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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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gltestsrc: port smpte pattern to shaders
Loosely based on patch by Lubosz Sarnecki <lubosz.sarnecki@collabora.co.uk> https://bugzilla.gnome.org/show_bug.cgi?id=751540
This commit is contained in:
Matthew Waters
Tim-Philipp Müller
parent
b7ab7aa349
commit
55eaa869ea
1 changed files with 314 additions and 168 deletions
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@ -28,6 +28,11 @@ struct vts_color_struct
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gfloat R, G, B;
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};
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struct XYZW
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{
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gfloat X, Y, Z, W;
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};
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enum
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{
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COLOR_WHITE = 0,
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@ -82,9 +87,106 @@ static const GLfloat positions[] = {
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static const GLushort indices_quad[] = { 0, 1, 2, 0, 2, 3 };
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/* *INDENT-ON* */
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struct SrcSMPTE
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struct SrcShader
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{
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struct BaseSrcImpl base;
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GstGLShader *shader;
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gint attr_position;
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gint attr_texcoord;
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/* x, y, z, w */
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const gfloat *vertices;
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guint n_vertices;
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const gushort *indices;
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guint n_indices;
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};
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static gboolean
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_src_shader_fill_bound_fbo (gpointer impl)
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{
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struct SrcShader *src = impl;
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const GstGLFuncs *gl;
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g_return_val_if_fail (src->base.context, FALSE);
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g_return_val_if_fail (src->shader, FALSE);
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gl = src->base.context->gl_vtable;
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gst_gl_shader_use (src->shader);
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if (src->attr_position != -1) {
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gl->VertexAttribPointer (src->attr_position, 4, GL_FLOAT, GL_FALSE, 0,
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src->vertices);
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gl->EnableVertexAttribArray (src->attr_position);
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}
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gl->DrawElements (GL_TRIANGLES, src->n_indices, GL_UNSIGNED_SHORT,
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src->indices);
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if (src->attr_position != -1)
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gl->DisableVertexAttribArray (src->attr_position);
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gst_gl_context_clear_shader (src->base.context);
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return TRUE;
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}
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/* *INDENT-OFF* */
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static const gchar *smpte_vertex_src =
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"attribute vec4 position;\n"
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"attribute vec4 a_color;\n"
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"varying vec4 color;\n"
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"void main()\n"
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"{\n"
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" gl_Position = position;\n"
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" color = a_color;\n"
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"}";
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static const gchar *smpte_fragment_src =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"varying vec4 color;\n"
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"void main()\n"
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"{\n"
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" gl_FragColor = color;\n"
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"}";
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static const gchar *snow_vertex_src =
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"attribute vec4 position;\n"
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"varying vec2 out_uv;\n"
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"void main()\n"
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"{\n"
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" gl_Position = position;\n"
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" out_uv = position.xy;\n"
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"}";
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static const gchar *snow_fragment_src =
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"#ifdef GL_ES\n"
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"precision mediump float;\n"
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"#endif\n"
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"uniform float time;\n"
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"varying vec2 out_uv;\n"
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"\n"
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"float rand(vec2 co){\n"
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" return fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453);\n"
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"}\n"
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"void main()\n"
