diff options
| -rw-r--r-- | pugl/cairo_gl.h | 99 | ||||
| -rw-r--r-- | pugl/pugl_osx.m | 8 |
2 files changed, 104 insertions, 3 deletions
diff --git a/pugl/cairo_gl.h b/pugl/cairo_gl.h new file mode 100644 index 0000000..24aacdd --- /dev/null +++ b/pugl/cairo_gl.h @@ -0,0 +1,99 @@ +/* + Copyright 2016-2019 David Robillard <http://drobilla.net> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +*/ + +#if defined(PUGL_HAVE_GL) && defined(PUGL_HAVE_CAIRO) + +#include "pugl/gl.h" + +#include <cairo/cairo.h> +#include <stdint.h> + +typedef struct { + unsigned texture_id; + uint8_t* buffer; +} PuglCairoGL; + +static cairo_surface_t* +pugl_cairo_gl_create(PuglCairoGL* ctx, int width, int height, int bpp) +{ + free(ctx->buffer); + ctx->buffer = (uint8_t*)calloc(bpp * width * height, sizeof(uint8_t)); + if (!ctx->buffer) { + return NULL; + } + + glDeleteTextures(1, &ctx->texture_id); + glGenTextures(1, &ctx->texture_id); + glBindTexture(GL_TEXTURE_RECTANGLE_ARB, ctx->texture_id); + glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_DECAL); + + return cairo_image_surface_create_for_data( + ctx->buffer, CAIRO_FORMAT_ARGB32, width, height, bpp * width); +} + +static void +pugl_cairo_gl_free(PuglCairoGL* ctx) +{ + free(ctx->buffer); + ctx->buffer = NULL; +} + +static void +pugl_cairo_gl_configure(PuglCairoGL* ctx, int width, int height) +{ + glDisable(GL_DEPTH_TEST); + glEnable(GL_TEXTURE_RECTANGLE_ARB); + + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f); +} + +static void +pugl_cairo_gl_draw(PuglCairoGL* ctx, int width, int height) +{ + glMatrixMode(GL_MODELVIEW); + glLoadIdentity(); + glViewport(0, 0, width, height); + + glPushMatrix(); + glEnable(GL_TEXTURE_RECTANGLE_ARB); + glEnable(GL_TEXTURE_2D); + + glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8, + width, height, 0, + GL_BGRA, GL_UNSIGNED_BYTE, ctx->buffer); + + glBegin(GL_QUADS); + glTexCoord2f(0.0f, (GLfloat)height); + glVertex2f(-1.0f, -1.0f); + + glTexCoord2f((GLfloat)width, (GLfloat)height); + glVertex2f(1.0f, -1.0f); + + glTexCoord2f((GLfloat)width, 0.0f); + glVertex2f(1.0f, 1.0f); + + glTexCoord2f(0.0f, 0.0f); + glVertex2f(-1.0f, 1.0f); + glEnd(); + + glDisable(GL_TEXTURE_2D); + glDisable(GL_TEXTURE_RECTANGLE_ARB); + glPopMatrix(); +} + +#endif diff --git a/pugl/pugl_osx.m b/pugl/pugl_osx.m index a283283..4a44dab 100644 --- a/pugl/pugl_osx.m +++ b/pugl/pugl_osx.m @@ -1,5 +1,5 @@ /* - Copyright 2012-2017 David Robillard <http://drobilla.net> + Copyright 2012-2019 David Robillard <http://drobilla.net> Copyright 2017 Hanspeter Portner <dev@open-music-kontrollers.ch> Permission to use, copy, modify, and/or distribute this software for any @@ -24,13 +24,15 @@ #include "pugl/gl.h" #include "pugl/pugl_internal.h" +#ifdef PUGL_HAVE_CAIRO +#include "pugl/cairo_gl.h" +#endif + #import <Cocoa/Cocoa.h> #include <stdlib.h> #include <time.h> -#undef PUGL_HAVE_CAIRO - @class PuglOpenGLView; struct PuglInternalsImpl { |