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port: gl: don't die without fbo support

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fgsfds committed 2023-09-26 15:28:43 +02:00
1 parent 8aa1e6b9c9
commit 4638af52e2
3 files changed
+54 -41
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port/fast3d/gfx_opengl.cpp
+51 -40
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@@ -922,8 +922,8 @@ static void gfx_opengl_init(void) {
}
if (!gfx_opengl_supports_framebuffers()) {
sysLogPrintf(LOG_WARNING, "GL: GL_ARB_framebuffer_object unsupported, framebuffer effects will be broken");
// TODO: actually disable fb usage
sysLogPrintf(LOG_WARNING, "GL: GL_ARB_framebuffer_object unsupported, framebuffer effects disabled");
gfx_framebuffers_enabled = false;
}
if ((GLVersion.major < 4 || GLVersion.minor < 4) && !GLAD_GL_ARB_texture_mirror_clamp_to_edge) {
@@ -963,6 +963,9 @@ static void gfx_opengl_finish_render(void) {
}
static int gfx_opengl_create_framebuffer() {
size_t i = framebuffers.size();
framebuffers.resize(i + 1);
GLuint clrbuf;
glGenTextures(1, &clrbuf);
glBindTexture(GL_TEXTURE_2D, clrbuf);
@@ -970,26 +973,26 @@ static int gfx_opengl_create_framebuffer() {
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glBindTexture(GL_TEXTURE_2D, 0);
framebuffers[i].clrbuf = clrbuf;
if (!gfx_framebuffers_enabled) {
return i;
}
GLuint clrbuf_msaa;
glGenRenderbuffers(1, &clrbuf_msaa);
framebuffers[i].clrbuf_msaa = clrbuf_msaa;
GLuint rbo;
glGenRenderbuffers(1, &rbo);
glBindRenderbuffer(GL_RENDERBUFFER, rbo);
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, 1, 1);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
framebuffers[i].rbo = rbo;
GLuint fbo;
glGenFramebuffers(1, &fbo);
size_t i = framebuffers.size();
framebuffers.resize(i + 1);
framebuffers[i].fbo = fbo;
framebuffers[i].clrbuf = clrbuf;
framebuffers[i].clrbuf_msaa = clrbuf_msaa;
framebuffers[i].rbo = rbo;
return i;
}
@@ -1002,39 +1005,43 @@ static void gfx_opengl_update_framebuffer_parameters(int fb_id, uint32_t width,
width = max(width, 1U);
height = max(height, 1U);
glBindFramebuffer(GL_FRAMEBUFFER, fb.fbo);
if (gfx_framebuffers_enabled) {
glBindFramebuffer(GL_FRAMEBUFFER, fb.fbo);
if (fb_id != 0) {
if (fb.width != width || fb.height != height || fb.msaa_level != msaa_level) {
if (msaa_level <= 1) {
glBindTexture(GL_TEXTURE_2D, fb.clrbuf);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb.clrbuf, 0);
} else {
glBindRenderbuffer(GL_RENDERBUFFER, fb.clrbuf_msaa);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_RGB8, width, height);
if (fb_id != 0) {
if (fb.width != width || fb.height != height || fb.msaa_level != msaa_level) {
if (msaa_level <= 1) {
glBindTexture(GL_TEXTURE_2D, fb.clrbuf);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB8, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, NULL);
glBindTexture(GL_TEXTURE_2D, 0);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb.clrbuf, 0);
} else {
glBindRenderbuffer(GL_RENDERBUFFER, fb.clrbuf_msaa);
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_RGB8, width, height);
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fb.clrbuf_msaa);
}
}
if (has_depth_buffer &&
(fb.width != width || fb.height != height || fb.msaa_level != msaa_level || !fb.has_depth_buffer)) {
glBindRenderbuffer(GL_RENDERBUFFER, fb.rbo);
if (msaa_level <= 1) {
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
} else {
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_DEPTH24_STENCIL8, width, height);
}
glBindRenderbuffer(GL_RENDERBUFFER, 0);
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, fb.clrbuf_msaa);
}
if (!fb.has_depth_buffer && has_depth_buffer) {
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb.rbo);
} else if (fb.has_depth_buffer && !has_depth_buffer) {
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
}
}
if (has_depth_buffer &&
(fb.width != width || fb.height != height || fb.msaa_level != msaa_level || !fb.has_depth_buffer)) {
glBindRenderbuffer(GL_RENDERBUFFER, fb.rbo);
if (msaa_level <= 1) {
glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
} else {
glRenderbufferStorageMultisample(GL_RENDERBUFFER, msaa_level, GL_DEPTH24_STENCIL8, width, height);
}
glBindRenderbuffer(GL_RENDERBUFFER, 0);
}
if (!fb.has_depth_buffer && has_depth_buffer) {
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, fb.rbo);
} else if (fb.has_depth_buffer && !has_depth_buffer) {
glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, 0);
}
} else {
has_depth_buffer = false;
}
fb.width = width;
@@ -1045,7 +1052,7 @@ static void gfx_opengl_update_framebuffer_parameters(int fb_id, uint32_t width,
}
bool gfx_opengl_start_draw_to_framebuffer(int fb_id, float noise_scale) {
if (fb_id < (int)framebuffers.size()) {
if (gfx_framebuffers_enabled && fb_id < (int)framebuffers.size()) {
Framebuffer& fb = framebuffers[fb_id];
if (noise_scale != 0.0f) {
current_noise_scale = 1.0f / noise_scale;
@@ -1068,6 +1075,10 @@ void gfx_opengl_clear_framebuffer() {
}
void gfx_opengl_resolve_msaa_color_buffer(int fb_id_target, int fb_id_source) {
if (!gfx_framebuffers_enabled) {
return;
}
Framebuffer& fb_dst = framebuffers[fb_id_target];
Framebuffer& fb_src = framebuffers[fb_id_source];
glDisable(GL_SCISSOR_TEST);
@@ -1090,7 +1101,7 @@ void gfx_opengl_select_texture_fb(int fb_id) {
}
void gfx_opengl_copy_framebuffer(int fb_dst, int fb_src, int left, int top) {
if (fb_dst >= (int)framebuffers.size() || fb_src >= (int)framebuffers.size()) {
if (!gfx_framebuffers_enabled || fb_dst >= (int)framebuffers.size() || fb_src >= (int)framebuffers.size()) {
return;
}