-/* $Id: context.c,v 1.37 2000/01/31 23:11:39 brianp Exp $ */
+/* $Id: context.c,v 1.38 2000/02/02 19:16:46 brianp Exp $ */
/*
* Mesa 3-D graphics library
#include "glthread.h"
#include "hash.h"
#include "light.h"
-#include "lines.h"
-#include "dlist.h"
#include "macros.h"
#include "matrix.h"
#include "mem.h"
#include "mmath.h"
#include "pb.h"
#include "pipeline.h"
-#include "points.h"
-#include "quads.h"
#include "shade.h"
#include "simple_list.h"
#include "stencil.h"
#include "stages.h"
-#include "triangle.h"
+#include "state.h"
#include "translate.h"
#include "teximage.h"
#include "texobj.h"
#include "varray.h"
#include "vb.h"
#include "vbcull.h"
-#include "vbfill.h"
#include "vbrender.h"
#include "vbxform.h"
#include "vertices.h"
-void
-_mesa_ResizeBuffersMESA( void )
-{
- GLcontext *ctx = gl_get_current_context();
-
- GLuint buf_width, buf_height;
-
- if (MESA_VERBOSE & VERBOSE_API)
- fprintf(stderr, "glResizeBuffersMESA\n");
-
- /* ask device driver for size of output buffer */
- (*ctx->Driver.GetBufferSize)( ctx, &buf_width, &buf_height );
-
- /* see if size of device driver's color buffer (window) has changed */
- if (ctx->DrawBuffer->Width == (GLint) buf_width &&
- ctx->DrawBuffer->Height == (GLint) buf_height)
- return;
-
- ctx->NewState |= NEW_RASTER_OPS; /* to update scissor / window bounds */
-
- /* save buffer size */
- ctx->DrawBuffer->Width = buf_width;
- ctx->DrawBuffer->Height = buf_height;
-
- /* Reallocate other buffers if needed. */
- if (ctx->DrawBuffer->UseSoftwareDepthBuffer) {
- gl_alloc_depth_buffer( ctx );
- }
- if (ctx->DrawBuffer->UseSoftwareStencilBuffer) {
- gl_alloc_stencil_buffer( ctx );
- }
- if (ctx->DrawBuffer->UseSoftwareAccumBuffer) {
- gl_alloc_accum_buffer( ctx );
- }
- if (ctx->Visual->SoftwareAlpha) {
- gl_alloc_alpha_buffers( ctx );
- }
-}
-
-
-
/**********************************************************************/
/***** Miscellaneous functions *****/
/**********************************************************************/
+/*
+ * Compile an error into current display list.
+ */
void gl_compile_error( GLcontext *ctx, GLenum error, const char *s )
{
if (ctx->CompileFlag)
}
+
/*
* This is Mesa's error handler. Normally, all that's done is the updating
* of the current error value. If Mesa is compiled with -DDEBUG or if the
-/**********************************************************************/
-/***** State update logic *****/
-/**********************************************************************/
-
-
-/*
- * Since the device driver may or may not support pixel logic ops we
- * have to make some extensive tests to determine whether or not
- * software-implemented logic operations have to be used.
- */
-static void update_pixel_logic( GLcontext *ctx )
-{
- if (ctx->Visual->RGBAflag) {
- /* RGBA mode blending w/ Logic Op */
- if (ctx->Color.ColorLogicOpEnabled) {
- if (ctx->Driver.LogicOp
- && (*ctx->Driver.LogicOp)( ctx, ctx->Color.LogicOp )) {
- /* Device driver can do logic, don't have to do it in software */
- ctx->Color.SWLogicOpEnabled = GL_FALSE;
- }
- else {
- /* Device driver can't do logic op so we do it in software */
- ctx->Color.SWLogicOpEnabled = GL_TRUE;
- }
- }
- else {
- /* no logic op */
- if (ctx->Driver.LogicOp) {
- (void) (*ctx->Driver.LogicOp)( ctx, GL_COPY );
- }
- ctx->Color.SWLogicOpEnabled = GL_FALSE;
- }
- }
- else {
- /* CI mode Logic Op */
- if (ctx->Color.IndexLogicOpEnabled) {
- if (ctx->Driver.LogicOp
- && (*ctx->Driver.LogicOp)( ctx, ctx->Color.LogicOp )) {
- /* Device driver can do logic, don't have to do it in software */
- ctx->Color.SWLogicOpEnabled = GL_FALSE;
- }
- else {
- /* Device driver can't do logic op so we do it in software */
- ctx->Color.SWLogicOpEnabled = GL_TRUE;
- }
- }
- else {
- /* no logic op */
- if (ctx->Driver.LogicOp) {
- (void) (*ctx->Driver.LogicOp)( ctx, GL_COPY );
- }
- ctx->Color.SWLogicOpEnabled = GL_FALSE;
- }
- }
-}
-
-
-
-/*
- * Check if software implemented RGBA or Color Index masking is needed.
