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Diffstat (limited to 'src/glx/indirect_vertex_array.c')
| -rw-r--r-- | src/glx/indirect_vertex_array.c | 1985 |
1 files changed, 1985 insertions, 0 deletions
diff --git a/src/glx/indirect_vertex_array.c b/src/glx/indirect_vertex_array.c new file mode 100644 index 00000000000..ad9882528ff --- /dev/null +++ b/src/glx/indirect_vertex_array.c @@ -0,0 +1,1985 @@ +/* + * (C) Copyright IBM Corporation 2004, 2005 + * All Rights Reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sub license, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL + * IBM, + * AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF + * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include <inttypes.h> +#include <assert.h> +#include <string.h> + +#include "glxclient.h" +#include "indirect.h" +#include <GL/glxproto.h> +#include "glxextensions.h" +#include "indirect_vertex_array.h" +#include "indirect_vertex_array_priv.h" + +#define __GLX_PAD(n) (((n)+3) & ~3) + +/** + * \file indirect_vertex_array.c + * Implement GLX protocol for vertex arrays and vertex buffer objects. + * + * The most important function in this fill is \c fill_array_info_cache. + * The \c array_state_vector contains a cache of the ARRAY_INFO data sent + * in the DrawArrays protocol. Certain operations, such as enabling or + * disabling an array, can invalidate this cache. \c fill_array_info_cache + * fills-in this data. Additionally, it examines the enabled state and + * other factors to determine what "version" of DrawArrays protocoal can be + * used. + * + * Current, only two versions of DrawArrays protocol are implemented. The + * first version is the "none" protocol. This is the fallback when the + * server does not support GL 1.1 / EXT_vertex_arrays. It is implemented + * by sending batches of immediate mode commands that are equivalent to the + * DrawArrays protocol. + * + * The other protocol that is currently implemented is the "old" protocol. + * This is the GL 1.1 DrawArrays protocol. The only difference between GL + * 1.1 and EXT_vertex_arrays is the opcode used for the DrawArrays command. + * This protocol is called "old" because the ARB is in the process of + * defining a new protocol, which will probably be called wither "new" or + * "vbo", to support multiple texture coordinate arrays, generic attributes, + * and vertex buffer objects. + * + * \author Ian Romanick <[email protected]> + */ + +static void emit_DrawArrays_none(GLenum mode, GLint first, GLsizei count); +static void emit_DrawArrays_old(GLenum mode, GLint first, GLsizei count); + +static void emit_DrawElements_none(GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices); +static void emit_DrawElements_old(GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices); + + +static GLubyte *emit_element_none(GLubyte * dst, + const struct array_state_vector *arrays, + unsigned index); +static GLubyte *emit_element_old(GLubyte * dst, + const struct array_state_vector *arrays, + unsigned index); +static struct array_state *get_array_entry(const struct array_state_vector + *arrays, GLenum key, + unsigned index); +static void fill_array_info_cache(struct array_state_vector *arrays); +static GLboolean validate_mode(__GLXcontext * gc, GLenum mode); +static GLboolean validate_count(__GLXcontext * gc, GLsizei count); +static GLboolean validate_type(__GLXcontext * gc, GLenum type); + + +/** + * Table of sizes, in bytes, of a GL types. All of the type enums are be in + * the range 0x1400 - 0x140F. That includes types added by extensions (i.e., + * \c GL_HALF_FLOAT_NV). This elements of this table correspond to the + * type enums masked with 0x0f. + * + * \notes + * \c GL_HALF_FLOAT_NV is not included. Neither are \c GL_2_BYTES, + * \c GL_3_BYTES, or \c GL_4_BYTES. + */ +const GLuint __glXTypeSize_table[16] = { + 1, 1, 2, 2, 4, 4, 4, 0, 0, 0, 8, 0, 0, 0, 0, 0 +}; + + +/** + * Free the per-context array state that was allocated with + * __glXInitVertexArrayState(). + */ +void +__glXFreeVertexArrayState(__GLXcontext * gc) +{ + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + if (arrays) { + if (arrays->stack) { + free(arrays->stack); + arrays->stack = NULL; + } + if (arrays->arrays) { + free(arrays->arrays); + arrays->arrays = NULL; + } + free(arrays); + state->array_state = NULL; + } +} + + +/** + * Initialize vertex array state of a GLX context. + * + * \param gc GLX context whose vertex array state is to be initialized. + * + * \warning + * This function may only be called after __GLXcontext::gl_extension_bits, + * __GLXcontext::server_minor, and __GLXcontext::server_major have been + * initialized. These values are used to determine what vertex arrays are + * supported. + * + * \bug + * Return values from malloc are not properly tested. + */ +void +__glXInitVertexArrayState(__GLXcontext * gc) +{ + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays; + + unsigned array_count; + int texture_units = 1, vertex_program_attribs = 0; + unsigned i, j; + + GLboolean got_fog = GL_FALSE; + GLboolean got_secondary_color = GL_FALSE; + + + arrays = calloc(1, sizeof(struct array_state_vector)); + state->array_state = arrays; + + arrays->old_DrawArrays_possible = !state->NoDrawArraysProtocol; + arrays->new_DrawArrays_possible = GL_FALSE; + arrays->DrawArrays = NULL; + + arrays->active_texture_unit = 0; + + + /* Determine how many arrays are actually needed. Only arrays that + * are supported by the server are create. For example, if the server + * supports