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"{\n"
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" gl_FragColor = vec4(rand(time * out_uv));\n"
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"}";
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/* *INDENT-ON* */
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#define N_QUADS 21
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struct SrcSMPTE
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{
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struct SrcShader base;
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GstGLShader *snow_shader;
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GstGLShader *color_shader;
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gint a_color_loc;
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gfloat *vertices;
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gushort *indices;
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struct vts_color_struct *colors;
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};
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static gpointer
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@ -92,7 +194,7 @@ _src_smpte_new (GstGLTestSrc * test)
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{
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struct SrcSMPTE *src = g_new0 (struct SrcSMPTE, 1);
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src->base.src = test;
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src->base.base.src = test;
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return src;
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}
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@ -101,8 +203,177 @@ static gboolean
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_src_smpte_init (gpointer impl, GstGLContext * context, GstVideoInfo * v_info)
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{
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struct SrcSMPTE *src = impl;
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struct XYZW *plane_positions;
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gushort *plane_indices;
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struct vts_color_struct *colors;
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GError *error = NULL;
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int color_idx = 0;
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int i;
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src->base.context = context;
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src->base.base.context = context;
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colors = g_new0 (struct vts_color_struct, N_QUADS * 4);
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plane_positions = g_new0 (struct XYZW, N_QUADS * 4);
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plane_indices = g_new0 (gushort, N_QUADS * 6);
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/* top row */
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for (int i = 0; i < 7; i++) {
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plane_positions[color_idx * 4 + 0].X = -1.0f + i * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 0].Y = 1.0f / 3.0f;
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plane_positions[color_idx * 4 + 1].X = -1.0f + (i + 1) * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 1].Y = 1.0f / 3.0f;
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plane_positions[color_idx * 4 + 2].X = -1.0f + (i + 1) * (2.0f / 7.0f),
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plane_positions[color_idx * 4 + 2].Y = -1.0f;
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plane_positions[color_idx * 4 + 3].X = -1.0f + i * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 3].Y = -1.0f;
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color_idx++;
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}
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/* middle row */
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for (int i = 0; i < 7; i++) {
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plane_positions[color_idx * 4 + 0].X = -1.0f + i * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 0].Y = 0.5f;
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plane_positions[color_idx * 4 + 1].X = -1.0f + (i + 1) * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 1].Y = 0.5f;
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plane_positions[color_idx * 4 + 2].X = -1.0f + (i + 1) * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 2].Y = 1.0f / 3.0f;
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plane_positions[color_idx * 4 + 3].X = -1.0f + i * (2.0f / 7.0f);
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plane_positions[color_idx * 4 + 3].Y = 1.0f / 3.0f;
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color_idx++;
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}
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/* bottom row, left three */
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for (int i = 0; i < 3; i++) {
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plane_positions[color_idx * 4 + 0].X = -1.0f + i / 3.0f;
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plane_positions[color_idx * 4 + 0].Y = 1.0f;
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plane_positions[color_idx * 4 + 1].X = -1.0f + (i + 1) / 3.0f;
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plane_positions[color_idx * 4 + 1].Y = 1.0f;
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plane_positions[color_idx * 4 + 2].X = -1.0f + (i + 1) / 3.0f;
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plane_positions[color_idx * 4 + 2].Y = 0.5f;
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plane_positions[color_idx * 4 + 3].X = -1.0f + i / 3.0f;
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plane_positions[color_idx * 4 + 3].Y = 0.5f;
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color_idx++;
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}
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/* bottom row, middle three (the blacks) */
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for (int i = 0; i < 3; i++) {
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plane_positions[color_idx * 4 + 0].X = i / 6.0f;
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plane_positions[color_idx * 4 + 0].Y = 1.0f;
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plane_positions[color_idx * 4 + 1].X = (i + 1) / 6.0f;
