Imported the Savage DRI driver from the savage-2-0-0-branch of DRI CVS

[mesa.git] / src / mesa / main / drawpix.c

diff --git a/src/mesa/main/drawpix.c b/src/mesa/main/drawpix.c
index 1c37f5b9a2cbcf699f4cee4829e7148a2023dd52..12b9f2930d898dbfdc75ddd13cc841ac67f51e5a 100644 (file)
--- a/src/mesa/main/drawpix.c
+++ b/src/mesa/main/drawpix.c
@@ -1,4 +1,3 @@
-/* $Id: drawpix.c,v 1.60 2002/05/09 21:54:16 brianp Exp $ */
 
 /*
  * Mesa 3-D graphics library
@@ -24,28 +23,22 @@
  * 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 )
 {
@@ -94,36 +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 (width < 0 || height < 0) {
-      _mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(width or height < 0)" );
-      return;
-   }
-
-   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 )
 {
@@ -171,9 +135,40 @@ _mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
    }
 }
 
+#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);
+
+   ctx->Driver.ReadPixels(ctx, x, y, width, height,
+                         format, type, &ctx->Pack, pixels);
+}
+
+
+
 
 
-void
+void GLAPIENTRY
 _mesa_Bitmap( GLsizei width, GLsizei height,
               GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
               const GLubyte *bitmap )
@@ -204,6 +199,7 @@ _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) {
       if (ctx->Current.RasterPosValid) {
         FLUSH_CURRENT(ctx, 0);
@@ -215,11 +211,78 @@ _mesa_Bitmap( GLsizei width, GLsizei height,
                                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