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Tungstend 2025-02-06 23:32:05 +08:00
parent daef7170b9
commit 4eb4adbd26
4 changed files with 73 additions and 73 deletions
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69
src/main/cpp/gl/drawing.c
View File

@ -36,72 +36,3 @@ void glMultiDrawElements(GLenum mode,const GLsizei * count,GLenum type,const voi
} }
} }
} }
void glDrawBuffer(GLenum buffer) {
LOG()
LOAD_GLES(glDrawBuffers, void, GLsizei n, const GLenum *bufs)
GLint currentFBO;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &currentFBO);
if (currentFBO == 0) { // 默认帧缓冲
GLenum buffers[1] = {GL_NONE};
switch (buffer) {
case GL_FRONT:
case GL_BACK:
case GL_NONE:
buffers[0] = buffer;
gles_glDrawBuffers(1, buffers);
break;
default:
// 生成错误：GL_INVALID_ENUM
break;
}
} else { // FBO场景
GLint maxAttachments;
glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &maxAttachments);
if (buffer == GL_NONE) {
GLenum *buffers = (GLenum *)alloca(maxAttachments * sizeof(GLenum));
for (int i = 0; i < maxAttachments; i++) {
buffers[i] = GL_NONE;
}
gles_glDrawBuffers(maxAttachments, buffers);
} else if (buffer >= GL_COLOR_ATTACHMENT0 &&
buffer < GL_COLOR_ATTACHMENT0 + maxAttachments) {
GLenum *buffers = (GLenum *)alloca(maxAttachments * sizeof(GLenum));
for (int i = 0; i < maxAttachments; i++) {
buffers[i] = (i == (buffer - GL_COLOR_ATTACHMENT0)) ? buffer : GL_NONE;
}
gles_glDrawBuffers(maxAttachments, buffers);
} else {
// 生成错误：GL_INVALID_ENUM
}
}
}
void glDrawBuffers(GLsizei n, const GLenum *bufs) {
LOG()
LOG_D("glDrawBuffers(%d, %p), [0]=0x%x", n, bufs, n ? bufs[0] : 0)
GLenum new_bufs[n];
for (int i = 0; i < n; i++) {
if (bufs[i] >= GL_COLOR_ATTACHMENT0 && bufs[i] <= GL_COLOR_ATTACHMENT0 + getMaxDrawBuffers()) {
GLenum target_attachment = GL_COLOR_ATTACHMENT0 + i;
new_bufs[i] = target_attachment;
if (bufs[i] == target_attachment)
continue;
rebind_framebuffer(bufs[i], target_attachment);
} else {
new_bufs[i] = bufs[i];
}
}
LOAD_GLES(glDrawBuffers, void, GLsizei n, const GLenum *bufs)
gles_glDrawBuffers(n, new_bufs);
CHECK_GL_ERROR
}

4
src/main/cpp/gl/drawing.h
View File

@ -21,10 +21,6 @@
GLAPI GLAPIENTRY void glMultiDrawElementsBaseVertex( GLenum mode, GLsizei *counts, GLenum type, const void * const *indices, GLsizei primcount, const GLint * basevertex); GLAPI GLAPIENTRY void glMultiDrawElementsBaseVertex( GLenum mode, GLsizei *counts, GLenum type, const void * const *indices, GLsizei primcount, const GLint * basevertex);
GLAPI GLAPIENTRY void glDrawBuffer(GLenum buf);
GLAPI GLAPIENTRY void glDrawBuffers(GLsizei n, const GLenum *bufs);
GLAPI GLAPIENTRY void glMultiDrawElements(GLenum mode,const GLsizei * count,GLenum type,const void * const * indices,GLsizei primcount); GLAPI GLAPIENTRY void glMultiDrawElements(GLenum mode,const GLsizei * count,GLenum type,const void * const * indices,GLsizei primcount);
#endif //MOBILEGLUES_DRAWING_H #endif //MOBILEGLUES_DRAWING_H

69
src/main/cpp/gl/framebuffer.c
View File

@ -97,3 +97,72 @@ void glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget,
CHECK_GL_ERROR CHECK_GL_ERROR
} }
void glDrawBuffer(GLenum buffer) {
LOG()
LOAD_GLES(glDrawBuffers, void, GLsizei n, const GLenum *bufs)
GLint currentFBO;
glGetIntegerv(GL_FRAMEBUFFER_BINDING, &currentFBO);
if (currentFBO == 0) { // 默认帧缓冲
GLenum buffers[1] = {GL_NONE};
switch (buffer) {
case GL_FRONT:
case GL_BACK:
case GL_NONE:
buffers[0] = buffer;
gles_glDrawBuffers(1, buffers);
break;
default:
// 生成错误：GL_INVALID_ENUM
break;
}
} else { // FBO场景
GLint maxAttachments;
glGetIntegerv(GL_MAX_COLOR_ATTACHMENTS, &maxAttachments);
if (buffer == GL_NONE) {
GLenum *buffers = (GLenum *)alloca(maxAttachments * sizeof(GLenum));
for (int i = 0; i < maxAttachments; i++) {
buffers[i] = GL_NONE;
}
gles_glDrawBuffers(maxAttachments, buffers);
} else if (buffer >= GL_COLOR_ATTACHMENT0 &&
buffer < GL_COLOR_ATTACHMENT0 + maxAttachments) {
GLenum *buffers = (GLenum *)alloca(maxAttachments * sizeof(GLenum));
for (int i = 0; i < maxAttachments; i++) {
buffers[i] = (i == (buffer - GL_COLOR_ATTACHMENT0)) ? buffer : GL_NONE;
}
gles_glDrawBuffers(maxAttachments, buffers);
} else {
// 生成错误：GL_INVALID_ENUM
}
}
}
void glDrawBuffers(GLsizei n, const GLenum *bufs) {
LOG()
LOG_D("glDrawBuffers(%d, %p), [0]=0x%x", n, bufs, n ? bufs[0] : 0)
GLenum new_bufs[n];
for (int i = 0; i < n; i++) {
if (bufs[i] >= GL_COLOR_ATTACHMENT0 && bufs[i] <= GL_COLOR_ATTACHMENT0 + getMaxDrawBuffers()) {
GLenum target_attachment = GL_COLOR_ATTACHMENT0 + i;
new_bufs[i] = target_attachment;
if (bufs[i] == target_attachment)
continue;
rebind_framebuffer(bufs[i], target_attachment);
} else {
new_bufs[i] = bufs[i];
}
}
LOAD_GLES(glDrawBuffers, void, GLsizei n, const GLenum *bufs)
gles_glDrawBuffers(n, new_bufs);
CHECK_GL_ERROR
}

4
src/main/cpp/gl/framebuffer.h
View File

@ -29,4 +29,8 @@ GLAPI GLAPIENTRY void glBindFramebuffer(GLenum target, GLuint framebuffer);
GLAPI GLAPIENTRY void glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level); GLAPI GLAPIENTRY void glFramebufferTexture2D(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level);
GLAPI GLAPIENTRY void glDrawBuffer(GLenum buf);
GLAPI GLAPIENTRY void glDrawBuffers(GLsizei n, const GLenum *bufs);
#endif //MOBILEGLUES_FRAMEBUFFER_H #endif //MOBILEGLUES_FRAMEBUFFER_H