- */
-static void update_pixel_masking( GLcontext *ctx )
-{
- if (ctx->Visual->RGBAflag) {
- GLuint *colorMask = (GLuint *) ctx->Color.ColorMask;
- if (*colorMask == 0xffffffff) {
- /* disable masking */
- if (ctx->Driver.ColorMask) {
- (void) (*ctx->Driver.ColorMask)( ctx, GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE );
- }
- ctx->Color.SWmasking = GL_FALSE;
- }
- else {
- /* Ask driver to do color masking, if it can't then
- * do it in software
- */
- GLboolean red = ctx->Color.ColorMask[RCOMP] ? GL_TRUE : GL_FALSE;
- GLboolean green = ctx->Color.ColorMask[GCOMP] ? GL_TRUE : GL_FALSE;
- GLboolean blue = ctx->Color.ColorMask[BCOMP] ? GL_TRUE : GL_FALSE;
- GLboolean alpha = ctx->Color.ColorMask[ACOMP] ? GL_TRUE : GL_FALSE;
- if (ctx->Driver.ColorMask
- && (*ctx->Driver.ColorMask)( ctx, red, green, blue, alpha )) {
- ctx->Color.SWmasking = GL_FALSE;
- }
- else {
- ctx->Color.SWmasking = GL_TRUE;
- }
- }
- }
- else {
- if (ctx->Color.IndexMask==0xffffffff) {
- /* disable masking */
- if (ctx->Driver.IndexMask) {
- (void) (*ctx->Driver.IndexMask)( ctx, 0xffffffff );
- }
- ctx->Color.SWmasking = GL_FALSE;
- }
- else {
- /* Ask driver to do index masking, if it can't then
- * do it in software
- */
- if (ctx->Driver.IndexMask
- && (*ctx->Driver.IndexMask)( ctx, ctx->Color.IndexMask )) {
- ctx->Color.SWmasking = GL_FALSE;
- }
- else {
- ctx->Color.SWmasking = GL_TRUE;
- }
- }
- }
-}
-
-
-static void update_fog_mode( GLcontext *ctx )
-{
- int old_mode = ctx->FogMode;
-
- if (ctx->Fog.Enabled) {
- if (ctx->Texture.Enabled)
- ctx->FogMode = FOG_FRAGMENT;
- else if (ctx->Hint.Fog == GL_NICEST)
- ctx->FogMode = FOG_FRAGMENT;
- else
- ctx->FogMode = FOG_VERTEX;
-
- if (ctx->Driver.GetParameteri)
- if ((ctx->Driver.GetParameteri)( ctx, DD_HAVE_HARDWARE_FOG ))
- ctx->FogMode = FOG_FRAGMENT;
- }
- else {
- ctx->FogMode = FOG_NONE;
- }
-
- if (old_mode != ctx->FogMode)
- ctx->NewState |= NEW_FOG;
-}
-
-
-/*
- * Recompute the value of ctx->RasterMask, etc. according to
- * the current context.
