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update parallel rdp

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This commit is contained in:
Logan McNaughton committed 2021-06-24 07:55:56 -06:00
1 parent 351be30b55
commit 0ef65dba0e
1 file changed
+26 -25
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parallel-rdp-standalone/glguts.c
+26 -25
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@@ -48,7 +48,7 @@ static PFNGLGETUNIFORMLOCATIONPROC glGetUniformLocation;
static PFNGLUNIFORM1IPROC glUniform1i;
static bool toggle_fs;
static int toggle_buffer;
static int rotate_buffer;
// framebuffer texture states
int32_t window_width;
@@ -59,16 +59,17 @@ int32_t window_widescreen;
#define SHADER_HEADER "#version 330 core\n"
#define TEX_FORMAT GL_RGBA
#define TEX_TYPE GL_UNSIGNED_BYTE
#define TEX_NUM 3
static GLuint program;
static GLuint vao;
static GLuint buffer;
static GLuint texture[2];
static GLuint texture[TEX_NUM];
static uint8_t *buffer_data;
static uint32_t buffer_size = (640*8) * (480*8) * sizeof(uint32_t);
int32_t tex_width[2];
int32_t tex_height[2];
int32_t tex_width[TEX_NUM];
int32_t tex_height[TEX_NUM];
int display_width;
int display_height;
@@ -167,30 +168,30 @@ static GLuint gl_shader_link(GLuint vert, GLuint frag)
void screen_write(struct frame_buffer *fb)
{
bool buffer_size_changed = tex_width[toggle_buffer] != fb->width || tex_height[toggle_buffer] != fb->height;
bool buffer_size_changed = tex_width[rotate_buffer] != fb->width || tex_height[rotate_buffer] != fb->height;
char* offset = NULL;
offset += toggle_buffer * buffer_size;
offset += rotate_buffer * buffer_size;
glBindTexture(GL_TEXTURE_2D, texture[toggle_buffer]);
glBindTexture(GL_TEXTURE_2D, texture[rotate_buffer]);
// check if the framebuffer size has changed
if (buffer_size_changed)
{
tex_width[toggle_buffer] = fb->width;
tex_height[toggle_buffer] = fb->height;
tex_width[rotate_buffer] = fb->width;
tex_height[rotate_buffer] = fb->height;
// set pitch for all unpacking operations
glPixelStorei(GL_UNPACK_ROW_LENGTH, fb->pitch);
// reallocate texture buffer on GPU
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width[toggle_buffer],
tex_height[toggle_buffer], 0, TEX_FORMAT, TEX_TYPE, offset);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, tex_width[rotate_buffer],
tex_height[rotate_buffer], 0, TEX_FORMAT, TEX_TYPE, offset);
}
else
{
// copy local buffer to GPU texture buffer
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex_width[toggle_buffer], tex_height[toggle_buffer],
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, tex_width[rotate_buffer], tex_height[rotate_buffer],
TEX_FORMAT, TEX_TYPE, offset);
}
toggle_buffer = !toggle_buffer;
rotate_buffer = (rotate_buffer + 1) % 3;
}
void screen_read(struct frame_buffer *fb, bool alpha)
@@ -246,7 +247,7 @@ void gl_screen_clear(void)
void gl_screen_close(void)
{
glUnmapBuffer(GL_PIXEL_UNPACK_BUFFER);
glDeleteTextures(2, &texture[0]);
glDeleteTextures(TEX_NUM, &texture[0]);
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &buffer);
glDeleteProgram(program);
@@ -254,7 +255,7 @@ void gl_screen_close(void)
uint8_t* screen_get_texture_data()
{
return buffer_data + (toggle_buffer * buffer_size);
return buffer_data + (rotate_buffer * buffer_size);
}
void screen_init()
@@ -264,7 +265,7 @@ void screen_init()
tex_width[1] = 0;
tex_height[1] = 0;
toggle_fs = false;
toggle_buffer = 0;
rotate_buffer = 0;
/* Get the core Video Extension function pointers from the library handle */
CoreVideo_Init = (ptr_VidExt_Init)DLSYM(CoreLibHandle, "VidExt_Init");
CoreVideo_Quit = (ptr_VidExt_Quit)DLSYM(CoreLibHandle, "VidExt_Quit");
@@ -343,18 +344,18 @@ void screen_init()
glBindVertexArray(vao);
// prepare texture
glGenTextures(2, &texture[0]);
glBindTexture(GL_TEXTURE_2D, texture[0]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glBindTexture(GL_TEXTURE_2D, texture[1]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glGenTextures(TEX_NUM, &texture[0]);
for (int i = 0; i < TEX_NUM; ++i)
{
glBindTexture(GL_TEXTURE_2D, texture[i]);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
}
glGenBuffers(1, &buffer);
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, buffer);
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, buffer_size * 2, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
buffer_data = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, buffer_size * 2, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, buffer_size * TEX_NUM, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
buffer_data = glMapBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, buffer_size * TEX_NUM, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT | GL_MAP_COHERENT_BIT);
// check if there was an error when using any of the commands above
gl_check_errors();