X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fmesa%2Fmain%2Fapi_validate.c;h=6f025080038c534f43e49876cacf9c45d1b7dbb8;hb=27d70b7266cc5e8562b4cccae763976834eb0ce2;hp=013048bbc1694eb8e0ea201221cdd6e4e307f589;hpb=a38859569dca1d8b139c4c451499bf6e328379e9;p=mesa.git

diff --git a/src/mesa/main/api_validate.c b/src/mesa/main/api_validate.c
index 013048bbc16..6f025080038 100644
--- a/src/mesa/main/api_validate.c
+++ b/src/mesa/main/api_validate.c
@@ -22,14 +22,17 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
+#include <stdbool.h>
 #include "glheader.h"
 #include "api_validate.h"
 #include "bufferobj.h"
 #include "context.h"
 #include "imports.h"
+#include "mfeatures.h"
 #include "mtypes.h"
-#include "state.h"
+#include "enums.h"
 #include "vbo/vbo.h"
+#include <stdbool.h>
 
 
 /**
@@ -55,7 +58,7 @@ index_bytes(GLenum type, GLsizei count)
  * Find the max index in the given element/index buffer
  */
 GLuint
-_mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
+_mesa_max_buffer_index(struct gl_context *ctx, GLuint count, GLenum type,
                        const void *indices,
                        struct gl_buffer_object *elementBuf)
 {
@@ -65,8 +68,8 @@ _mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
 
    if (_mesa_is_bufferobj(elementBuf)) {
       /* elements are in a user-defined buffer object.  need to map it */
-      map = ctx->Driver.MapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER,
-                                  GL_READ_ONLY, elementBuf);
+      map = ctx->Driver.MapBufferRange(ctx, 0, elementBuf->Size,
+				       GL_MAP_READ_BIT, elementBuf);
       /* Actual address is the sum of pointers */
       indices = (const GLvoid *) ADD_POINTERS(map, (const GLubyte *) indices);
    }
@@ -89,7 +92,7 @@ _mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
    }
 
    if (map) {
-      ctx->Driver.UnmapBuffer(ctx, GL_ELEMENT_ARRAY_BUFFER_ARB, elementBuf);
+      ctx->Driver.UnmapBuffer(ctx, elementBuf);
    }
 
    return max;
@@ -100,32 +103,65 @@ _mesa_max_buffer_index(GLcontext *ctx, GLuint count, GLenum type,
  * Check if OK to draw arrays/elements.
  */
 static GLboolean
-check_valid_to_render(GLcontext *ctx, const char *function)
+check_valid_to_render(struct gl_context *ctx, const char *function)
 {
    if (!_mesa_valid_to_render(ctx, function)) {
       return GL_FALSE;
    }
 
-#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).
-    */
-   if (!ctx->Array.ArrayObj->Vertex.Enabled &&
-       !ctx->Array.ArrayObj->VertexAttrib[0].Enabled)
-      return GL_FALSE;
-#endif
+   switch (ctx->API) {
+   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;
+
+   case API_OPENGLES:
+      /* For OpenGL ES, only draw if we have vertex positions
+       */
+      if (!ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled)
+	 return GL_FALSE;
+      break;
+
+   case API_OPENGL:
+   case API_OPENGL_CORE:
+      {
+         const struct gl_shader_program *vsProg =
+            ctx->Shader.CurrentVertexProgram;
+         GLboolean haveVertexShader = (vsProg && vsProg->LinkStatus);
+         GLboolean haveVertexProgram = ctx->VertexProgram._Enabled;
+         if (haveVertexShader || haveVertexProgram) {
+            /* Draw regardless of whether or not we have any vertex arrays.
+             * (Ex: could draw a point using a constant vertex pos)
+             */
+            return GL_TRUE;
+         }
+         else {
+            /* Draw if we have vertex positions (GL_VERTEX_ARRAY or generic
+             * array [0]).
+             */
+            return (ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POS].Enabled ||
+                    ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_GENERIC0].Enabled);
+         }
+      }
+      break;
+
+   default:
+      assert(!"Invalid API value in check_valid_to_render()");
+   }
 
    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,
+check_index_bounds(struct gl_context *ctx, GLsizei count, GLenum type,
 		   const GLvoid *indices, GLint basevertex)
 {
    struct _mesa_prim prim;
@@ -144,32 +180,141 @@ check_index_bounds(GLcontext *ctx, GLsizei count, GLenum type,
    memset(&ib, 0, sizeof(ib));
    ib.type = type;
    ib.ptr = indices;
-   ib.obj = ctx->Array.ElementArrayBufferObj;
+   ib.obj = ctx->Array.ArrayObj->ElementArrayBufferObj;
 