- */
-static void update_rasterflags( GLcontext *ctx )
+void
+_mesa_Finish( void )
{
- ctx->RasterMask = 0;
-
- if (ctx->Color.AlphaEnabled) ctx->RasterMask |= ALPHATEST_BIT;
- if (ctx->Color.BlendEnabled) ctx->RasterMask |= BLEND_BIT;
- if (ctx->Depth.Test) ctx->RasterMask |= DEPTH_BIT;
- if (ctx->FogMode==FOG_FRAGMENT) ctx->RasterMask |= FOG_BIT;
- if (ctx->Color.SWLogicOpEnabled) ctx->RasterMask |= LOGIC_OP_BIT;
- if (ctx->Scissor.Enabled) ctx->RasterMask |= SCISSOR_BIT;
- if (ctx->Stencil.Enabled) ctx->RasterMask |= STENCIL_BIT;
- if (ctx->Color.SWmasking) ctx->RasterMask |= MASKING_BIT;
-
- if (ctx->Visual->SoftwareAlpha && ctx->Color.ColorMask[ACOMP]
- && ctx->Color.DrawBuffer != GL_NONE)
- ctx->RasterMask |= ALPHABUF_BIT;
-
- if ( ctx->Viewport.X<0
- || ctx->Viewport.X + ctx->Viewport.Width > ctx->DrawBuffer->Width
- || ctx->Viewport.Y<0
- || ctx->Viewport.Y + ctx->Viewport.Height > ctx->DrawBuffer->Height) {
- ctx->RasterMask |= WINCLIP_BIT;
- }
-
- /* If we're not drawing to exactly one color buffer set the
- * MULTI_DRAW_BIT flag. Also set it if we're drawing to no
- * buffers or the RGBA or CI mask disables all writes.
- */
-
- ctx->TriangleCaps &= ~DD_MULTIDRAW;
-
- if (ctx->Color.MultiDrawBuffer) {
- ctx->RasterMask |= MULTI_DRAW_BIT;
- ctx->TriangleCaps |= DD_MULTIDRAW;
- }
- else if (ctx->Color.DrawBuffer==GL_NONE) {
- ctx->RasterMask |= MULTI_DRAW_BIT;
- ctx->TriangleCaps |= DD_MULTIDRAW;
- }
- else if (ctx->Visual->RGBAflag && ctx->Color.ColorMask==0) {
- /* all RGBA channels disabled */
- ctx->RasterMask |= MULTI_DRAW_BIT;
- ctx->TriangleCaps |= DD_MULTIDRAW;
- ctx->Color.DrawDestMask = 0;
- }
- else if (!ctx->Visual->RGBAflag && ctx->Color.IndexMask==0) {
- /* all color index bits disabled */
- ctx->RasterMask |= MULTI_DRAW_BIT;
- ctx->TriangleCaps |= DD_MULTIDRAW;
- ctx->Color.DrawDestMask = 0;
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFinish");
+ if (ctx->Driver.Finish) {
+ (*ctx->Driver.Finish)( ctx );
}
}
-void gl_print_state( const char *msg, GLuint state )
-{
- fprintf(stderr,
- "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
- msg,
- state,
- (state & NEW_LIGHTING) ? "lighting, " : "",
- (state & NEW_RASTER_OPS) ? "raster-ops, " : "",
- (state & NEW_TEXTURING) ? "texturing, " : "",
- (state & NEW_POLYGON) ? "polygon, " : "",
- (state & NEW_DRVSTATE0) ? "driver-0, " : "",
- (state & NEW_DRVSTATE1) ? "driver-1, " : "",
- (state & NEW_DRVSTATE2) ? "driver-2, " : "",
- (state & NEW_DRVSTATE3) ? "driver-3, " : "",
- (state & NEW_MODELVIEW) ? "modelview, " : "",
- (state & NEW_PROJECTION) ? "projection, " : "",
- (state & NEW_TEXTURE_MATRIX) ? "texture-matrix, " : "",
- (state & NEW_USER_CLIP) ? "user-clip, " : "",
- (state & NEW_TEXTURE_ENV) ? "texture-env, " : "",
- (state & NEW_CLIENT_STATE) ? "client-state, " : "",
- (state & NEW_FOG) ? "fog, " : "",
- (state & NEW_NORMAL_TRANSFORM) ? "normal-transform, " : "",
- (state & NEW_VIEWPORT) ? "viewport, " : "",
- (state & NEW_TEXTURE_ENABLE) ? "texture-enable, " : "");
-}
-void gl_print_enable_flags( const char *msg, GLuint flags )
-{
- fprintf(stderr,
- "%s: (0x%x) %s%s%s%s%s%s%s%s%s%s%s\n",
- msg,
- flags,
- (flags & ENABLE_TEX0) ? "tex-0, " : "",
- (flags & ENABLE_TEX1) ? "tex-1, " : "",
- (flags & ENABLE_LIGHT) ? "light, " : "",
- (flags & ENABLE_FOG) ? "fog, " : "",
- (flags & ENABLE_USERCLIP) ? "userclip, " : "",
- (flags & ENABLE_TEXGEN0) ? "tex-gen-0, " : "",
- (flags & ENABLE_TEXGEN1) ? "tex-gen-1, " : "",
- (flags & ENABLE_TEXMAT0) ? "tex-mat-0, " : "",
- (flags & ENABLE_TEXMAT1) ? "tex-mat-1, " : "",
- (flags & ENABLE_NORMALIZE) ? "normalize, " : "",
- (flags & ENABLE_RESCALE) ? "rescale, " : "");
-}
-
-
-/*
- * If ctx->NewState is non-zero then this function MUST be called before
- * rendering any primitive. Basically, function pointers and miscellaneous
- * flags are updated to reflect the current state of the state machine.
