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tests: Add GLES shaders to testglarea

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Check if the GdkGLContext is using ES, and load the appropriate shaders
in that case.
This commit is contained in:
Emmanuele Bassi 2016-04-22 13:53:16 +01:00
parent f848450a70
commit a92ba06383
1 changed files with 27 additions and 5 deletions
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32
tests/testglarea.c
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@ -80,6 +80,20 @@ create_shader (int type, const char *src)
return shader;
}
static const char *vertex_shader_code_gles =
"attribute vec4 position;\n" \
"uniform mat4 mvp;\n" \
"void main() {\n" \
" gl_Position = mvp * position;\n" \
"}";
static const char *fragment_shader_code_gles =
"precision mediump float;\n" \
"void main() {\n" \
" float lerpVal = gl_FragCoord.y / 400.0;\n" \
" gl_FragColor = mix(vec4(1.0, 0.85, 0.35, 1.0), vec4(0.2, 0.2, 0.2, 1.0), lerpVal);\n" \
"}";
static const char *vertex_shader_code_330 =
"#version 330\n" \
"\n" \
@ -243,15 +257,23 @@ realize (GtkWidget *widget)
return;
context = gtk_gl_area_get_context (GTK_GL_AREA (widget));
if (!gdk_gl_context_is_legacy (context))
if (gdk_gl_context_get_use_es (context))
{
vertex = vertex_shader_code_330;
fragment = fragment_shader_code_330;
vertex = vertex_shader_code_gles;
fragment = fragment_shader_code_gles;
}
else
{
vertex = vertex_shader_code_legacy;
fragment = fragment_shader_code_legacy;
if (!gdk_gl_context_is_legacy (context))
{
vertex = vertex_shader_code_330;
fragment = fragment_shader_code_330;
}
else
{
vertex = vertex_shader_code_legacy;
fragment = fragment_shader_code_legacy;
}
}
init_buffers (&position_buffer, NULL);