-   vbo_get_minmax_index(ctx, &prim, &ib, &min, &max);
+   vbo_get_minmax_indices(ctx, &prim, &ib, &min, &max, 1);
 
-   if (min + basevertex < 0 ||
-       max + basevertex > ctx->Array.ArrayObj->_MaxElement) {
+   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);
+      _mesa_warning(ctx, "glDrawElements() index=%u is out of bounds (max=%u)",
+                    max, ctx->Array.ArrayObj->_MaxElement);
+      return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Is 'mode' a valid value for glBegin(), glDrawArrays(), glDrawElements(),
+ * etc?  The set of legal values depends on whether geometry shaders/programs
+ * are supported.
+ */
+GLboolean
+_mesa_valid_prim_mode(struct gl_context *ctx, GLenum mode, const char *name)
+{
+   bool valid_enum;
+
+   switch (mode) {
+   case GL_POINTS:
+   case GL_LINES:
+   case GL_LINE_LOOP:
+   case GL_LINE_STRIP:
+   case GL_TRIANGLES:
+   case GL_TRIANGLE_STRIP:
+   case GL_TRIANGLE_FAN:
+      valid_enum = true;
+      break;
+   case GL_QUADS:
+   case GL_QUAD_STRIP:
+   case GL_POLYGON:
+      valid_enum = (ctx->API == API_OPENGL);
+      break;
+   case GL_LINES_ADJACENCY:
+   case GL_LINE_STRIP_ADJACENCY:
+   case GL_TRIANGLES_ADJACENCY:
+   case GL_TRIANGLE_STRIP_ADJACENCY:
+      valid_enum = _mesa_is_desktop_gl(ctx)
+         && ctx->Extensions.ARB_geometry_shader4;
+      break;
+   default:
+      valid_enum = false;
+      break;
+   }
+
+   if (!valid_enum) {
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(mode=%x)", name, mode);
       return GL_FALSE;
    }
 
+   /* From the GL_EXT_transform_feedback spec:
+    *
+    *     "The error INVALID_OPERATION is generated if Begin, or any command
+    *      that performs an explicit Begin, is called when:
+    *
+    *      * a geometry shader is not active and <mode> does not match the
+    *        allowed begin modes for the current transform feedback state as
+    *        given by table X.1.
+    *
+    *      * a geometry shader is active and the output primitive type of the
+    *        geometry shader does not match the allowed begin modes for the
+    *        current transform feedback state as given by table X.1.
+    *
+    */
+   if (ctx->TransformFeedback.CurrentObject->Active &&
+       !ctx->TransformFeedback.CurrentObject->Paused) {
+      GLboolean pass = GL_TRUE;
+
+      switch (mode) {
+      case GL_POINTS:
+         pass = ctx->TransformFeedback.Mode == GL_POINTS;
+	 break;
+      case GL_LINES:
+      case GL_LINE_STRIP:
+      case GL_LINE_LOOP:
+         pass = ctx->TransformFeedback.Mode == GL_LINES;
+	 break;
+      default:
+         pass = ctx->TransformFeedback.Mode == GL_TRIANGLES;
+	 break;
+      }
+      if (!pass) {
+	 _mesa_error(ctx, GL_INVALID_OPERATION,
+		     "%s(mode=%s vs transform feedback %s)",
+		     name,
+		     _mesa_lookup_prim_by_nr(mode),
+		     _mesa_lookup_prim_by_nr(ctx->TransformFeedback.Mode));
+	 return GL_FALSE;
+      }
+   }
+
    return GL_TRUE;
 }
 
+/**
+ * Verify that the element type is valid.
+ *
+ * Generates \c GL_INVALID_ENUM and returns \c false if it is not.
+ */
+static bool
+valid_elements_type(struct gl_context *ctx, GLenum type, const char *name)
+{
+   switch (type) {
+   case GL_UNSIGNED_BYTE:
+   case GL_UNSIGNED_SHORT:
+   case GL_UNSIGNED_INT:
+      return true;
+
+   default:
+      _mesa_error(ctx, GL_INVALID_ENUM, "%s(type = %s)", name,
+                  _mesa_lookup_enum_by_nr(type));
+      return false;
+   }
+}
+
 /**
  * Error checking for glDrawElements().  Includes parameter checking
  * and VBO bounds checking.
  * \return GL_TRUE if OK to render, GL_FALSE if error found
  */
 GLboolean
-_mesa_validate_DrawElements(GLcontext *ctx,
+_mesa_validate_DrawElements(struct gl_context *ctx,
 			    GLenum mode, GLsizei count, GLenum type,
 			    const GLvoid *indices, GLint basevertex)
 {
-   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx,  GL_FALSE);
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
 
    if (count <= 0) {
       if (count < 0)
@@ -177,27 +322,21 @@ _mesa_validate_DrawElements(GLcontext *ctx,
       return GL_FALSE;
    }
 
