;
+ ctx->Eval.MapGrid2u2 = 1.0;
+ ctx->Eval.MapGrid2v1 = 0.0;
+ ctx->Eval.MapGrid2v2 = 1.0;
+
+ /* Evaluator data */
+ {
+ static GLfloat vertex[4] = { 0.0, 0.0, 0.0, 1.0 };
+ static GLfloat normal[3] = { 0.0, 0.0, 1.0 };
+ static GLfloat index[1] = { 1.0 };
+ static GLfloat color[4] = { 1.0, 1.0, 1.0, 1.0 };
+ static GLfloat texcoord[4] = { 0.0, 0.0, 0.0, 1.0 };
+
+ init_1d_map( &ctx->EvalMap.Map1Vertex3, 3, vertex );
+ init_1d_map( &ctx->EvalMap.Map1Vertex4, 4, vertex );
+ init_1d_map( &ctx->EvalMap.Map1Index, 1, index );
+ init_1d_map( &ctx->EvalMap.Map1Color4, 4, color );
+ init_1d_map( &ctx->EvalMap.Map1Normal, 3, normal );
+ init_1d_map( &ctx->EvalMap.Map1Texture1, 1, texcoord );
+ init_1d_map( &ctx->EvalMap.Map1Texture2, 2, texcoord );
+ init_1d_map( &ctx->EvalMap.Map1Texture3, 3, texcoord );
+ init_1d_map( &ctx->EvalMap.Map1Texture4, 4, texcoord );
+
+ init_2d_map( &ctx->EvalMap.Map2Vertex3, 3, vertex );
+ init_2d_map( &ctx->EvalMap.Map2Vertex4, 4, vertex );
+ init_2d_map( &ctx->EvalMap.Map2Index, 1, index );
+ init_2d_map( &ctx->EvalMap.Map2Color4, 4, color );
+ init_2d_map( &ctx->EvalMap.Map2Normal, 3, normal );
+ init_2d_map( &ctx->EvalMap.Map2Texture1, 1, texcoord );
+ init_2d_map( &ctx->EvalMap.Map2Texture2, 2, texcoord );
+ init_2d_map( &ctx->EvalMap.Map2Texture3, 3, texcoord );
+ init_2d_map( &ctx->EvalMap.Map2Texture4, 4, texcoord );
+ }
+
+ /* Fog group */
+ ctx->Fog.Enabled = GL_FALSE;
+ ctx->Fog.Mode = GL_EXP;
+ ASSIGN_4V( ctx->Fog.Color, 0.0, 0.0, 0.0, 0.0 );
+ ctx->Fog.Index = 0.0;
+ ctx->Fog.Density = 1.0;
+ ctx->Fog.Start = 0.0;
+ ctx->Fog.End = 1.0;
+
+ /* Hint group */
+ ctx->Hint.PerspectiveCorrection = GL_DONT_CARE;
+ ctx->Hint.PointSmooth = GL_DONT_CARE;
+ ctx->Hint.LineSmooth = GL_DONT_CARE;
+ ctx->Hint.PolygonSmooth = GL_DONT_CARE;
+ ctx->Hint.Fog = GL_DONT_CARE;
+
+ ctx->Hint.AllowDrawWin = GL_TRUE;
+ ctx->Hint.AllowDrawSpn = GL_TRUE;
+ ctx->Hint.AllowDrawMem = GL_TRUE;
+ ctx->Hint.StrictLighting = GL_TRUE;
+
+ /* Pipeline */
+ gl_pipeline_init( ctx );
+ gl_cva_init( ctx );
+
+ /* Extensions */
+ gl_extensions_ctr( ctx );
+
+ ctx->AllowVertexCull = CLIP_CULLED_BIT;
+
+ /* Lighting group */
+ for (i=0;i<MAX_LIGHTS;i++) {
+ init_light( &ctx->Light.Light[i], i );
+ }
+ make_empty_list( &ctx->Light.EnabledList );
+
+ init_lightmodel( &ctx->Light.Model );
+ init_material( &ctx->Light.Material[0] );
+ init_material( &ctx->Light.Material[1] );
+ ctx->Light.ShadeModel = GL_SMOOTH;
+ ctx->Light.Enabled = GL_FALSE;
