65196a4a9b
This makes CoglProgram/Shader automatically detect when the user has given an ARBfp program by checking for "!!ARBfp1.0" at the beginning of the user's source. ARBfp local parameters can be set with cogl_program_uniform_float assuming you pass a @size of 4 (all ARBfp program.local parameters are vectors of 4 floats). This doesn't expose ARBfp environment parameters or double precision local parameters.
443 lines
12 KiB
C
443 lines
12 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2008,2009,2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl.h"
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#include "cogl-program.h"
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#include "cogl-shader-private.h"
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#include "cogl-internal.h"
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#include "cogl-handle.h"
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#include "cogl-context.h"
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#include "cogl-journal-private.h"
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#include "cogl-material-opengl-private.h"
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#include <glib.h>
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#include <string.h>
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#define glCreateProgram ctx->drv.pf_glCreateProgram
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#define glAttachShader ctx->drv.pf_glAttachShader
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#define glUseProgram ctx->drv.pf_glUseProgram
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#define glLinkProgram ctx->drv.pf_glLinkProgram
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#define glGetUniformLocation ctx->drv.pf_glGetUniformLocation
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#define glUniform1f ctx->drv.pf_glUniform1f
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#define glUniform2f ctx->drv.pf_glUniform2f
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#define glUniform3f ctx->drv.pf_glUniform3f
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#define glUniform4f ctx->drv.pf_glUniform4f
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#define glUniform1fv ctx->drv.pf_glUniform1fv
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#define glUniform2fv ctx->drv.pf_glUniform2fv
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#define glUniform3fv ctx->drv.pf_glUniform3fv
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#define glUniform4fv ctx->drv.pf_glUniform4fv
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#define glUniform1i ctx->drv.pf_glUniform1i
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#define glUniform2i ctx->drv.pf_glUniform2i
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#define glUniform3i ctx->drv.pf_glUniform3i
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#define glUniform4i ctx->drv.pf_glUniform4i
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#define glUniform1iv ctx->drv.pf_glUniform1iv
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#define glUniform2iv ctx->drv.pf_glUniform2iv
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#define glUniform3iv ctx->drv.pf_glUniform3iv
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#define glUniform4iv ctx->drv.pf_glUniform4iv
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#define glUniformMatrix2fv ctx->drv.pf_glUniformMatrix2fv
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#define glUniformMatrix3fv ctx->drv.pf_glUniformMatrix3fv
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#define glUniformMatrix4fv ctx->drv.pf_glUniformMatrix4fv
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#define glDeleteProgram ctx->drv.pf_glDeleteProgram
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#define glProgramString ctx->drv.pf_glProgramString
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#define glBindProgram ctx->drv.pf_glBindProgram
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#define glDeletePrograms ctx->drv.pf_glDeletePrograms
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#define glGenPrograms ctx->drv.pf_glGenPrograms
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#define glProgramLocalParameter4fv ctx->drv.pf_glProgramLocalParameter4fv
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static void _cogl_program_free (CoglProgram *program);
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COGL_HANDLE_DEFINE (Program, program);
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COGL_OBJECT_DEFINE_DEPRECATED_REF_COUNTING (program);
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static void
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_cogl_program_free (CoglProgram *program)
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{
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/* Frees program resources but its handle is not
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released! Do that separately before this! */
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (program->gl_handle)
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{
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if (program->language == COGL_SHADER_LANGUAGE_ARBFP)
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GE (glDeletePrograms (1, &program->gl_handle));
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else
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GE (glDeleteProgram (program->gl_handle));
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}
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g_slice_free (CoglProgram, program);
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}
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CoglHandle
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cogl_create_program (void)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NULL);
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program = g_slice_new0 (CoglProgram);
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return _cogl_program_handle_new (program);
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}
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void
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cogl_program_attach_shader (CoglHandle program_handle,
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CoglHandle shader_handle)
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{
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CoglProgram *program;
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CoglShader *shader;
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CoglShaderLanguage language;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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g_return_if_fail (cogl_is_program (program_handle));
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g_return_if_fail (cogl_is_shader (shader_handle));
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program = _cogl_program_pointer_from_handle (program_handle);
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shader = _cogl_shader_pointer_from_handle (shader_handle);
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language = shader->language;
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/* We only allow attaching one ARBfp shader to a program */
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if (language == COGL_SHADER_LANGUAGE_ARBFP)
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g_return_if_fail (program->gl_handle == 0);
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program->language = language;
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if (language == COGL_SHADER_LANGUAGE_ARBFP)
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{
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#ifdef COGL_GL_DEBUG
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GLenum gl_error;
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#endif
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GE (glGenPrograms (1, &program->gl_handle));
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GE (glBindProgram (GL_FRAGMENT_PROGRAM_ARB, program->gl_handle));
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#ifdef COGL_GL_DEBUG
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while ((gl_error = glGetError ()) != GL_NO_ERROR)