only 2 texture units, then only 2 texture coordinate arrays + * are created. + * + * At the very least, GL_VERTEX_ARRAY, GL_NORMAL_ARRAY, + * GL_COLOR_ARRAY, GL_INDEX_ARRAY, GL_TEXTURE_COORD_ARRAY, and + * GL_EDGE_FLAG_ARRAY are supported. + */ + + array_count = 5; + + if (__glExtensionBitIsEnabled(gc, GL_EXT_fog_coord_bit) + || (gc->server_major > 1) || (gc->server_minor >= 4)) { + got_fog = GL_TRUE; + array_count++; + } + + if (__glExtensionBitIsEnabled(gc, GL_EXT_secondary_color_bit) + || (gc->server_major > 1) || (gc->server_minor >= 4)) { + got_secondary_color = GL_TRUE; + array_count++; + } + + if (__glExtensionBitIsEnabled(gc, GL_ARB_multitexture_bit) + || (gc->server_major > 1) || (gc->server_minor >= 3)) { + __indirect_glGetIntegerv(GL_MAX_TEXTURE_UNITS, &texture_units); + } + + if (__glExtensionBitIsEnabled(gc, GL_ARB_vertex_program_bit)) { + __indirect_glGetProgramivARB(GL_VERTEX_PROGRAM_ARB, + GL_MAX_PROGRAM_ATTRIBS_ARB, + &vertex_program_attribs); + } + + arrays->num_texture_units = texture_units; + arrays->num_vertex_program_attribs = vertex_program_attribs; + array_count += texture_units + vertex_program_attribs; + arrays->num_arrays = array_count; + arrays->arrays = calloc(array_count, sizeof(struct array_state)); + + arrays->arrays[0].data_type = GL_FLOAT; + arrays->arrays[0].count = 3; + arrays->arrays[0].key = GL_NORMAL_ARRAY; + arrays->arrays[0].normalized = GL_TRUE; + arrays->arrays[0].old_DrawArrays_possible = GL_TRUE; + + arrays->arrays[1].data_type = GL_FLOAT; + arrays->arrays[1].count = 4; + arrays->arrays[1].key = GL_COLOR_ARRAY; + arrays->arrays[1].normalized = GL_TRUE; + arrays->arrays[1].old_DrawArrays_possible = GL_TRUE; + + arrays->arrays[2].data_type = GL_FLOAT; + arrays->arrays[2].count = 1; + arrays->arrays[2].key = GL_INDEX_ARRAY; + arrays->arrays[2].old_DrawArrays_possible = GL_TRUE; + + arrays->arrays[3].data_type = GL_UNSIGNED_BYTE; + arrays->arrays[3].count = 1; + arrays->arrays[3].key = GL_EDGE_FLAG_ARRAY; + arrays->arrays[3].old_DrawArrays_possible = GL_TRUE; + + for (i = 0; i < texture_units; i++) { + arrays->arrays[4 + i].data_type = GL_FLOAT; + arrays->arrays[4 + i].count = 4; + arrays->arrays[4 + i].key = GL_TEXTURE_COORD_ARRAY; + + arrays->arrays[4 + i].old_DrawArrays_possible = (i == 0); + arrays->arrays[4 + i].index = i; + + arrays->arrays[4 + i].header[1] = i + GL_TEXTURE0; + } + + i = 4 + texture_units; + + if (got_fog) { + arrays->arrays[i].data_type = GL_FLOAT; + arrays->arrays[i].count = 1; + arrays->arrays[i].key = GL_FOG_COORDINATE_ARRAY; + arrays->arrays[i].old_DrawArrays_possible = GL_TRUE; + i++; + } + + if (got_secondary_color) { + arrays->arrays[i].data_type = GL_FLOAT; + arrays->arrays[i].count = 3; + arrays->arrays[i].key = GL_SECONDARY_COLOR_ARRAY; + arrays->arrays[i].old_DrawArrays_possible = GL_TRUE; + arrays->arrays[i].normalized = GL_TRUE; + i++; + } + + + for (j = 0; j < vertex_program_attribs; j++) { + const unsigned idx = (vertex_program_attribs - (j + 1)); + + + arrays->arrays[idx + i].data_type = GL_FLOAT; + arrays->arrays[idx + i].count = 4; + arrays->arrays[idx + i].key = GL_VERTEX_ATTRIB_ARRAY_POINTER; + + arrays->arrays[idx + i].old_DrawArrays_possible = 0; + arrays->arrays[idx + i].index = idx; + + arrays->arrays[idx + i].header[1] = idx; + } + + i += vertex_program_attribs; + + + /* Vertex array *must* be last becuase of the way that + * emit_DrawArrays_none works. + */ + + arrays->arrays[i].data_type = GL_FLOAT; + arrays->arrays[i].count = 4; + arrays->arrays[i].key = GL_VERTEX_ARRAY; + arrays->arrays[i].old_DrawArrays_possible = GL_TRUE; + + assert((i + 1) == arrays->num_arrays); + + arrays->stack_index = 0; + arrays->stack = malloc(sizeof(struct array_stack_state) + * arrays->num_arrays); +} + + +/** + * Calculate the size of a single vertex for the "none" protocol. This is + * essentially the size of all the immediate-mode commands required to + * implement the enabled vertex arrays. + */ +static size_t +calculate_single_vertex_size_none(const struct array_state_vector *arrays) +{ + size_t single_vertex_size = 0; + unsigned i; + + + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + single_vertex_size += ((uint16_t *) arrays->arrays[i].header)[0]; + } + } + + return single_vertex_size; +} + + +/** + * Emit a single element using non-DrawArrays protocol. + */ +GLubyte * +emit_element_none(GLubyte * dst, + const struct array_state_vector * arrays, unsigned index) +{ + unsigned i; + + + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + const size_t offset = index * arrays->arrays[i].true_stride; + + /* The generic attributes can have more data than is in the + * elements. This is because a vertex array can be a 2 element, + * normalized, unsigned short, but the "closest" immediate mode + * protocol is for a 4Nus. Since the sizes are small, the + * performance impact on modern processors should be negligible. + */ + (void) memset(dst, 0, ((uint16_t *) arrays->arrays[i].header)[0]); + + (void) memcpy(dst, arrays->arrays[i].header, + arrays->arrays[i].header_size); + + dst += arrays->arrays[i].header_size; + + (void) memcpy(dst, ((GLubyte *) arrays->arrays[i].data) + offset, + arrays->arrays[i].element_size); + + dst += __GLX_PAD(arrays->arrays[i].element_size); + } + } + + return dst; +} + + +/** + * Emit a single element using "old" DrawArrays protocol from + * EXT_vertex_arrays / OpenGL 1.1. + */ +GLubyte * +emit_element_old(GLubyte * dst, + const struct array_state_vector * arrays, unsigned index) +{ + unsigned i; + + + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + const size_t offset = index * arrays->arrays[i].true_stride; + + (void) memcpy(dst, ((GLubyte *) arrays->arrays[i].data) + offset, + arrays->arrays[i].element_size); + + dst += __GLX_PAD(arrays->arrays[i].element_size); + } + } + + return dst; +} + + +struct array_state * +get_array_entry(const struct array_state_vector *arrays, + GLenum key, unsigned index) +{ + unsigned i; + + for (i = 0; i < arrays->num_arrays; i++) { + if ((arrays->arrays[i].key == key) + && (arrays->arrays[i].index == index)) { + return &arrays->arrays[i]; + } + } + + return NULL; +} + + +static GLboolean +allocate_array_info_cache(struct array_state_vector *arrays, + size_t required_size) +{ +#define MAX_HEADER_SIZE 20 + if (arrays->array_info_cache_buffer_size < required_size) { + GLubyte *temp = realloc(arrays->array_info_cache_base, + required_size + MAX_HEADER_SIZE); + + if (temp == NULL) { + return GL_FALSE; + } + + arrays->array_info_cache_base = temp; + arrays->array_info_cache = temp + MAX_HEADER_SIZE; + arrays->array_info_cache_buffer_size = required_size; + } + + arrays->array_info_cache_size = required_size; + return GL_TRUE; +} + + +/** + */ +void +fill_array_info_cache(struct array_state_vector *arrays) +{ + GLboolean old_DrawArrays_possible; + unsigned i; + + + /* Determine how many arrays are enabled. + */ + + arrays->enabled_client_array_count = 0; + old_DrawArrays_possible = arrays->old_DrawArrays_possible; + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + arrays->enabled_client_array_count++; + old_DrawArrays_possible &= arrays->arrays[i].old_DrawArrays_possible; + } + } + + if (arrays->new_DrawArrays_possible) { + assert(!arrays->new_DrawArrays_possible); + } + else if (old_DrawArrays_possible) { + const size_t required_size = arrays->enabled_client_array_count * 12; + uint32_t *info; + + + if (!allocate_array_info_cache(arrays, required_size)) { + return; + } + + + info = (uint32_t *) arrays->array_info_cache; + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + *(info++) = arrays->arrays[i].data_type; + *(info++) = arrays->arrays[i].count; + *(info++) = arrays->arrays[i].key; + } + } + + arrays->DrawArrays = emit_DrawArrays_old; + arrays->DrawElements = emit_DrawElements_old; + } + else { + arrays->DrawArrays = emit_DrawArrays_none; + arrays->DrawElements = emit_DrawElements_none; + } + + arrays->array_info_cache_valid = GL_TRUE; +} + + +/** + * Emit a \c glDrawArrays command using the "none" protocol. That is, + * emit immediate-mode commands that are equivalent to the requiested + * \c glDrawArrays command. This is used with servers that don't support + * the OpenGL 1.1 / EXT_vertex_arrays DrawArrays protocol or in cases where + * vertex state is enabled that is not compatible with that protocol. + */ +void +emit_DrawArrays_none(GLenum mode, GLint first, GLsizei count) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + size_t single_vertex_size; + GLubyte *pc; + unsigned i; + static const uint16_t begin_cmd[2] = { 8, X_GLrop_Begin }; + static const uint16_t end_cmd[2] = { 4, X_GLrop_End }; + + + single_vertex_size = calculate_single_vertex_size_none(arrays); + + pc = gc->pc; + + (void) memcpy(pc, begin_cmd, 4); + *(int *) (pc + 4) = mode; + + pc += 8; + + for (i = 0; i < count; i++) { + if ((pc + single_vertex_size) >= gc->bufEnd) { + pc = __glXFlushRenderBuffer(gc, pc); + } + + pc = emit_element_none(pc, arrays, first + i); + } + + if ((pc + 4) >= gc->bufEnd) { + pc = __glXFlushRenderBuffer(gc, pc); + } + + (void) memcpy(pc, end_cmd, 4); + pc += 4; + + gc->pc = pc; + if (gc->pc > gc->limit) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } +} + + +/** + * Emit the header data for the GL 1.1 / EXT_vertex_arrays DrawArrays + * protocol. + * + * \param gc GLX context. + * \param arrays Array state. + * \param elements_per_request Location to store the number of elements that + * can fit in a single Render / RenderLarge + * command. + * \param total_request Total number of requests for a RenderLarge + * command. If a Render command is used, this + * will be zero. + * \param mode Drawing mode. + * \param count Number of vertices. + * + * \returns + * A pointer to the buffer for array data. + */ +static GLubyte * +emit_DrawArrays_header_old(__GLXcontext * gc, + struct array_state_vector *arrays, + size_t * elements_per_request, + unsigned int *total_requests, + GLenum mode, GLsizei count) +{ + size_t command_size; + size_t single_vertex_size; + const unsigned header_size = 16; + unsigned i; + GLubyte *pc; + + + /* Determine the size of the whole command. This includes the header, + * the ARRAY_INFO data and the array data. Once this size is calculated, + * it will be known whether a Render or RenderLarge command is needed. + */ + + single_vertex_size = 0; + for (i = 0; i < arrays->num_arrays; i++) { + if (arrays->arrays[i].enabled) { + single_vertex_size += __GLX_PAD(arrays->arrays[i].element_size); + } + } + + command_size = arrays->array_info_cache_size + header_size + + (single_vertex_size * count); + + + /* Write the header for either a Render command or a RenderLarge + * command. After the header is written, write the ARRAY_INFO data. + */ + + if (command_size > gc->maxSmallRenderCommandSize) { + /* maxSize is the maximum amount of data can be stuffed into a single + * packet. sz_xGLXRenderReq is added because bufSize is the maximum + * packet size minus sz_xGLXRenderReq. + */ + const size_t maxSize = (gc->bufSize + sz_xGLXRenderReq) + - sz_xGLXRenderLargeReq; + unsigned