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plane_positions[color_idx * 4 + 1].Y = 1.0f;
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plane_positions[color_idx * 4 + 2].X = (i + 1) / 6.0f;
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plane_positions[color_idx * 4 + 2].Y = 0.5f;
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plane_positions[color_idx * 4 + 3].X = i / 6.0f;
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plane_positions[color_idx * 4 + 3].Y = 0.5f;
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color_idx++;
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}
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g_assert (color_idx < N_QUADS);
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for (i = 0; i < N_QUADS - 1; i++) {
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int j, k;
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if (i < 7) {
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k = i;
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} else if ((i - 7) & 1) {
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k = COLOR_BLACK;
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} else {
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k = 13 - i;
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}
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if (i == 14) {
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k = COLOR_NEG_I;
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} else if (i == 15) {
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k = COLOR_WHITE;
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} else if (i == 16) {
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k = COLOR_POS_Q;
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} else if (i == 17) {
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k = COLOR_SUPER_BLACK;
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} else if (i == 18) {
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k = COLOR_BLACK;
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} else if (i == 19) {
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k = COLOR_DARK_GREY;
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}
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for (j = 0; j < 4; j++) {
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plane_positions[i * 4 + j].Z = 0.0f;
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plane_positions[i * 4 + j].W = 1.0f;
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colors[i * 4 + j] = vts_colors[k];
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}
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for (j = 0; j < 6; j++)
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plane_indices[i * 6 + j] = i * 4 + indices_quad[j];
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}
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/* snow */
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plane_positions[color_idx * 4 + 0].X = 0.5f;
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plane_positions[color_idx * 4 + 0].Y = 1.0f;
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plane_positions[color_idx * 4 + 0].Z = 0.0f;
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plane_positions[color_idx * 4 + 0].W = 1.0f;
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plane_positions[color_idx * 4 + 1].X = 1.0f;
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plane_positions[color_idx * 4 + 1].Y = 1.0f;
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plane_positions[color_idx * 4 + 1].Z = 0.0f;
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plane_positions[color_idx * 4 + 1].W = 1.0f;
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plane_positions[color_idx * 4 + 2].X = 1.0f;
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plane_positions[color_idx * 4 + 2].Y = 0.5f;
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plane_positions[color_idx * 4 + 2].Z = 0.0f;
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plane_positions[color_idx * 4 + 2].W = 1.0f;
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plane_positions[color_idx * 4 + 3].X = 0.5f;
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plane_positions[color_idx * 4 + 3].Y = 0.5f;
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plane_positions[color_idx * 4 + 3].Z = 0.0f;
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plane_positions[color_idx * 4 + 3].W = 1.0f;
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color_idx++;
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if (src->color_shader)
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gst_object_unref (src->color_shader);
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src->color_shader = gst_gl_shader_new_link_with_stages (context, &error,
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gst_glsl_stage_new_with_string (context, GL_VERTEX_SHADER,
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GST_GLSL_VERSION_NONE,
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GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
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smpte_vertex_src),
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gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
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GST_GLSL_VERSION_NONE,
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GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
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smpte_fragment_src), NULL);
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if (!src->color_shader) {
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GST_ERROR_OBJECT (src->base.base.src, "%s", error->message);
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return FALSE;
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}
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if (src->snow_shader)
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gst_object_unref (src->snow_shader);
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src->snow_shader = gst_gl_shader_new_link_with_stages (context, &error,
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gst_glsl_stage_new_with_string (context, GL_VERTEX_SHADER,
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GST_GLSL_VERSION_NONE,
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GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
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snow_vertex_src),
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gst_glsl_stage_new_with_string (context, GL_FRAGMENT_SHADER,
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GST_GLSL_VERSION_NONE,