+ ctx->Light.ColorMaterialFace = GL_FRONT_AND_BACK;
+ ctx->Light.ColorMaterialMode = GL_AMBIENT_AND_DIFFUSE;
+ ctx->Light.ColorMaterialBitmask
+ = gl_material_bitmask( ctx,
+ GL_FRONT_AND_BACK,
+ GL_AMBIENT_AND_DIFFUSE, ~0, 0 );
+
+ ctx->Light.ColorMaterialEnabled = GL_FALSE;
+
+ /* Lighting miscellaneous */
+ ctx->ShineTabList = MALLOC_STRUCT( gl_shine_tab );
+ make_empty_list( ctx->ShineTabList );
+ for (i = 0 ; i < 10 ; i++) {
+ struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );
+ s->shininess = -1;
+ s->refcount = 0;
+ insert_at_tail( ctx->ShineTabList, s );
}
- if (softwareAlpha) {
- assert(visual->RGBAflag);
- assert(visual->AlphaBits > 0);
+ for (i = 0 ; i < 4 ; i++) {
+ ctx->ShineTable[i] = ctx->ShineTabList->prev;
+ ctx->ShineTable[i]->refcount++;
}
- buffer->Visual = visual;
- buffer->UseSoftwareDepthBuffer = softwareDepth;
- buffer->UseSoftwareStencilBuffer = softwareStencil;
- buffer->UseSoftwareAccumBuffer = softwareAccum;
- buffer->UseSoftwareAlphaBuffers = softwareAlpha;
-
- return buffer;
-}
+ /* Line group */
+ ctx->Line.SmoothFlag = GL_FALSE;
+ ctx->Line.StippleFlag = GL_FALSE;
+ ctx->Line.Width = 1.0;
+ ctx->Line.StipplePattern = 0xffff;
+ ctx->Line.StippleFactor = 1;
+
+ /* Display List group */
+ ctx->List.ListBase = 0;
+
+ /* Pixel group */
+ ctx->Pixel.RedBias = 0.0;
+ ctx->Pixel.RedScale = 1.0;
+ ctx->Pixel.GreenBias = 0.0;
+ ctx->Pixel.GreenScale = 1.0;
+ ctx->Pixel.BlueBias = 0.0;
+ ctx->Pixel.BlueScale = 1.0;
+ ctx->Pixel.AlphaBias = 0.0;
+ ctx->Pixel.AlphaScale = 1.0;
+ ctx->Pixel.ScaleOrBiasRGBA = GL_FALSE;
+ ctx->Pixel.DepthBias = 0.0;
+ ctx->Pixel.DepthScale = 1.0;
+ ctx->Pixel.IndexOffset = 0;
+ ctx->Pixel.IndexShift = 0;
+ ctx->Pixel.ZoomX = 1.0;
+ ctx->Pixel.ZoomY = 1.0;
+ ctx->Pixel.MapColorFlag = GL_FALSE;
+ ctx->Pixel.MapStencilFlag = GL_FALSE;
+ ctx->Pixel.MapStoSsize = 1;
+ ctx->Pixel.MapItoIsize = 1;
+ ctx->Pixel.MapItoRsize = 1;
+ ctx->Pixel.MapItoGsize = 1;
+ ctx->Pixel.MapItoBsize = 1;
+ ctx->Pixel.MapItoAsize = 1;
+ ctx->Pixel.MapRtoRsize = 1;
+ ctx->Pixel.MapGtoGsize = 1;
+ ctx->Pixel.MapBtoBsize = 1;
+ ctx->Pixel.MapAtoAsize = 1;
+ ctx->Pixel.MapStoS[0] = 0;
+ ctx->Pixel.MapItoI[0] = 0;
+ ctx->Pixel.MapItoR[0] = 0.0;
+ ctx->Pixel.MapItoG[0] = 0.0;
+ ctx->Pixel.MapItoB[0] = 0.0;
+ ctx->Pixel.MapItoA[0] = 0.0;
+ ctx->Pixel.MapItoR8[0] = 0;
+ ctx->Pixel.MapItoG8[0] = 0;
+ ctx->Pixel.MapItoB8[0] = 0;
+ ctx->Pixel.MapItoA8[0] = 0;
+ ctx->Pixel.MapRtoR[0] = 0.0;
+ ctx->Pixel.MapGtoG[0] = 0.0;
+ ctx->Pixel.MapBtoB[0] = 0.0;