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;
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#endif
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glProgramString (GL_FRAGMENT_PROGRAM_ARB,
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GL_PROGRAM_FORMAT_ASCII_ARB,
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strlen (shader->arbfp_source),
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shader->arbfp_source);
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#ifdef COGL_GL_DEBUG
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gl_error = glGetError ();
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if (gl_error != GL_NO_ERROR)
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{
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g_warning ("%s: GL error (%d): Failed to compile ARBfp:\n%s\n%s",
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G_STRLOC,
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gl_error,
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shader->arbfp_source,
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glGetString (GL_PROGRAM_ERROR_STRING_ARB));
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}
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#endif
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}
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else
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{
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if (!program->gl_handle)
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program->gl_handle = glCreateProgram ();
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GE (glAttachShader (program->gl_handle, shader->gl_handle));
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}
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/* NB: There is no separation between shader objects and program
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* objects for ARBfp */
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}
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void
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cogl_program_link (CoglHandle handle)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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if (!cogl_is_program (handle))
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return;
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program = _cogl_program_pointer_from_handle (handle);
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if (program->language == COGL_SHADER_LANGUAGE_GLSL &&
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program->gl_handle)
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GE (glLinkProgram (program->gl_handle));
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program->is_linked = TRUE;
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}
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void
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cogl_program_use (CoglHandle handle)
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{
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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g_return_if_fail (handle == COGL_INVALID_HANDLE ||
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cogl_is_program (handle));
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if (handle != COGL_INVALID_HANDLE)
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{
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CoglProgram *program = handle;
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g_return_if_fail (program->is_linked);
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}
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if (ctx->current_program == 0 && handle != 0)
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ctx->legacy_state_set++;
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else if (handle == 0 && ctx->current_program != 0)
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ctx->legacy_state_set--;
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if (handle != COGL_INVALID_HANDLE)
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cogl_handle_ref (handle);
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if (ctx->current_program != COGL_INVALID_HANDLE)
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cogl_handle_unref (ctx->current_program);
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ctx->current_program = handle;
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}
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/* ARBfp local parameters can be referenced like:
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*
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* "program.local[5]"
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* ^14char offset (after whitespace is stripped)
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*/
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static int
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get_local_param_index (const char *uniform_name)
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{
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char *input = g_strdup (uniform_name);
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int i;
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char *p = input;
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char *endptr;
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int _index;
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for (i = 0; input[i] != '\0'; i++)
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if (input[i] != '_' && input[i] != '\t')
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*p++ = input[i];
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input[i] = '\0';
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g_return_val_if_fail (strncmp ("program.local[", input, 14) == 0, -1);
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_index = g_ascii_strtoull (input + 14, &endptr, 10);
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g_return_val_if_fail (endptr != input + 14, -1);
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g_return_val_if_fail (*endptr == ']', -1);
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g_return_val_if_fail (_index >= 0 &&
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_index < COGL_PROGRAM_MAX_ARBFP_LOCAL_PARAMS, -1);
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g_free (input);
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return _index;
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}
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int
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cogl_program_get_uniform_location (CoglHandle handle,
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const char *uniform_name)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, 0);
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if (!cogl_is_program (handle))
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return 0;
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program = _cogl_program_pointer_from_handle (handle);
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if (program->language == COGL_SHADER_LANGUAGE_ARBFP)
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return get_local_param_index (uniform_name);
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else
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return glGetUniformLocation (program->gl_handle, uniform_name);
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}
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void
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cogl_program_uniform_1f (int uniform_no,
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float value)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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program = ctx->current_program;
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g_return_if_fail (program != NULL);
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g_return_if_fail (program->language != COGL_SHADER_LANGUAGE_ARBFP);
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_cogl_gl_use_program_wrapper (program);
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GE (glUniform1f (uniform_no, value));
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}
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void