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GST_GLSL_PROFILE_ES | GST_GLSL_PROFILE_COMPATIBILITY,
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snow_fragment_src), NULL);
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if (!src->snow_shader) {
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GST_ERROR_OBJECT (src->base.base.src, "%s", error->message);
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return FALSE;
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}
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gst_gl_shader_use (src->color_shader);
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src->base.attr_position =
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gst_gl_shader_get_attribute_location (src->color_shader, "position");
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if (src->base.attr_position == -1) {
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GST_ERROR_OBJECT (src->base.base.src, "No position attribute");
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return FALSE;
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}
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src->a_color_loc =
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gst_gl_shader_get_attribute_location (src->color_shader, "a_color");
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/* if (src->a_color_loc == -1) {
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GST_ERROR_OBJECT (src->base.base.src, "No color attribute");
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return FALSE;
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}*/
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gst_gl_context_clear_shader (src->base.base.context);
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src->vertices = (gfloat *) plane_positions;
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src->indices = plane_indices;
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src->colors = colors;
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return TRUE;
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}
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@ -110,105 +381,34 @@ _src_smpte_init (gpointer impl, GstGLContext * context, GstVideoInfo * v_info)
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static gboolean
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_src_smpte_fill_bound_fbo (gpointer impl)
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{
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#if GST_GL_HAVE_OPENGL
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struct SrcSMPTE *src = impl;
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int i;
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const GstGLFuncs *gl = src->base.base.context->gl_vtable;
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if (gst_gl_context_get_gl_api (src->base.context) & GST_GL_API_OPENGL) {
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glClearColor (0.0, 0.0, 0.0, 1.0);
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glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glDisable (GL_CULL_FACE);
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glMatrixMode (GL_PROJECTION);
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glLoadIdentity ();
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for (i = 0; i < 7; i++) {
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glColor4f (vts_colors[i].R, vts_colors[i].G, vts_colors[i].B, 1.0f);
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glBegin (GL_QUADS);
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glVertex3f (-1.0f + i * (2.0f / 7.0f), -1.0f + 2.0 * (2.0f / 3.0f), 0);
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glVertex3f (-1.0f + (i + 1.0f) * (2.0f / 7.0f),
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-1.0f + 2.0f * (2.0f / 3.0f), 0);
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glVertex3f (-1.0f + (i + 1.0f) * (2.0f / 7.0f), -1.0f, 0);
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glVertex3f (-1.0f + i * (2.0f / 7.0f), -1.0f, 0);
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glEnd ();
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if (src->a_color_loc != -1) {
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gl->VertexAttribPointer (src->a_color_loc, 3, GL_FLOAT, GL_FALSE, 0,
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src->colors);
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gl->EnableVertexAttribArray (src->a_color_loc);
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}
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src->base.shader = src->color_shader;
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src->base.vertices = src->vertices;
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src->base.n_vertices = (N_QUADS - 1) * 4 * 4;
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src->base.indices = src->indices;
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src->base.n_indices = (N_QUADS - 1) * 6;
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if (!_src_shader_fill_bound_fbo (impl))
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return FALSE;
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if (src->a_color_loc != -1)
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gl->DisableVertexAttribArray (src->a_color_loc);
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for (i = 0; i < 7; i++) {
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int k;
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if (i & 1) {
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k = 7;
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} else {
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k = 6 - i;
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}
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glColor4f (vts_colors[k].R, vts_colors[k].G, vts_colors[k].B, 1.0f);
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glBegin (GL_QUADS);
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glVertex3f (-1.0f + i * (2.0f / 7.0f), -1.0f + 2.0f * (3.0f / 4.0f), 0);
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glVertex3f (-1.0f + (i + 1) * (2.0f / 7.0f), -1.0f + 2.0f * (3.0f / 4.0f),
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0);
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glVertex3f (-1.0f + (i + 1) * (2.0f / 7.0f), -1.0f + 2.0f * (2.0f / 3.0f),
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0);
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glVertex3f (-1.0f + i * (2.0f / 7.0f), -1.0f + 2.0f * (2.0f / 3.0f), 0);
