Fix _draw_polygon colors and uvs

drivers/gles3/rasterizer_canvas_gles3.cpp

@@ -257,7 +257,7 @@ void RasterizerCanvasGLES3::_draw_polygon(const int *p_indices, int p_index_coun
 	//vertex
 	glBufferSubData(GL_ARRAY_BUFFER, buffer_ofs, sizeof(Vector2) * p_vertex_count, p_vertices);
 	glEnableVertexAttribArray(VS::ARRAY_VERTEX);
-	glVertexAttribPointer(VS::ARRAY_VERTEX, 2, GL_FLOAT, false, sizeof(Vector2), ((float *)0) + buffer_ofs);
+	glVertexAttribPointer(VS::ARRAY_VERTEX, 2, GL_FLOAT, false, sizeof(Vector2), ((uint8_t *)0) + buffer_ofs);
 	buffer_ofs += sizeof(Vector2) * p_vertex_count;
 	//color
 
@@ -272,7 +272,7 @@ void RasterizerCanvasGLES3::_draw_polygon(const int *p_indices, int p_index_coun
 
 		glBufferSubData(GL_ARRAY_BUFFER, buffer_ofs, sizeof(Color) * p_vertex_count, p_colors);
 		glEnableVertexAttribArray(VS::ARRAY_COLOR);
-		glVertexAttribPointer(VS::ARRAY_COLOR, 4, GL_FLOAT, false, sizeof(Color), ((float *)0) + buffer_ofs);
+		glVertexAttribPointer(VS::ARRAY_COLOR, 4, GL_FLOAT, false, sizeof(Color), ((uint8_t *)0) + buffer_ofs);
 		buffer_ofs += sizeof(Color) * p_vertex_count;
 	}
 
@@ -280,7 +280,7 @@ void RasterizerCanvasGLES3::_draw_polygon(const int *p_indices, int p_index_coun
 
 		glBufferSubData(GL_ARRAY_BUFFER, buffer_ofs, sizeof(Vector2) * p_vertex_count, p_uvs);
 		glEnableVertexAttribArray(VS::ARRAY_TEX_UV);
-		glVertexAttribPointer(VS::ARRAY_TEX_UV, 2, GL_FLOAT, false, sizeof(Vector2), ((float *)0) + buffer_ofs);
+		glVertexAttribPointer(VS::ARRAY_TEX_UV, 2, GL_FLOAT, false, sizeof(Vector2), ((uint8_t *)0) + buffer_ofs);
 		buffer_ofs += sizeof(Vector2) * p_vertex_count;
 
 	} else {