diff --git a/reaction/code/renderer/tr_backend.c b/reaction/code/renderer/tr_backend.c
index a3bb0ea4..413641ac 100644
--- a/reaction/code/renderer/tr_backend.c
+++ b/reaction/code/renderer/tr_backend.c
@@ -24,6 +24,7 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 backEndData_t	*backEndData[SMP_FRAMES];
 backEndState_t	backEnd;
 
+void RB_InstantQuad(vec4_t quadVerts[4]);
 
 static float	s_flipMatrix[16] = {
 	// convert from our coordinate system (looking down X)
diff --git a/reaction/code/renderer/tr_bsp.c b/reaction/code/renderer/tr_bsp.c
index 9be4014f..dc051643 100644
--- a/reaction/code/renderer/tr_bsp.c
+++ b/reaction/code/renderer/tr_bsp.c
@@ -40,7 +40,7 @@ int			c_subdivisions;
 int			c_gridVerts;
 
 //===============================================================================
-
+/*
 static void HSVtoRGB( float h, float s, float v, float rgb[3] )
 {
 	int i;
@@ -90,7 +90,7 @@ static void HSVtoRGB( float h, float s, float v, float rgb[3] )
 		break;
 	}
 }
-
+*/
 /*
 ===============
 R_ColorShiftLightingBytes
@@ -130,6 +130,7 @@ static	void R_ColorShiftLightingBytes( byte in[4], byte out[4] ) {
 R_ColorShiftLightingFloats
 ===============
 */
+/*
 static void R_ColorShiftLightingFloats(const vec4_t in, vec4_t out)
 {
 	int             shift, r, g, b;
@@ -159,7 +160,7 @@ static void R_ColorShiftLightingFloats(const vec4_t in, vec4_t out)
 	out[2] = b * (1.0f / 255.0f);
 	out[3] = in[3];
 }
-
+*/
 /*
 ===============
 R_LoadLightmaps
@@ -1540,7 +1541,7 @@ static void CopyVert(const srfVert_t * in, srfVert_t * out)
 R_CreateWorldVBO
 ===============
 */
-static void R_CreateWorldVBO()
+static void R_CreateWorldVBO(void)
 {
 	int             i, j, k;
 
@@ -2500,7 +2501,7 @@ R_MergeLeafSurfaces
 Merges surfaces that share a common leaf
 =================
 */
-void R_MergeLeafSurfaces()
+void R_MergeLeafSurfaces(void)
 {
 	int i, j, k;
 	int numWorldSurfaces;
@@ -2777,6 +2778,9 @@ void R_MergeLeafSurfaces()
 						}
 					}
 					break;
+
+				default:
+					break;
 			}
 		}
 
diff --git a/reaction/code/renderer/tr_shade.c b/reaction/code/renderer/tr_shade.c
index 13a43286..ee76d8c9 100644
--- a/reaction/code/renderer/tr_shade.c
+++ b/reaction/code/renderer/tr_shade.c
@@ -318,7 +318,7 @@ static void DrawTris (shaderCommands_t *input) {
 			
 			if (input->multiDrawPrimitives)
 			{
-				R_DrawMultiElementsVBO(input->multiDrawPrimitives, input->multiDrawFirstIndex, input->multiDrawNumIndexes);
+				R_DrawMultiElementsVBO(input->multiDrawPrimitives, (const GLvoid **) input->multiDrawFirstIndex, input->multiDrawNumIndexes);
 			}
 			else
 			{
@@ -732,7 +732,7 @@ static void DrawMultitexturedVBO( shaderCommands_t *input, int stage ) {
 
 	if (input->multiDrawPrimitives)
 	{
-		R_DrawMultiElementsVBO(input->multiDrawPrimitives, input->multiDrawFirstIndex, input->multiDrawNumIndexes);
+		R_DrawMultiElementsVBO(input->multiDrawPrimitives, (const GLvoid **) input->multiDrawFirstIndex, input->multiDrawNumIndexes);
 	}
 	else
 	{
@@ -1167,7 +1167,7 @@ static void ProjectDlightTextureVBOGLSL( void ) {
 