- */
-void gl_update_state( GLcontext *ctx )
+void
+_mesa_Flush( void )
{
- GLuint i;
-
- if (MESA_VERBOSE & VERBOSE_STATE)
- gl_print_state("", ctx->NewState);
-
- if (ctx->NewState & NEW_CLIENT_STATE)
- gl_update_client_state( ctx );
-
- if ((ctx->NewState & NEW_TEXTURE_ENABLE) &&
- (ctx->Enabled & ENABLE_TEX_ANY) != ctx->Texture.Enabled)
- ctx->NewState |= NEW_TEXTURING | NEW_RASTER_OPS;
-
- if (ctx->NewState & NEW_TEXTURE_ENV) {
- if (ctx->Texture.Unit[0].EnvMode == ctx->Texture.Unit[0].LastEnvMode &&
- ctx->Texture.Unit[1].EnvMode == ctx->Texture.Unit[1].LastEnvMode)
- ctx->NewState &= ~NEW_TEXTURE_ENV;
- ctx->Texture.Unit[0].LastEnvMode = ctx->Texture.Unit[0].EnvMode;
- ctx->Texture.Unit[1].LastEnvMode = ctx->Texture.Unit[1].EnvMode;
- }
-
- if (ctx->NewState & NEW_TEXTURE_MATRIX) {
- ctx->Enabled &= ~(ENABLE_TEXMAT0|ENABLE_TEXMAT1);
-
- for (i=0; i < MAX_TEXTURE_UNITS; i++) {
- if (ctx->TextureMatrix[i].flags & MAT_DIRTY_ALL_OVER)
- {
- gl_matrix_analyze( &ctx->TextureMatrix[i] );
- ctx->TextureMatrix[i].flags &= ~MAT_DIRTY_DEPENDENTS;
-
- if (ctx->Texture.Unit[i].Enabled &&
- ctx->TextureMatrix[i].type != MATRIX_IDENTITY)
- ctx->Enabled |= ENABLE_TEXMAT0 << i;
- }
- }
- }
-
- if (ctx->NewState & (NEW_TEXTURING | NEW_TEXTURE_ENABLE)) {
- ctx->Texture.NeedNormals = GL_FALSE;
- gl_update_dirty_texobjs(ctx);
- ctx->Enabled &= ~(ENABLE_TEXGEN0|ENABLE_TEXGEN1);
- ctx->Texture.ReallyEnabled = 0;
-
- for (i=0; i < MAX_TEXTURE_UNITS; i++) {
- if (ctx->Texture.Unit[i].Enabled) {
- gl_update_texture_unit( ctx, &ctx->Texture.Unit[i] );
-
- ctx->Texture.ReallyEnabled |=
- ctx->Texture.Unit[i].ReallyEnabled<<(i*4);
-
- if (ctx->Texture.Unit[i].GenFlags != 0) {
- ctx->Enabled |= ENABLE_TEXGEN0 << i;
-
- if (ctx->Texture.Unit[i].GenFlags & TEXGEN_NEED_NORMALS)
- {
- ctx->Texture.NeedNormals = GL_TRUE;
- ctx->Texture.NeedEyeCoords = GL_TRUE;
- }
-
- if (ctx->Texture.Unit[i].GenFlags & TEXGEN_NEED_EYE_COORD)
- {
- ctx->Texture.NeedEyeCoords = GL_TRUE;
- }
- }
- }
- }
-
- ctx->Texture.Enabled = ctx->Enabled & ENABLE_TEX_ANY;
- ctx->NeedNormals = (ctx->Light.Enabled || ctx->Texture.NeedNormals);
- }
-
- if (ctx->NewState & (NEW_RASTER_OPS | NEW_LIGHTING | NEW_FOG)) {
-
-
- if (ctx->NewState & NEW_RASTER_OPS) {
- update_pixel_logic(ctx);