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cogl_program_uniform_1i (int uniform_no,
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int value)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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program = ctx->current_program;
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g_return_if_fail (program != NULL);
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g_return_if_fail (program->language != COGL_SHADER_LANGUAGE_ARBFP);
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_cogl_gl_use_program_wrapper (program);
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GE (glUniform1i (uniform_no, value));
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}
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void
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cogl_program_uniform_float (int uniform_no,
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int size,
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int count,
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const GLfloat *value)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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program = ctx->current_program;
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g_return_if_fail (program != NULL);
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if (program->language == COGL_SHADER_LANGUAGE_ARBFP)
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{
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unsigned int _index = uniform_no;
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unsigned int index_end = _index + count;
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int i;
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int j;
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g_return_if_fail (size == 4);
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GE (glBindProgram (GL_FRAGMENT_PROGRAM_ARB, program->gl_handle));
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for (i = _index; i < index_end; i++)
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for (j = 0; j < 4; j++)
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program->arbfp_local_params[i][j] = *(value++);
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for (i = _index; i < index_end; i++)
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GE (glProgramLocalParameter4fv (GL_FRAGMENT_PROGRAM_ARB,
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i,
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&program->arbfp_local_params[i][0]));
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}
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else
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{
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_cogl_gl_use_program_wrapper (program);
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switch (size)
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{
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case 1:
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GE (glUniform1fv (uniform_no, count, value));
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break;
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case 2:
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GE (glUniform2fv (uniform_no, count, value));
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break;
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case 3:
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GE (glUniform3fv (uniform_no, count, value));
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break;
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case 4:
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GE (glUniform4fv (uniform_no, count, value));
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break;
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default:
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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}
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void
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cogl_program_uniform_int (int uniform_no,
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int size,
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int count,
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const int *value)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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program = ctx->current_program;
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g_return_if_fail (program != NULL);
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_cogl_gl_use_program_wrapper (program);
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switch (size)
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{
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case 1:
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glUniform1iv (uniform_no, count, value);
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break;
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case 2:
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glUniform2iv (uniform_no, count, value);
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break;
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case 3:
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glUniform3iv (uniform_no, count, value);
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break;
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case 4:
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glUniform4iv (uniform_no, count, value);
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break;
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default:
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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void
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cogl_program_uniform_matrix (int uniform_no,
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int size,
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int count,
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gboolean transpose,
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const GLfloat *value)
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{
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CoglProgram *program;
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_COGL_GET_CONTEXT (ctx, NO_RETVAL);
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program = ctx->current_program;
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g_return_if_fail (program != NULL);
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g_return_if_fail (program->language != COGL_SHADER_LANGUAGE_ARBFP);
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_cogl_gl_use_program_wrapper (program);
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switch (size)
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{
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case 2 :
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GE (glUniformMatrix2fv (uniform_no, count, transpose, value));
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break;
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case 3 :
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GE (glUniformMatrix3fv (uniform_no, count, transpose, value));
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break;
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case 4 :
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GE (glUniformMatrix4fv (uniform_no, count, transpose, value));
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break;
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default :
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g_warning ("%s called with invalid size parameter", G_STRFUNC);
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}
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}
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CoglShaderLanguage
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_cogl_program_get_language (CoglHandle handle)
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{
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CoglProgram *program = handle;
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return program->language;
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}
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