+ ctx->Pixel.MapAtoA[0] = 0.0;
+
+ /* Point group */
+ ctx->Point.SmoothFlag = GL_FALSE;
+ ctx->Point.Size = 1.0;
+ ctx->Point.Params[0] = 1.0;
+ ctx->Point.Params[1] = 0.0;
+ ctx->Point.Params[2] = 0.0;
+ ctx->Point.Attenuated = GL_FALSE;
+ ctx->Point.MinSize = 0.0;
+ ctx->Point.MaxSize = (GLfloat) MAX_POINT_SIZE;
+ ctx->Point.Threshold = 1.0;
+
+ /* Polygon group */
+ ctx->Polygon.CullFlag = GL_FALSE;
+ ctx->Polygon.CullFaceMode = GL_BACK;
+ ctx->Polygon.FrontFace = GL_CCW;
+ ctx->Polygon.FrontBit = 0;
+ ctx->Polygon.FrontMode = GL_FILL;
+ ctx->Polygon.BackMode = GL_FILL;
+ ctx->Polygon.Unfilled = GL_FALSE;
+ ctx->Polygon.SmoothFlag = GL_FALSE;
+ ctx->Polygon.StippleFlag = GL_FALSE;
+ ctx->Polygon.OffsetFactor = 0.0F;
+ ctx->Polygon.OffsetUnits = 0.0F;
+ ctx->Polygon.OffsetPoint = GL_FALSE;
+ ctx->Polygon.OffsetLine = GL_FALSE;
+ ctx->Polygon.OffsetFill = GL_FALSE;
+
+ /* Polygon Stipple group */
+ MEMSET( ctx->PolygonStipple, 0xff, 32*sizeof(GLuint) );
+
+ /* Scissor group */
+ ctx->Scissor.Enabled = GL_FALSE;
+ ctx->Scissor.X = 0;
+ ctx->Scissor.Y = 0;
+ ctx->Scissor.Width = 0;
+ ctx->Scissor.Height = 0;
+
+ /* Stencil group */
+ ctx->Stencil.Enabled = GL_FALSE;
+ ctx->Stencil.Function = GL_ALWAYS;
+ ctx->Stencil.FailFunc = GL_KEEP;
+ ctx->Stencil.ZPassFunc = GL_KEEP;
+ ctx->Stencil.ZFailFunc = GL_KEEP;
+ ctx->Stencil.Ref = 0;
+ ctx->Stencil.ValueMask = STENCIL_MAX;
+ ctx->Stencil.Clear = 0;
+ ctx->Stencil.WriteMask = STENCIL_MAX;
+
+ /* Texture group */
+ ctx->Texture.CurrentUnit = 0; /* multitexture */
+ ctx->Texture.CurrentTransformUnit = 0; /* multitexture */
+ ctx->Texture.Enabled = 0;
+ for (i=0; i<MAX_TEXTURE_UNITS; i++)
+ init_texture_unit( ctx, i );
+ init_color_table(&ctx->Texture.Palette);
+
+ /* Transformation group */
+ ctx->Transform.MatrixMode = GL_MODELVIEW;
+ ctx->Transform.Normalize = GL_FALSE;
+ ctx->Transform.RescaleNormals = GL_FALSE;
+ for (i=0;i<MAX_CLIP_PLANES;i++) {
+ ctx->Transform.ClipEnabled[i] = GL_FALSE;
+ ASSIGN_4V( ctx->Transform.EyeUserPlane[i], 0.0, 0.0, 0.0, 0.0 );
+ }
+ ctx->Transform.AnyClip = GL_FALSE;
+
+ /* Viewport group */
+ ctx->Viewport.X = 0;
+ ctx->Viewport.Y = 0;
+ ctx->Viewport.Width = 0;
+ ctx->Viewport.Height = 0;
+ ctx->Viewport.Near = 0.0;
+ ctx->Viewport.Far = 1.0;
+ gl_matrix_ctr(&ctx->Viewport.WindowMap);
+#define Sz 10
+#define Tz 14
+ ctx->Viewport.WindowMap.m[Sz] = 0.5 * DEPTH_SCALE;
+ ctx->Viewport.WindowMap.m[Tz] = 0.5 * DEPTH_SCALE;
+#undef Sz
+#undef Tz
-/*
- * Free a framebuffer struct and its buffers.
