X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fapi_validate.c;h=150bc3886cfee566b9d95cd52da0b6685863cfdb;hb=cbd33e7d3a940e4e7a7bc435f2256714115f3040;hp=507e21fe81e13252acbce818a108eaa4e4535795;hpb=d39fd9f641df7da77ff6158c5aa249dd90bf420d;p=mesa.git

diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c
index 507e21fe81e..150bc3886cf 100644
--- a/src/mesa/main/api_validate.c
+++ b/src/mesa/main/api_validate.c
@@ -28,8 +28,7 @@
 #include "context.h"
 #include "imports.h"
 #include "mtypes.h"
-#include "state.h"
-
+#include "vbo/vbo.h"
 
 
 /**
@@ -106,20 +105,71 @@ check_valid_to_render(GLcontext *ctx, const char *function)
       return GL_FALSE;
    }
 
+   switch (ctx->API) {
 #if FEATURE_es2_glsl
-   /* For ES2, we can draw if any vertex array is enabled (and we should
-    * always have a vertex program/shader).
-    */
-   if (ctx->Array.ArrayObj->_Enabled == 0x0 || !ctx->VertexProgram._Current)
-      return GL_FALSE;
-#else
-   /* For regular OpenGL, only draw if we have vertex positions (regardless
-    * of whether or not we have a vertex program/shader).
+   case API_OPENGLES2:
+      /* For ES2, we can draw if any vertex array is enabled (and we
+       * should always have a vertex program/shader). */
+      if (ctx->Array.ArrayObj->_Enabled == 0x0 || !ctx->VertexProgram._Current)
+	 return GL_FALSE;
+      break;
+#endif
+
+#if FEATURE_ES1 || FEATURE_GL
+   case API_OPENGLES:
+   case API_OPENGL:
+      /* For regular OpenGL, only draw if we have vertex positions
+       * (regardless of whether or not we have a vertex program/shader). */
+      if (!ctx->Array.ArrayObj->Vertex.Enabled &&
+	  !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+	 return GL_FALSE;
+      break;
+#endif
+
+   default:
+      ASSERT_NO_FEATURE();
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Do bounds checking on array element indexes.  Check that the vertices
+ * pointed to by the indices don't lie outside buffer object bounds.
+ * \return GL_TRUE if OK, GL_FALSE if any indexed vertex goes is out of bounds
+ */
+static GLboolean
+check_index_bounds(GLcontext *ctx, GLsizei count, GLenum type,
+		   const GLvoid *indices, GLint basevertex)
+{
+   struct _mesa_prim prim;
+   struct _mesa_index_buffer ib;
+   GLuint min, max;
+
+   /* Only the X Server needs to do this -- otherwise, accessing outside
+    * array/BO bounds allows application termination.
     */
-   if (!ctx->Array.ArrayObj->Vertex.Enabled &&
-       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
+   if (!ctx->Const.CheckArrayBounds)
+      return GL_TRUE;
+
+   memset(&prim, 0, sizeof(prim));
+   prim.count = count;
+
+   memset(&ib, 0, sizeof(ib));
+   ib.type = type;
+   ib.ptr = indices;
+   ib.obj = ctx->Array.ElementArrayBufferObj;
+
+   vbo_get_minmax_index(ctx, &prim, &ib, &min, &max);
+
+   if ((int)(min + basevertex) < 0 ||
+       max + basevertex > ctx->Array.ArrayObj->_MaxElement) {
+      /* the max element is out of bounds of one or more enabled arrays */
+      _mesa_warning(ctx, "glDrawElements() index=%u is out of bounds (max=%u)",
+                    max, ctx->Array.ArrayObj->_MaxElement);
       return GL_FALSE;
-#endif
+   }
 
    return GL_TRUE;
 }
@@ -133,9 +183,9 @@ check_valid_to_render(GLcontext *ctx, const char *function)
 GLboolean
 _mesa_validate_DrawElements(GLcontext *ctx,
 			    GLenum mode, GLsizei count, GLenum type,
-			    const GLvoid *indices)
+			    const GLvoid *indices, GLint basevertex)
 {
-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx,  GL_FALSE);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
    if (count <= 0) {
       if (count < 0)
@@ -156,9 +206,6 @@ _mesa_validate_DrawElements(GLcontext *ctx,
       return GL_FALSE;
    }
 
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
    if (!check_valid_to_render(ctx, "glDrawElements"))
       return GL_FALSE;
 
@@ -177,17 +224,8 @@ _mesa_validate_DrawElements(GLcontext *ctx,
          return GL_FALSE;
    }
 