vertex_requests; + + + /* Calculate the number of data packets that will be required to send + * the whole command. To do this, the number of verticies that + * will fit in a single buffer must be calculated. + * + * The important value here is elements_per_request. This is the + * number of complete array elements that will fit in a single + * buffer. There may be some wasted space at the end of the buffer, + * but splitting elements across buffer boundries would be painful. + */ + + elements_per_request[0] = maxSize / single_vertex_size; + + vertex_requests = (count + elements_per_request[0] - 1) + / elements_per_request[0]; + + *total_requests = vertex_requests + 1; + + + __glXFlushRenderBuffer(gc, gc->pc); + + command_size += 4; + + pc = ((GLubyte *) arrays->array_info_cache) - (header_size + 4); + *(uint32_t *) (pc + 0) = command_size; + *(uint32_t *) (pc + 4) = X_GLrop_DrawArrays; + *(uint32_t *) (pc + 8) = count; + *(uint32_t *) (pc + 12) = arrays->enabled_client_array_count; + *(uint32_t *) (pc + 16) = mode; + + __glXSendLargeChunk(gc, 1, *total_requests, pc, + header_size + 4 + arrays->array_info_cache_size); + + pc = gc->pc; + } + else { + if ((gc->pc + command_size) >= gc->bufEnd) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } + + pc = gc->pc; + *(uint16_t *) (pc + 0) = command_size; + *(uint16_t *) (pc + 2) = X_GLrop_DrawArrays; + *(uint32_t *) (pc + 4) = count; + *(uint32_t *) (pc + 8) = arrays->enabled_client_array_count; + *(uint32_t *) (pc + 12) = mode; + + pc += header_size; + + (void) memcpy(pc, arrays->array_info_cache, + arrays->array_info_cache_size); + pc += arrays->array_info_cache_size; + + *elements_per_request = count; + *total_requests = 0; + } + + + return pc; +} + + +/** + */ +void +emit_DrawArrays_old(GLenum mode, GLint first, GLsizei count) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + GLubyte *pc; + size_t elements_per_request; + unsigned total_requests = 0; + unsigned i; + size_t total_sent = 0; + + + pc = emit_DrawArrays_header_old(gc, arrays, &elements_per_request, + &total_requests, mode, count); + + + /* Write the arrays. + */ + + if (total_requests == 0) { + assert(elements_per_request >= count); + + for (i = 0; i < count; i++) { + pc = emit_element_old(pc, arrays, i + first); + } + + assert(pc <= gc->bufEnd); + + gc->pc = pc; + if (gc->pc > gc->limit) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } + } + else { + unsigned req; + + + for (req = 2; req <= total_requests; req++) { + if (count < elements_per_request) { + elements_per_request = count; + } + + pc = gc->pc; + for (i = 0; i < elements_per_request; i++) { + pc = emit_element_old(pc, arrays, i + first); + } + + first += elements_per_request; + + total_sent += (size_t) (pc - gc->pc); + __glXSendLargeChunk(gc, req, total_requests, gc->pc, pc - gc->pc); + + count -= elements_per_request; + } + } +} + + +void +emit_DrawElements_none(GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + static const uint16_t begin_cmd[2] = { 8, X_GLrop_Begin }; + static const uint16_t end_cmd[2] = { 4, X_GLrop_End }; + + GLubyte *pc; + size_t single_vertex_size; + unsigned i; + + + single_vertex_size = calculate_single_vertex_size_none(arrays); + + + if ((gc->pc + single_vertex_size) >= gc->bufEnd) { + gc->pc = __glXFlushRenderBuffer(gc, gc->pc); + } + + pc = gc->pc; + + (void) memcpy(pc, begin_cmd, 4); + *(int *) (pc + 4) = mode; + + pc += 8; + + for (i = 0; i < count; i++) { + unsigned index = 0; + + if ((pc + single_vertex_size) >= gc->bufEnd) { + pc = __glXFlushRenderBuffer(gc, pc); + } + + switch (type) { + case GL_UNSIGNED_INT: + index = (unsigned) (((GLuint *) indices)[i]); + break; + case GL_UNSIGNED_SHORT: + index = (unsigned) (((GLushort *) indices)[i]); + break; + case GL_UNSIGNED_BYTE: + index = (unsigned) (((GLubyte *) indices)[i]); + break; + } + pc = emit_element_none(pc, arrays, index); + } + + if ((pc + 4) >= gc->bufEnd) { + pc = __glXFlushRenderBuffer(gc, pc); + } + + (void) memcpy(pc, end_cmd, 4); + pc += 4; + + gc->pc = pc; + if (gc->pc > gc->limit) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } +} + + +/** + */ +void +emit_DrawElements_old(GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + GLubyte *pc; + size_t elements_per_request; + unsigned total_requests = 0; + unsigned i; + unsigned req; + unsigned req_element = 0; + + + pc = emit_DrawArrays_header_old(gc, arrays, &elements_per_request, + &total_requests, mode, count); + + + /* Write the arrays. + */ + + req = 2; + while (count > 0) { + if (count < elements_per_request) { + elements_per_request = count; + } + + switch (type) { + case GL_UNSIGNED_INT:{ + const GLuint *ui_ptr = (const GLuint *) indices + req_element; + + for (i = 0; i < elements_per_request; i++) { + const GLint index = (GLint) * (ui_ptr++); + pc = emit_element_old(pc, arrays, index); + } + break; + } + case GL_UNSIGNED_SHORT:{ + const GLushort *us_ptr = (const GLushort *) indices + req_element; + + for (i = 0; i < elements_per_request; i++) { + const GLint index = (GLint) * (us_ptr++); + pc = emit_element_old(pc, arrays, index); + } + break; + } + case GL_UNSIGNED_BYTE:{ + const GLubyte *ub_ptr = (const GLubyte *) indices + req_element; + + for (i = 0; i < elements_per_request; i++) { + const GLint index = (GLint) * (ub_ptr++); + pc = emit_element_old(pc, arrays, index); + } + break; + } + } + + if (total_requests != 0) { + __glXSendLargeChunk(gc, req, total_requests, gc->pc, pc - gc->pc); + pc = gc->pc; + req++; + } + + count -= elements_per_request; + req_element += elements_per_request; + } + + + assert((total_requests == 0) || ((req - 1) == total_requests)); + + if (total_requests == 0) { + assert(pc <= gc->bufEnd); + + gc->pc = pc; + if (gc->pc > gc->limit) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } + } +} + + +/** + * Validate that the \c mode parameter to \c glDrawArrays, et. al. is valid. + * If it is not valid, then an error code is set in the GLX context. + * + * \returns + * \c GL_TRUE if the argument is valid, \c GL_FALSE if is not. + */ +static GLboolean +validate_mode(__GLXcontext * gc, GLenum mode) +{ + switch (mode) { + case GL_POINTS: + case GL_LINE_STRIP: + case GL_LINE_LOOP: + case GL_LINES: + case GL_TRIANGLE_STRIP: + case GL_TRIANGLE_FAN: + case GL_TRIANGLES: + case GL_QUAD_STRIP: + case GL_QUADS: + case GL_POLYGON: + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return GL_FALSE; + } + + return GL_TRUE; +} + + +/** + * Validate that the \c count parameter to \c glDrawArrays, et. al. is valid. + * A value less than zero is invalid and will result in \c GL_INVALID_VALUE + * being set. A value of zero will not result in an error being set, but + * will result in \c GL_FALSE being returned. + * + * \returns + * \c GL_TRUE if the argument is valid, \c GL_FALSE if it is not. + */ +static GLboolean +validate_count(__GLXcontext * gc, GLsizei count) +{ + if (count < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + } + + return (count > 0); +} + + +/** + * Validate that the \c type parameter to \c glDrawElements, et. al. is + * valid. Only \c GL_UNSIGNED_BYTE, \c GL_UNSIGNED_SHORT, and + * \c GL_UNSIGNED_INT are valid. + * + * \returns + * \c GL_TRUE if the argument is valid, \c GL_FALSE if it is not. + */ +static GLboolean +validate_type(__GLXcontext * gc, GLenum type) +{ + switch (type) { + case GL_UNSIGNED_INT: + case GL_UNSIGNED_SHORT: + case GL_UNSIGNED_BYTE: + return GL_TRUE; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return GL_FALSE; + } +} + + +void +__indirect_glDrawArrays(GLenum mode, GLint first, GLsizei count) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + + if (validate_mode(gc, mode) && validate_count(gc, count)) { + if (!arrays->array_info_cache_valid) { + fill_array_info_cache(arrays); + } + + arrays->DrawArrays(mode, first, count); + } +} + + +void +__indirect_glArrayElement(GLint index) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + size_t single_vertex_size; + + + single_vertex_size = calculate_single_vertex_size_none(arrays); + + if ((gc->pc + single_vertex_size) >= gc->bufEnd) { + gc->pc = __glXFlushRenderBuffer(gc, gc->pc); + } + + gc->pc = emit_element_none(gc->pc, arrays, index); + + if (gc->pc > gc->limit) { + (void) __glXFlushRenderBuffer(gc, gc->pc); + } +} + + +void +__indirect_glDrawElements(GLenum mode, GLsizei count, GLenum type, + const GLvoid * indices) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + + if (validate_mode(gc, mode) && validate_count(gc, count) + && validate_type(gc, type)) { + if (!arrays->array_info_cache_valid) { + fill_array_info_cache(arrays); + } + + arrays->DrawElements(mode, count, type, indices); + } +} + + +void +__indirect_glDrawRangeElements(GLenum mode, GLuint start, GLuint end, + GLsizei count, GLenum type, + const GLvoid * indices) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + + + if (validate_mode(gc, mode) && validate_count(gc, count) + && validate_type(gc, type)) { + if (end < start) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + if (!arrays->array_info_cache_valid) { + fill_array_info_cache(arrays); + } + + arrays->DrawElements(mode, count, type, indices); + } +} + + +void +__indirect_glMultiDrawArraysEXT(GLenum mode, GLint * first, GLsizei * count, + GLsizei primcount) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + GLsizei i; + + + if (validate_mode(gc, mode)) { + if (!arrays->array_info_cache_valid) { + fill_array_info_cache(arrays); + } + + for (i = 0; i < primcount; i++) { + if (validate_count(gc, count[i])) { + arrays->DrawArrays(mode, first[i], count[i]); + } + } + } +} + + +void +__indirect_glMultiDrawElementsEXT(GLenum mode, const GLsizei * count, + GLenum type, const GLvoid ** indices, + GLsizei primcount) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + const __GLXattribute *state = + (const __GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + GLsizei i; + + + if (validate_mode(gc, mode) && validate_type(gc, type)) { + if (!arrays->array_info_cache_valid) { + fill_array_info_cache(arrays); + } + + for (i = 0; i < primcount; i++) { + if (validate_count(gc, count[i])) { + arrays->DrawElements(mode, count[i], type, indices[i]); + } + } + } +} + + +#define COMMON_ARRAY_DATA_INIT(a, PTR, TYPE, STRIDE, COUNT, NORMALIZED, HDR_SIZE, OPCODE) \ + do { \ + (a)->data = PTR; \ + (a)->data_type = TYPE; \ + (a)->user_stride = STRIDE; \ + (a)->count = COUNT; \ + (a)->normalized = NORMALIZED; \ + \ + (a)->element_size = __glXTypeSize( TYPE ) * COUNT; \ + (a)->true_stride = (STRIDE == 0) \ + ? (a)->element_size : STRIDE; \ + \ + (a)->header_size = HDR_SIZE; \ + ((uint16_t *) (a)->header)[0] = __GLX_PAD((a)->header_size + (a)->element_size); \ + ((uint16_t *) (a)->header)[1] = OPCODE; \ + } while(0) + + +void +__indirect_glVertexPointer(GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + static const uint16_t short_ops[5] = { + 0, 0, X_GLrop_Vertex2sv, X_GLrop_Vertex3sv, X_GLrop_Vertex4sv + }; + static const uint16_t int_ops[5] = { + 0, 0, X_GLrop_Vertex2iv, X_GLrop_Vertex3iv, X_GLrop_Vertex4iv + }; + static const