-   if (mode > GL_POLYGON) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(mode)" );
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawElements")) {
       return GL_FALSE;
    }
 
-   if (type != GL_UNSIGNED_INT &&
-       type != GL_UNSIGNED_BYTE &&
-       type != GL_UNSIGNED_SHORT)
-   {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawElements(type)" );
+   if (!valid_elements_type(ctx, type, "glDrawElements"))
       return GL_FALSE;
-   }
 
    if (!check_valid_to_render(ctx, "glDrawElements"))
       return GL_FALSE;
 
    /* Vertex buffer object tests */
-   if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
+   if (_mesa_is_bufferobj(ctx->Array.ArrayObj->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) {
+      if (index_bytes(type, count) > ctx->Array.ArrayObj->ElementArrayBufferObj->Size) {
          _mesa_warning(ctx, "glDrawElements index out of buffer bounds");
          return GL_FALSE;
       }
@@ -215,18 +354,85 @@ _mesa_validate_DrawElements(GLcontext *ctx,
 }
 
 
+/**
+ * Error checking for glMultiDrawElements().  Includes parameter checking
+ * and VBO bounds checking.
+ * \return GL_TRUE if OK to render, GL_FALSE if error found
+ */
+GLboolean
+_mesa_validate_MultiDrawElements(struct gl_context *ctx,
+                                 GLenum mode, const GLsizei *count,
+                                 GLenum type, const GLvoid * const *indices,
+                                 GLuint primcount, const GLint *basevertex)
+{
+   unsigned i;
+
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
+
+   for (i = 0; i < primcount; i++) {
+      if (count[i] <= 0) {
+         if (count[i] < 0)
+            _mesa_error(ctx, GL_INVALID_VALUE,
+                        "glMultiDrawElements(count)" );
+         return GL_FALSE;
+      }
+   }
+
+   if (!_mesa_valid_prim_mode(ctx, mode, "glMultiDrawElements")) {
+      return GL_FALSE;
+   }
+
+   if (!valid_elements_type(ctx, type, "glMultiDrawElements"))
+      return GL_FALSE;
+
+   if (!check_valid_to_render(ctx, "glMultiDrawElements"))
+      return GL_FALSE;
+
+   /* Vertex buffer object tests */
+   if (_mesa_is_bufferobj(ctx->Array.ArrayObj->ElementArrayBufferObj)) {
+      /* use indices in the buffer object */
+      /* make sure count doesn't go outside buffer bounds */
+      for (i = 0; i < primcount; i++) {
+         if (index_bytes(type, count[i]) >
+             ctx->Array.ArrayObj->ElementArrayBufferObj->Size) {
+            _mesa_warning(ctx,
+                          "glMultiDrawElements index out of buffer bounds");
+            return GL_FALSE;
+         }
+      }
+   }
+   else {
+      /* not using a VBO */
+      for (i = 0; i < primcount; i++) {
+         if (!indices[i])
+            return GL_FALSE;
+      }
+   }
+
+   for (i = 0; i < primcount; i++) {
+      if (!check_index_bounds(ctx, count[i], type, indices[i],
+                              basevertex ? basevertex[i] : 0))
+         return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+
 /**
  * Error checking for glDrawRangeElements().  Includes parameter checking
  * and VBO bounds checking.
  * \return GL_TRUE if OK to render, GL_FALSE if error found
  */
 GLboolean
-_mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
+_mesa_validate_DrawRangeElements(struct gl_context *ctx, GLenum mode,
 				 GLuint start, GLuint end,
 				 GLsizei count, GLenum type,
 				 const GLvoid *indices, GLint basevertex)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
 
    if (count <= 0) {
       if (count < 0)
@@ -234,8 +440,7 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
       return GL_FALSE;
    }
 
-   if (mode > GL_POLYGON) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(mode)" );
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawRangeElements")) {
       return GL_FALSE;
    }
 
@@ -244,21 +449,17 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
       return GL_FALSE;
    }
 
-   if (type != GL_UNSIGNED_INT &&
-       type != GL_UNSIGNED_BYTE &&
-       type != GL_UNSIGNED_SHORT) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawRangeElements(type)" );
+   if (!valid_elements_type(ctx, type, "glDrawRangeElements"))
       return GL_FALSE;
-   }
 
    if (!check_valid_to_render(ctx, "glDrawRangeElements"))
       return GL_FALSE;
 