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glEnd ();
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}
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for (i = 0; i < 3; i++) {
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int k;
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if (i == 0) {
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k = 8;
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} else if (i == 1) {
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k = 0;
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} else {
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k = 9;
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}
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glColor4f (vts_colors[k].R, vts_colors[k].G, vts_colors[k].B, 1.0f);
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glBegin (GL_QUADS);
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glVertex3f (-1.0f + i * (2.0f / 6.0f), -1.0f + 2.0f * 1, 0);
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glVertex3f (-1.0f + (i + 1) * (2.0f / 6.0f), -1.0f + 2.0f * 1, 0);
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glVertex3f (-1.0f + (i + 1) * (2.0f / 6.0f), -1.0f + 2.0f * (3.0f / 4.0f),
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0);
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glVertex3f (-1.0f + i * (2.0f / 6.0f), -1.0f + 2.0f * (3.0f / 4.0f), 0);
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glEnd ();
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}
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for (i = 0; i < 3; i++) {
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int k;
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if (i == 0) {
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k = COLOR_SUPER_BLACK;
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} else if (i == 1) {
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k = COLOR_BLACK;
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} else {
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k = COLOR_DARK_GREY;
|
||||
}
|
||||
|
||||
glColor4f (vts_colors[k].R, vts_colors[k].G, vts_colors[k].B, 1.0f);
|
||||
glBegin (GL_QUADS);
|
||||
glVertex3f (-1.0f + 2.0f * (0.5f + i * (1.0f / 12.0f)), -1.0 + 2.0f * 1,
|
||||
0);
|
||||
glVertex3f (-1.0f + 2.0f * (0.5f + (i + 1) * (1.0f / 12.0f)),
|
||||
-1.0f + 2.0f * 1, 0);
|
||||
glVertex3f (-1.0f + 2.0f * (0.5f + (i + 1) * (1.0f / 12.0f)),
|
||||
-1.0f + 2.0f * (3.0f / 4.0f), 0);
|
||||
glVertex3f (-1.0f + 2.0f * (0.5f + i * (1.0f / 12.0f)),
|
||||
-1.0f + 2.0f * (3.0f / 4.0f), 0);
|
||||
glEnd ();
|
||||
}
|
||||
|
||||
glColor4f (1.0, 1.0, 1.0, 1.0);
|
||||
glBegin (GL_QUADS);
|
||||
glVertex3f (-1.0 + 2.0 * (0.75), -1.0 + 2.0 * 1, 0);
|
||||
glVertex3f (-1.0 + 2.0 * (1.0), -1.0 + 2.0 * 1, 0);
|
||||
glVertex3f (-1.0 + 2.0 * (1.0), -1.0 + 2.0 * (3.0 / 4.0), 0);
|
||||
glVertex3f (-1.0 + 2.0 * (0.75), -1.0 + 2.0 * (3.0 / 4.0), 0);
|
||||
glEnd ();
|
||||
}
|
||||
#endif
|
||||
src->base.shader = src->snow_shader;
|
||||
src->base.vertices = &src->vertices[src->base.n_vertices];
|
||||
src->base.n_vertices = 4;
|
||||
src->base.indices = src->indices;
|
||||
src->base.n_indices = 6;
|
||||
gst_gl_shader_use (src->snow_shader);
|
||||
gst_gl_shader_set_uniform_1f (src->snow_shader, "time",
|
||||
(gfloat) src->base.base.src->running_time / GST_SECOND);
|
||||
if (!_src_shader_fill_bound_fbo (impl))
|
||||
return FALSE;
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
|
@ -216,10 +416,22 @@ _src_smpte_fill_bound_fbo (gpointer impl)
|
|||
static void
|
||||
_src_smpte_free (gpointer impl)
|
||||
{
|
||||
struct SrcSMPTE *src = impl;
|
||||
|
||||
if (!impl)
|
||||
return;
|
||||
|
||||
if (src->base.shader)
|
||||
gst_object_unref (src->base.shader);
|
||||
src->base.shader = NULL;
|
||||
|
||||
g_free (src->vertices);
|
||||
g_free (src->indices);
|
||||
g_free (src->colors);
|
||||
|
||||
g_free (impl);
|
||||
}
|
||||
|
||||
|
||||
static const struct SrcFuncs src_smpte = {
|
||||
GST_GL_TEST_SRC_SMPTE,
|
||||
_src_smpte_new,
|
||||
|
|
@ -228,6 +440,8 @@ static const struct SrcFuncs src_smpte = {
|
|||
_src_smpte_free,
|
||||
};
|
||||
|
||||
#undef N_QUADS
|
||||
|
||||
struct SrcUniColor
|
||||
{
|
||||
struct BaseSrcImpl base;
|
||||
|
|
@ -329,48 +543,6 @@ static const struct SrcFuncs src_blink = {
|
|||
_src_uni_color_free,
|
||||
};
|
||||
|
||||
struct SrcShader
|
||||
{
|
||||
struct BaseSrcImpl base;
|
||||
|
||||
GstGLShader *shader;
|
||||
|
||||
gint attr_position;
|
||||
gint attr_texcoord;
|
||||
/* x, y, z, w */
|
||||
const gfloat *vertices;
|
||||
guint n_vertices;
|
||||
const gushort *indices;
|
||||
guint n_indices;
|
||||
};
|
||||
|
||||
static gboolean
|
||||
_src_shader_fill_bound_fbo (gpointer impl)
|
||||
{
|
||||
struct SrcShader *src = impl;
|
||||
const GstGLFuncs *gl;
|
||||
|
||||
g_return_val_if_fail (src->base.context, FALSE);
|
||||
g_return_val_if_fail (src->shader, FALSE);
|
||||
gl = src->base.context->gl_vtable;
|
||||
|
||||
gst_gl_shader_use (src->shader);
|
||||
|
||||
if (src->attr_position != -1) {
|
||||
gl->VertexAttribPointer (src->attr_position, 4, GL_FLOAT, GL_FALSE, 0,
|
||||
src->vertices);
|
||||
gl->EnableVertexAttribArray (src->attr_position);
|
||||
}
|
||||
gl->DrawElements (GL_TRIANGLES, src->n_indices, GL_UNSIGNED_SHORT,
|
||||
src->indices);
|
||||
|
||||
if (src->attr_position != -1)
|
||||
gl->DisableVertexAttribArray (src->attr_position);
|
||||
gst_gl_context_clear_shader (src->base.context);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
/* *INDENT-OFF* */
|
||||
static const gchar *checkers_vertex_src = "attribute vec4 position;\n"
|
||||
"void main()\n"
|
||||
|
|
@ -491,32 +663,6 @@ SRC_CHECKERS (2);
|
|||
SRC_CHECKERS (4);
|
||||
SRC_CHECKERS (8);
|
||||
|
||||
/* *INDENT-OFF* */
|
||||
static const gchar *snow_vertex_src =
|
||||
"attribute vec4 position;\n"
|
||||
"varying vec2 out_uv;\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_Position = position;\n"
|
||||
" out_uv = position.xy;\n"
|
||||
"}";
|
||||
|
||||
static const gchar *snow_fragment_src =
|
||||
"#ifdef GL_ES\n"
|
||||
"precision mediump float;\n"
|
||||
"#endif\n"
|
||||
"uniform float time;\n"
|
||||
"varying vec2 out_uv;\n"
|
||||
"\n"
|
||||
"float rand(vec2 co){\n"
|
||||
" return fract(sin(dot(co.xy, vec2(12.9898,78.233))) * 43758.5453);\n"
|
||||
"}\n"
|
||||
"void main()\n"
|
||||
"{\n"
|
||||
" gl_FragColor = vec4(rand(time * out_uv));\n"
|
||||
"}";
|
||||
/* *INDENT-ON* */
|
||||
|
||||
static gboolean
|
||||
_src_snow_init (gpointer impl, GstGLContext * context, GstVideoInfo * v_info)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in a new issue