- */
-void gl_destroy_framebuffer( GLframebuffer *buffer )
-{
- if (buffer) {
- if (buffer->Depth) {
- FREE( buffer->Depth );
- }
- if (buffer->Accum) {
- FREE( buffer->Accum );
- }
- if (buffer->Stencil) {
- FREE( buffer->Stencil );
- }
- if (buffer->FrontLeftAlpha) {
- FREE( buffer->FrontLeftAlpha );
- }
- if (buffer->BackLeftAlpha) {
- FREE( buffer->BackLeftAlpha );
- }
- if (buffer->FrontRightAlpha) {
- FREE( buffer->FrontRightAlpha );
- }
- if (buffer->BackRightAlpha) {
- FREE( buffer->BackRightAlpha );
+ ctx->Viewport.WindowMap.flags = MAT_FLAG_GENERAL_SCALE|MAT_FLAG_TRANSLATION;
+ ctx->Viewport.WindowMap.type = MATRIX_3D_NO_ROT;
+
+ /* Vertex arrays */
+ ctx->Array.Vertex.Size = 4;
+ ctx->Array.Vertex.Type = GL_FLOAT;
+ ctx->Array.Vertex.Stride = 0;
+ ctx->Array.Vertex.StrideB = 0;
+ ctx->Array.Vertex.Ptr = NULL;
+ ctx->Array.Vertex.Enabled = GL_FALSE;
+ ctx->Array.Normal.Type = GL_FLOAT;
+ ctx->Array.Normal.Stride = 0;
+ ctx->Array.Normal.StrideB = 0;
+ ctx->Array.Normal.Ptr = NULL;
+ ctx->Array.Normal.Enabled = GL_FALSE;
+ ctx->Array.Color.Size = 4;
+ ctx->Array.Color.Type = GL_FLOAT;
+ ctx->Array.Color.Stride = 0;
+ ctx->Array.Color.StrideB = 0;
+ ctx->Array.Color.Ptr = NULL;
+ ctx->Array.Color.Enabled = GL_FALSE;
+ ctx->Array.Index.Type = GL_FLOAT;
+ ctx->Array.Index.Stride = 0;
+ ctx->Array.Index.StrideB = 0;
+ ctx->Array.Index.Ptr = NULL;
+ ctx->Array.Index.Enabled = GL_FALSE;
+ for (i = 0; i < MAX_TEXTURE_UNITS; i++) {
+ ctx->Array.TexCoord[i].Size = 4;
+ ctx->Array.TexCoord[i].Type = GL_FLOAT;
+ ctx->Array.TexCoord[i].Stride = 0;
+ ctx->Array.TexCoord[i].StrideB = 0;
+ ctx->Array.TexCoord[i].Ptr = NULL;
+ ctx->Array.TexCoord[i].Enabled = GL_FALSE;
+ }
+ ctx->Array.TexCoordInterleaveFactor = 1;
+ ctx->Array.EdgeFlag.Stride = 0;
+ ctx->Array.EdgeFlag.StrideB = 0;
+ ctx->Array.EdgeFlag.Ptr = NULL;
+ ctx->Array.EdgeFlag.Enabled = GL_FALSE;
+ ctx->Array.ActiveTexture = 0; /* GL_ARB_multitexture */
+
+ /* Pixel transfer */
+ ctx->Pack.Alignment = 4;
+ ctx->Pack.RowLength = 0;
+ ctx->Pack.ImageHeight = 0;
+ ctx->Pack.SkipPixels = 0;
+ ctx->Pack.SkipRows = 0;
+ ctx->Pack.SkipImages = 0;
+ ctx->Pack.SwapBytes = GL_FALSE;