 		if (tess.multiDrawPrimitives)
 		{
-			R_DrawMultiElementsVBO(tess.multiDrawPrimitives, tess.multiDrawFirstIndex, tess.multiDrawNumIndexes);
+			R_DrawMultiElementsVBO(tess.multiDrawPrimitives, (const GLvoid **) tess.multiDrawFirstIndex, tess.multiDrawNumIndexes);
 		}
 		else
 		{
@@ -1295,7 +1295,7 @@ static void RB_FogPassVBOGLSL( void ) {
 
 	if (tess.multiDrawPrimitives)
 	{
-		R_DrawMultiElementsVBO(tess.multiDrawPrimitives, tess.multiDrawFirstIndex, tess.multiDrawNumIndexes);
+		R_DrawMultiElementsVBO(tess.multiDrawPrimitives, (const GLvoid **) tess.multiDrawFirstIndex, tess.multiDrawNumIndexes);
 	}
 	else
 	{
@@ -1628,6 +1628,8 @@ static void ComputeHelperColor( shaderStage_t *pStage, vec4_t color)
 				color[3] = 0.0f;
 			}
 			break;
+		default:
+			break;
 	}
 
 	//
@@ -2082,6 +2084,8 @@ static void ComputeTexCoords( shaderStage_t *pStage ) {
 			break;
 		case TCGEN_BAD:
 			return;
+		default:
+			break;
 		}
 
 		//
@@ -2285,7 +2289,7 @@ static void RB_IterateStagesGenericVBO( shaderCommands_t *input )
 
 			if (input->multiDrawPrimitives)
 			{
-				R_DrawMultiElementsVBO(input->multiDrawPrimitives, input->multiDrawFirstIndex, input->multiDrawNumIndexes);
+				R_DrawMultiElementsVBO(input->multiDrawPrimitives, (const GLvoid **) input->multiDrawFirstIndex, input->multiDrawNumIndexes);
 			}
 			else
 			{
@@ -2348,7 +2352,7 @@ static void DrawMultitexturedVBOGLSL( shaderProgram_t *sp, shaderCommands_t *inp
 
 	if (input->multiDrawPrimitives)
 	{
-		R_DrawMultiElementsVBO(input->multiDrawPrimitives, input->multiDrawFirstIndex, input->multiDrawNumIndexes);
+		R_DrawMultiElementsVBO(input->multiDrawPrimitives, (const GLvoid **) input->multiDrawFirstIndex, input->multiDrawNumIndexes);
 	}
 	else
 	{
@@ -2495,6 +2499,8 @@ static void RB_IterateStagesGenericVBOGLSL( shaderCommands_t *input )
 		{
 			vec4_t color;
 
+// JBravo: silincing a compiler warning about color being uninitialized
+			MAKERGBA(color, 1.f, 1.f, 1.f, 1.f);
 			ComputeHelperColor (pStage, color);
 			GLSL_SetUniform_Color(sp, color);
 		}
@@ -2571,7 +2577,7 @@ static void RB_IterateStagesGenericVBOGLSL( shaderCommands_t *input )
 
 			if (input->multiDrawPrimitives)
 			{
-				R_DrawMultiElementsVBO(input->multiDrawPrimitives, input->multiDrawFirstIndex, input->multiDrawNumIndexes);
+				R_DrawMultiElementsVBO(input->multiDrawPrimitives, (const GLvoid **) input->multiDrawFirstIndex, input->multiDrawNumIndexes);
 			}
 			else
 			{
diff --git a/reaction/code/renderer/tr_shader.c b/reaction/code/renderer/tr_shader.c
index 63daffa9..daff3e35 100644
--- a/reaction/code/renderer/tr_shader.c
+++ b/reaction/code/renderer/tr_shader.c
@@ -1724,7 +1724,7 @@ Check which vertex attributes we only need, so we
 don't need to submit/copy all of them.
 ===================
 */
-static void ComputeVertexAttribs()
+static void ComputeVertexAttribs(void)
 {
 	int i, stage;