    /* Vertex buffer object tests */
-   if (_mesa_is_bufferobj(ctx->Array.ElementArrayBufferObj)) {
+   if (_mesa_is_bufferobj(ctx->Array.ArrayObj->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) {
+      if (index_bytes(type, count) > ctx->Array.ArrayObj->ElementArrayBufferObj->Size) {
          _mesa_warning(ctx, "glDrawRangeElements index out of buffer bounds");
          return GL_FALSE;
       }
@@ -282,10 +483,11 @@ _mesa_validate_DrawRangeElements(GLcontext *ctx, GLenum mode,
  * \return GL_TRUE if OK to render, GL_FALSE if error found
  */
 GLboolean
-_mesa_validate_DrawArrays(GLcontext *ctx,
+_mesa_validate_DrawArrays(struct gl_context *ctx,
 			  GLenum mode, GLint start, GLsizei count)
 {
    ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
 
    if (count <= 0) {
       if (count < 0)
@@ -293,8 +495,7 @@ _mesa_validate_DrawArrays(GLcontext *ctx,
       return GL_FALSE;
    }
 
-   if (mode > GL_POLYGON) {
-      _mesa_error(ctx, GL_INVALID_ENUM, "glDrawArrays(mode)" );
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawArrays")) {
       return GL_FALSE;
    }
 
@@ -308,3 +509,148 @@ _mesa_validate_DrawArrays(GLcontext *ctx,
 
    return GL_TRUE;
 }
+
+
+GLboolean
+_mesa_validate_DrawArraysInstanced(struct gl_context *ctx, GLenum mode, GLint first,
+                                   GLsizei count, GLsizei numInstances)
+{
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
+
+   if (count <= 0) {
+      if (count < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawArraysInstanced(count=%d)", count);
+      return GL_FALSE;
+   }
+
+   if (first < 0) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+		  "glDrawArraysInstanced(start=%d)", first);
+      return GL_FALSE;
+   }
+
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawArraysInstanced")) {
+      return GL_FALSE;
+   }
+
+   if (numInstances <= 0) {
+      if (numInstances < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawArraysInstanced(numInstances=%d)", numInstances);
+      return GL_FALSE;
+   }
+
+   if (!check_valid_to_render(ctx, "glDrawArraysInstanced(invalid to render)"))
+      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(struct gl_context *ctx,
+                                     GLenum mode, GLsizei count, GLenum type,
+                                     const GLvoid *indices, GLsizei numInstances,
+                                     GLint basevertex)
+{
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
+
+   if (count <= 0) {
+      if (count < 0)
+	 _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawElementsInstanced(count=%d)", count);
+      return GL_FALSE;
+   }
+
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawElementsInstanced")) {
+      return GL_FALSE;
+   }
+
+   if (!valid_elements_type(ctx, type, "glDrawElementsInstanced"))
+      return GL_FALSE;
+
+   if (numInstances <= 0) {
+      if (numInstances < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawElementsInstanced(numInstances=%d)", numInstances);
+      return GL_FALSE;
+   }
+
+   if (!check_valid_to_render(ctx, "glDrawElementsInstanced"))
+      return GL_FALSE;
+
+   /* Vertex buffer object tests */
+   if (_mesa_is_bufferobj(ctx->Array.ArrayObj->ElementArrayBufferObj)) {
+      /* use indices in the buffer object */
+      /* make sure count doesn't go outside buffer bounds */
+      if (index_bytes(type, count) > ctx->Array.ArrayObj->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, basevertex))
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+GLboolean
+_mesa_validate_DrawTransformFeedback(struct gl_context *ctx,
+                                     GLenum mode,
+                                     struct gl_transform_feedback_object *obj,
+                                     GLuint stream,
+                                     GLsizei numInstances)
+{
+   ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
+   FLUSH_CURRENT(ctx, 0);
+
+   if (!_mesa_valid_prim_mode(ctx, mode, "glDrawTransformFeedback*(mode)")) {
+      return GL_FALSE;
+   }
+
+   if (!obj) {
+      _mesa_error(ctx, GL_INVALID_VALUE, "glDrawTransformFeedback*(name)");
+      return GL_FALSE;
+   }
+
+   if (!obj->EndedAnytime) {
+      _mesa_error(ctx, GL_INVALID_OPERATION, "glDrawTransformFeedback*");
+      return GL_FALSE;
+   }
+
+   if (stream >= ctx->Const.MaxVertexStreams) {
+      _mesa_error(ctx, GL_INVALID_VALUE,
+                  "glDrawTransformFeedbackStream*(index>=MaxVertexStream)");
+      return GL_FALSE;
+   }
+
+   if (numInstances <= 0) {
+      if (numInstances < 0)
+         _mesa_error(ctx, GL_INVALID_VALUE,
+                     "glDrawTransformFeedback*Instanced(numInstances=%d)",
+                     numInstances);
+      return GL_FALSE;
+   }
+
+   if (!check_valid_to_render(ctx, "glDrawTransformFeedback*")) {
+      return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}