- update_pixel_masking(ctx);
- update_fog_mode(ctx);
- update_rasterflags(ctx);
- if (ctx->Driver.Dither) {
- (*ctx->Driver.Dither)( ctx, ctx->Color.DitherFlag );
- }
-
- /* Check if incoming colors can be modified during rasterization */
- if (ctx->Fog.Enabled ||
- ctx->Texture.Enabled ||
- ctx->Color.BlendEnabled ||
- ctx->Color.SWmasking ||
- ctx->Color.SWLogicOpEnabled) {
- ctx->MutablePixels = GL_TRUE;
- }
- else {
- ctx->MutablePixels = GL_FALSE;
- }
-
- /* update scissor region */
-
- ctx->DrawBuffer->Xmin = 0;
- ctx->DrawBuffer->Ymin = 0;
- ctx->DrawBuffer->Xmax = ctx->DrawBuffer->Width-1;
- ctx->DrawBuffer->Ymax = ctx->DrawBuffer->Height-1;
- if (ctx->Scissor.Enabled) {
- if (ctx->Scissor.X > ctx->DrawBuffer->Xmin) {
- ctx->DrawBuffer->Xmin = ctx->Scissor.X;
- }
- if (ctx->Scissor.Y > ctx->DrawBuffer->Ymin) {
- ctx->DrawBuffer->Ymin = ctx->Scissor.Y;
- }
- if (ctx->Scissor.X + ctx->Scissor.Width - 1 < ctx->DrawBuffer->Xmax) {
- ctx->DrawBuffer->Xmax = ctx->Scissor.X + ctx->Scissor.Width - 1;
- }
- if (ctx->Scissor.Y + ctx->Scissor.Height - 1 < ctx->DrawBuffer->Ymax) {
- ctx->DrawBuffer->Ymax = ctx->Scissor.Y + ctx->Scissor.Height - 1;
- }
- }
- }
-
- if (ctx->NewState & NEW_LIGHTING) {
- ctx->TriangleCaps &= ~(DD_TRI_LIGHT_TWOSIDE|DD_LIGHTING_CULL);
- if (ctx->Light.Enabled) {
- if (ctx->Light.Model.TwoSide)
- ctx->TriangleCaps |= (DD_TRI_LIGHT_TWOSIDE|DD_LIGHTING_CULL);
- gl_update_lighting(ctx);
- }
- }
+ GET_CURRENT_CONTEXT(ctx);
+ ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx, "glFlush");
+ if (ctx->Driver.Flush) {
+ (*ctx->Driver.Flush)( ctx );
}
-
- if (ctx->NewState & (NEW_POLYGON | NEW_LIGHTING)) {
-
- ctx->TriangleCaps &= ~DD_TRI_CULL_FRONT_BACK;
-
- if (ctx->NewState & NEW_POLYGON) {
- /* Setup CullBits bitmask */
- if (ctx->Polygon.CullFlag) {
- ctx->backface_sign = 1;
- switch(ctx->Polygon.CullFaceMode) {
- case GL_BACK:
- if(ctx->Polygon.FrontFace==GL_CCW)
- ctx->backface_sign = -1;
- ctx->Polygon.CullBits = 1;
- break;
- case GL_FRONT:
- if(ctx->Polygon.FrontFace!=GL_CCW)
- ctx->backface_sign = -1;
- ctx->Polygon.CullBits = 2;
- break;
- default:
- case GL_FRONT_AND_BACK:
- ctx->backface_sign = 0;
- ctx->Polygon.CullBits = 0;
- ctx->TriangleCaps |= DD_TRI_CULL_FRONT_BACK;
