C++ (Cpp) _mesa_Uniform4fv Examples

Example #1

File: brw_meta_fast_clear.c Project: ashmew2/kolibriosSVN

static void
brw_bind_rep_write_shader(struct brw_context *brw, float *color)
{
   const char *vs_source =
      "#extension GL_AMD_vertex_shader_layer : enable\n"
      "#extension GL_ARB_draw_instanced : enable\n"
      "attribute vec4 position;\n"
      "uniform int layer;\n"
      "void main()\n"
      "{\n"
      "#ifdef GL_AMD_vertex_shader_layer\n"
      "   gl_Layer = gl_InstanceID;\n"
      "#endif\n"
      "   gl_Position = position;\n"
      "}\n";
   const char *fs_source =
      "uniform vec4 color;\n"
      "void main()\n"
      "{\n"
      "   gl_FragColor = color;\n"
      "}\n";

   GLuint vs, fs;
   struct brw_fast_clear_state *clear = brw->fast_clear_state;
   struct gl_context *ctx = &brw->ctx;

   if (clear->shader_prog) {
      _mesa_UseProgram(clear->shader_prog);
      _mesa_Uniform4fv(clear->color_location, 1, color);
      return;
   }

   vs = _mesa_meta_compile_shader_with_debug(ctx, GL_VERTEX_SHADER, vs_source);
   fs = _mesa_meta_compile_shader_with_debug(ctx, GL_FRAGMENT_SHADER, fs_source);

   clear->shader_prog = _mesa_CreateProgram();
   _mesa_AttachShader(clear->shader_prog, fs);
   _mesa_DeleteShader(fs);
   _mesa_AttachShader(clear->shader_prog, vs);
   _mesa_DeleteShader(vs);
   _mesa_BindAttribLocation(clear->shader_prog, 0, "position");
   _mesa_ObjectLabel(GL_PROGRAM, clear->shader_prog, -1, "meta clear");
   _mesa_LinkProgram(clear->shader_prog);

   clear->color_location =
      _mesa_GetUniformLocation(clear->shader_prog, "color");

   _mesa_UseProgram(clear->shader_prog);
   _mesa_Uniform4fv(clear->color_location, 1, color);
}

Example #2

File: brw_meta_fast_clear.c Project: gqmelo/mesa

static void
brw_bind_rep_write_shader(struct brw_context *brw, float *color)
{
   const char *vs_source =
      "#extension GL_AMD_vertex_shader_layer : enable\n"
      "#extension GL_ARB_draw_instanced : enable\n"
      "#extension GL_ARB_explicit_attrib_location : enable\n"
      "layout(location = 0) in vec4 position;\n"
      "uniform int layer;\n"
      "void main()\n"
      "{\n"
      "#ifdef GL_AMD_vertex_shader_layer\n"
      "   gl_Layer = gl_InstanceID;\n"
      "#endif\n"
      "   gl_Position = position;\n"
      "}\n";
   const char *fs_source =
      "uniform vec4 color;\n"
      "void main()\n"
      "{\n"
      "   gl_FragColor = color;\n"
      "}\n";

   struct brw_fast_clear_state *clear = brw->fast_clear_state;
   struct gl_context *ctx = &brw->ctx;

   if (clear->shader_prog) {
      _mesa_meta_use_program(ctx, clear->shader_prog);
      _mesa_Uniform4fv(clear->color_location, 1, color);
      return;
   }

   _mesa_meta_compile_and_link_program(ctx, vs_source, fs_source,
                                       "meta repclear",
                                       &clear->shader_prog);

   clear->color_location =
      _mesa_program_resource_location(clear->shader_prog, GL_UNIFORM, "color");

   _mesa_meta_use_program(ctx, clear->shader_prog);
   _mesa_Uniform4fv(clear->color_location, 1, color);
}