uint16_t float_ops[5] = { + 0, 0, X_GLrop_Vertex2fv, X_GLrop_Vertex3fv, X_GLrop_Vertex4fv + }; + static const uint16_t double_ops[5] = { + 0, 0, X_GLrop_Vertex2dv, X_GLrop_Vertex3dv, X_GLrop_Vertex4dv + }; + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (size < 2 || size > 4 || stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_SHORT: + opcode = short_ops[size]; + break; + case GL_INT: + opcode = int_ops[size]; + break; + case GL_FLOAT: + opcode = float_ops[size]; + break; + case GL_DOUBLE: + opcode = double_ops[size]; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_VERTEX_ARRAY, 0); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, size, GL_FALSE, 4, + opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glNormalPointer(GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_BYTE: + opcode = X_GLrop_Normal3bv; + break; + case GL_SHORT: + opcode = X_GLrop_Normal3sv; + break; + case GL_INT: + opcode = X_GLrop_Normal3iv; + break; + case GL_FLOAT: + opcode = X_GLrop_Normal3fv; + break; + case GL_DOUBLE: + opcode = X_GLrop_Normal3dv; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_NORMAL_ARRAY, 0); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, 3, GL_TRUE, 4, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glColorPointer(GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + static const uint16_t byte_ops[5] = { + 0, 0, 0, X_GLrop_Color3bv, X_GLrop_Color4bv + }; + static const uint16_t ubyte_ops[5] = { + 0, 0, 0, X_GLrop_Color3ubv, X_GLrop_Color4ubv + }; + static const uint16_t short_ops[5] = { + 0, 0, 0, X_GLrop_Color3sv, X_GLrop_Color4sv + }; + static const uint16_t ushort_ops[5] = { + 0, 0, 0, X_GLrop_Color3usv, X_GLrop_Color4usv + }; + static const uint16_t int_ops[5] = { + 0, 0, 0, X_GLrop_Color3iv, X_GLrop_Color4iv + }; + static const uint16_t uint_ops[5] = { + 0, 0, 0, X_GLrop_Color3uiv, X_GLrop_Color4uiv + }; + static const uint16_t float_ops[5] = { + 0, 0, 0, X_GLrop_Color3fv, X_GLrop_Color4fv + }; + static const uint16_t double_ops[5] = { + 0, 0, 0, X_GLrop_Color3dv, X_GLrop_Color4dv + }; + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (size < 3 || size > 4 || stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_BYTE: + opcode = byte_ops[size]; + break; + case GL_UNSIGNED_BYTE: + opcode = ubyte_ops[size]; + break; + case GL_SHORT: + opcode = short_ops[size]; + break; + case GL_UNSIGNED_SHORT: + opcode = ushort_ops[size]; + break; + case GL_INT: + opcode = int_ops[size]; + break; + case GL_UNSIGNED_INT: + opcode = uint_ops[size]; + break; + case GL_FLOAT: + opcode = float_ops[size]; + break; + case GL_DOUBLE: + opcode = double_ops[size]; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_COLOR_ARRAY, 0); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, size, GL_TRUE, 4, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glIndexPointer(GLenum type, GLsizei stride, const GLvoid * pointer) +{ + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_UNSIGNED_BYTE: + opcode = X_GLrop_Indexubv; + break; + case GL_SHORT: + opcode = X_GLrop_Indexsv; + break; + case GL_INT: + opcode = X_GLrop_Indexiv; + break; + case GL_FLOAT: + opcode = X_GLrop_Indexfv; + break; + case GL_DOUBLE: + opcode = X_GLrop_Indexdv; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_INDEX_ARRAY, 0); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, 1, GL_FALSE, 4, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glEdgeFlagPointer(GLsizei stride, const GLvoid * pointer) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + + a = get_array_entry(arrays, GL_EDGE_FLAG_ARRAY, 0); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, GL_UNSIGNED_BYTE, stride, 1, GL_FALSE, + 4, X_GLrop_EdgeFlagv); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glTexCoordPointer(GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + static const uint16_t short_ops[5] = { + 0, X_GLrop_TexCoord1sv, X_GLrop_TexCoord2sv, X_GLrop_TexCoord3sv, + X_GLrop_TexCoord4sv + }; + static const uint16_t int_ops[5] = { + 0, X_GLrop_TexCoord1iv, X_GLrop_TexCoord2iv, X_GLrop_TexCoord3iv, + X_GLrop_TexCoord4iv + }; + static const uint16_t float_ops[5] = { + 0, X_GLrop_TexCoord1dv, X_GLrop_TexCoord2fv, X_GLrop_TexCoord3fv, + X_GLrop_TexCoord4fv + }; + static const uint16_t double_ops[5] = { + 0, X_GLrop_TexCoord1dv, X_GLrop_TexCoord2dv, X_GLrop_TexCoord3dv, + X_GLrop_TexCoord4dv + }; + + static const uint16_t mshort_ops[5] = { + 0, X_GLrop_MultiTexCoord1svARB, X_GLrop_MultiTexCoord2svARB, + X_GLrop_MultiTexCoord3svARB, X_GLrop_MultiTexCoord4svARB + }; + static const uint16_t mint_ops[5] = { + 0, X_GLrop_MultiTexCoord1ivARB, X_GLrop_MultiTexCoord2ivARB, + X_GLrop_MultiTexCoord3ivARB, X_GLrop_MultiTexCoord4ivARB + }; + static const uint16_t mfloat_ops[5] = { + 0, X_GLrop_MultiTexCoord1dvARB, X_GLrop_MultiTexCoord2fvARB, + X_GLrop_MultiTexCoord3fvARB, X_GLrop_MultiTexCoord4fvARB + }; + static const uint16_t mdouble_ops[5] = { + 0, X_GLrop_MultiTexCoord1dvARB, X_GLrop_MultiTexCoord2dvARB, + X_GLrop_MultiTexCoord3dvARB, X_GLrop_MultiTexCoord4dvARB + }; + + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + unsigned header_size; + unsigned index; + + + if (size < 1 || size > 4 || stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + index = arrays->active_texture_unit; + if (index == 0) { + switch (type) { + case GL_SHORT: + opcode = short_ops[size]; + break; + case GL_INT: + opcode = int_ops[size]; + break; + case GL_FLOAT: + opcode = float_ops[size]; + break; + case GL_DOUBLE: + opcode = double_ops[size]; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + header_size = 4; + } + else { + switch (type) { + case GL_SHORT: + opcode = mshort_ops[size]; + break; + case GL_INT: + opcode = mint_ops[size]; + break; + case GL_FLOAT: + opcode = mfloat_ops[size]; + break; + case GL_DOUBLE: + opcode = mdouble_ops[size]; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + header_size = 8; + } + + a = get_array_entry(arrays, GL_TEXTURE_COORD_ARRAY, index); + assert(a != NULL); + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, size, GL_FALSE, + header_size, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glSecondaryColorPointerEXT(GLint size, GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (size != 3 || stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_BYTE: + opcode = 4126; + break; + case GL_UNSIGNED_BYTE: + opcode = 4131; + break; + case GL_SHORT: + opcode = 4127; + break; + case GL_UNSIGNED_SHORT: + opcode = 4132; + break; + case GL_INT: + opcode = 4128; + break; + case GL_UNSIGNED_INT: + opcode = 4133; + break; + case GL_FLOAT: + opcode = 4129; + break; + case GL_DOUBLE: + opcode = 4130; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_SECONDARY_COLOR_ARRAY, 0); + if (a == NULL) { + __glXSetError(gc, GL_INVALID_OPERATION); + return; + } + + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, size, GL_TRUE, 4, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glFogCoordPointerEXT(GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + if (stride < 0) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + switch (type) { + case GL_FLOAT: + opcode = 4124; + break; + case GL_DOUBLE: + opcode = 4125; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + a = get_array_entry(arrays, GL_FOG_COORD_ARRAY, 0); + if (a == NULL) { + __glXSetError(gc, GL_INVALID_OPERATION); + return; + } + + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, 1, GL_FALSE, 4, opcode); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +void +__indirect_glVertexAttribPointerARB(GLuint index, GLint size, + GLenum type, GLboolean normalized, + GLsizei stride, const GLvoid * pointer) +{ + static const uint16_t short_ops[5] = { 0, 4189, 4190, 4191, 4192 }; + static const uint16_t float_ops[5] = { 0, 4193, 4194, 4195, 4196 }; + static const uint16_t double_ops[5] = { 0, 4197, 4198, 4199, 4200 }; + + uint16_t opcode; + __GLXcontext *gc = __glXGetCurrentContext(); + __GLXattribute *state = (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + unsigned true_immediate_count; + unsigned true_immediate_size; + + + if ((size < 1) || (size > 4) || (stride < 0) + || (index > arrays->num_vertex_program_attribs)) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + + if (normalized && (type != GL_FLOAT) && (type != GL_DOUBLE)) { + switch (type) { + case GL_BYTE: + opcode = X_GLrop_VertexAttrib4NbvARB; + break; + case GL_UNSIGNED_BYTE: + opcode = X_GLrop_VertexAttrib4NubvARB; + break; + case GL_SHORT: + opcode = X_GLrop_VertexAttrib4NsvARB; + break; + case GL_UNSIGNED_SHORT: + opcode = X_GLrop_VertexAttrib4NusvARB; + break; + case GL_INT: + opcode = X_GLrop_VertexAttrib4NivARB; + break; + case GL_UNSIGNED_INT: + opcode = X_GLrop_VertexAttrib4NuivARB; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + true_immediate_count = 4; + } + else { + true_immediate_count = size; + + switch (type) { + case GL_BYTE: + opcode = X_GLrop_VertexAttrib4bvARB; + true_immediate_count = 4; + break; + case GL_UNSIGNED_BYTE: + opcode = X_GLrop_VertexAttrib4ubvARB; + true_immediate_count = 4; + break; + case GL_SHORT: + opcode = short_ops[size]; + break; + case GL_UNSIGNED_SHORT: + opcode = X_GLrop_VertexAttrib4usvARB; + true_immediate_count = 4; + break; + case GL_INT: + opcode = X_GLrop_VertexAttrib4ivARB; + true_immediate_count = 4; + break; + case GL_UNSIGNED_INT: + opcode = X_GLrop_VertexAttrib4uivARB; + true_immediate_count = 4; + break; + case GL_FLOAT: + opcode = float_ops[size]; + break; + case GL_DOUBLE: + opcode = double_ops[size]; + break; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + } + + a = get_array_entry(arrays, GL_VERTEX_ATTRIB_ARRAY_POINTER, index); + if (a == NULL) { + __glXSetError(gc, GL_INVALID_OPERATION); + return; + } + + COMMON_ARRAY_DATA_INIT(a, pointer, type, stride, size, normalized, 8, + opcode); + + true_immediate_size = __glXTypeSize(type) * true_immediate_count; + ((uint16_t *) (a)->header)[0] = __GLX_PAD(a->header_size + + true_immediate_size); + + if (a->enabled) { + arrays->array_info_cache_valid = GL_FALSE; + } +} + + +/** + * I don't have 100% confidence that this is correct. The different rules + * about whether or not generic vertex attributes alias "classic" vertex + * attributes (i.e., attrib1 ?= primary color) between ARB_vertex_program, + * ARB_vertex_shader, and NV_vertex_program are a bit confusing. My + * feeling is that the client-side doesn't have to worry about it. The + * client just sends all the data to the server and lets the server deal + * with it. + */ +void +__indirect_glVertexAttribPointerNV(GLuint index, GLint size, + GLenum type, GLsizei stride, + const GLvoid * pointer) +{ + __GLXcontext *gc = __glXGetCurrentContext(); + GLboolean normalized = GL_FALSE; + + + switch (type) { + case GL_UNSIGNED_BYTE: + if (size != 4) { + __glXSetError(gc, GL_INVALID_VALUE); + return; + } + normalized = GL_TRUE; + + case GL_SHORT: + case GL_FLOAT: + case GL_DOUBLE: + __indirect_glVertexAttribPointerARB(index, size, type, + normalized, stride, pointer); + return; + default: + __glXSetError(gc, GL_INVALID_ENUM); + return; + } +} + + +void +__indirect_glClientActiveTextureARB(GLenum texture) +{ + __GLXcontext *const gc = __glXGetCurrentContext(); + __GLXattribute *const state = + (__GLXattribute *) (gc->client_state_private); + struct array_state_vector *const arrays = state->array_state; + const GLint unit = (GLint) texture - GL_TEXTURE0; + + + if ((unit < 0) || (unit >= arrays->num_texture_units)) { + __glXSetError(gc, GL_INVALID_ENUM); + return; + } + + arrays->active_texture_unit = unit; +} + + +/** + * Modify the enable state for the selected array + */ +GLboolean +__glXSetArrayEnable(__GLXattribute * state, GLenum key, unsigned index, + GLboolean enable) +{ + struct array_state_vector *arrays = state->array_state; + struct array_state *a; + + + /* Texture coordinate arrays have an implict index set when the + * application calls glClientActiveTexture. + */ + if (key == GL_TEXTURE_COORD_ARRAY) { + index = arrays->active_texture_unit; + } + + a = get_array_entry(arrays, key, index); + + if ((a != NULL) && (a->enabled != enable)) { + a->enabled = enable; + arrays->array_info_cache_valid = GL_FALSE; + } + + return (a != NULL); +} + + +void +__glXArrayDisableAll(__GLXattribute * state) +{ + struct array_state_vector *arrays = state->array_state; + unsigned i; + + + for (i = 0; i < arrays->num_arrays; i++) { + arrays->arrays[i].enabled = GL_FALSE; + } + + arrays->array_info_cache_valid = GL_FALSE; +} + + +/** + */ +GLboolean +__glXGetArrayEnable(const __GLXattribute * const state, + GLenum key, unsigned index, GLintptr * dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + if (a != NULL) { + *dest = (GLintptr) a->enabled; + } + + return (a != NULL); +} + + +/** + */ +GLboolean +__glXGetArrayType(const __GLXattribute * const state, + GLenum key, unsigned index, GLintptr * dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + if (a != NULL) { + *dest = (GLintptr) a->data_type; + } + + return (a != NULL); +} + + +/** + */ +GLboolean +__glXGetArraySize(const __GLXattribute * const state, + GLenum key, unsigned index, GLintptr * dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + if (a != NULL) { + *dest = (GLintptr) a->count; + } + + return (a != NULL); +} + + +/** + */ +GLboolean +__glXGetArrayStride(const __GLXattribute * const state, + GLenum key, unsigned index, GLintptr * dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + if (a != NULL) { + *dest = (GLintptr) a->user_stride; + } + + return (a != NULL); +} + + +/** + */ +GLboolean +__glXGetArrayPointer(const __GLXattribute * const state, + GLenum key, unsigned index, void **dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + + if (a != NULL) { + *dest = (void *) (a->data); + } + + return (a != NULL); +} + + +/** + */ +GLboolean +__glXGetArrayNormalized(const __GLXattribute * const state, + GLenum key, unsigned index, GLintptr * dest) +{ + const struct array_state_vector *arrays = state->array_state; + const struct array_state *a = + get_array_entry((struct array_state_vector *) arrays, + key, index); + + + if (a != NULL) { + *dest = (GLintptr) a->normalized; + } + + return (a != NULL); +} + + +/** + */ +GLuint +__glXGetActiveTextureUnit(const __GLXattribute * const state) +{ + return state->array_state->active_texture_unit; +} + + +void +__glXPushArrayState(__GLXattribute * state) +{ + struct array_state_vector *arrays = state->array_state; + struct array_stack_state *stack = + &arrays->stack[(arrays->stack_index * arrays->num_arrays)]; + unsigned i; + + /* XXX are we pushing _all_ the necessary fields? */ + for (i = 0; i < arrays->num_arrays; i++) { + stack[i].data = arrays->arrays[i].data; + stack[i].data_type = arrays->arrays[i].data_type; + stack[i].user_stride = arrays->arrays[i].user_stride; + stack[i].count = arrays->arrays[i].count; + stack[i].key = arrays->arrays[i].key; + stack[i].index = arrays->arrays[i].index; + stack[i].enabled = arrays->arrays[i].enabled; + } + + arrays->active_texture_unit_stack[arrays->stack_index] = + arrays->active_texture_unit; + + arrays->stack_index++; +} + + +void +__glXPopArrayState(__GLXattribute * state) +{ + struct array_state_vector *arrays = state->array_state; + struct array_stack_state *stack; + unsigned i; + + + arrays->stack_index--; + stack = &arrays->stack[(arrays->stack_index * arrays->num_arrays)]; + + for (i = 0; i < arrays->num_arrays; i++) { + switch (stack[i].key) { + case GL_NORMAL_ARRAY: + __indirect_glNormalPointer(stack[i].data_type, + stack[i].user_stride, stack[i].data); + break; + case GL_COLOR_ARRAY: + __indirect_glColorPointer(stack[i].count, + stack[i].data_type, + stack[i].user_stride, stack[i].data); + break; + case GL_INDEX_ARRAY: + __indirect_glIndexPointer(stack[i].data_type, + stack[i].user_stride, stack[i].data); + break; + case GL_EDGE_FLAG_ARRAY: + __indirect_glEdgeFlagPointer(stack[i].user_stride, stack[i].data); + break; + case GL_TEXTURE_COORD_ARRAY: + arrays->active_texture_unit = stack[i].index; + __indirect_glTexCoordPointer(stack[i].count, + stack[i].data_type, + stack[i].user_stride, stack[i].data); + break; + case GL_SECONDARY_COLOR_ARRAY: + __indirect_glSecondaryColorPointerEXT(stack[i].count, + stack[i].data_type, + stack[i].user_stride, + stack[i].data); + break; + case GL_FOG_COORDINATE_ARRAY: + __indirect_glFogCoordPointerEXT(stack[i].data_type, + stack[i].user_stride, stack[i].data); + break; + + } + + __glXSetArrayEnable(state, stack[i].key, stack[i].index, + stack[i].enabled); + } + + arrays->active_texture_unit = + arrays->active_texture_unit_stack[arrays->stack_index]; +} |