X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fdrawpix.c;h=12b9f2930d898dbfdc75ddd13cc841ac67f51e5a;hb=263581bba4d61291c54313648063a30c47106f0b;hp=1b069078833811248105ca96c3cf3683b2c3ca20;hpb=acc722d4b890da7ed0ede24751e2bcaf28cc1468;p=mesa.git

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index 1b069078833..12b9f2930d8 100644
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -1,10 +1,9 @@
-/* $Id: drawpix.c,v 1.56 2001/06/26 21:15:35 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
- * Version:  3.5
+ * Version:  4.1
  *
- * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
+ * Copyright (C) 1999-2002  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"),
@@ -24,34 +23,33 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-
-#ifdef PC_HEADER
-#include "all.h"
-#else
 #include "glheader.h"
+#include "imports.h"
 #include "colormac.h"
 #include "context.h"
 #include "drawpix.h"
 #include "feedback.h"
 #include "macros.h"
-#include "mem.h"
-#include "mmath.h"
 #include "state.h"
 #include "mtypes.h"
-#endif
-
 
+#if _HAVE_FULL_GL
 
 /*
  * Execute glDrawPixels
  */
-void
+void GLAPIENTRY
 _mesa_DrawPixels( GLsizei width, GLsizei height,
                   GLenum format, GLenum type, const GLvoid *pixels )
 {
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
+      return;
+   }
+
    if (ctx->RenderMode==GL_RENDER) {
       GLint x, y;
       if (!pixels || !ctx->Current.RasterPosValid) {
@@ -71,21 +69,15 @@ _mesa_DrawPixels( GLsizei width, GLsizei height,
 			     &ctx->Unpack, pixels);
    }
    else if (ctx->RenderMode==GL_FEEDBACK) {
+      /* Feedback the current raster pos info */
       if (ctx->Current.RasterPosValid) {
-	 GLfloat texcoord[4], invq;
-
-	 FLUSH_CURRENT(ctx, 0);
-         invq = 1.0F / ctx->Current.Texcoord[0][3];
-         texcoord[0] = ctx->Current.Texcoord[0][0] * invq;
-         texcoord[1] = ctx->Current.Texcoord[0][1] * invq;
-         texcoord[2] = ctx->Current.Texcoord[0][2] * invq;
-         texcoord[3] = ctx->Current.Texcoord[0][3];
+	 FLUSH_CURRENT( ctx, 0 );
          FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
          _mesa_feedback_vertex( ctx,
 				ctx->Current.RasterPos,
-				ctx->Current.Color,
-				ctx->Current.Index, 
-				texcoord );
+				ctx->Current.RasterColor,
+				ctx->Current.RasterIndex,
+				ctx->Current.RasterTexCoords[0] );
       }
    }
    else if (ctx->RenderMode==GL_SELECT) {
@@ -95,31 +87,7 @@ _mesa_DrawPixels( GLsizei width, GLsizei height,
    }
 }
 
-
-
-void
-_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
-		  GLenum format, GLenum type, GLvoid *pixels )
-{
-   GET_CURRENT_CONTEXT(ctx);
-   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
-
-   if (!pixels) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
-      return;
-   }
-
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
-   ctx->Driver.ReadPixels(ctx, x, y, width, height,
-			  format, type, &ctx->Pack, pixels);
-
-}
-
-
-
-void
+void GLAPIENTRY
 _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
                   GLenum type )
 {
@@ -128,7 +96,7 @@ _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
    if (width < 0 || height < 0) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels" );
+      _mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)" );
       return;
    }
 
@@ -152,22 +120,55 @@ _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
 			      type );
    }
    else if (ctx->RenderMode == GL_FEEDBACK) {
-      FLUSH_CURRENT( ctx, 0 );
-      FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
-      _mesa_feedback_vertex( ctx, 
-			     ctx->Current.RasterPos,
-			     ctx->Current.Color, 
-			     ctx->Current.Index,
-			     ctx->Current.Texcoord[0] );
+      if (ctx->Current.RasterPosValid) {
+         FLUSH_CURRENT( ctx, 0 );
+         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
+         _mesa_feedback_vertex( ctx, 
+                                ctx->Current.RasterPos,
+                                ctx->Current.RasterColor,
+                                ctx->Current.RasterIndex,
+                                ctx->Current.RasterTexCoords[0] );
+      }
    }
    else if (ctx->RenderMode == GL_SELECT) {
       _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
    }
 }
 
+#endif
+
+
+
+void GLAPIENTRY
+_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
+		  GLenum format, GLenum type, GLvoid *pixels )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE,
+                   "glReadPixels(width=%d height=%d)", width, height );
+      return;
+   }
+
+   if (!pixels) {
+      _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
+      return;
+   }
 