+ ctx->Pack.LsbFirst = GL_FALSE;
+ ctx->Unpack.Alignment = 4;
+ ctx->Unpack.RowLength = 0;
+ ctx->Unpack.ImageHeight = 0;
+ ctx->Unpack.SkipPixels = 0;
+ ctx->Unpack.SkipRows = 0;
+ ctx->Unpack.SkipImages = 0;
+ ctx->Unpack.SwapBytes = GL_FALSE;
+ ctx->Unpack.LsbFirst = GL_FALSE;
+
+ /* Feedback */
+ ctx->Feedback.Type = GL_2D; /* TODO: verify */
+ ctx->Feedback.Buffer = NULL;
+ ctx->Feedback.BufferSize = 0;
+ ctx->Feedback.Count = 0;
+
+ /* Selection/picking */
+ ctx->Select.Buffer = NULL;
+ ctx->Select.BufferSize = 0;
+ ctx->Select.BufferCount = 0;
+ ctx->Select.Hits = 0;
+ ctx->Select.NameStackDepth = 0;
+
+ /* Optimized Accum buffer */
+ ctx->IntegerAccumMode = GL_TRUE;
+ ctx->IntegerAccumScaler = 0.0;
+
+ /* Renderer and client attribute stacks */
+ ctx->AttribStackDepth = 0;
+ ctx->ClientAttribStackDepth = 0;
+
+ /* Miscellaneous */
+ ctx->NewState = NEW_ALL;
+ ctx->RenderMode = GL_RENDER;
+ ctx->StippleCounter = 0;
+ ctx->NeedNormals = GL_FALSE;
+ ctx->DoViewportMapping = GL_TRUE;
+
+ ctx->NeedEyeCoords = GL_FALSE;
+ ctx->NeedEyeNormals = GL_FALSE;
+ ctx->vb_proj_matrix = &ctx->ModelProjectMatrix;
+
+ /* Display list */
+ ctx->CallDepth = 0;
+ ctx->ExecuteFlag = GL_TRUE;
+ ctx->CompileFlag = GL_FALSE;
+ ctx->CurrentListPtr = NULL;
+ ctx->CurrentBlock = NULL;
+ ctx->CurrentListNum = 0;
+ ctx->CurrentPos = 0;
+
+ ctx->ErrorValue = (GLenum) GL_NO_ERROR;
+
+ ctx->CatchSignals = GL_TRUE;
+
+ /* For debug/development only */
+ ctx->NoRaster = getenv("MESA_NO_RASTER") ? GL_TRUE : GL_FALSE;
+ ctx->FirstTimeCurrent = GL_TRUE;
+
+ /* Dither disable */
+ ctx->NoDither = getenv("MESA_NO_DITHER") ? GL_TRUE : GL_FALSE;
+ if (ctx->NoDither) {
+ if (getenv("MESA_DEBUG")) {
+ fprintf(stderr, "MESA_NO_DITHER set - dithering disabled\n");
}
- FREE(buffer);
+ ctx->Color.DitherFlag = GL_FALSE;
}
}
/*
- * Allocate and initialize a GLcontext structure.
- * Input: visual - a GLvisual pointer
- * sharelist - another context to share display lists with or NULL
- * driver_ctx - pointer to device driver's context state struct
- * Return: pointer to a new gl_context struct or NULL if error.
+ * Initialize a GLcontext struct.
