From 05a2aa33eaa33a07fd0936f903e4ba2c02032d60 Mon Sep 17 00:00:00 2001 From: Matthew Waters Date: Thu, 17 Aug 2017 13:42:21 +1000 Subject: [PATCH] gltransformation: draw with GL_TRIANGLES Drawing 5 vertices with GL_TRIANGLE_STRIP will draw an extra unneeded triangle. --- ext/gl/gstgltransformation.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/ext/gl/gstgltransformation.c b/ext/gl/gstgltransformation.c index 047fc73..679e961 100644 --- a/ext/gl/gstgltransformation.c +++ b/ext/gl/gstgltransformation.c @@ -253,7 +253,7 @@ gst_gl_transformation_init (GstGLTransformation * filter) filter->fov = 90; filter->aspect = 1.0; filter->znear = 0.1f; - filter->zfar = 100; + filter->zfar = 100.0; filter->xscale = 1.0; filter->yscale = 1.0; @@ -853,7 +853,7 @@ gst_gl_transformation_filter_texture (GstGLFilter * filter, return TRUE; } -static const GLushort indices[] = { 0, 1, 2, 3, 0 }; +static const GLushort indices[] = { 0, 1, 2, 0, 2, 3 }; static void _upload_vertices (GstGLTransformation * transformation) @@ -863,10 +863,10 @@ _upload_vertices (GstGLTransformation * transformation) /* *INDENT-OFF* */ GLfloat vertices[] = { - -transformation->aspect, 1.0, 0.0, 1.0, 0.0, 1.0, - transformation->aspect, 1.0, 0.0, 1.0, 1.0, 1.0, + -transformation->aspect, -1.0, 0.0, 1.0, 0.0, 0.0, transformation->aspect, -1.0, 0.0, 1.0, 1.0, 0.0, - -transformation->aspect, -1.0, 0.0, 1.0, 0.0, 0.0 + transformation->aspect, 1.0, 0.0, 1.0, 1.0, 1.0, + -transformation->aspect, 1.0, 0.0, 1.0, 0.0, 1.0, }; /* *INDENT-ON* */ @@ -966,7 +966,7 @@ gst_gl_transformation_callback (gpointer stuff) _upload_vertices (transformation); _bind_buffer (transformation); - gl->DrawElements (GL_TRIANGLE_STRIP, 5, GL_UNSIGNED_SHORT, 0); + gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0); if (gl->GenVertexArrays) gl->BindVertexArray (0); -- 2.7.4