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
 
-void
+   ctx->Driver.ReadPixels(ctx, x, y, width, height,
+			  format, type, &ctx->Pack, pixels);
+}
+
+
+
+
+
+void GLAPIENTRY
 _mesa_Bitmap( GLsizei width, GLsizei height,
               GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
               const GLubyte *bitmap )
@@ -175,10 +176,8 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
    GET_CURRENT_CONTEXT(ctx);
    ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
 
-
-   /* Error checking */
    if (width < 0 || height < 0) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap" );
+      _mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
       return;
    }
 
@@ -200,31 +199,90 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
 	 ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
       }
    }
+#if _HAVE_FULL_GL
    else if (ctx->RenderMode==GL_FEEDBACK) {
-      GLfloat color[4], texcoord[4], invq;
-
-      color[0] = ctx->Current.RasterColor[0];
-      color[1] = ctx->Current.RasterColor[1];
-      color[2] = ctx->Current.RasterColor[2];
-      color[3] = ctx->Current.RasterColor[3];
-      if (ctx->Current.Texcoord[0][3] == 0.0)
-         invq = 1.0F;
-      else
-         invq = 1.0F / ctx->Current.RasterTexCoord[3];
-      texcoord[0] = ctx->Current.RasterTexCoord[0] * invq;
-      texcoord[1] = ctx->Current.RasterTexCoord[1] * invq;
-      texcoord[2] = ctx->Current.RasterTexCoord[2] * invq;
-      texcoord[3] = ctx->Current.RasterTexCoord[3];
-      FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
-      _mesa_feedback_vertex( ctx,
-                          ctx->Current.RasterPos,
-			  color, ctx->Current.RasterIndex, texcoord );
+      if (ctx->Current.RasterPosValid) {
+	 FLUSH_CURRENT(ctx, 0);
+         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
+         _mesa_feedback_vertex( ctx,
+				ctx->Current.RasterPos,
+				ctx->Current.RasterColor,
+				ctx->Current.RasterIndex, 
+				ctx->Current.RasterTexCoords[0] );
+      }
    }
-   else if (ctx->RenderMode==GL_SELECT) {
+   else {
+      ASSERT(ctx->RenderMode == GL_SELECT);
       /* Bitmaps don't generate selection hits.  See appendix B of 1.1 spec. */
    }
+#endif
 
    /* update raster position */
    ctx->Current.RasterPos[0] += xmove;
    ctx->Current.RasterPos[1] += ymove;
 }
+
+
+
+#if 0  /* experimental */
+/*
+ * Execute glDrawDepthPixelsMESA().  This function accepts both a color
+ * image and depth (Z) image.  Rasterization produces fragments with
+ * color and Z taken from these images.  This function is intended for
+ * Z-compositing.  Normally, this operation requires two glDrawPixels
+ * calls with stencil testing.
+ */
+void GLAPIENTRY
+_mesa_DrawDepthPixelsMESA( GLsizei width, GLsizei height,
+                           GLenum colorFormat, GLenum colorType,
+                           const GLvoid *colors,
+                           GLenum depthType, const GLvoid *depths )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
+
+   if (width < 0 || height < 0) {
+      _mesa_error( ctx, GL_INVALID_VALUE,
+                   "glDrawDepthPixelsMESA(width or height < 0" );
+      return;
+   }
+
+   if (ctx->RenderMode==GL_RENDER) {
+      GLint x, y;
+      if (!colors || !depths || !ctx->Current.RasterPosValid) {
+	 return;
+      }
+
+      if (ctx->NewState) {
+         _mesa_update_state(ctx);
+      }
+
+      /* Round, to satisfy conformance tests (matches SGI's OpenGL) */
+      x = IROUND(ctx->Current.RasterPos[0]);
+      y = IROUND(ctx->Current.RasterPos[1]);
+
+      ctx->OcclusionResult = GL_TRUE;
+      ctx->Driver.DrawDepthPixelsMESA(ctx, x, y, width, height,
+                                      colorFormat, colorType, colors,
+                                      depthType, depths, &ctx->Unpack);
+   }
+   else if (ctx->RenderMode==GL_FEEDBACK) {
+      /* Feedback the current raster pos info */
+      if (ctx->Current.RasterPosValid) {
+	 FLUSH_CURRENT( ctx, 0 );
+         FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
+         _mesa_feedback_vertex( ctx,
+				ctx->Current.RasterPos,
+				ctx->Current.RasterColor,
+				ctx->Current.RasterIndex,
+				ctx->Current.RasterTexCoords[0] );
+      }
+   }
+   else if (ctx->RenderMode==GL_SELECT) {
+      if (ctx->Current.RasterPosValid) {
+         _mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
+      }
+   }
+}
+
+#endif