*/
-GLcontext *gl_create_context( GLvisual *visual,
- GLcontext *share_list,
- void *driver_ctx,
- GLboolean direct )
+GLboolean gl_initialize_context_data( GLcontext *ctx,
+ GLvisual *visual,
+ GLcontext *share_list,
+ void *driver_ctx,
+ GLboolean direct )
{
- GLcontext *ctx;
- GLuint i;
-
(void) direct; /* not used */
- /* do some implementation tests */
- assert( sizeof(GLbyte) == 1 );
- assert( sizeof(GLshort) >= 2 );
- assert( sizeof(GLint) >= 4 );
- assert( sizeof(GLubyte) == 1 );
- assert( sizeof(GLushort) >= 2 );
- assert( sizeof(GLuint) >= 4 );
-
/* misc one-time initializations */
one_time_init();
- ctx = (GLcontext *) CALLOC( sizeof(GLcontext) );
- if (!ctx) {
- return NULL;
- }
-
ctx->DriverCtx = driver_ctx;
ctx->Visual = visual;
ctx->DrawBuffer = NULL;
ctx->VB = gl_vb_create_for_immediate( ctx );
if (!ctx->VB) {
FREE( ctx );
- return NULL;
+ return GL_FALSE;
}
ctx->input = ctx->VB->IM;
if (!ctx->PB) {
FREE( ctx->VB );
FREE( ctx );
- return NULL;
+ return GL_FALSE;
}
if (share_list) {
FREE(ctx->VB);
FREE(ctx->PB);
FREE(ctx);
- return NULL;
+ return GL_FALSE;
}
}
ctx->Shared->RefCount++;
- initialize_context( ctx );
+ init_attrib_groups( ctx );
+
gl_reset_vb( ctx->VB );
gl_reset_input( ctx );
-
- ctx->ShineTabList = MALLOC_STRUCT( gl_shine_tab );
- make_empty_list( ctx->ShineTabList );
-
- for (i = 0 ; i < 10 ; i++) {
- struct gl_shine_tab *s = MALLOC_STRUCT( gl_shine_tab );
- s->shininess = -1;
- s->refcount = 0;
- insert_at_tail( ctx->ShineTabList, s );
- }
-
- for (i = 0 ; i < 4 ; i++) {
- ctx->ShineTable[i] = ctx->ShineTabList->prev;
- ctx->ShineTable[i]->refcount++;
- }
-
if (visual->DBflag) {
ctx->Color.DrawBuffer = GL_BACK;
ctx->Color.DriverDrawBuffer = GL_BACK_LEFT;
ctx->Pixel.DriverReadBuffer = GL_FRONT_LEFT;
}
-
#ifdef PROFILE
init_timings( ctx );
#endif
FREE(ctx->VB);
FREE(ctx->PB);
FREE(ctx);
- return NULL;
+ return GL_FALSE;
}
/* setup API dispatch tables */
_mesa_init_dlist_table( &ctx->Save );
ctx->CurrentDispatch = &ctx->Exec;
- return ctx;
+ return GL_TRUE;
}
/*
- * Destroy a gl_context structure.
+ * Allocate and initialize a GLcontext structure.
+ * Input: visual - a GLvisual pointer
+ * sharelist - another context to share display lists with or NULL
+ * driver_ctx - pointer to device driver's context state struct
+ * Return: pointer to a new gl_context struct or NULL if error.
*/
-void gl_destroy_context( GLcontext *ctx )
+GLcontext *gl_create_context( GLvisual *visual,
+ GLcontext *share_list,
+ void *driver_ctx,
+ GLboolean direct )
{
- if (ctx) {
+ GLcontext *ctx = (GLcontext *) CALLOC( sizeof(GLcontext) );
+ if (!ctx) {
+ return NULL;
+ }
- GLuint i;
- struct gl_shine_tab *s, *tmps;
+ if (gl_initialize_context_data(ctx, visual, share_list,
+ driver_ctx, direct)) {
+ return ctx;
+ }
+ else {
+ FREE(ctx);
+ return NULL;
+ }
+}
- /* if we're destroying the current context, unbind it first */
- if (ctx == gl_get_current_context()) {
- gl_make_current(NULL, NULL);
- }
-#ifdef PROFILE
- if (getenv("MESA_PROFILE")) {
- print_timings( ctx );
- }
-#endif
- gl_matrix_dtr( &ctx->ModelView );
- for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
- gl_matrix_dtr( &ctx->ModelViewStack[i] );
- }
- gl_matrix_dtr( &ctx->ProjectionMatrix );
- for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
- gl_matrix_dtr( &ctx->ProjectionStack[i] );
- }
+/*
+ * Free the data associated with the given context.
+ * But don't free() the GLcontext struct itself!
