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Add multisampling to libretro-test-gl.

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This commit is contained in:
Themaister 2013-07-05 22:36:30 +02:00
parent 60b7d633a1
commit e40e41ee22
1 changed files with 59 additions and 2 deletions
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61
libretro-test-gl/libretro-test.c
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@ -27,7 +27,11 @@ static GLuint prog;
static GLuint vbo;
#ifdef CORE
static bool multisample_fbo;
static GLuint vao;
static GLuint fbo;
static GLuint rbo_color, rbo_depth_stencil;
#endif
static const GLfloat vertex_data[] = {
@ -107,7 +111,43 @@ static void setup_vao(void)
{
#ifdef CORE
glGenVertexArrays(1, &vao);
glGenRenderbuffers(1, &rbo_color);
glGenRenderbuffers(1, &rbo_depth_stencil);
glGenFramebuffers(1, &fbo);
multisample_fbo = false;
if (glRenderbufferStorageMultisample)
{
glBindRenderbuffer(GL_RENDERBUFFER, rbo_color);
glRenderbufferStorageMultisample(GL_RENDERBUFFER,
4, GL_RGBA, MAX_WIDTH, MAX_HEIGHT);
glBindRenderbuffer(GL_RENDERBUFFER, rbo_depth_stencil);
glRenderbufferStorageMultisample(GL_RENDERBUFFER,
4, GL_DEPTH24_STENCIL8, MAX_WIDTH, MAX_HEIGHT);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER, rbo_color);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT,
GL_RENDERBUFFER, rbo_depth_stencil);
GLenum ret = glCheckFramebufferStatus(GL_FRAMEBUFFER);
if (ret == GL_FRAMEBUFFER_COMPLETE)
{
fprintf(stderr, "Using multisampled FBO.\n");
multisample_fbo = true;
}
else
fprintf(stderr, "Multisampled FBO failed.\n");
glBindFramebuffer(GL_FRAMEBUFFER, 0);
}
#endif
glUseProgram(prog);
glGenBuffers(1, &vbo);
@ -247,9 +287,12 @@ void retro_run(void)
#ifdef CORE
glBindVertexArray(vao);
if (multisample_fbo)
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
else
#endif
glBindFramebuffer(GL_FRAMEBUFFER, hw_render.get_current_framebuffer());
glBindFramebuffer(GL_FRAMEBUFFER, hw_render.get_current_framebuffer());
glClearColor(0.3, 0.4, 0.5, 1.0);
glViewport(0, 0, width, height);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
@ -300,10 +343,20 @@ void retro_run(void)
glUseProgram(0);
video_cb(RETRO_HW_FRAME_BUFFER_VALID, width, height, 0);
#ifdef CORE
glBindVertexArray(0);
if (multisample_fbo) // Resolve the multisample.
{
glBindFramebuffer(GL_READ_FRAMEBUFFER, fbo);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, hw_render.get_current_framebuffer());
glBlitFramebuffer(0, 0, width, height,
0, 0, width, height,
GL_COLOR_BUFFER_BIT, GL_NEAREST);
glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
}
#endif
video_cb(RETRO_HW_FRAME_BUFFER_VALID, width, height, 0);
}
static void context_reset(void)
@ -321,6 +374,10 @@ static void context_destroy(void)
#ifdef CORE
glDeleteVertexArrays(1, &vao);
vao = 0;
glDeleteRenderbuffers(1, &rbo_color);
glDeleteRenderbuffers(1, &rbo_depth_stencil);
glDeleteFramebuffers(1, &fbo);
rbo_color = rbo_depth_stencil = fbo = 0;
#endif
glDeleteBuffers(1, &vbo);
vbo = 0;