- break;
- }
- }
- else {
- ctx->Polygon.CullBits = 3;
- ctx->backface_sign = 0;
- }
-
- /* Any Polygon offsets enabled? */
- ctx->TriangleCaps &= ~DD_TRI_OFFSET;
-
- if (ctx->Polygon.OffsetPoint ||
- ctx->Polygon.OffsetLine ||
- ctx->Polygon.OffsetFill)
- ctx->TriangleCaps |= DD_TRI_OFFSET;
-
- /* reset Z offsets now */
- ctx->PointZoffset = 0.0;
- ctx->LineZoffset = 0.0;
- ctx->PolygonZoffset = 0.0;
- }
- }
-
- if (ctx->NewState & ~(NEW_CLIENT_STATE|
- NEW_DRIVER_STATE|NEW_USER_CLIP|
- NEW_POLYGON))
- gl_update_clipmask(ctx);
-
- if (ctx->NewState & (NEW_LIGHTING|
- NEW_RASTER_OPS|
- NEW_TEXTURING|
- NEW_TEXTURE_ENABLE|
- NEW_TEXTURE_ENV|
- NEW_POLYGON|
- NEW_DRVSTATE0|
- NEW_DRVSTATE1|
- NEW_DRVSTATE2|
- NEW_DRVSTATE3|
- NEW_USER_CLIP))
- {
- ctx->IndirectTriangles = ctx->TriangleCaps & ~ctx->Driver.TriangleCaps;
- ctx->IndirectTriangles |= DD_SW_RASTERIZE;
-
- if (MESA_VERBOSE&VERBOSE_CULL)
- gl_print_tri_caps("initial indirect tris", ctx->IndirectTriangles);
-
- ctx->Driver.PointsFunc = NULL;
- ctx->Driver.LineFunc = NULL;
- ctx->Driver.TriangleFunc = NULL;
- ctx->Driver.QuadFunc = NULL;
- ctx->Driver.RectFunc = NULL;
- ctx->Driver.RenderVBClippedTab = NULL;
- ctx->Driver.RenderVBCulledTab = NULL;
- ctx->Driver.RenderVBRawTab = NULL;
-
- /*
- * Here the driver sets up all the ctx->Driver function pointers to
- * it's specific, private functions.
- */
- ctx->Driver.UpdateState(ctx);
-
- if (MESA_VERBOSE&VERBOSE_CULL)
- gl_print_tri_caps("indirect tris", ctx->IndirectTriangles);
-
- /*
- * In case the driver didn't hook in an optimized point, line or
- * triangle function we'll now select "core/fallback" point, line
- * and triangle functions.
- */
- if (ctx->IndirectTriangles & DD_SW_RASTERIZE) {
- gl_set_point_function(ctx);
- gl_set_line_function(ctx);
- gl_set_triangle_function(ctx);
- gl_set_quad_function(ctx);
-
- if ((ctx->IndirectTriangles &
- (DD_TRI_SW_RASTERIZE|DD_QUAD_SW_RASTERIZE|DD_TRI_CULL)) ==
- (DD_TRI_SW_RASTERIZE|DD_QUAD_SW_RASTERIZE|DD_TRI_CULL))
- ctx->IndirectTriangles &= ~DD_TRI_CULL;
- }
-
- if (MESA_VERBOSE&VERBOSE_CULL)
- gl_print_tri_caps("indirect tris 2", ctx->IndirectTriangles);
-
- gl_set_render_vb_function(ctx);
- }
-
- /* Should only be calc'd when !need_eye_coords and not culling.