+ */
+void gl_free_context_data( GLcontext *ctx )
+{
+ GLuint i;
+ struct gl_shine_tab *s, *tmps;
- FREE( ctx->PB );
+ /* if we're destroying the current context, unbind it first */
+ if (ctx == gl_get_current_context()) {
+ gl_make_current(NULL, NULL);
+ }
- if(ctx->input != ctx->VB->IM)
- gl_immediate_free( ctx->input );
+#ifdef PROFILE
+ if (getenv("MESA_PROFILE")) {
+ print_timings( ctx );
+ }
+#endif
- gl_vb_free( ctx->VB );
+ gl_matrix_dtr( &ctx->ModelView );
+ for (i = 0 ; i < MAX_MODELVIEW_STACK_DEPTH ; i++) {
+ gl_matrix_dtr( &ctx->ModelViewStack[i] );
+ }
+ gl_matrix_dtr( &ctx->ProjectionMatrix );
+ for (i = 0 ; i < MAX_PROJECTION_STACK_DEPTH ; i++) {
+ gl_matrix_dtr( &ctx->ProjectionStack[i] );
+ }
+
+ FREE( ctx->PB );
+
+ if(ctx->input != ctx->VB->IM)
+ gl_immediate_free( ctx->input );
+
+ gl_vb_free( ctx->VB );
+
+ ctx->Shared->RefCount--;
+ assert(ctx->Shared->RefCount>=0);
+ if (ctx->Shared->RefCount==0) {
+ /* free shared state */
+ free_shared_state( ctx, ctx->Shared );
+ }
+
+ foreach_s( s, tmps, ctx->ShineTabList ) {
+ FREE( s );
+ }
+ FREE( ctx->ShineTabList );
+
+ /* Free proxy texture objects */
+ gl_free_texture_object( NULL, ctx->Texture.Proxy1D );
+ gl_free_texture_object( NULL, ctx->Texture.Proxy2D );
+ gl_free_texture_object( NULL, ctx->Texture.Proxy3D );
+
+ /* Free evaluator data */
+ if (ctx->EvalMap.Map1Vertex3.Points)
+ FREE( ctx->EvalMap.Map1Vertex3.Points );
+ if (ctx->EvalMap.Map1Vertex4.Points)
+ FREE( ctx->EvalMap.Map1Vertex4.Points );
+ if (ctx->EvalMap.Map1Index.Points)
+ FREE( ctx->EvalMap.Map1Index.Points );
+ if (ctx->EvalMap.Map1Color4.Points)
+ FREE( ctx->EvalMap.Map1Color4.Points );
+ if (ctx->EvalMap.Map1Normal.Points)
+ FREE( ctx->EvalMap.Map1Normal.Points );
+ if (ctx->EvalMap.Map1Texture1.Points)
+ FREE( ctx->EvalMap.Map1Texture1.Points );
+ if (ctx->EvalMap.Map1Texture2.Points)
+ FREE( ctx->EvalMap.Map1Texture2.Points );
+ if (ctx->EvalMap.Map1Texture3.Points)
+ FREE( ctx->EvalMap.Map1Texture3.Points );
+ if (ctx->EvalMap.Map1Texture4.Points)
+ FREE( ctx->EvalMap.Map1Texture4.Points );
+
+ if (ctx->EvalMap.Map2Vertex3.Points)
+ FREE( ctx->EvalMap.Map2Vertex3.Points );
+ if (ctx->EvalMap.Map2Vertex4.Points)
+ FREE( ctx->EvalMap.Map2Vertex4.Points );
+ if (ctx->EvalMap.Map2Index.Points)
+ FREE( ctx->EvalMap.Map2Index.Points );
+ if (ctx->EvalMap.Map2Color4.Points)
+ FREE( ctx->EvalMap.Map2Color4.Points );
+ if (ctx->EvalMap.Map2Normal.Points)
+ FREE( ctx->EvalMap.Map2Normal.Points );
+ if (ctx->EvalMap.Map2Texture1.Points)
+ FREE( ctx->EvalMap.Map2Texture1.Points );
+ if (ctx->EvalMap.Map2Texture2.Points)
+ FREE( ctx->EvalMap.Map2Texture2.Points );
+ if (ctx->EvalMap.Map2Texture3.Points)
+ FREE( ctx->EvalMap.Map2Texture3.Points );
+ if (ctx->EvalMap.Map2Texture4.Points)
+ FREE( ctx->EvalMap.Map2Texture4.Points );
+