-   if (ctx->Const.CheckArrayBounds) {
-      /* find max array index */
-      GLuint max = _mesa_max_buffer_index(ctx, count, type, indices,
-                                          ctx->Array.ElementArrayBufferObj);
-      if (max >= ctx->Array.ArrayObj->_MaxElement) {
-         /* the max element is out of bounds of one or more enabled arrays */
-         _mesa_warning(ctx, "glDrawElements() index=%u is "
-                       "out of bounds (max=%u)", max, ctx->Array.ArrayObj->_MaxElement);
-         return GL_FALSE;
-      }
-   }
+   if (!check_index_bounds(ctx, count, type, indices, basevertex))
+      return GL_FALSE;
 
    return GL_TRUE;
 }
@@ -202,7 +240,7 @@ GLboolean
 _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
 				 GLuint start, GLuint end,
 				 GLsizei count, GLenum type,
-				 const GLvoid *indices)
+				 const GLvoid *indices, GLint basevertex)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
 
@@ -229,9 +267,6 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
       return GL_FALSE;
    }
 
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
    if (!check_valid_to_render(ctx, "glDrawRangeElements"))
       return GL_FALSE;
 
@@ -250,14 +285,8 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
          return GL_FALSE;
    }
 
-   if (ctx->Const.CheckArrayBounds) {
-      GLuint max = _mesa_max_buffer_index(ctx, count, type, indices,
-                                          ctx->Array.ElementArrayBufferObj);
-      if (max >= ctx->Array.ArrayObj->_MaxElement) {
-         /* the max element is out of bounds of one or more enabled arrays */
-         return GL_FALSE;
-      }
-   }
+   if (!check_index_bounds(ctx, count, type, indices, basevertex))
+      return GL_FALSE;
 
    return GL_TRUE;
 }
@@ -285,9 +314,6 @@ _mesa_validate_DrawArrays(GLcontext *ctx,
       return GL_FALSE;
    }
 
-   if (ctx->NewState)
-      _mesa_update_state(ctx);
-
    if (!check_valid_to_render(ctx, "glDrawArrays"))
       return GL_FALSE;
 
@@ -298,3 +324,108 @@ _mesa_validate_DrawArrays(GLcontext *ctx,
 
    return GL_TRUE;
 }
+
+
+GLboolean
+_mesa_validate_DrawArraysInstanced(GLcontext *ctx, GLenum mode, GLint first,
+                                   GLsizei count, GLsizei primcount)
+{
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+   if (count <= 0) {
+      if (count < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawArraysInstanced(count=%d)", count);
+      return GL_FALSE;
+   }
+
+   if (mode > GL_POLYGON) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glDrawArraysInstanced(mode=0x%x)", mode);
+      return GL_FALSE;
+   }
+
+   if (primcount <= 0) {
+      if (primcount < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawArraysInstanced(primcount=%d)", primcount);
+      return GL_FALSE;
+   }
+
+   if (!check_valid_to_render(ctx, "glDrawArraysInstanced(invalid to render)"))
+      return GL_FALSE;
+
+   if (ctx->CompileFlag) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "glDrawArraysInstanced(display list");
+      return GL_FALSE;
+   }
+
+   if (ctx->Const.CheckArrayBounds) {
+      if (first + count > (GLint) ctx->Array.ArrayObj->_MaxElement)
+         return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+
+GLboolean
+_mesa_validate_DrawElementsInstanced(GLcontext *ctx,
+                                     GLenum mode, GLsizei count, GLenum type,
+                                     const GLvoid *indices, GLsizei primcount)
+{
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+
+   if (count <= 0) {
+      if (count < 0)
+	 _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawElementsInstanced(count=%d)", count);
+      return GL_FALSE;
+   }
+
+   if (mode > GL_POLYGON) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glDrawElementsInstanced(mode = 0x%x)", mode);
+      return GL_FALSE;
+   }
+
+   if (type != GL_UNSIGNED_INT &&
+       type != GL_UNSIGNED_BYTE &&
+       type != GL_UNSIGNED_SHORT) {
+      _mesa_error(ctx, GL_INVALID_ENUM,
+                  "glDrawElementsInstanced(type=0x%x)", type);
+      return GL_FALSE;
+   }
+
+   if (primcount <= 0) {
+      if (primcount < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawElementsInstanced(primcount=%d)", primcount);
+      return GL_FALSE;
+   }
+
+   if (!check_valid_to_render(ctx, "glDrawElementsInstanced"))
+      return GL_FALSE;
+
+   /* Vertex buffer object tests */
+   if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
+      /* use indices in the buffer object */
+      /* make sure count doesn't go outside buffer bounds */
+      if (index_bytes(type, count) > ctx->Array.ElementArrayBufferObj->Size) {
+         _mesa_warning(ctx,
+                       "glDrawElementsInstanced index out of buffer bounds");
+         return GL_FALSE;
+      }
+   }
+   else {
+      /* not using a VBO */
+      if (!indices)
+         return GL_FALSE;
+   }
+
+   if (!check_index_bounds(ctx, count, type, indices, 0))
+      return GL_FALSE;
+
+   return GL_TRUE;
+}