- */
- if (ctx->NewState & (NEW_MODELVIEW|NEW_PROJECTION)) {
- if (ctx->NewState & NEW_MODELVIEW) {
- gl_matrix_analyze( &ctx->ModelView );
- ctx->ProjectionMatrix.flags &= ~MAT_DIRTY_DEPENDENTS;
- }
-
- if (ctx->NewState & NEW_PROJECTION) {
- gl_matrix_analyze( &ctx->ProjectionMatrix );
- ctx->ProjectionMatrix.flags &= ~MAT_DIRTY_DEPENDENTS;
-
- if (ctx->Transform.AnyClip) {
- gl_update_userclip( ctx );
- }
- }
-
- gl_calculate_model_project_matrix( ctx );
- ctx->ModelProjectWinMatrixUptodate = 0;
- }
-
- /* Figure out whether we can light in object space or not. If we
- * can, find the current positions of the lights in object space
- */
- if ((ctx->Enabled & (ENABLE_POINT_ATTEN | ENABLE_LIGHT | ENABLE_FOG |
- ENABLE_TEXGEN0 | ENABLE_TEXGEN1)) &&
- (ctx->NewState & (NEW_LIGHTING |
- NEW_FOG |
- NEW_MODELVIEW |
- NEW_PROJECTION |
- NEW_TEXTURING |
- NEW_RASTER_OPS |
- NEW_USER_CLIP)))
- {
- GLboolean oldcoord, oldnorm;
-
- oldcoord = ctx->NeedEyeCoords;
- oldnorm = ctx->NeedEyeNormals;
-
- ctx->NeedNormals = (ctx->Light.Enabled || ctx->Texture.NeedNormals);
- ctx->NeedEyeCoords = ((ctx->Fog.Enabled && ctx->Hint.Fog != GL_NICEST) ||
- ctx->Point.Attenuated);
- ctx->NeedEyeNormals = GL_FALSE;
-
- if (ctx->Light.Enabled) {
- if (ctx->Light.Flags & LIGHT_POSITIONAL) {
- /* Need length for attenuation */
- if (!TEST_MAT_FLAGS( &ctx->ModelView, MAT_FLAGS_LENGTH_PRESERVING))
- ctx->NeedEyeCoords = GL_TRUE;
- } else if (ctx->Light.NeedVertices) {
- /* Need angle for spot calculations */
- if (!TEST_MAT_FLAGS( &ctx->ModelView, MAT_FLAGS_ANGLE_PRESERVING))
- ctx->NeedEyeCoords = GL_TRUE;
- }
- ctx->NeedEyeNormals = ctx->NeedEyeCoords;
- }
- if (ctx->Texture.Enabled || ctx->RenderMode==GL_FEEDBACK) {
- if (ctx->Texture.NeedEyeCoords) ctx->NeedEyeCoords = GL_TRUE;
- if (ctx->Texture.NeedNormals)
- ctx->NeedNormals = ctx->NeedEyeNormals = GL_TRUE;
- }
-
- ctx->vb_proj_matrix = &ctx->ModelProjectMatrix;
-
- if (ctx->NeedEyeCoords)
- ctx->vb_proj_matrix = &ctx->ProjectionMatrix;
-
- if (ctx->Light.Enabled) {
- gl_update_lighting_function(ctx);
-
- if ( (ctx->NewState & NEW_LIGHTING) ||
- ((ctx->NewState & (NEW_MODELVIEW| NEW_PROJECTION)) &&
- !ctx->NeedEyeCoords) ||
- oldcoord != ctx->NeedEyeCoords ||
- oldnorm != ctx->NeedEyeNormals) {
- gl_compute_light_positions(ctx);
- }
-
- ctx->rescale_factor = 1.0F;
-
- if (ctx->ModelView.flags & (MAT_FLAG_UNIFORM_SCALE |
- MAT_FLAG_GENERAL_SCALE |
- MAT_FLAG_GENERAL_3D |
- MAT_FLAG_GENERAL) )
-
- {
- GLfloat *m = ctx->ModelView.inv;
- GLfloat f = m[2]*m[2] + m[6]*m[6] + m[10]*m[10];
- if (f > 1e-12 && (f-1)*(f-1) > 1e-12)
- ctx->rescale_factor = 1.0/GL_SQRT(f);
- }
- }
-
- gl_update_normal_transform( ctx );
- }
-
- gl_update_pipelines(ctx);
- ctx->NewState = 0;
}
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