+ /* Free cache of immediate buffers. */
+ while (ctx->nr_im_queued-- > 0) {
+ struct immediate * next = ctx->freed_im_queue->next;
+ FREE( ctx->freed_im_queue );
+ ctx->freed_im_queue = next;
+ }
+ gl_extensions_dtr(ctx);
+}
- ctx->Shared->RefCount--;
- assert(ctx->Shared->RefCount>=0);
- if (ctx->Shared->RefCount==0) {
- /* free shared state */
- free_shared_state( ctx, ctx->Shared );
- }
- foreach_s( s, tmps, ctx->ShineTabList ) {
- FREE( s );
- }
- FREE( ctx->ShineTabList );
-
- /* Free proxy texture objects */
- gl_free_texture_object( NULL, ctx->Texture.Proxy1D );
- gl_free_texture_object( NULL, ctx->Texture.Proxy2D );
- gl_free_texture_object( NULL, ctx->Texture.Proxy3D );
-
- /* Free evaluator data */
- if (ctx->EvalMap.Map1Vertex3.Points)
- FREE( ctx->EvalMap.Map1Vertex3.Points );
- if (ctx->EvalMap.Map1Vertex4.Points)
- FREE( ctx->EvalMap.Map1Vertex4.Points );
- if (ctx->EvalMap.Map1Index.Points)
- FREE( ctx->EvalMap.Map1Index.Points );
- if (ctx->EvalMap.Map1Color4.Points)
- FREE( ctx->EvalMap.Map1Color4.Points );
- if (ctx->EvalMap.Map1Normal.Points)
- FREE( ctx->EvalMap.Map1Normal.Points );
- if (ctx->EvalMap.Map1Texture1.Points)
- FREE( ctx->EvalMap.Map1Texture1.Points );
- if (ctx->EvalMap.Map1Texture2.Points)
- FREE( ctx->EvalMap.Map1Texture2.Points );
- if (ctx->EvalMap.Map1Texture3.Points)
- FREE( ctx->EvalMap.Map1Texture3.Points );
- if (ctx->EvalMap.Map1Texture4.Points)
- FREE( ctx->EvalMap.Map1Texture4.Points );
-
- if (ctx->EvalMap.Map2Vertex3.Points)
- FREE( ctx->EvalMap.Map2Vertex3.Points );
- if (ctx->EvalMap.Map2Vertex4.Points)
- FREE( ctx->EvalMap.Map2Vertex4.Points );
- if (ctx->EvalMap.Map2Index.Points)
- FREE( ctx->EvalMap.Map2Index.Points );
- if (ctx->EvalMap.Map2Color4.Points)
- FREE( ctx->EvalMap.Map2Color4.Points );
- if (ctx->EvalMap.Map2Normal.Points)
- FREE( ctx->EvalMap.Map2Normal.Points );
- if (ctx->EvalMap.Map2Texture1.Points)
- FREE( ctx->EvalMap.Map2Texture1.Points );
- if (ctx->EvalMap.Map2Texture2.Points)
- FREE( ctx->EvalMap.Map2Texture2.Points );
- if (ctx->EvalMap.Map2Texture3.Points)
- FREE( ctx->EvalMap.Map2Texture3.Points );
- if (ctx->EvalMap.Map2Texture4.Points)
- FREE( ctx->EvalMap.Map2Texture4.Points );
-
- /* Free cache of immediate buffers. */
- while (ctx->nr_im_queued-- > 0) {
- struct immediate * next = ctx->freed_im_queue->next;
- FREE( ctx->freed_im_queue );
- ctx->freed_im_queue = next;
- }
- gl_extensions_dtr(ctx);
+/*
+ * Destroy a GLcontext structure.
+ */
+void gl_destroy_context( GLcontext *ctx )
+{
+ if (ctx) {
+ gl_free_context_data(ctx);
FREE( (void *) ctx );
}
}
/*
- * Just reads the config files...
+ * Called by the driver after both the context and driver are fully
+ * initialized. Currently just reads the config file.
*/
void gl_context_initialize( GLcontext *ctx )
{
projects / mesa.git / commitdiff